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
Environmental Sciences
Warish Ahmed, Simon Toze, Cameron Veal, Paul Fisher, Qian Zhang, Zhigang Zhu, Christopher Staley, Michael J. Sadowsky
Summary: This study investigated the decay of enteric pathogens and contaminants in freshwater using laboratory microcosms. It was found that culturable Escherichia coli and the HF183 marker gene decayed faster than qPCR-measured pathogens, indicating potential limitations in using E. coli or HF183 as indicators for pathogen presence. Additionally, temperature was shown to have a significant impact on the decay rates of microorganisms, with slower decay observed in winter compared to summer.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Feng Han, Zhaoping Hu, Nengwang Chen, Yao Wang, Jiping Jiang, Yi Zheng
Summary: This study proposed a novel method, Bayesian calibration using multisource observations (BCMSO), to incorporate in-situ sensor data in watershed water quality modeling. The results showed that direct assimilation of sensor data using traditional Bayesian calibration could lead to significant parameter inference deviations and model simulation biases, but the BCMSO method could extract meaningful information from sensor data and reduce modeling uncertainty after proper treatment of errors in sensor data.
WATER RESOURCES RESEARCH
(2023)
Article
Engineering, Environmental
Naveen Joseph, Jane Lucas, Nikhil Viswanath, Reed Findlay, Jim Sprinkle, Michael S. Strickland, Eric Winford, Alan S. Kolok
Summary: The United States National Forests are multi-use lands that support human recreation and cattle grazing. Fecal contamination in the Mink Creek watershed is found to be caused by human activities and unknown sources.
Article
Microbiology
Ulzee An, Liat Shenhav, Christine A. Olson, Elaine Y. Hsiao, Eran Halperin, Sriram Sankararaman
Summary: Microbial source tracking analysis is a widely used technique for characterizing complex microbial communities, but it is currently limited to specific study environments. In order to explore multiple source environments using large databases, a source selection procedure is needed. STENSL is a machine learning method that extends microbial source tracking analysis by performing unsupervised source selection and enabling sparse identification of latent source environments.
Article
Environmental Sciences
Matthew T. Price, Angelia D. Blackwood, Rachel T. Noble
Summary: This study examined the impact of tidal inundation on stormwater discharge, demonstrating that tidal phase and E. coli concentration are significant factors affecting Enterococcus sp. concentrations in water samples. The research emphasized the need to include tidal parameters in future water quality monitoring programs.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Mehedi Hasan Tarek, Jason Hubbart, Emily Garner
Summary: In this study, molecular techniques were used to track the sources of fecal contamination in a mixed land-use watershed in the Appalachian Mountains. Results showed that human-related sources were primarily found in developed areas, indicating that septic or sewer failure is a major source of fecal input. Additionally, it was found that acid mine drainage may contribute to the inactivation or loss of culturability in E. coli. Identifying fecal contamination sources and understanding the impact of in-stream physiochemistry can help develop sustainable watershed management plans to protect water sources.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Biotechnology & Applied Microbiology
R. B. Linke, G. Kebede, D. Mushi, A. Lakew, D. S. Hayes, W. Graf, A. H. Farnleitner
Summary: This study tested genetic microbial source tracking methods for identifying ruminant- and human-associated bacterial faecal contaminants in Ethiopia, and found that all tested assays are suitable candidates for diverse MST applications in the Ethiopian area. The markers showed large differences in abundance between target and non-target faecal samples, and were absent in pristine soil.
LETTERS IN APPLIED MICROBIOLOGY
(2021)
Article
Environmental Sciences
Goraw Goshu, A. A. Koelmans, J. J. M. de Klein
Summary: The study assessed the adequacy of faecal indicator bacteria in the high-altitude, tropical country of Ethiopia and found that Escherichia coli and Clostridium perfringens are effective indicators for faecal contamination monitoring. Most of the sub-basins of Lake Tana were found to be polluted to varying degrees, with markers associated with ruminants being widely detected.
ENVIRONMENTAL POLLUTION
(2021)
Article
Environmental Sciences
Daniel Gerrity, Katerina Papp, Eric Dickenson, Meena Ejjada, Erica Marti, Oscar Quinones, Mayra Sarria, Kyle Thompson, Rebecca A. Trenholm
Summary: Unsheltered homelessness is a critical issue in many cities worldwide and can have implications for urban water quality. This study used diverse source tracking tools to evaluate the contribution of direct human inputs, including those from unsheltered homelessness, to Las Vegas' tributary washes. The findings highlight the importance of protecting water quality and environmental health, and may lead to strategies for addressing homelessness and allocating resources.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Multidisciplinary
A. A. Abedi, M. R. Mosavi
Summary: This paper discusses two methods for navigation satellite signal tracking: Scalar Tracking Loop (STL) and Vector Tracking Loop (VTL). The VTL method, although computationally intensive, can be implemented on low-cost receivers by using three proposed techniques that significantly reduce the computational load. This improves the performance of the GNSS receiver.
Article
Engineering, Electrical & Electronic
Chenglong Li, Emmeric Tanghe, Luc Martens, Jac Romme, Gaurav Singh, Eli De Poorter, Wout Joseph
Summary: This article proposes a variance-based temporary-spatial (VATS) mapping algorithm for fine-grained passive tracking of low-cost UWB devices. A particle filter algorithm is used to track position likelihood changes. Experimental results show promising performance for practical applications.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2022)
Article
Robotics
Walid Remmas, Ahmed Chemori, Maarja Kruusmaa
Summary: The study utilized data fusion of visual and acoustic signals measured by low-cost sensors to track a diver with an autonomous underwater vehicle. Real-time experiments validated the advantages of this tracking method in improving underwater target tracking.
JOURNAL OF FIELD ROBOTICS
(2021)
Article
Agriculture, Multidisciplinary
Hugo de Moura Campos, Henrique Fonseca E. de Oliveira, Marcio Mesquita, Lucas Eduardo Vieira de Castro, Rhuanito Soranz Ferrarezi
Summary: This study developed a low-cost open-source irrigation system by connecting a prototyping platform to soil moisture sensors, allowing for on-demand water supply based on real-time monitoring of soil water content. The system significantly improved water use efficiency, making irrigation more precise and effective.
COMPUTERS AND ELECTRONICS IN AGRICULTURE
(2021)
Article
Microbiology
Silvia Monteiro, Gaspar Queiroz, Filipa Ferreira, Ricardo Santos
Summary: The study reveals that urban stormwater runoff is heavily impacted by fecal contamination, not only from domestic animals but possibly also from humans, posing a high risk to human health and the environment before passing through the drainage system.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Ecology
Lesley A. Ogilvie, Jonathan Nzakizwanayo, Fergus M. Guppy, Cinzia Dedi, David Diston, Huw Taylor, James Ebdon, Brian V. Jones
Article
Engineering, Environmental
Rene E. Mayer, Georg H. Reischer, Simone K. Ixenmaier, Julia Derx, Alfred Paul Blaschke, James E. Ebdon, Rita Linke, Lukas Egle, Warish Ahmed, Anicet R. Blanch, Denis Byamukama, Marion Savill, Douglas Mushi, Hector A. Cristobal, Thomas A. Edge, Margit A. Schade, Asli Aslan, Yolanda M. Brooks, Regina Sommer, Yoshifumi Masago, Maria I. Sato, Huw D. Taylor, Joan B. Rose, Stefan Wuertz, Orin C. Shanks, Harald Piringer, Robert L. Mach, Domenico Savio, Matthias Zessner, Andreas H. Farnleitner
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2018)
Article
Biotechnology & Applied Microbiology
S. E. Purnell, J. E. Ebdon, H. Wilkins, H. D. Taylor
JOURNAL OF APPLIED MICROBIOLOGY
(2018)
Article
Engineering, Environmental
Edgard Dias, James Ebdon, Huw Taylor
Article
Multidisciplinary Sciences
Diogo Trajano Gomes da Silva, Edgard Dias, James Ebdon, Huw Taylor
Article
Environmental Sciences
Diogo Trajano Gomes da Silva, Kevin Ives, Jean-Francois Fesselet, James Ebdon, Huw Taylor
Article
Public, Environmental & Occupational Health
Mario Rodrigues Peres, James Ebdon, Sarah Purnell, Huw Taylor
INTERNATIONAL JOURNAL OF HYGIENE AND ENVIRONMENTAL HEALTH
(2020)
Article
Multidisciplinary Sciences
Annie Ockelford, Andy Cundy, James E. Ebdon
SCIENTIFIC REPORTS
(2020)
Article
Environmental Sciences
Sarah Purnell, Andrew Halliday, Freya Newman, Christine Sinclair, James Ebdon
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Public, Environmental & Occupational Health
Diogo Trajano Gomes da Silva, James Ebdon, Joseph Okotto-Okotto, Frederick Ade, Oscar Mito, Peggy Wanza, Emmah Kwoba, Thumbi Mwangi, Weiyu Yu, Jim A. Wright
INTERNATIONAL JOURNAL OF HYGIENE AND ENVIRONMENTAL HEALTH
(2020)
Article
Microbiology
Mohammad A. Tariq, Fiona Newberry, Rik Haagmans, Catherine Booth, Tom Wileman, Lesley Hoyles, Martha R. J. Clokie, James Ebdon, Simon R. Carding
FRONTIERS IN MICROBIOLOGY
(2020)
Article
Engineering, Environmental
Karolina Skalska, Annie Ockelford, James E. Ebdon, Andrew B. Cundy
JOURNAL OF WATER PROCESS ENGINEERING
(2020)
Article
Environmental Sciences
S. Monteiro, J. Ebdon, R. Santos, H. Taylor
Summary: This study investigated the sources of fecal contamination in a water body in Portugal, revealing that contamination originates from both human and various agricultural animal sources. The study found correlations between fecal indicators, animal mtDNA markers, and season, with animal mtDNA levels being related to temperature and UV radiation. This evaluation of a source-associated 'toolbox' provides valuable information for future surveillance and remediation strategies to improve water quality.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Microbiology
Renuka Kapoor, James Ebdon, Ashutosh Wadhwa, Goutam Chowdhury, Yuke Wang, Suraja J. Raj, Casey Siesel, Sarah E. Durry, Wolfgang Mairinger, Asish K. Mukhopadhyay, Suman Kanungo, Shanta Dutta, Christine L. Moe
Summary: This study evaluated the application of different phages as microbial source tracking methods and found that GB-124 and SOMCPH can serve as low-cost fecal indicator tools in Kolkata, India, facilitating environmental surveillance and research on fecal exposure pathways.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Environmental Sciences
Edgard Dias, James Ebdon, Huw Taylor
MICROBIAL RISK ANALYSIS
(2019)
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.