9th Eastern European Young Water Professionals Conference

The 9th Eastern European Young Water Professionals Conference is an annual conference organised by the International Water Association (IWA), specifically aimed at people under 35 who work in this area. This year, the conference will take place on 24-27th May 2017  in Budapest, Hungary with a theme of “Cross-Border Cooperation of Old, New and Candidate Countries of EU, for identifying problems, finding causes and solutions”. The conference include poster and oral presentations, as well as workshops a technical tour, and cultural excursions. Visit their website for more details!

Key Date:

Registration Deadline – 1st April

Can’t make the conference, but would like to be engaged with young water professionals? Why not read our Emerging Investigators series in Environmental Science: Water Research & Technology – http://rsc.li/emerging-series

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Membrane Technology Conference and Exposition

The Membrane Technology Conference and Exposition is the annual conference organised jointly by the American Water Works Association (AWWA) and American Membrane Technology Association (AMTA). This year the conference is being held on 13-17th February in Long Beach, California. They aim to explore “the development and implementation of membrane technologies in water, wastewater, reuse, and industrial membrane systems as well as operation and maintenance of membrane equipment and facilities”. As well as technical sessions, the event also offers workshops, networking events and facility tours.

Register now to book your place!

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What are your colleagues reading in Environmental Science: Water Research & Technology?

The articles below are some of the most read Environmental Science: Water Research & Technology articles in 2016. You can view the full collection of our top 10 downloaded articles here.

 

Membrane materials for water purification: design, development, and application
Anna Lee, Jeffrey W. Elam and Seth B. Darling

 

Inorganic engineered nanoparticles in drinking water treatment: a critical review
Konstantinos Simeonidis, Stefanos Mourdikoudis, Efthimia Kaprara, Manassis Mitrakas and Lakshminarayana Polavarapu

 

Survey of green building water systems reveals elevated water age and water quality concerns
William J. Rhoads, Amy Pruden and Marc A. Edwards

 

Characterising and understanding the impact of microbial biofilms and the extracellular polymeric substance (EPS) matrix in drinking water distribution systems
Katherine E. Fish, A. Mark Osborn and Joby Boxall

 

Inactivation of bacteria from contaminated streams in Limpopo, South Africa by silver- or copper-nanoparticle paper filters
Theresa A. Dankovich, Jonathan S. Levine, Natasha Potgieter, Rebecca Dillingham and James A. Smith

 

Keep up-to-date with the latest issues of Environmental Science: Water Research & Technology by joining our e-alerts.

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Emerging Investigator Series: John-David Rocha and Reginald Rogers

John-David R. Rocha is an Assistant Professor in the School of Chemistry and Materials Science at the Rochester Institute of Technology. His research focus is in the area of nanotechnology as a physical / analytical / materials chemist, more specifically, in the use of nanomaterials in energy, electronics, and environmental science. He utilizes his expertise in the areas of carbon nanomaterials characterization to expand areas of fundamental understanding in carbon nanotubes and graphenes, keenly working to tie the acquired knowledge to the application needs of the chemical and engineering industries. He received his BS and MS degrees in Chemistry from the University of North Texas in 1995 and 2002, respectively. Following his PhD in 2008 from Rice University, he was a Postdoctoral Researcher at the National Renewable Energy Laboratory. Prior to arriving at RIT, Dr. Rocha was a Research Scientist at SouthWest NanoTechnologies Inc. where, among other responsibilities, he led a $1.1M joint collaboration between SWeNT and a major electronics corporation to develop semiconducting SWCNT inks for thin film transistor applications. His doctoral and postdoctoral research focused on optical spectroscopic characterization of carbon-based nanomaterials including carbon nanotubes and metal organic frameworks. Rocha’s chemical research experience also includes work in gas-phase chemical kinetics of atmospheric and combustion chemistry and computational chemistry studies of organometallics. He is a member of the American Chemical Society and also participates regularly in activities with the MRS, AAAS, and the Society for the Advancement of Chicano and Native Americans in Science (SACNAS). Prior to returning to full-time chemical research in 2003, Rocha taught secondary Mathematics and Chemistry in the large urban school district of Dallas, TX, his hometown.

Reginald Rogers is an Assistant Professor in Chemical Engineering at the Rochester Institute of Technology.  He is head of the Nanoscale Energy and Separation Materials Laboratory (NESML).  Dr. Rogers and his group have been involved in a variety of projects investigating the separation of organic and inorganic compounds from aqueous environments using carbon-based nanomaterials.  Dr. Rogers also has projects focused on the development of cathode materials for sodium ion batteries.  He has served as a co-author on over 20 research papers and has presented at many national conferences.  Dr. Rogers recently received several awards, including the 2015 Joseph N. Cannon Award in Chemical Engineering from the National Organization for the Professional Advancement of Black Chemists and Chemical Engineers, and the 2016 Richard and Virginia Eisenhart Provost’s Award for Excellence in Teaching from RIT.

Read their Emerging Investigators article Highly Effective Adsorption of Organic Aromatic Molecules from Aqueous Environments by Electronically Sorted SingleWalled Carbon Nanotubes and find out more about their work in the interview below:

Your recent Emerging Investigator Series paper in Environmental Science: Water Research & Technology focuses on single-walled carbon nanotubes, and the influence of chirality on their performance for water remediation applications. How has your research evolved from your first article to this most recent article?

Reginald: In 2011, we had a premise that carbon nanotubes could be used in water treatment applications, but never had a complete picture on their promise.  The initial results, published in Chemical Engineering Journal, laid the foundation for further expansion on the subject.  In 2013, we reported on a novel technique for using hybrid structures, which significantly improved the adsorption uptake capacity.  With this knowledge, my group published 5 other publications to further develop and clarify the adsorption behavior in batch and fixed bed systems.  This new paper on using sorted carbon nanotubes by chirality provides another stepping stone towards the development of 3-D adsorption architectures for filtration systems.  The hope is to take this knowledge and continue the growth of this fairly new adsorbent in water treatment applications. 

John-David: My work with single-walled carbon nanotubes began back in 2003 with my primary expertise developed in the use of novel optical spectroscopic techniques for characterization. Following the establishment of new spectrofluorimetric analytical methods, I demonstrated the application of the techniques to study chirality specific reactivities to solve important early questions of single-walled carbon nanotube chemistry. Interestingly, these studies illustrated how early cursory studies of carbon nanotubes can be impacted by material variability and control of experimental conditions. It was with these studies between 2003 to 2008, followed by my growth of research experience in SWCNT separations work, that I developed the knowledge to partner with Dr. Rogers in broadening his exciting research in applying carbon nanotubes to water treatment applications.

What aspect of your work are you most excited about at the moment?

Reginald: I am most excited about the opportunity for translating our results from the past research efforts into actual systems (e.g. mocked up water filtration system) to see what an end user would see from an engineered product solution standpoint.  This will calibrate us to other focus areas that may be needed to further enhance this particular type of adsorbent.

John-David: The most exciting aspects of my carbon nanomaterials research at the moment are seeing the growth opportunities in novel, unexplored application areas like environmental science and water remediation.

In your opinion, what is the biggest challenge in using nanotubes as an adsorbent in environmental systems?

Reginald: I would say that biggest challenge in using nanotubes as an adsorbent in environmental systems is being able to demonstrate their reusability on the long-range scale.  One of the biggest debates around nanomaterials is their end of life attributes.  It is my belief that we can overcome the fears of increasing toxicity levels from nanomaterials by continually exploring how to recycle these materials for reuse by the end user. 

John-David: This question dovetails into the next, but essentially the biggest challenge is the intrinsic variability of carbon nanotube materials, both single- and multi-walled. These variations arise from the different large-scale production and processing techniques. Ultimately, determining how the variations can affect results in applications like adsorption of environmental pollutants can sometimes be more difficult relative to the potential advantages gained.

What do you find most challenging about your research?

Reginald: The most challenging thing about my research is focusing on how to drive down the costs associated with material development of these carbon nanotube-based adsorbents.  A major hurdle in the rapid expansion of this type of adsorbent is driven by scale-up.  Given the wide variability in carbon nanotube synthesis and purification techniques, it is not as straightforward as one might expect to simply produce bulk quantities of this type of adsorbent with a small degree in variation from one batch to another.  As my group continues to develop these adsorbents, we are constantly looking for ways to minimize variability in synthesis techniques.

John-David: I would strongly concur with Dr. Rogers in his summary of the challenging aspects with respect to carbon nanomaterials research. More broadly, it is extremely difficult to demonstrate the ability to scale bench-top research results to actual real-world application level results. Quite often the disconnect between published results to the production level end-user application goals is too great to overcome. The challenge is to continually find ways to answer the important questions that can help close or reduce these gaps.

In which upcoming conferences or events may our readers meet you?

Reginald: I will be attending the 2017 Gordon Research Conference on Environmental Nanotechnology in Stowe, VT June 18th-23rd.  I will also be at the 2017 American Institute of Chemical Engineers Annual Meeting in Minneapolis, MN October 29th-November 3rd.

John-David: I will be attending the 254th American Chemical Society National Meeting in Washington, DC August 20 – 24 and the ACS Northeast Regional Meeting in October 2017.

How do you spend your spare time?

Reginald: I am typically spending my time traveling to new locations, reading books, or staying in shape at the gym.

John-David: I enjoy spending time with my family, volunteering in the community, participating in church activities, reading books, and exercising.

Which profession would you choose if you were not a scientist?

Reginald: Since I love to travel, I would say I would choose to be travel agent or food connoisseur.

John-David: I was a high school chemistry teacher for a number of years, so it’s hard to speak of a profession that doesn’t fall within the broad context of the STEM fields. Potential non-chemistry related professions might be medical doctor/surgeon or a computer programmer.

Can you share one piece of career-related advice or wisdom with other early career scientists?

Reginald: Find balance in how your handle your workload.  Don’t go overboard with trying to do everything at one time.  Be willing to say “no” when the going gets tough.  This will help you maintain sanity as you navigate all of your responsibilities.

John-David: Find like-minded colleagues to communicate with regarding all aspects of life, not exclusive to, but in particular those areas outside of research and teaching, including family life, recreation, and social areas. Also don’t sacrifice your personal life, particularly family, for your career.

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Emerging Investigator Series: Joseph Kasprzyk

Joseph Kasprzyk, Assistant Professor of Civil and Architectural Engineering.

Joseph Kasprzyk is an assistant professor in the Civil Environmental and Architectural Engineering Department at the University of Colorado Boulder.  His research focuses on advancing multi-objective decision making and model diagnostics for water resources and environmental engineering problems.  Recent research projects in his group include stakeholder engagement for water resources management in the Front Range of Colorado, creating a framework for improved water quality under extreme climate events, and analysing the air quality and public health impacts of unconventional oil and gas development.  He is the recipient of the Universities Council on Water Resources dissertation award and the Early Career Research Excellence award from the International Environmental Modelling and Software Society.  Kasprzyk earned his PhD from the Pennsylvania State University.

Read Joseph’s Emerging Investigators review of Decision support systems for water treatment: making the case for incorporating climate change and climate extremes and find out more about his work in the interview below:

How has your research evolved from your first to your most recent article?

When I started my research career, my research adviser Prof. Pat Reed and I started a productive collaboration with Prof. Greg Characklis at the University of North Carolina.  Greg had some innovative ideas on risk-based decision making for water resources systems, such as using thresholds and probabilistic modelling to inform utilities on how to make their water supply have a higher reliability (i.e. meeting demands and maintaining supply levels).  In my own research I worked on new methods for multi-objective decision making for these systems.  Later, we would also collaborate with researchers at RAND corporation on how to bring robust decision making techniques to bear on these problems, coupling them with multi-objective optimization.

In my more recent papers, we have worked on a diverse set of problems with these techniques including a multi-reservoir water resources system in Texas and groundwater contamination remediation.  I’ve also worked on a set of projects that seeks to continue advancing the methodology of multi-objective optimization, such as exploring the impact of problem formulation on the solutions generated from optimization (e.g., what is the influence of constraints on the solutions from decision support).  Of course, we are quite excited about the work published in Environmental Science: Water Research and Technology, where we have provided a critical review of how some of the water resources research that we have done can inform and advance the study of source water quality and water treatment.

What aspect of your work are you most excited about at the moment?

There are many reasons to be excited when studying environmental engineering and decision making these days!

There is a growing community working on these problems, as evidenced by a new Society for Decision Making Under Deep Uncertainty, as well as a burgeoning community in Water and Society at the American Geophysical Union.  It is exciting to have more people joining the conversation and bringing in new ideas.

The proliferation of scientific tools, programming languages, and technologies is making it easier to share decision support systems with students, analysts, as well as decision makers and stakeholders themselves.  However, this opportunity also means that we need to keep educating people as to how to properly use scientific and engineering techniques to come to the proper conclusion about their systems.  For example, in the past, it might have been possible to only run a small number of computer simulations to understand the performance of a system, but with high performance computing systems as well as cloud services, the possibilities are now being greatly expanded.

I’m excited to continue pursuing work directly with stakeholders and decision makers, which helps us learn how to improve our tools to have greater applicability, as well as disseminate our scientific findings within the community to guide their activities.  My work in this area has been greatly aided by Western Water Assessment at the University of Colorado Boulder and the Water Research Foundation, an organization that has a great relationship with water utilities around the country.

In your opinion, what is the most concerning impact associated with your work?

Our critical review paper suggests that although scientists are gaining a good understanding of how climate change impacts the quantity of water in our supply systems, the relationship between climate change and water quality is more complex and not as well understood.  The complexity of decision support for water treatment, as well as the wide variety of models and techniques used within the field, is exciting, but potentially overwhelming for stakeholders and users in the field.  So we are happy that we were able to share our findings in the journal so that our review can be a resource for researchers to continue their important work in the future.

What do you find most challenging about your research?

The project team on this paper is an interesting mix of hydrologists, environmental chemists, and water resources engineers.  The terminology used within these fields is not always consistent, but what was even more challenging was that the terminology within the research articles that we reviewed was even less consistent.  This is one of the main reasons why one of the recommendations we made is for a standardization of terminology in order to improve communication in this important field.  The lead author of the paper, William Raseman, did a great job in culling all the information and I hope it came through in the final manuscript.

In which upcoming conferences or events may our readers meet you?

My group typically attends the American Geophysical Union fall meeting (in December of every year) and the American Society of Civil Engineers Environmental Water Resources Institute meeting (in May or June every year).  I am also proud to be a member of the Association of Environmental Engineering and Science Professors, and I look forward to their conference in June 2017.

How do you spend your spare time?

Boulder, Colorado is a great place to do outdoor activities, and I enjoy hiking, jogging, and horseback riding.  Music is also an important part of my life, and I enjoy going to concerts as well as playing several instruments such as the guitar and piano.  Ben Livneh, one of my co-authors on this paper, is also an avid guitarist himself, and we have made music together in addition to publishing.

Which profession would you choose if you were not a scientist?

One of my favourite parts about being a professor is in interacting with students, other researchers, and the general public.  So, if I were to choose another profession I would want it to be one that includes a lot of communication and public outreach!

Can you share one piece of career-related advice or wisdom with other early career scientists?

The most rewarding part of my career so far has been in working with smart people with diverse interests, that allow us to expand our approaches into new areas.  For example, I am beginning a new US National Science Foundation-funded project this year that seeks to advance the design of sustainable building materials, in collaboration with Profs. Wil Srubar and Leah Sprain at the University of Colorado Boulder.  So, when starting your career, don’t be afraid to pursue new lines of inquiry and get out of your comfort zone.  In addition to opening up new research opportunities, it might teach you something about your own area at the same time.  Also, make sure that you are enjoying your work and having fun.  Being able to enjoy the research that you are doing comes through in the quality of the finished product.

 

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Emerging Investigator Series: Damian Helbling

Damian Helbling, assistant professor of civil and environmental engineering (CEE).

Damian E. Helbling is an Assistant Professor in the School of Civil and Environmental Engineering at Cornell University. His research focuses on the relationship between human social and technological development and the quality of freshwater resources, with a particular interest in the occurrence and fate of anthropogenic organic chemicals in natural and engineered water systems. He received a B.S. in civil engineering from Penn State University along with M.S. and Ph.D. degrees in civil and environmental engineering from Carnegie Mellon University. He spent five years as a postdoctoral research associate at the Swiss Federal Institute of Aquatic Science and Technology (Eawag) prior to his arrival at Cornell in 2014.

Read Damian’s Emerging Investigators review on the Prioritization of suspect hits in a sensitive suspect screening workflow for comprehensive micropollutant characterization in environmental samples and find out more about his work in the interview below:

How has your research evolved from your first to your most recent article?

The consistent theme throughout my research career has been my interest in water. I was motivated to pursue an academic career by my fascination with water and a desire to gain a deeper understanding of the physical, chemical, and biological processes that drive changes in water quality that may ultimately influence the health of aquatic ecosystems or exposed human populations. My first publications as a graduate student focused on describing new approaches to monitor water quality in drinking water distribution systems in real-time to provide early warning of microbial contamination events. My work has evolved since then to focus more on the occurrence and transformation of anthropogenic organic chemicals throughout the entire urban water cycle.

What aspect of your work are you most excited about at the moment?

I am generally excited about the opportunities I have to contribute to the academic culture at Cornell University as both a teacher and a researcher. With respect to research, I am excited about the progress we have made in developing techniques using high-resolution mass spectrometry to more comprehensively assess chemical occurrence in water samples (i.e. environmental forensics) and to elucidate structures of unknown chemicals resulting from chemical or biological transformations (i.e. environmental metabolomics). We use these techniques to improve our fundamental understanding of chemical fate, but also to inform the development of new treatment technologies that may contribute to the removal of trace organic chemicals from water and wastewater.   

How can the accuracy of characterising the occurrence of micropollutants in environmental samples be improved?

The goal of the research described in our manuscript was to develop a suspect screening method that was as accurate as possible in characterizing the occurrence of micropollutants in environmental samples. We achieved that goal, but by aiming for high accuracy, we sacrificed precision. The vision for suspect screening should be towards the development of methods that maximize both accuracy and precision. Fortunately, there is a growing group of scientists working hard towards developing better tools to manipulate large full-scan mass spectral data acquisitions, to predict retention times and MS2 fragmentation patterns of suspect chemicals, and to collect and store mass spectra of large numbers of chemicals as a resource for the research community. Advances in these areas are expected to improve both the accuracy and precision of data-processing pipelines aimed at characterizing the occurrence of micropollutants in a variety of environmental samples.

What do you find most challenging about your research?

A big challenge is understanding the link between a complex characterization of chemical constituents in a water sample and the concomitant risk of those chemical constituents to aquatic ecosystem or human health. We are developing relationships with aquatic ecologists and environmental toxicologists to help us place the results of our work into a health-based context. It is imperative to link exposure and risk to help inform the conversation on regulatory decision making and future urban water policy.

In which upcoming conferences or events may our readers meet you?

I am fond of the Gordon Research Conference on Environmental Sciences: Water and the Association of Environmental Engineering and Science Professors (AEESP) Research and Education Conference. These conferences are held every other year in alternating summers, so I plan to attend these conferences regularly. I am also an active participant at American Chemical Society (ACS) conferences and try to attend at least one of the national meetings each year. 

 How do you spend your spare time?

I have a lot of hobbies and wish I had more spare time to dedicate to those activities! I enjoy the outdoors and spend a lot of time cycling or hiking in the natural areas around Cornell and the Finger Lakes region of New York State. I am also a bit of an audiophile and have a modest collection of vinyl and digital recordings and a handful of acoustic instruments that have lamentably become somewhat neglected in recent years!

Which profession would you choose if you were not a scientist?

I am passionate about both teaching and research, so I could see myself focusing on a career in education irrespective of my interests in scientific research. If I were to switch gears all together, I can imagine myself as a small-business entrepreneur. I have been known to daydream about concepts for new types of shops or cafes and could see myself enjoying the challenge of building a small-business in an exotic location!

Can you share one piece of career-related advice or wisdom with other early career scientists?

Seize the opportunities that come your way.

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Major society chemistry publishers jointly commit to integration with ORCID

ORCID provides an identifier for individuals to use with their name as they engage in research, scholarship and innovation activities, ensuring authors gain full credit for their work.

Today, we signed their open letter, along with ACS Publications, committing to unambiguous identification of all authors that publish in our journals.

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The Royal Society of Chemistry and the Publications Division of the American Chemical Society (ACS) today each became signatories to the ORCID Open Letter, reasserting the commitment of both organizations to enhancing the scholarly publishing experience for researchers worldwide who are involved in chemistry and allied fields.

The commitment by these two global chemistry publishers to undertake new workflow integration with technology infrastructure provided by ORCID, a not-for-profit organization that provides unique identifiers for researchers and scholars, will enable both societies to provide unambiguous designation of author names within chemistry and across the broader sciences. This partnership with ORCID will resolve ambiguity in researcher identification caused by name changes, cultural differences in name presentation, and the inconsistent use of name abbreviations that is too often a source of confusion for those who must rely on the published scientific record.

By becoming signatories to the ORCID Open Letter, these two major chemical societies are voicing their intent to collect ORCID iDs for all submitting authors through use of the ORCID API, and to display such identifiers in the articles published in their respective society journals. The integration of such activities within the publishers’ workflows means authors will benefit from automated linkages between their ORCID record and unique identifiers embedded within their published research articles, ensuring their contributions are appropriately recognized and credited.

During the publishing process, ACS and the Royal Society of Chemistry will automatically deposit publications to Crossref, which in turn will coordinate with ORCID to link and update the publishing activity populated to authors’ respective ORCID profiles, thus attributing each published work to the correct researcher. Existing holders of an ORCID iD will encounter a one-time prompt to grant permission for the linkage. If authors do not have an ORCID iD, they can easily enroll without navigating away from the publishers’ manuscript submission site. If users wish to revoke integrated ORCID profile access at any time, they can elect to do so through their ACS, Royal Society of Chemistry or ORCID accounts.

Both ACS Publications and the Royal Society of Chemistry understand the importance of attributing accurately the scholarly contributions of research scientists in the context of their other professional activities. “ACS has supported ORCID since the outset of the initiative,” says Sarah Tegen, Ph.D., Vice President of Global Editorial & Author Services at ACS Publications. “We are pleased now to align with the Royal Society of Chemistry in this endeavor, as both societies underscore our willingness not only to encourage and assist our respective authors in establishing their unique ORCID profiles, but also to help tackle the broader challenge of researcher name disambiguation in the scholarly literature. With the integration of author ORCID iDs in our publishing workflows, we will ensure that researchers receive proper credit for their accomplishments.”

Emma Wilson, Ph.D., Director of Publishing at the Royal Society of Chemistry adds, “We have been a supporter of ORCID since 2013, recognizing the benefits it brings to researchers; ORCID can and will make a huge difference to our authors’ ability to gain full credit for their work. ORCID will also help researchers meet the requirements of their research funders — for example, a number of funders have already announced that all grant applicants must now include a researcher’s ORCID iD. A unified system that integrates and links research-related information with accurate and timely linkage to the publishing output of authors has the potential to simplify and speed up their grant applications — something we know is important to researchers.”

“The ACS and the Royal Society of Chemistry have been long-standing supporters of ORCID,” says Laurel Haak, Ph.D., Executive Director, ORCID. “We are pleased to see ORCID integration into ACS and Royal Society of Chemistry Publications systems. This will be a substantial benefit to researchers in the chemistry community, both in improving search and discovery of research articles, and for attribution and recognition of researchers’ contributions to the discipline.”

About the American Chemical Society and ACS Publications

The American Chemical Society is a nonprofit organization chartered by the U.S. Congress. With nearly 157,000 members, ACS is the world’s largest scientific society and a global leader in providing access to chemistry-related research through its multiple databases, peer-reviewed journals and scientific conferences. Its main offices are in Washington, D.C., and Columbus, Ohio.

ACS Publications, a division of the American Chemical Society, is a nonprofit scholarly publisher of 50 peer-reviewed journals and a range of eBooks at the interface of chemistry and allied sciences, including physics and biology. ACS Publications journals are among the most-cited, most-trusted and most-read within the scientific literature. Respected for their editorial rigor, ACS journals offer high-quality service to authors and readers, including rapid time to publication, a range of channels for researchers to access ACS Publications’ award-winning web and mobile delivery platforms, and a comprehensive program of open access publishing options for authors and their funders. ACS Publications also publishes Chemical & Engineering News — the Society’s newsmagazine covering science and technology, business and industry, government and policy, education and employment aspects of the chemistry field.

About the Royal Society of Chemistry

The Royal Society of Chemistry is the world’s leading chemistry community, advancing excellence in the chemical sciences. With over 50,000 members and a knowledge business that spans the globe, we are the U.K.’s professional body for chemical scientists; a not-for-profit organisation with 175 years of history and an international vision for the future. We promote, support and celebrate chemistry. We work to shape the future of the chemical sciences — for the benefit of science and humanity.

About ORCID

ORCID’s vision is a world where all who participate in research, scholarship and innovation are uniquely identified and connected to their contributions across disciplines, borders and time. ORCID provides an identifier for individuals to use with their name as they engage in research, scholarship and innovation activities. It provides open tools that enable transparent and trustworthy connections between researchers, their contributions and affiliations. The organization provides this service to help people find information and to simplify reporting and analysis. ORCID is a not-for-profit organization, sustained by fees from member organizations. Its work is open, transparent and non-proprietary. The organization strives to be a trusted component of research infrastructure with the goal of providing clarity in the breadth of research contributions and the people who make them.

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Ozone filling a hole in water disinfection

Written for Chemistry World by Osman Mohamed

Ozone generator proves to be healthier alternative to established chlorination technology for small-scale wastewater treatment

Irrigation system

Every day, 34 billion litres of fresh water are used for landscape irrigation in the US. Source: © iStock

Scientists in the US have proven that wastewater disinfection by ozonation can reduce impacts on human health compared with chlorination, today’s most commonly used method.

34 billion litres of fresh water are used in the US every day for landscape irrigation. Small-scale disinfectant systems could curb this enormous need by allowing households and businesses to recycle their own wastewater.

Currently, wastewater disinfection is mainly carried out using chlorination, where chlorine or hypochlorite is added to the water to kill pathogens, but now microplasma ozonation has emerged as a competitor to this established system. In this new technology ozone, a powerful disinfectant, is produced using electricity and oxygen in a stacked generator. This allows energy efficiency and easy operation for small-scale water treatment.

Despite both technologies aiming to benefit human health by removing pathogens, they do have hidden health impacts due to emissions and energy consumption during setup and operation – factors that are rarely considered. Now, Jeremy Guest, Thanh Nguyen and their team from the University of Illinois have decided to put this emerging technology to the test.

Read the full article in Chemistry World.


Human health trade-offs in the disinfection of wastewater for landscape irrigation: microplasma ozonation vs. chlorination

Shengkun Dong, Jun Li, Min-Hwan Kim, Sung-Jin Park, J. Gary Eden, Jeremy S. Guest and Thanh H. Nguyen

Environ. Sci.: Water Res. Technol., 2017, Advance Article

DOI: 10.1039/C6EW00235H

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Halting the flow of microplastics

Written for Chemistry World by Polly-Anna Ashford

Having investigated the fate of microplastics in different wastewater treatment processes, scientists in the US found that most plants are not designed to fully remove the small litter particles.

Microplastics are tiny particles (<5 mm in size) that arise from the degradation of larger plastics in the ocean as well as direct release from common household products such as toothpaste. Their full potential impact on aquatic ecosystems is still unknown, but they can be ingested by small organisms and may release harmful chemicals.

Melissa Duhaime and colleagues from the University of Michigan now compared the effectiveness of wastewater treatment plants using three different clean-up methods.

Read the full article in Chemistry World.


Fate of microplastics and other small anthropogenic litter (SAL) in wastewater treatment plants depends on unit processes employed

Marlies R. Michielssen, Elien R. Michielssen, Jonathan Ni and Melissa B. Duhaime

Environ. Sci.: Water Res. Technol., 2016, Advance Article

DOI: 10.1039/C6EW00207B, Paper

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Emerging Investigators Series: Haizhou Liu

Dr Haizhou Liu, University of California, Riverside

Dr Haizhou Liu is an Assistant Professor of Chemical and Environmental Engineering at the University of California, Riverside. He received his Ph.D. in Environmental Engineering from University of Washington in 2010, and has a M.S. in Civil Engineering from University of Washington and B.S. in Environmental Engineering from Sichuan University, China. Prior to joining UC Riverside, he worked as a postdoctoral researcher at UC Berkeley for two years on soil remediation projects. Haizhou’s research interests include water chemistry, colloidal metal behavior and redox chemistry in drinking water, water reuse and treatment, environmental remediation, electrochemistry and catalysis. Haizhou’s current research focuses on the applications of aquatic chemistry principles to our benefits in engineered applications such as water purification and wastewater reclamation, as well as to understand how various redox and interfacial chemical processes influence natural systems such as estuarine, surface and groundwater.

Read Haizhou’s Emerging Investigators review on the “Occurrence and speciation of chromium in drinking water distribution systems” and find out more about his work  in the interview below:

How has your research evolved from your first to your most recent article?

My first research experience dates back to my freshman year. I participated in an undergraduate research to develop desulfurization technologies to treat flue gas. It was an exciting opportunity to learn how to design an experiment, collect and analyze the data, and come up with a hypothesis to test it. From my first research experience, I became very interested in environmental chemistry and have been working in this area since then. My most recent research is focused on water chemistry, especially the fate of metal and metalloids in water distribution system.

What aspect of your work are you most excited about at the moment?

I am most excited about the complex interfacial and redox-driven chemical processes in the water distribution system. Our ongoing work shows that the water distribution system has many reactive components, and water chemistry plays a key role in maintaining the chemical stability of the system. Currently, understanding of distribution system chemistry has been mostly limited to a few empirical chemical indices. Awareness of redox reactivities of accumulated contaminants in corrosion products with residual disinfectants and source waters is largely unknown. Outcome from our work can help to increase access to clean water and improve urban infrastructure – two National Academy of Engineering Grand Challenges.

In your opinion, what is the biggest challenge for drinking water distribution systems?

More cities in the future will deal with aging water infrastructure. Although distribution systems might be functional when operating as they have been for decades, the risks are going to come when source waters are abruptly switched in response to droughts or a decision to use a new water supply. The biggest challenge is how to minimize the adverse impact on water quality when using alternative water sources in the future, while maintaining the chemical integrity of the water distribution system. As environmental engineers, we have sadly seen the catastrophic consequences of ignoring the complex chemical reactivity of water distribution systems when switching the source of surface waters as in Flint, Michigan. Ideas developed through my ongoing work could aid engineers and water system managers in preventing the next Flint. To address these universal challenges and to prevent another Flint crisis with a variety of toxic inorganic contaminants – including but not limited to lead – it is urgent to investigate the redox-driven in situ mobilization of accumulated contaminants from distribution systems.

What do you find most challenging about your research?

The water distribution system is such a complex “reactor”. The focus of redox chemistry in our work is a pivotal step to advance our knowledge towards a comprehensive investigation, but it requires very careful and vigorous investigation of fundamental chemistry, and this take time. In addition, many issues of water distribution systems are still poorly understood, including biofilm, galvanic and bio-corrosion, mass transfer and diffusion processes at the pipe-water interface. This requires a collaborative effort among environmental engineers to solve the problems.

In which upcoming conferences or events may our readers meet you?

I will attend the American Chemical Society Spring Meeting in San Francisco (April 2017), and the biennial conference of Association of Environmental Engineering Science Professors at University of Michigan (June 2017).

How do you spend your spare time?

As an assistant professor, I don’t have too much spare time outside work, but when there is a change, I play tennis or beach volleyball in sunshine California. I also fall in love with learning Italian and other Romantic languages.

Which profession would you choose if you were not a scientist?

I would like to be a pianist. I enjoy classical music very much (favorite composer Mozart) and would like to be good at playing it.

Can you share one piece of career-related advice or wisdom with other early career scientists?

Work hard, present your work at conferences and interact with you colleagues. All of these will help build a positive system and make your more creative and productive.


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