Article
Multidisciplinary Sciences
Adam Diedrich, Mano Sivaganesan, Jessica R. Willis, Amirreza Sharifi, Orin C. Shanks
Summary: Municipal stormwater systems are designed to collect, transport, and discharge precipitation from a defined catchment area into local surface waters. However, these discharges may contain unsafe levels of fecal waste.
Article
Chemistry, Analytical
Kiran Kumar Vadde, Duc C. Phan, Sina V. Moghadam, Arash Jafarzadeh, Akanksha Matta, Drew Johnson, Vikram Kapoor
Summary: Fecal pollution of surface waters in the karst-dominated Edwards aquifer is a significant concern that requires integrating data related to environmental processes and land management practices with microbial source tracking for effective mitigation strategies.
ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS
(2022)
Article
Multidisciplinary Sciences
Yuno Meuchi, Miu Nakada, Keisuke Kuroda, Seiya Hanamoto, Akihiko Hata
Summary: This study evaluated the usefulness of FPH subgroups, PMMoV, and crAssphage as indicators of source-specific fecal contamination and viral inactivation. FPH subgroups, PMMoV, and crAssphage were associated with pig and human fecal contamination, and showed different behaviors in viral inactivation. FRNA phage genogroups, especially the GIV-FRNA phage, were highly inactivated during the warm months in Japan.
Article
Environmental Sciences
John J. Hart, Megan N. Jamison, James N. McNair, Sean A. Woznicki, Ben Jordan, Richard R. Rediske
Summary: This study used PCR technology and microbial source tracking (MST) markers to identify the sources of fecal pollution in two watersheds. The results showed a significant association between different markers and watershed characteristics, indicating that areas with low-infiltration soil groups and high agricultural land use are more vulnerable to fecal contamination. The study combines watershed characteristics with MST results to provide comprehensive insight for implementing effective water management practices.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Microbiology
Christopher Sinigalliano, Kiho Kim, Maribeth Gidley, Kathy Yuknavage, Karen Knee, Dean Palacios, Charito Bautista, Anthony Bonacolta, Hyo Won Lee, Larry Maurin
Summary: The study identified hotspots of human FIB contamination along the western Saipan Lagoon shoreline and at a popular tourist bathing area known as the Grotto, coinciding with areas of high submarine groundwater discharge and nitrogen inputs. Widespread moderate levels of dog fecal contamination were observed across the island, while high levels of seabird fecal contamination were more sporadic and concentrated in the less developed northeast region of Saipan. No significant levels of cow or pig fecal markers were detected in coastal water samples. The study demonstrates the analytical capacity of MST technology in assisting resource management in CNMI to address water quality issues related to land-based sources of microbial contaminants in coastal waters.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Microbiology
Hongxia Liang, Zhisheng Yu, Bobo Wang, Fabrice Ndayisenga, Ruyin Liu, Hongxun Zhang, Gang Wu
Summary: This study successfully distinguished the fecal contributions of multiple sources in a rural river using microbial source tracking methods. The combined application of molecular markers and the FEAST program shows promising potential for identifying fecal sources from a more comprehensive perspective.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Environmental Sciences
Rose Ragot, Florence Lessard, Andre Belanger, Richard Villemur
Summary: Waterborne diseases are spread through fecal contamination of water and often originate from multiple sources. A study conducted in Quebec, Canada found that wild animals may contribute to fecal contamination in surface waters. This reinforces the importance of monitoring multiple animal species using mtDNA metabarcoding.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Zhongfu Zhang, Jinfeng Qi, Qingguo Yu, Shenglong Wang, Hang Wang
Summary: This study surveyed Jianhu Lake in southwestern China to analyze the contributions of different sources to the lake microbiomes. It found that town sewage and duck aquaculture were the main contributors to the variations in lake microbiomes. Unknown sources also had a significant impact. The study tracked the specific sources of fecal pollution and found that human feces were the primary source. These findings highlight the threats posed by fecal-related anthropogenic sources to the survival of indigenous lake microbiomes.
ENVIRONMENTAL POLLUTION
(2023)
Article
Engineering, Environmental
Meysam Khodaparast, Dave Sharley, Nickala Best, Stephen Marshall, Travis Beddoe
Summary: Increasing human population growth worldwide puts pressure on water quality. Timely diagnosis of human faecal contamination of water remains a challenge. This study developed a field-deployable method for rapid and reliable detection of human faecal pollution in environmental waters, which has high sensitivity and specificity and can be completed within 10 minutes.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2022)
Article
Microbiology
Amine M. M. Boukerb, Cyril Noel, Emmanuelle Quenot, Bernard Cadiou, Julien Cheve, Laure Quintric, Alexandre Cormier, Luc Dantan, Michele Gourmelon
Summary: This study aimed to explore and compare the fecal bacterial communities of wild waterbirds with other sources, and to develop new MST markers for waterbirds. Significant differences were observed between wild waterbirds and other groups, suggesting the presence of distinct fecal microbiomes in some waterbird members that allow the design of qPCR MST markers. Additionally, potential human and environmental pathogens associated with bird droppings were detected, emphasizing the importance of further gut microbiome studies and MST marker development involving other wildlife hosts to mitigate unknown fecal pollution sources.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Engineering, Environmental
Watsawan Sangkaew, Akechai Kongprajug, Natcha Chyerochana, Warish Ahmed, Surapong Rattanakul, Thammanitchpol Denpetkul, Skorn Mongkolsuk, Kwanrawee Sirikanchana
Summary: This study evaluated four human-associated MST marker genes and found that HPyVs and crAssphage are highly sensitive and specific for tracking sewage pollution in aquatic environments of Thailand. The bacterial marker genes also showed high sensitivity and specificity, and using both viral and bacterial markers could improve specificity.
Article
Environmental Sciences
Elizabeth R. R. Hill, Chan Lan Chun, Kerry Hamilton, Satoshi Ishii
Summary: Contamination of water with bacterial, viral, and protozoan pathogens can cause human diseases. Microbial source tracking methods have been developed to identify the sources of fecal contamination in water. In this study, a novel microfluidic quantitative PCR platform was developed to simultaneously quantify various pathogens and microbial source tracking markers, which can be used to monitor and improve water quality.
Article
Biotechnology & Applied Microbiology
Su Jin Nam, Dong Woo Kim, Seung Hun Lee, Ok Kyung Koo
Summary: Food poisoning outbreaks in schools can cause physical and psychological harm to students, as well as time and economic loss. This study evaluated the use of microbial source tracking (MST) and fecal indicator bacteria (FIB) to trace contamination in school cafeterias. The most contaminated areas were the stove valve, faucet, and hand-washer. Continuous monitoring of frequent hand-contact areas is recommended to maintain hygiene in school cafeterias.
JOURNAL OF FOOD PROTECTION
(2023)
Review
Engineering, Chemical
Enze Li, Faizan Saleem, Thomas A. Edge, Herb E. Schellhorn
Summary: This review highlights the significance of biological fecal indicators in fecal pollution detection, as well as the crucial role of developing practical tools for mitigating the health risks associated with fecal pollution.
Article
Environmental Sciences
Warish Ahmed, Sudhi Payyappat, Michele Cassidy, Nathan Harrison, Colin Besley
Summary: This study assessed the performance characteristics of marker genes for human wastewater and animal scat, including host sensitivity, host specificity, and concentration. Several human wastewater-associated marker genes exhibited absolute host sensitivity and specificity, while only one horse scat-associated marker gene showed absolute host sensitivity. Concentrations of certain marker genes were higher in human wastewater samples, indicating their potential for detecting diluted human fecal pollution in estuarine waters. It is necessary to test animal scat-associated marker genes along with human wastewater-associated marker genes to accurately determine fecal sources in environmental waters.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Review
Environmental Sciences
Warish Ahmed, Stuart L. Simpson, Paul M. Bertsch, Kyle Bibby, Aaron Bivins, Linda L. Blackall, Silvia Bofill-Mas, Albert Bosch, Joao Brandao, Phil M. Choi, Mark Ciesielski, Erica Donner, Nishita D'Souza, Andreas H. Farnleitner, Daniel Gerrity, Raul Gonzalez, John F. Griffith, Pradip Gyawali, Charles N. Haas, Kerry A. Hamilton, Hapuarachchige Chandithal Hapuarachchi, Valerie J. Harwood, Rehnuma Haque, Greg Jackson, Stuart J. Khan, Wesaal Khan, Masaaki Kitajima, Asja Korajkic, Giuseppina La Rosa, Blythe A. Layton, Erin Lipp, Sandra L. McLellan, Brian McMinn, Gertjan Medema, Suzanne Metcalfe, Wim G. Meijer, Jochen F. Mueller, Heather Murphy, Coleen C. Naughton, Rachel T. Noble, Sudhi Payyappat, Susan Petterson, Tarja Pitkanen, Veronica B. Rajal, Brandon Reyneke, Fernando A. Roman, Joan B. Rose, Marta Rusinol, Michael J. Sadowsky, Laura Sala-Comorera, Yin Xiang Setoh, Samendra P. Sherchan, Kwanrawee Sirikanchana, Wendy Smith, Joshua A. Steele, Rosalie Subburg, Erin M. Symonds, Phong Thai, Kevin Thomas, Josh Tynan, Simon Toze, Janelle Thompson, Andy S. Whiteley, Judith Chui Ching Wong, Daisuke Sano, Stefan Wuertz, Irene Xagoraraki, Qian Zhang, Amity G. Zimmer-Faust, Orin C. Shanks
Summary: Monitoring pathogens like SARS-CoV-2 in wastewater using RT-PCR is effective for public health information, but there is a lack of standardized protocols for wastewater surveillance. Key strategies for improving accuracy include QA/QC measures, representative sampling, virus concentration, and clear data interpretation guidelines.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Liam J. Reynolds, Laura Sala-Comorera, Mohd Faheem Khan, Niamh A. Martin, Megan Whitty, Jayne H. Stephens, Tristan M. Nolan, Eadaoin Joyce, Nicola F. Fletcher, Cormac D. Murphy, Wim G. Meijer
Summary: Wastewater surveillance is a cost-effective tool for monitoring SARS-CoV-2 transmission in a community. This study demonstrates the usefulness of coprostanol as a population biomarker for wastewater surveillance studies, as it exhibits the lowest variation in wastewater samples and shows strong correlations with COVID-19 cases when levels are normalized to coprostanol.
Article
Multidisciplinary Sciences
Timothy J. Wade, Benjamin F. Arnold, Ken Schiff, John M. Colford, Stephen B. Weisberg, John F. Griffith, Alfred P. Dufour
Summary: Children are at higher risk of swimming-associated illness due to fecally-contaminated recreational waters, especially at sites impacted by human fecal contamination. Gastrointestinal symptoms are the most sensitive health endpoint associated with the fecal indicator bacteria Enterococcus spp., followed by respiratory symptoms in children. The source of fecal contamination and the intensity of swimming exposure are important factors affecting the association between Enterococcus spp. and swimming-related illness.
Article
Environmental Sciences
Ruud Steenbeek, Erik Emke, Dennis Vughs, Joao Matias, Tim Boogaerts, Sara Castiglioni, Marina Campos-Manas, Adrian Covaci, Pim de Voogt, Thomas ter Laak, Felix Hernandez, Noelia Salgueiro-Gonzalez, Wim G. Meijer, Mario J. Dias, Susana Simoes, Alexander L. N. van Nuijs, Lubertus Bijlsma, Frederic Been
Summary: This study assessed crack cocaine use on a broad scale, both temporal and in cities across Europe, using wastewater-based epidemiology. The results highlight the importance of monitoring community loads of crack cocaine use.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Liam J. Reynolds, Gabriel Gonzalez, Laura Sala-Comorera, Niamh A. Martin, Alannah Byrne, Sanne Fennema, Niamh Holohan, Sailusha Ratnam Kuntamukkula, Natasha Sarwar, Tristan M. Nolan, Jayne H. Stephens, Megan Whitty, Charlene Bennett, Quynh Luu, Ursula Morley, Zoe Yandle, Jonathan Dean, Eadaoin Joyce, John J. O'Sullivan, John M. Cuddihy, Angeline M. McIntyre, Eve P. Robinson, Darren Dahly, Nicola F. Fletcher, Michael Carr, Cillian De Gascun, Wim G. Meijer
Summary: Quantification of SARS-CoV-2 RNA in wastewater is a valuable tool for monitoring the prevalence of COVID-19 at a community level, complementing case-based surveillance systems. This study demonstrates the validity of wastewater surveillance for monitoring infection spread and identifying circulating variants. The findings suggest that wastewater monitoring can be a cost-effective alternative when sequencing capacity is limited.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Paul A. Den A. Uyl, Luke R. Thompson, Reagan M. Errera, James M. Birch, Christina M. Preston, Colleen Yancey, William E. Ussler III, Subba Rao Chaganti, Steven A. Ruberg, Gregory J. Doucette, Gregory J. Dick, Christopher A. Scholin, Kelly D. Goodwin
Summary: This study demonstrated the importance of using a third-generation Environmental Sample Processor (3G ESP) integrated with a long-range autonomous underwater vehicle (LRAUV) for autonomous sampling during cyanobacterial harmful algal blooms (cyanoHABs) in western Lake Erie. Results showed equivalency between autonomous and manual methods, as well as additional sampling capacity and revealed differences between field seasons.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Meteorology & Atmospheric Sciences
Levent Gorgu, Daniel Hawtree, Michael J. O'Grady, Conor Muldoon, Bartholomew Masterson, Wim G. Meijer, John J. O'Sullivan, Gregory M. P. O'Hare
Summary: Historical meteorological datasets are crucial for climate modeling and weather forecasting. GRIB, the widely-used data format, is not analysis-ready without preprocessing. The MeRA Data Extractor toolkit, introduced in this article, allows intuitive and fast extraction and preprocessing of data from the MeRA dataset, which is a high-resolution climatic reanalysis of Irish weather data. This open-source toolkit is especially valuable for climate modeling research in Europe.
METEOROLOGICAL APPLICATIONS
(2023)
Article
Environmental Sciences
Afeefa A. Abdool-Ghany, Peter J. Sahwell, James Klaus, Maribeth L. Gidley, Christopher D. Sinigalliano, Helena M. Solo-Gabriele
Summary: This study evaluated seaweed as a potential source of bacteria in beach waters and found that decomposing seaweed provides an additional substrate for enterococci to grow. The results indicate that enterococci with elevated levels of human fecal markers persist in seaweed and sediment, contributing to increased bacterial levels in nearshore waters.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
M. Cogliati, S. Arikan-Akdagli, A. Barac, A. C. Bostanaru, S. Brito, N. Cerikcioglu, M. A. Efstratiou, C. Ergin, M. C. Esposto, M. Frenkel, J. P. Gungneux, A. Gitto, C. I. Goncalves, H. Guegan, N. Gunde-Cimerman, M. Guran, E. Jonikaite, M. Katarzyte, L. Klingspor, M. Mares, W. G. Meijer, W. J. G. Melchers, J. Meletiadis, V. Nastasa, M. Novak Babic, D. Ogunc, B. Ozhak, A. Prigitano, S. Ranque, L. Romano, R. O. Rusu, R. Sabino, A. Sampaio, S. Silva, J. H. Stephens, M. Tehupeiory-Kooreman, A. Velegraki, C. Verissimo, E. Segal, J. Brandao
Summary: The study used data from the Mycosands survey to investigate the factors affecting the distribution of yeasts and molds along European shores. Environmental factors such as climate, soil properties, and water conditions were analyzed using species distribution modelling. The results showed that yeasts and molds have different distributions along European shores, with yeasts being more tolerant of low temperatures and molds showing affinity with specific soil compositions and water conditions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Review
Microbiology
Nastassia Virginia Patin, Kelly D. Goodwin
Summary: The increasing interest in marine microbiome and eDNA sequence data calls for standardized sample collection and preservation practices. This study provides guidelines based on published methods and field sampling experiences, covering environmental considerations, sample processing strategies, sample storage options, and eDNA extraction protocols. While universal recommendations are impossible due to the wide range of eDNA applications, information is provided to design fit-for-purpose protocols. Rigorous decontamination protocols, pilot studies for filtration volume determination, and prioritizing sample freezing are broadly recommended. An annotated list of studies testing these parameters is included.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Microbiology
N. V. Patin, K. D. Goodwin
Summary: The study compared long- and short-read sequencing of marine metagenomes, finding a wide range of long-read metagenome qualities and minimal improvements to microbiome analyses. However, long reads were able to generate draft genomes of eukaryotic algal species and provide full-length marker gene sequences of zooplankton species. This suggests that long-read sequencing can provide greater genetic insight into the wide diversity of eukaryotic phyto- and zooplankton present in marine environments.
Article
Environmental Sciences
Shen Jean Lim, Luke R. R. Thompson, Kelly D. D. Goodwin
Summary: The methane ice worm Sirsoe methanicola has been found to colonize methane hydrates in cold seeps, but little is known about these organisms. Through metagenomic analysis, we have obtained more genetic information about S. methanicola, including its nuclear rRNA genes, mitochondrial genome, and other protein-coding genes. The protein-coding genes identified in the metagenomes are involved in various cellular processes, and we also found homologs of cytochrome P450 involved in polycyclic aromatic hydrocarbon metabolism.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Engineering, Environmental
Niamh A. Martin, Laura Sala-Comorera, Guanghai Gao, Aisling Corkery, Liam J. Reynolds, Tristan M. Nolan, Megan Whitty, John J. O'Sullivan, Wim G. Meijer
Summary: The EU Bathing Water Directive requires member states to assess bathing water quality using faecal indicator bacteria levels. However, this criterion is limited as it does not consider differences in hydrodynamic properties of bathing waters and assumes equal decay of all faecal pathogens. This study simulated sewage discharge events in different aquatic environments and found that faecal indicator decay is important in dispersion and advection/dispersion dominant systems. Including viral indicators could improve water quality modelling and reduce the risk of waterborne illnesses.
Article
Biology
Luke R. Thompson, Sean R. Anderson, Paul A. Den Uyl, Nastassia Patin, Shen Jean Lim, Grant Sanderson, Kelly D. Goodwin
Summary: This article introduces Tourmaline, a Python-based workflow that implements QIIME 2 and allows for automated analysis of environmental amplicon data. The workflow improves efficiency and decreases the time required for data analysis, from data generation to actionable results.
Article
Engineering, Environmental
Rong-Gui Zhu, Chang-Gui Pan, Feng-Jiao Peng, Chao-Yang Zhou, Jun-Jie Hu, Kefu Yu
Summary: This comprehensive survey investigated the occurrence, bioaccumulation, and trophic magnification of parabens and their metabolite 4-HB in a marine food web. Results showed that parabens were the predominant pollutants in marine organisms, with significant bioaccumulation from sediments. The estimated trophic magnification factor indicated biomagnification for MeP and trophic dilution for 4-HB. Overall, the risks for humans consuming marine organisms were found to be low.
Article
Engineering, Environmental
Andres F. Torres-Franco, Deborah Leroy-Freitas, Cristina Martinez-Fraile, Elisa Rodriguez, Pedro A. Garcia-Encina, Raul Munoz
Summary: Anaerobic and microalgae-based technologies have emerged as sustainable alternatives for municipal wastewater treatment. However, the presence of viruses in the treated wastewater is a major concern for reuse applications. This study assessed the ability of these technologies to reduce viruses during secondary wastewater treatment. The results showed that all technologies were effective in reducing the concentration of viruses, with microalgae-based treatment exhibiting the highest potential for reducing the disinfection requirements of treated wastewater.
Article
Engineering, Environmental
Young Gwang Kim, Sae Yun Kwon, Spencer J. Washburn, Scott C. Brooks, Ji Won Yoon, Lucien Besnard
Summary: The study uses Hg isotope ratios to identify the sources and exposure pathways of mercury in bivalves, finding that dissolved Hg phases in the water column are the primary source and exposure pathway to bivalves. This provides new insights into using bivalves as bioindicators for sediment quality monitoring.
Article
Engineering, Environmental
Hui Geng, Ying Xu, Rui Liu, Dianhai Yang, Xiaohu Dai
Summary: This study investigates the effect of cation exchange resin (CER) on the sequential recovery of hydrogen and methane from anaerobic digestion (AD) and the corresponding mechanisms. The results show that CER can simultaneously enhance the production of hydrogen and methane by promoting the solubilisation, hydrolysis, and acidification of organic matter. Additionally, CER facilitates effective contact between bacteria and organic particulates and reduces the energy barrier for mass transfer during methane production. The study also reveals changes in the microbial community structure and metagenomics during the AD process.
Article
Engineering, Environmental
Xiaojing Lin, Zhan Jin, Shunfeng Jiang, Zhiquan Wang, Suqing Wu, Ke Bei, Min Zhao, Xiangyong Zheng
Summary: Dehumidification combined with addition of absorbent resin supplement (ARS) was used to achieve rapid evaporation of non-pretreated urine, resulting in high water evaporation efficiency and nutrient recovery.
Article
Engineering, Environmental
Yangli Che, Chaoran Lin, Shen Li, Jiao Liu, Longhai Zhu, Shilei Yu, Nan Wang, Haoshuai Li, Mutai Bao, Yang Zhou, Tonghao Si, Rui Bao
Summary: Hydrodynamic processes play a crucial role in the transmission of sediments, microbial assembly, and organic carbon redistribution in the ocean. Through experiments and analysis, we found that hydrodynamics shape the assembly of microbial communities and control the redistribution of different sourced organic carbon, thereby influencing microbial-mediated biogeochemical transformation.
Article
Engineering, Environmental
Chao Chen, Yu Yang, Nigel J. D. Graham, Zhenyu Li, Xingtao Yang, Zhining Wang, Nadia Farhat, Johannes S. Vrouwenvelder, Li -an Hou
Summary: The fouling of seawater reverse osmosis membranes is a persistent challenge in desalination. This study monitored the operational performance of a desalination plant for 7 years and the fouling development in different areas of membrane modules. The findings showed that operational performance declined over time and fouling mainly occurred at the feed side of the modules, with the highest microbial diversity. Keystone species like Chloroflexi and Planctomycetes played an important role in maintaining community structure and biofilm maturation. Polysaccharides, soluble microbial products, marine humic acid-like substances, and inorganic substances contributed to fouling. Overall, biofouling had a significant impact on membrane fouling after 7 years of operation.
Article
Engineering, Environmental
Dan Li, Jieyi Sun, Yibo Fu, Wentao Hong, Heli Wang, Qian Yang, Junhong Wu, Sen Yang, Jianhui Xu, Yunfei Zhang, Yirong Deng, Yin Zhong, Ping'an Peng
Summary: Sulfidation-oxidation treatment of magnetite (Fe3O4) enhances the production of dark center dot OH, which can efficiently degrade dissolved organic matter (DOM) and accelerate carbon cycling.
Article
Engineering, Environmental
Cheng Yu, Kaijun Wang, Kaiyuan Zhang, Ruiyang Liu, Pingping Zheng
Summary: This study implemented a microaerobic-aerobic configuration in a full-scale municipal wastewater treatment facility and investigated the effects on sludge characteristics, pollutant removal, microbial community, and granulation mechanisms. The results showed successful transition from flocculent-activated sludge to well-defined AGS after two months of operation. The primary pathways for pollutant removal were simultaneous nitrification, denitrification, and phosphorus removal. Moreover, the incorporation of internal separators induced shifts in the flow pattern, which promoted granulation.
Article
Engineering, Environmental
Zhe Zhang, Shaoyang Hu, Guangrong Sun, Wei Wang
Summary: Halogenated aromatic disinfection byproducts (DBPs), such as halogenated phenols, have garnered widespread attention due to their high toxicity and prevalence. This study reports on the analysis, occurrence, and cytotoxicity of a group of emerging halogenated aromatic DBPs, known as halogenated polyhydroxyphenols (HPPs), in drinking water.
Article
Engineering, Environmental
Shengyue Chen, Jinliang Huang, Peng Wang, Xi Tang, Zhenyu Zhang
Summary: Accurate prediction of river water quality is crucial for sustainable water management. This study introduces wavelet analysis and transfer learning techniques to assist LSTM modeling, proposing a newly coupled modeling approach that improves short-term prediction of river water quality.
Article
Engineering, Environmental
Bang Du, Xinmin Zhan, Piet N. L. Lens, Yifeng Zhang, Guangxue Wu
Summary: Efficient anaerobic digestion relies on the cooperation of different microorganisms with different metabolic pathways. This study investigated the effects of different operational modes and the addition of powdered activated carbon (PAC) on ethanol metabolic pathways. The results showed that the SBR mode and the presence of CO2 facilitated ethanol metabolism towards propionate production, while the CFR mode with extended solids retention time enriched Geobacter. Adjusting operational modes and PAC addition can modulate anaerobic ethanol metabolism and enrich Geobacter.
Article
Engineering, Environmental
Wanfa Wang, Si-Liang Li, Jun Zhong, Yuanbi Yi, Fujun Yue, Zenglei Han, Qixin Wu, Ding He, Cong-Qiang Liu
Summary: This study compares the carbon biogeochemical processes in karst and non-karst regions within large thermal stratified river-reservoir systems. The results demonstrate that karst reservoirs have a reduced potential for carbon emissions and highlight the importance of considering geologic settings to improve accuracy in regional and global CO2 emission estimates.
Article
Engineering, Environmental
Chunxia Jiang, Zelong Zhao, Dong Zhu, Xiong Pan, Yuyi Yang
Summary: This study analyzed the occurrence and distribution of antibiotic resistance genes (ARGs) in different environmental media of the Yangtze River using metagenomics. Core resistome dominated by multidrug resistance genes was found in all samples, while rare resistome dominated by various resistance genes was more prevalent in plasmids. Specific bacteria were identified as hosts for both core and rare resistomes, with high clinical concern ARGs found in the rare resistome. Particle-associated environment provided the most ideal conditions for resistome hosts. This study provided insights into the genetic locations of ARGs and the community assembly mechanisms of ARG hosts in freshwater environments.
Article
Engineering, Environmental
Yu Zhang, Yongtao He, Linchun Jia, Lei Xu, Zheng Wang, Yueling He, Ling Xiong, Xumeng Lin, Hong Chen, Gang Xue
Summary: By synergizing organic carbon source, thiosulfate, and zero-valent iron, efficient mixotrophic denitrification of oligotrophic secondary effluent can be achieved. Thiosulfate plays a vital role in promoting TN removal efficiency, while corrosion of Fe0 releases OH- to neutralize H+ from thiosulfate-driven denitrification, creating a suitable environment for denitrification. The coordination of thiosulfate and Fe0 maintains the dominance of Thiobacillus for denitrification.
