Article
Environmental Sciences
Gizem Sanliturk, Mumtaz Guran
Summary: The study found that the counts of aerobic mesophilic bacteria on beaches in Northern Cyprus significantly increased from winter to summer, while the detection frequencies of bacteria were notably higher in summer compared to winter, especially for Escherichia coli. The highest resistance percentages were detected against beta-lactam and lincosamides group of antibiotics.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH
(2022)
Article
Environmental Sciences
J. Brandao, J. P. Gangneux, S. Arikan-Akdagli, A. Barac, A. C. Bostanaru, S. Brito, M. Bull, N. Cerikcioglu, B. Chapman, M. A. Efstratiou, C. Ergin, M. Frenkel, A. Gitto, C. Goncalves, H. Guegan, N. Gunde-Cimerman, M. Guran, L. Irinyi, E. Jonikaite, M. Katarzyte, L. Klingspor, M. Mares, W. G. Meijer, W. J. G. Melchers, J. Meletiadis, W. Meyer, V Nastasa, M. Novak Babic, D. Ogunc, B. Ozhak, A. Prigitano, S. Ranque, R. O. Rusu, R. Sabino, A. Sampaio, S. Silva, J. H. Stephens, M. Tehupeiory-Kooreman, A. M. Tortorano, A. Velegraki, C. Verissimo, G. C. Wunderlich, E. Segal
Summary: The study focuses on sand contaminants and water pollution, revealing Aspergillus spp., Candida spp., Fusarium spp. and Cryptococcus spp. as the most common fungi in sand and water. The results suggest that beaches need to be regularly monitored for fungi to ensure safety and improve management.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Nathan L. R. Williams, Nachshon Siboni, Sandra L. McLellan, Jaimie Potts, Peter Scanes, Colin Johnson, Melanie James, Vanessa McCann, Justin R. Seymour
Summary: Anthropogenic waste streams can be a significant source of antibiotic resistant microbes in the environment, posing a potential risk to public health. A study conducted at a popular swimming beach in Australia found that following significant rainfall, levels of faecal indicator bacteria and antibiotic resistance genes (ARGs) increased significantly, indicating an elevated human health risk. The study also identified stormwater drains as the main points of ARG input, and observed positive correlations between ARGs and certain stormwater drain indicator taxa, including human pathogens.
ENVIRONMENTAL POLLUTION
(2022)
Article
Microbiology
Michael Frenkel, Hanan Serhan, Shlomo E. Blum, Marcelo Fleker, Edward Sionov, Sharon Amit, Zeela Gazit, Shiraz Gefen-Halevi, Esther Segal
Summary: This study aimed to investigate the presence of fungi that may affect human health on the beaches of the Israeli Mediterranean Sea coast. The results revealed the presence of various fungi on the beaches, some of which pose risks to human health. Therefore, monitoring fungi on the beaches is essential for ensuring public health and safety.
Article
Biochemistry & Molecular Biology
Viktoria Rungelrath, Frank R. DeLeo
Summary: Staphylococcus aureus is a major cause of bacterial infections worldwide, with resistance to antibiotics and the ability to evade host defenses. Research has identified certain virulence molecules of S. aureus as therapeutic targets. Treatment options for methicillin-resistant S. aureus are limited, highlighting the need for further research to develop new therapies.
ANTIOXIDANTS & REDOX SIGNALING
(2021)
Review
Microbiology
Vanessa Silva, Sara Araujo, Andreia Monteiro, Jose Eira, Jose Eduardo Pereira, Luis Maltez, Gilberto Igrejas, Teresa Semedo Lemsaddek, Patricia Poeta
Summary: Animal production involves the use of antimicrobial agents to promote growth and treat diseases, but it also leads to the emergence of antibiotic-resistant strains such as methicillin-resistant Staphylococcus aureus (MRSA). MRSA poses a significant threat to public health and animal welfare. Livestock-associated MRSA (LA-MRSA) was initially restricted to a specific clonal complex (CC398), but its diversity has increased over time, accompanied by multidrug resistance. This review summarizes the main clonal lineages of MRSA associated with different animals, including swine, cattle, rabbits, and poultry, and highlights the multidrug resistance patterns.
Review
Infectious Diseases
Joshua. B. Parsons, Annette. C. Westgeest, Brian. P. B. Conlon, Vance. G. Fowler
Summary: Methicillin-resistant Staphylococcus aureus (MRSA) is a deadly pathogen that can persist in the bloodstream for days despite appropriate antibiotics. Persistent MRSA bacteremia is common and associated with poor clinical outcomes. This review explores the factors related to host-pathogen interaction and discusses the clinical relevance of each element. Treatment options and diagnostic approaches for managing persistent MRSA bacteremia are also discussed.
Article
Public, Environmental & Occupational Health
Sara Quero, Marina Serras-Pujol, Noemi Parraga-Nino, Carmen Torres, Marian Navarro, Anna Vilamala, Emma Puigoriol, Javier Diez de los Rios, Elisenda Arque, Judit Serra-Pladevall, Alba Romero, Daniel Molina, Roger Paredes, Maria Luisa Pedro-Botet, Esteban Reynaga
Summary: This study investigated the prevalence of methicillin-susceptible S. aureus (MSSA) and methicillin-resistant S. aureus (MRSA) among workers in the pork production chain. The results showed that the prevalence of MRSA was high among workers in contact with live animals, especially in pig farms, livestock transporters, and slaughterhouses.
Article
Biotechnology & Applied Microbiology
Javier Gallard-Gongora, Aldo Lobos, James W. Conrad, Jayme Peraud, Valerie J. Harwood
Summary: Among the three methods for extracting bacterial DNA from beach sand, the slurry method showed the best analytical sensitivity and better reflected spatial variability of Enterococcus in individual samples. Additionally, the method had high recovery efficiency.
JOURNAL OF APPLIED MICROBIOLOGY
(2022)
Article
Multidisciplinary Sciences
Yoshihiro Suzuki, Hiroki Shimizu, Takahiro Kuroda, Yusuke Takada, Kei Nukazawa
Summary: Although there are guidelines for managing bacterial pollution in coastal waters on recreational sandy beaches, the impact of bacterial pollution from terrestrial plant debris on beaches has not been adequately assessed. This study found that the level of fecal-indicator bacteria in plant debris on Kizaki Beach in Japan was significantly higher than in the sand. Removal of plant debris can help create safer beaches.
SCIENTIFIC REPORTS
(2021)
Article
Immunology
Zhaotao Li, Pavani Beesetty, George Gerges, Maureen Kleinhenz, Melissa Moore-Clingenpeel, Ching Yang, Luul B. Ahmed, Josey Hensley, Lisa Steele, Anita S. Chong, Christopher P. Montgomery
Summary: The study found that S. aureus-specific antibody levels and T-cell responses increase with age, indicating a coordinated development of anti-staphylococcal immunity. Young infected children had higher levels of certain antibodies compared to healthy children, but these differences disappeared with age. Both global and S. aureus-specific T-cell function were impaired in children with invasive and noninvasive infections.
JOURNAL OF INFECTIOUS DISEASES
(2022)
Review
Multidisciplinary Sciences
Kirsten A. Berry, Mackenzie T. A. Verhoef, Allison C. Leonard, Georgina Cox
Summary: Staphylococcus aureus is a pathobiont capable of colonizing and infecting most tissues within the human body, relying on a complex and diverse arsenal of adhesins. Therapeutics targeting the S. aureus host-pathogen interaction remain understudied, and alternative approaches are crucial due to the increasing global threat of antimicrobial resistance. Developing antivirulence agents to neutralize virulence factors could reduce bacterial pathogenicity and the burden of S. aureus infections.
ANNALS OF THE NEW YORK ACADEMY OF SCIENCES
(2022)
Article
Biochemistry & Molecular Biology
Mark Hutchins, Richard A. Bovill, Peter J. Stephens, John A. Brazier, Helen M. I. Osborn
Summary: The increasing number of antibiotic-resistant bacteria poses a serious threat to global human health. This study examines the glycosylation of nadifloxacin to improve its solubility and finds that one glycoside derivative has the potential to be an effective antibacterial agent.
Article
Microbiology
N. Effelsberg, M. Stegger, L. Peitzmann, O. Altinok, G. W. Coombs, B. Pichon, A. Kearns, P. R. Randad, C. D. Heaney, S. Bletz, F. Schaumburg, A. Mellmann
Summary: Staphylococcus aureus ST45 is a major global MRSA lineage with significant strain diversity and clinical impact. A study analyzing a large collection of 451 diverse ST45 isolates from 6 continents and 26 countries found two distinct sublineages correlated with geographical origins, with Bayesian analysis predicting an origin in northwestern Europe around 500 years ago. Multiple acquisitions of virulence factors were observed throughout the evolution of the ST45 lineage.
JOURNAL OF CLINICAL MICROBIOLOGY
(2021)
Article
Infectious Diseases
Emily M. Meredith, Lauren T. Harven, Andrew D. Berti
Summary: This study compared the effects of different mechanisms of tolerance induction on the effectiveness of antibiotics against Staphylococcus aureus. It was found that each mechanism of tolerance rendered at least one antibiotic ineffective, and each antibiotic was rendered ineffective by at least one mechanism of tolerance. Further research is needed to evaluate additional antibiotics, combination therapy, and different tolerance inducers.
Article
Biochemical Research Methods
Chad Crain, Keith Kezer, Syreeta Steele, Judith Owiti, Sphoorthy Rao, Maria Victorio, Brett Austin, Alon Volner, William Draper, John Griffith, Joshua Steeled, Marva Seifert
Summary: In this study, droplet digital polymerase chain reaction (ddPCR) was found to closely align with Enterolert MPN results for identifying fecal indicator bacteria (FIB) exceedance levels in coastal waters of San Diego, CA. The study showed a strong relationship between ddPCR and traditional methods, such as qPCR and Enterolert, with acceptable levels of agreement. Additionally, an advisory threshold of 1413 DNA copy number/100 mL for ddPCR was empirically determined to be equivalent to the California Enterolert beach action threshold of 104 MPN/100 mL.
JOURNAL OF MICROBIOLOGICAL METHODS
(2021)
Article
Biochemistry & Molecular Biology
Zachary Gold, Emily E. Curd, Kelly D. Goodwin, Emma S. Choi, Benjamin W. Frable, Andrew R. Thompson, Harold J. Walker, Ronald S. Burton, Dovi Kacev, Lucas D. Martz, Paul H. Barber
Summary: This study evaluates the performance of DNA metabarcoding in classifying fish species in the California Current Large Marine Ecosystem. It shows that a regional database provides higher accuracy than a global one, and highlights the tradeoff between accuracy and misclassification when setting taxonomic cutoff scores. Additionally, adding new reference sequences improves the identification of native species in environmental DNA samples, emphasizing the importance of curated reference databases for effective metabarcoding.
MOLECULAR ECOLOGY RESOURCES
(2021)
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
Engineering, Environmental
Sooyeol Kim, Lauren C. Kennedy, Marlene K. Wolfe, Craig S. Criddle, Dorothea H. Duong, Aaron Topol, Bradley J. White, Rose S. Kantor, Kara L. Nelson, Joshua A. Steele, Kylie Langlois, John F. Griffith, Amity G. Zimmer-Faust, Sandra L. McLellan, Melissa K. Schussman, Michelle Ammerman, Krista R. Wigginton, Kevin M. Bakker, Alexandria B. Boehm
Summary: Wastewater-based epidemiology is a supplementary method for detecting SARS-CoV-2 RNA in wastewater. The study found that the solid fraction of wastewater has higher concentrations of SARS-CoV-2 RNA compared to the liquid fraction. The RNA concentrations in both settled solids and influent were correlated to COVID-19 incidence rates in the sewersheds.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Colleen E. Yancey, Derek J. Smith, Paul A. Den Uyl, Osama G. Mohamed, Fengan Yu, Steven A. Ruberg, Justin D. Chaffin, Kelly D. Goodwin, Ashootosh Tripathi, David H. Sherman, Gregory J. Dick
Summary: This study characterizes the variant composition of mcy genes in Microcystis blooms and reveals the dynamic shifts in their abundance and expression. The results show that natural Microcystis populations contain several cooccurring mcy genotypes that likely influence the production of microcystin congeners.
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Amity G. Zimmer-Faust, John F. Griffith, Joshua A. Steele, Laralyn Asato, Tania Chiem, Samuel Choi, Arturo Diaz, Joe Guzman, Michele Padilla, Jennipher Quach-Cu, Victor Ruiz, Bryan Santos, Mary Woo, Stephen B. Weisberg
Summary: The performance of six laboratories in processing samples spiked with coliphage in recreational water was evaluated. The results showed that laboratory performance is not a hindrance to the adoption of coliphage as a new indicator for assessing recreational health risk. Most laboratories met the method-defined recovery requirements, and failures were mainly observed in less-experienced laboratories on the initial samples processed.
JOURNAL OF APPLIED MICROBIOLOGY
(2022)
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
Multidisciplinary Sciences
Chase C. James, Andrew D. Barton, Lisa Zeigler Allen, Robert H. Lampe, Ariel Rabines, Anne Schulberg, Hong Zheng, Ralf Goericke, Kelly D. Goodwin, Andrew E. Allen
Summary: This study examines the ecological and oceanographic processes that drive the response of pelagic ocean microbiomes to environmental changes in coastal upwelling ecosystems. The authors find that nitracline depth is a robust predictor of spatial microbial community structure and biodiversity in the Southern California Current region. Furthermore, they observe striking ecological changes associated with the transition from warm anomaly to cooler upwelling conditions. The study highlights the importance of nutrient supply in explaining marine microbial community structure and diversity.
NATURE COMMUNICATIONS
(2022)
Article
Biotechnology & Applied Microbiology
Shen Jean Lim, Luke R. Thompson, Craig M. Young, Terry Gaasterland, Kelly D. Goodwin
Summary: Methane hydrates are significant natural gas reserves with implications for global carbon cycling and climate change. This study provides the first analysis of metagenomes associated with the methane ice worm, a polychaete species that colonizes methane hydrates. The study reveals the metabolic capabilities and microbial community composition of this elusive marine polychaete.
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(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)
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
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
Oceanography
Francisco P. Chavez, Markus Min, Kathleen Ritz, Nathan Truelove, Jacoby Baker, Diana LaScala-Grunewald, Marguerite Blum, Kristine Walz, Charles Nye, Anni Djurhuus, Robert J. Miller, Kelly D. Goodwin, Frank E. Muller-Karger, Henry A. Ruhl, Christopher A. Scholin
Summary: The use of environmental DNA (eDNA) has the potential to disrupt traditional methods in studying marine ecology and biodiversity, providing a wide range of information to improve conservation and management practices. Ultimately, this can lead to a better understanding of global marine biodiversity and contribute to more effective management and sustainable use of the world ocean.
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.