Article
Environmental Sciences
Marija Gregov, Ana Jurinjak Tusek, Davor Valinger, Maja Benkovic, Tamara Jurina, Lucija Surac, Livia Kurajica, Marin Matosic, Jasenka Gajdos Kljusuric, Magdalena Ujevic Bosnjak, Josip Curko
Summary: This study investigated the effects of water properties, ozone dosage and duration, and ammonium on bromate formation during surface water ozonation. The results showed that the season, ozone dosage and duration, and ammonium were correlated with the output variables. Multiple linear regression and piecewise linear regression models were used to predict the relationships. The artificial neural network (ANN) model with the season, ozone dosage and duration, ammonium, and near-infrared spectra provided an effective way to describe water ozonation results, with the multilayer perception neural network 14-14-5 being the best ANN model.
Article
Engineering, Environmental
Yu Li, Jie Li, Jia Ding, Zirong Song, Bochen Yang, Chuanming Zhang, Baohong Guan
Summary: The presence of nanoplastics in drinking water has caused concerns due to inevitable exposure to human beings. This study focused on the degradation of nano-sized polystyrene plastics using two commonly used disinfection techniques, ozone and chlorination. Results showed that ozone achieved higher molecular weight degradation and mineralization compared to chlorination, indicating ozone as a potential technique to tackle nanoplastics pollution in drinking water treatment plants.
CHEMICAL ENGINEERING JOURNAL
(2022)
Review
Environmental Sciences
Manish Kumar, Shashank Shekhar, Rakesh Kumar, Pawan Kumar, Muthusamy Govarthanan, Tushara Chaminda
Summary: This article summarizes the formation of various disinfection by-products (DBPs) during wastewater treatment and their treatment methods, discusses permissible limits and concentrations of DBPs in water systems globally, and their consequences on humans. It also critically reviews various remediation approaches and highlights the need for further advancements in detection and removal of hazardous DBPs before commercial-scale implementation.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Amandine Michel, Dominic Armbruster, Angelika Benz-Birck, Nina Deppermann, Reinhard Doetzer, Markus Floers, Markus Frericks, Shanghua Li, Sebastian Gebler, Tom Schroeder, Wolfram Seitz
Summary: This paper proposes a tiered approach for the risk evaluation of transformation products (TPs) formed from pesticide residues during drinking water treatment. By analyzing the concentrations of pesticide residues in raw water and conducting toxicity testing, the safety of drinking water can be ensured.
ENVIRONMENTAL SCIENCES EUROPE
(2022)
Review
Environmental Sciences
Begum Nazia Jahan, Lin Li, Krishna R. Pagilla
Summary: Disinfection in water treatment systems helps eliminate health risks, but can also produce harmful disinfection by-products. Formation of potentially carcinogenic bromate during ozonation of bromide-containing waters has led to investigations into physical/chemical or biological reduction methods to mitigate the issue. Adsorption-based physical methods have been found to be more effective than chemical methods in potable water treatment.
Review
Chemistry, Physical
Fernando J. Beltran, Ana Rey, Olga Gimeno
Summary: The study reviewed the application of catalytic ozonation processes in drinking water treatment for the removal of humic substances and disinfection byproducts. Besides presenting a brief history of disinfectant use and alternative oxidants, it focused on conventional AOPs recommended for treating disinfection byproducts, along with discussing the research achievements on the application of catalytic ozonation processes.
Article
Environmental Sciences
Junyi Wu, Yan Zhang, Yu Tang
Summary: This study analyzed the removal effectiveness of MPs in a DWTP, showing that the removal efficiency for MPs <20pm needs improvement. The results indicate that more attention should be paid to the fragmentation of MPs and the removal rate of MPs <20pm in a DWTP.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Multidisciplinary Sciences
Mohammad Rizwan Khan, Mohammad Azam, Ahmad Moid Alammari
Summary: A rapid, sensitive and selective method using UPLC-MS/MS was optimized to quantify perchlorate in drinking water treated with ozonation and chlorination disinfection processes. Results showed that metropolitan water was less contaminated than bottled water, and the proposed technique was efficient and cost-effective for routine determination of perchlorate in water samples.
JOURNAL OF KING SAUD UNIVERSITY SCIENCE
(2021)
Article
Engineering, Environmental
Nicola Gaertner, Laura Germann, Kennedy Wanyama, Henry Ouma, Regula Meierhofer
Summary: The study demonstrated that three strategies were implemented in Eastern Uganda to reduce the risk of recontamination of drinking water during transport and storage. Among these strategies, using cleaned improved containers showed the lowest levels of recontamination. Transporting water in containers with wide openings and increasing WASH education visits played a positive role in reducing E. coli recontamination levels.
Article
Environmental Sciences
Ze-hua Liu, Zhi Dang, Yu Liu
Summary: The article discusses the scientific challenges regarding EDCs in drinking water, including the acceptable EDC concentration, regulation of chlorinated byproducts, and the regulated concentration for each chlorinated EDC.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Environmental
Woongbae Lee, Sangki Choi, Hyunjin Kim, Woorim Lee, Minju Lee, Heejong Son, Changha Lee, Min Cho, Yunho Lee
Summary: This study assessed and compared the efficiencies of ozonation and ozone with hydrogen peroxide for the removal of organic micropollutants (OMPs), as well as the inactivation of bacteria and viruses, and the formation of bromate and biodegradable organics in municipal wastewater effluent. The results showed that ozonation effectively eliminated 39 OMPs, with 22 OMPs achieving a removal rate of 54 ± 14% at an ozone dosage of 0.5 gO(3)/gDOC. The concentration and exposure time of ozone were positively correlated with microbial inactivation levels, and O-3/H2O2 minimized bromate formation but decreased bacteria/virus inactivation. Ozonation also produced biodegradable organics, which could be removed through post-biodegradation treatment.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Zhiyong Wang, Kuiling Li, Jingjing Guo, Hongxin Liu, Zimou Liu, Yong Zhang, Jun Wang
Summary: The trade-off between micropollutant abatement and bromate formation is inevitable during the ozonation of bromide-containing water. To overcome this compromise, a novel adsorption enhanced membrane contact ozonation (AEMCO) process was developed, which accelerated the oxidation of micropollutants and reduced the formation of bromate. In the AEMCO process, the removal efficiency of ciprofloxacin was 97.15% while the yield of bromate was 0.7 μg/L, compared to 39.96% and 8.3 μg/L in the conventional MCO process. Additionally, a reformative Hatta number (Ha-CIP) was used to evaluate the relationship between interface adsorption and chemical reactions, guiding the adjustment of operating parameters. These findings provide a potent strategy to balance micropollutant abatement and bromate formation during the ozonation process.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Muhammad Saboor Siddique, Hongbo Lu, Xuejun Xiong, Hasan Fareed, Nigel Graham, Wenzheng Yu
Summary: This study investigated the influence of pH on the treatment of water-extractable organic matter (WEOM) and the formation potential of disinfection by-products (DBPs) during the pre-ozonation/nanofiltration process. The results showed that higher pH levels led to reduced water flux and membrane rejection due to increased electrostatic repulsion. Additionally, ozonation at higher pH levels transformed large molecular weight substances into smaller hydrophilic fractions and affected the formation potential of DBPs.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Review
Engineering, Environmental
Alicia L. Garcia-Costa, Arminda Alves, Luis M. Madeira, Monica S. F. Santos
Summary: Cancer is one of the deadliest diseases, and the increasing use of cytostatic drugs in chemotherapy has led to the presence of these compounds in natural water bodies, necessitating research on their elimination. This review compiles information on various oxidation processes for cytostatics' degradation, discussing efficiency, operating conditions, transformation byproducts, and toxicity. Recommendations for future work in this area are also outlined.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Yoshika S. Crider, Sanjeena Sainju, Rubika Shrestha, Guillaume Clair-Caliot, Ariane Schertenleib, Bal Mukunda Kunwar, Madan R. Bhatta, Sara J. Marks, Isha Ray
Summary: Over 2 billion people lack access to safe drinking water, but passive chlorination technologies have the potential to improve how rural households gain access to safe drinking water.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Environmental Sciences
Rama Pulicharla, Francois Proulx, Sonja Behmel, Jean-B Serodes, Manuel J. Rodriguez
Summary: This study aimed to investigate the occurrence of contaminants of emerging interest in surface water and drinking water in five drinking water treatment plants in Quebec, Canada. Seven targeted CEI were analyzed in the water samples, showing varying concentration levels and removal efficiencies among the treatment plants.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Water Resources
John McGrath, Mahnoush Maleki, Christian Bouchard, Genevieve Pelletier, Manuel J. Rodriguez
Summary: This study presents a methodology for estimating free residual chlorine concentrations in water distribution systems, incorporating different degradation kinetics based on pipe material, age, and diameter. Field sampling and laboratory tests were conducted to estimate bulk kinetic constants, with results showing that pipe wall kinetics tend to dominate the degradation process in older pipes. The developed methodology can enhance the prediction of FRCC through hydraulic and water quality modeling.
URBAN WATER JOURNAL
(2021)
Article
Environmental Sciences
Hongjian Wu, Caetano C. Dorea
Summary: Chlorine is widely used in humanitarian emergency water supply as a disinfectant, but its effective application may be limited by uncertainty in initial dose determination. Through research, power models and parallel models have been identified as a strong foundation for developing a chlorine dose predictive tool.
ENVIRONMENTAL TECHNOLOGY
(2022)
Article
Development Studies
Francoise Tardif, Flavie St-Pierre, Genevieve Pelletier, Manuel J. Rodriguez
Summary: This study focuses on the management of protection areas in water supply watersheds, including the calculation of overland travel times and river travel times. The estimation of overland travel times requires abundant data and expertise, and has important implications for land use planning.
JOURNAL OF ENVIRONMENTAL PLANNING AND MANAGEMENT
(2022)
Article
Environmental Sciences
Gyan Chhipi-Shrestha, Manuel Rodriguez, Sonja Behmel, Rama Pulicharla, Francois Proulx, Kasun Hewage, Rehan Sadiq
Summary: Contaminants of Emerging Concern in natural water pose ecological risks, with uncertainties in risk estimates. Classification of ecotoxicity values based on environmental parameters can reduce uncertainty in risk estimates.
Article
Environmental Sciences
Elham Ahmadpour, Stephan Halle, Isabelle Valois, Patrick Eddy Ryan, Sami Haddad, Manuel Rodriguez, Badr El Aroussi, Sabrina Simard, Ianis Delpla, Francois Proulx, Robert Tardif, Maximilien Debia
Summary: This study evaluates the spatial and temporal variations in trichloramine and trichloromethane concentrations within indoor swimming pools. The results show significant variations in concentration over time, suggesting that the common practice of collecting a single 2-hour air sample does not accurately represent the true exposure and health risks for workers. A new 8-hour sampling strategy or a full-shift strategy is recommended for accurate assessment.
JOURNAL OF OCCUPATIONAL AND ENVIRONMENTAL HYGIENE
(2022)
Article
Information Science & Library Science
Jerome Cerutti, Irene Abi-Zeid, Luc Lamontagne, Roxane Lavoie, Manuel J. Rodriguez
Summary: This paper describes a process of knowledge acquisition and modeling to support complex decision-making for protecting water sources. Through online surveys, interviews, and thematic analysis, structured descriptions of past problems and implemented solutions were gathered and organized. A knowledge-based recommender system prototype, based on case-based reasoning, was developed to guide decision-makers in developing solutions based on past experiences.
KNOWLEDGE MANAGEMENT RESEARCH & PRACTICE
(2022)
Article
Environmental Sciences
Kelsey Shaw, Michael Vogel, Nienke Andriessen, Thomas Hardeman, Caetano C. Dorea, Linda Strande
Summary: This study evaluated different types of conditioners on dewatering performance of different blackwater samples from different countries. It found that bio-based and synthetic conditioners have similar effects. The optimal dosage for synthetic conditioners and chitosan can be predicted based on total solids concentrations, while the dosage for starch and tannin-based conditioners can be predicted based on electrical conductivity and colloid titration.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Elham Ahmadpour, Stephane Halle, Isabelle Valois, Patrick Eddy Ryan, Sami Haddad, Manuel Rodriguez, Robert Tardif, Maximilien Debia
Summary: Since 1995, Hery's trichloramine sampling procedure has been widely used to determine trichloramine exposure in indoor swimming pools. This study investigates the effects of different cassette assemblies and sampling flow rates on the levels of measured trichloramine. Laboratory tests and workplace measurements were conducted to evaluate the prefiltering strategies and the influence of flow rates on trichloramine concentrations. The results suggest that using a separable cassette assembly prevents overestimations of trichloramine levels and that there are no significant differences in trichloramine concentrations at different flow rates in swimming pools.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Celia Ceolin Baia, Taise Ferreira Vargas, Vivian Azevedo Ribeiro, Josilena de Jesus Laureano, Rachel Boyer, Caetano Chang Dorea, Wanderley Rodrigues Bastos
Summary: This study identified high fecal contamination and higher susceptibility to contaminants in groundwater in the Western Amazonian city of Porto Velho. This highlights the importance of improving water, sanitation, and hygiene services, as well as taking effective actions to combat groundwater degradation, improve environmental quality, and protect public health.
Article
Environmental Sciences
Alexa Bennett, Jeffrey Demaine, Caetano Dorea, Alexandra Cassivi
Summary: The heightened interest in drinking water research aims to bridge the knowledge gaps in water and health globally. This study provides a global overview of publications on drinking water and health in low-and lower-middle-income countries (LLMICs) using bibliometrics and network analysis. While the United States and the United Kingdom remain dominant in this field, India has surpassed the US in terms of publication volume, and Bangladesh ranks third in international collaborations. Iran and Pakistan are also emerging as major contributors. The themes of contamination, diarrheal disease, and water resources characterize the majority of research in this area.
JOURNAL OF WATER AND HEALTH
(2023)
Article
Engineering, Chemical
C. Zimmer, C. C. Dorea
Summary: This Perspective presents evidence of discrepancies between laboratory and field performance of point of use water treatment (POUWT) techniques, with a focus on the origin of the reported log reduction value (LRV) comparison estimates by the WHO. Only peer-reviewed articles reporting both laboratory and field LRVs for the same POU technology were considered. The Perspective discusses explanations for these discrepancies, the potential implications of the laboratory versus field data discrepancy, and the risks of conflating the two. As a result, a strategy is proposed to bridge the research gap and improve health risk assessments and recommendations by public health entities and manufacturers of POUWT products.
Article
Chemistry, Multidisciplinary
Rama Pulicharla, Francois Proulx, Sonja Behmel, Jean-B Serodes, Manuel J. Rodriguez
Summary: This study monitored seven contaminants in an urbanized watershed in Quebec, Canada and found that three of them were consistently detected at various sampling sites with concentrations ranging from a few hundred ng/L. Wastewater treatment plant and septic system discharges were identified as significant sources of CECs, and the concentrations of contaminants were higher in late winter compared to summer.
Article
Environmental Sciences
Carlos Pena-Guzman, Alejandro Orduz, Manuel Rodriguez, David Perez
Summary: Accurate measurements of pollution in urban basins are crucial for effective management strategies. Reaeration rates can be determined using various methods, but the results may vary significantly depending on the variables used. Velocity and water depth are the most sensitive hydraulic variables that strongly influence the reaeration rates.
ENVIRONMENTAL ENGINEERING AND MANAGEMENT JOURNAL
(2021)
Article
Development Studies
S. Behmel, M. Damour, R. Ludwig, M. J. Rodriguez
Summary: This paper introduces a holistic, intelligent decision-support system framework for planning, managing, and optimizing surface water quality monitoring programs. The system architecture is designed based on a complex process that requires multiple variables, rules, and subject matter expert knowledge. Through case studies, the feasibility of the IDSS is demonstrated, and future testing plans are outlined for further validation.
JOURNAL OF ENVIRONMENTAL PLANNING AND MANAGEMENT
(2021)
