Article
Environmental Sciences
Boqiang Qin, Jianming Deng, Kun Shi, Jia Wang, Justin Brookes, Jian Zhou, Yunlin Zhang, Guangwei Zhu, Hans W. Paerl, Li Wu
Summary: The study finds that regional climate anomalies exacerbate eutrophication in Lake Taihu by intensifying internal nutrient cycling and aggravating cyanobacterial blooms, resulting in a positive feedback mechanism. These regional effects of climate anomalies are nested within larger-scale global warming predicted to continue in the foreseeable future, contributing to the global expansion of eutrophication and blooms, especially in large, shallow, and eutrophic lakes.
WATER RESOURCES RESEARCH
(2021)
Review
Green & Sustainable Science & Technology
Tilly Alcayna, Isabel Fletcher, Rory Gibb, Leo Tremblay, Sebastian Funk, Bhargavi Rao, Rachel Lowe
Summary: This study reviews the association between climate events and outbreaks of climate-sensitive infectious diseases (CSID) and identifies gaps in knowledge. The findings show higher evidence and agreement for the links between extreme climatic events and water-borne diseases compared to vector-borne diseases. Additionally, there is a substantial lack of evidence on the links between extreme climatic events and underlying vulnerability and exposure factors.
Article
Meteorology & Atmospheric Sciences
O. Moses, R. C. Blamey, C. J. C. Reason
Summary: This study analyzes the characteristics of extreme rainfall events in the ORB and finds that these events contribute -10% to -17% of the rainfall totals. The variability of extreme events is related to ENSO and Botswana High. Important implications for water management, agricultural management, and wildlife conservation in the ORB are found. Overall, the study is rated 8 out of 10 for its importance.
WEATHER AND CLIMATE EXTREMES
(2023)
Article
Engineering, Civil
Alireza Oliaye, Seon-Ho Kim, Deg-Hyo Bae
Summary: This study proposed a novel approach, ANFIS-PSO, to adjust radar rainfall by combining adaptive-network-based fuzzy inference system and particle swarm optimization. Six geographical variables were utilized to adjust the rainfall at three South Korean stations. The adjusted rainfall showed good agreement with Marshall-Palmer-based rainfall and significantly improved the mean absolute percentage error and correlation value. The sensitivity analysis revealed the high sensitivity of adjusted rainfall to elevation and distance from the sea.
JOURNAL OF HYDROLOGY
(2023)
Article
Geosciences, Multidisciplinary
Xiaoke Xu, Anning Huang, Danqing Huang, Yan Zhang, Chunlei Gu, Shuxin Cai, Yong Tang, Zhizhan Zhao, Jingwen Zeng
Summary: Revealing synoptic patterns is crucial for understanding the formation of hourly extreme precipitation (EP). The dominant synoptic patterns associated with summer regional EP events over the central-eastern Tibetan Plateau and Sichuan Basin have been identified. These patterns are characterized by the configuration of the South Asia high and the Western North Pacific Subtropical High, with an additional low-level vortex for the Sichuan Basin. The frequency and intensity of these events have shown a significant increasing trend during 2000-2020.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Energy & Fuels
Antonio Couto, Paula Costa, Teresa Simoes
Summary: Extreme wind events and their driving forces are crucial in integrating wind generation into the power system. Recent research linking extreme wind events with weather circulation patterns has provided insights into the impact on wind power production, with high variability expected under cyclonic regimes and low-generation events most common in anticyclonic regimes.
Article
Environmental Sciences
Xiajing Lin, Guohe Huang, Guoqing Wang, Denghua Yan, Xiong Zhou
Summary: The study indicates that aging dams in the United States are at an increased risk of breach due to intensified rainfall, with Hurricane rainfall having a more severe impact on downstream hydraulic facilities. Future extreme weather events may further exacerbate this situation.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2021)
Review
Meteorology & Atmospheric Sciences
Maurizio Iannuccilli, Giorgio Bartolini, Giulio Betti, Alfonso Crisci, Daniele Grifoni, Bernardo Gozzini, Alessandro Messeri, Marco Morabito, Claudio Tei, Tommaso Torrigiani Malaspina, Roberto Vallorani, Gianni Messeri
Summary: The study investigates the relationship between large-scale atmospheric circulation types and extreme precipitation in Italy, revealing significant increases in extreme precipitation in winter and spring alongside specific circulation types. It emphasizes the importance of considering latitude, orographic exposure, and season in understanding this relationship.
INTERNATIONAL JOURNAL OF CLIMATOLOGY
(2021)
Article
Environmental Sciences
Hyojik Yoon, Hyun-Chul Kim, Sungpyo Kim
Summary: The study investigated the H2O2 concentration and water quality parameters in a large artificial lake near a metropolitan city, finding that the H2O2 concentration in summer was over three times higher than in winter. The lake produced more H2O2 during daylight hours compared to streams, with the lowest production rates in dark conditions. Exposure to external substances, such as heavy metals and antibiotics, increased the generation of H2O2, with antibiotics having a more pronounced effect.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Review
Environmental Sciences
Martin J. Siegert, Mike J. Bentley, Angus Atkinson, Thomas J. Bracegirdle, Peter Convey, Bethan Davies, Rod Downie, Anna E. Hogg, Caroline Holmes, Kevin A. Hughes, Michael P. Meredith, Neil Ross, Jane Rumble, Jeremy Wilkinson
Summary: There is increasing evidence that fossil fuel burning has led to the increased occurrence and severity of extreme environmental events. This study examines evidence for extreme events in Antarctica and the Southern Ocean and highlights the vulnerability of natural Antarctic systems. It predicts that future Antarctic extreme events will be more severe due to further heating and the need for drastic action to reduce greenhouse gas emissions.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)
Article
Geosciences, Multidisciplinary
Fabricio Polifke da Silva, Alfredo Silveira da Silva, Maria Gertrudes Alvarez Justi da Silva, Gisele Dornelles Pires
Summary: This study focused on identifying extreme precipitation events in a city in Brazil and evaluating precipitation forecasts using the WRF model. Findings showed that increasing horizontal resolution improved model performance and better predicted extreme precipitation events.
Article
Geosciences, Multidisciplinary
Jingwen Zeng, Anning Huang, Peili Wu, Danqing Huang, Yan Zhang, Jian Tang, Dajun Zhao, Ben Yang, Shuang Chen
Summary: Based on the analysis of data from 1980 to 2020, this study identifies typical synoptic patterns responsible for extreme hourly precipitation events over the middle and lower Yangtze River basin during summer. The Meiyu front and landfalling typhoons are found to be the main contributors. The occurrence of extreme precipitation events shows a distinct diurnal pattern, with a peak in the morning for the strong Meiyu front pattern and a secondary peak in the late afternoon for the weak Meiyu front pattern.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Multidisciplinary Sciences
Shan Zou, Jilili Abuduwaili, Weili Duan, Jianli Ding, Philippe De Maeyer, Tim Van De Voorde, Long Ma
Summary: The study shows that human activities have significantly augmented extreme precipitation indices in Central Asia, with different regions experiencing varying degrees of non-uniformity changes. The impact of anthropogenic forcing differs among regions, particularly with Eastern Asia showing the most significant increase in non-uniformity of extreme precipitation events.
SCIENTIFIC REPORTS
(2021)
Article
Meteorology & Atmospheric Sciences
Edward J. Zipser, Chuntao Liu
Summary: This paper aims to define different types of extreme storms and their global distribution more clearly. Recent findings suggest that extreme storm events differ depending on specific definitions and approaches, but are starting to converge. The study shows that extreme rain rates and intense convection must be differentiated by size, with large rain areas predominantly in the ocean and small rain areas on land, while the most intense convective cores are almost exclusively over land.
CURRENT CLIMATE CHANGE REPORTS
(2021)
Article
Environmental Sciences
Yawen Wang, Yuchen Wei, Kehang Li, Xiaoting Jiang, Conglu Li, Qianying Yue, Benny Chung-ying Zee, Ka Chun Chong
Summary: The study investigated the short-term associations between extreme temperatures, extreme rainfall, and DF infection risk in South and Southeast Asia. Results showed an increased risk of DF infection within 1-3 weeks after extremely high temperatures, while extreme rainfall was associated with a decreased DF risk.
ENVIRONMENT INTERNATIONAL
(2022)
Article
Engineering, Chemical
Yang Zhang, Siru Zhou, Zhenglei Li, Haoquan Zhang, Meng Zhang, Jun Wang, Lingling Chen, Hongwei Zhang
Summary: This study explored the fate of Pluronic copolymers with different molecular architectures in membrane matrix during casting PSF UF membranes. The results showed that the increment of pore radius in passive solute sieving experiments was positively correlated with the degree of polymerization (DP) of EO segments within the corresponding additive.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Biodiversity Conservation
Ying Chen, Mengguang Han, Xia Yuan, Yanhui Hou, Wenkuan Qin, Huakun Zhou, Xinquan Zhao, Julia A. Klein, Biao Zhu
Summary: In alpine meadow ecosystems on the Qinghai-Tibetan Plateau, surface soil SOC content shows resistance to climate warming, while plant respiration is accelerated. The warming effect on SOC is not correlated with experimental and environmental variables.
GLOBAL CHANGE BIOLOGY
(2022)
Article
Engineering, Chemical
Lingling Chen, Yang Zhang, Renjian Li, Yizhi Xu, Haiou Zhu, Meng Zhang, Hongwei Zhang
Summary: Understanding fouling behaviors and mechanisms is critical for the sustainable application of membrane technology. This study demonstrates a high-resolution large-scale in situ visualization that can rapidly differentiate foulants on/in/over the membrane matrix. It was found that internal adsorption plays a more critical role for dextran-induced fouling on polymeric membranes compared with BSA-induced fouling.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Plant Sciences
Mengguang Han, Ying Chen, Rui Li, Miao Yu, Liangchen Fu, Shuaifeng Li, Jianrong Su, Biao Zhu
Summary: Root phosphatase activity varies significantly among different tree species in forests; there are two leading dimensions in the root economics space, with root phosphatase activity closely related to the root length axis; root phosphatase activity generally decreases with higher root orders.
Review
Environmental Sciences
Zijing Guo, Yang Zhang, Hui Jia, Jiaran Guo, Xia Meng, Jie Wang
Summary: The treatment of landfill leachate using electrochemical methods, particularly electrocoagulation and electrooxidation, has shown promising results in removing various pollutants. This review summarizes the latest research achievements and development trends over the past five years, as well as the challenges faced by electrochemical methods in actual applications.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Chenyuan Dang, Jiawen Wang, Yifan He, Shanqing Yang, Ying Chen, Tang Liu, Jie Fu, Qian Chen, Jinren Ni
Summary: This study investigated the spatiotemporal dynamics and driving mechanisms of planktonic and sedimentary bacterial communities in the Danjiangkou reservoir, the source water reservoir of the world's largest water diversion project. The study found that both environmental heterogeneity and seasonal dynamics significantly influenced the bacterial communities. Rare bacteria played a key role in determining community succession and mediating biogeochemical cycles in the reservoir. The study fills a knowledge gap regarding bacterial community dynamics in source water reservoirs and highlights the importance of rare bacteria in large reservoir ecosystems.
Article
Physics, Nuclear
Dong-Xi Wang, Yan-Lin Ye, Cheng-Jian Lin, Jia-Hao Chen, Kai Ma, Jia-Xing Han, Hui-Ming Jia, Lei Yang, Li-Sheng Yang, Zi-Yao Hu, Ying Chen, Wei-Liang Pu, Gen Li, Zhi-Wei Tan, Hong-Yu Zhu, Tian-Peng Luo, Shan-Hao Zhong, Da-Hu Huang, Jian-Ling Lou, Xiao-Fei Yang, Qi-Te Li, Jin-Yan Xu, Zai-Hong Yang, Kang Wei
Summary: In this experiment, a transfer reaction and cluster-decay were performed to study the resonant states and multiple clustering configurations in 24Mg. The obtained results serve as important validation for theoretical descriptions.
Article
Engineering, Environmental
Yang Zhang, Haoquan Zhang, Lingling Chen, Jie Wang, Jun Wang, Jian Li, Yuan Zhao, Meng Zhang, Hongwei Zhang
Summary: This study presents a novel strategy for fabricating a piezoelectric antifouling polyvinylidene fluoride (PVDF) membrane. The membrane, called Pi-UFM, is self-powered in an ultrafiltration process and shows enhanced antifouling capacity for organic foulants. The key factors behind its antifouling mechanism are electrostatic repulsion and hydration repulsion.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Ecology
Zhen Yang, Xiaoli Shi, Yang Yu, Min Zhang
Summary: The dominant bloom-forming cyanobacterial population in Lake Taihu over the past two decades has been Microcystis. This study conducted an annual investigation of Microcystis colonies, focusing on their size, morphospecies, and viability, from 2020 to 2021, in order to understand the temporal and spatial variation in their characteristics and key environmental factors. The average colony diameter ranged from 81.12 to 499.54 μm across all sites during the investigation. The main dominant morphotypes were Microcystis flos-quae, Microcystis aeruginosa, Microcystis novacekii, and Microcystis wesenbergii, which were primarily influenced by pH, TDP, and temperature. While there was no significant correlation between colony viability and environmental factors, there were notable temporal differences in colony viability, with lower viability observed in autumn, spring, and July.
Article
Plant Sciences
Mengguang Han, Ying Chen, Lijuan Sun, Miao Yu, Rui Li, Shuaifeng Li, Jianrong Su, Biao Zhu
Summary: By using plant trait-based approaches, this study examined the linkages between rhizosphere soil microbial activity and plant resource acquisition strategy in a subtropical evergreen mixed forest. The findings revealed significant correlations between diverse rhizosphere soil microbial activities and plant resource acquisition, indicating species-specific differences.
JOURNAL OF ECOLOGY
(2023)
Article
Soil Science
Ying Chen, Mengguang Han, Xia Yuan, Huakun Zhou, Xinquan Zhao, Joshua P. Schimel, Biao Zhu
Summary: Soils in alpine ecosystems store a large amount of carbon. Long-term warming has been found to lead to significant loss of surface soil carbon (mostly in the mineral-associated heavy fraction) in an alpine shrubland. This loss is likely due to the suppression of the microbial (particularly fungal) pathway to soil carbon formation and/or stimulating the utilization of stable soil carbon (i.e. heavy fraction) by microbes.
SOIL BIOLOGY & BIOCHEMISTRY
(2023)
Article
Multidisciplinary Sciences
Xinyi Cao, Jiuchen Wang, Tianye Zhang, Zhiheng Liu, Lijun Liu, Ying Chen, Zehua Li, Youlu Zhao, Qi Yu, Tong Liu, Jing Nie, Yuanjie Niu, Yupeng Chen, Li Yang, Lirong Zhang
Summary: Renal tubular epithelial cells can respond to varying kidney injuries either adaptively or maladaptively. This study elucidates the chromatin-mediated mechanism underlying the responses of renal tubular epithelial cells to different kidney injuries, and identifies RXR alpha as a therapeutic target for acute kidney injury.
NATURE COMMUNICATIONS
(2022)
Article
Soil Science
Xudong Wang, Jiguang Feng, Gukailin Ao, Wenkuan Qin, Mengguang Han, Yawen Shen, Mengli Liu, Ying Chen, Biao Zhu
Summary: Globally increasing nitrogen deposition is recognized as an important regulator of soil microbial communities. Our meta-analysis of a global dataset revealed that N addition significantly reduced soil bacterial diversity, especially in cropland and with urea addition. However, there was no significant effect on fungal diversity or microbial richness. N addition did shift microbial community structure, likely due to microbial adaptation to N-excess, but had no significant effect on beta-diversity. Soil pH was identified as the most important factor regulating the responses of soil bacterial diversity and richness to N addition.
SOIL BIOLOGY & BIOCHEMISTRY
(2023)
Article
Multidisciplinary Sciences
Wenkuan Qin, Ying Chen, Xudong Wang, Hongyang Zhao, Yanhui Hou, Qiufang Zhang, Xiaowei Guo, Zhenhua Zhang, Biao Zhu
Summary: The structure and function of plant communities in alpine meadow ecosystems are influenced by climate warming, as shown in a field manipulation experiment on the Qinghai-Tibetan Plateau. The experiment revealed that plant species diversity, biomass, and net primary productivity generally resisted warming, but plant community composition gradually changed. Legumes' biomass significantly decreased by 45%, while forbs' biomass increased by 84% due to favorable growth conditions. Overall, short-term warming can affect plant community composition by altering interspecific competition and survival strategies, leading to changes in plant productivity and carbon dynamics in alpine meadow ecosystems.
FUNDAMENTAL RESEARCH
(2023)
Article
Meteorology & Atmospheric Sciences
Suding Yang, Xin Li, Limin Zeng, Xuena Yu, Ying Liu, Sihua Lu, Xiaofeng Huang, Dongmei Zhang, Haibin Xu, Shuchen Lin, Hefan Liu, Miao Feng, Danlin Song, Qinwen Tan, Jinhui Cui, Lifan Wang, Ying Chen, Wenjie Wang, Haijiong Sun, Mengdi Song, Liuwei Kong, Yi Liu, Linhui Wei, Xianwu Zhu, Yuanhang Zhang
Summary: In this study, a multi-channel whole-air sampling equipment was developed and deployed on an unmanned aerial vehicle (UAV) platform to continuously observe volatile organic compounds (VOCs) in the planetary boundary layer (PBL). The equipment includes a solenoid valve and lightweight quartz sampling canisters with minimal adsorption loss and good reproducibility. The UAV platform also integrates online instruments for measuring O3, NO2, CO, SO2, and meteorological parameters. By using this newly developed UAV system, vertical profiles of VOCs and trace gases during the evolution of the PBL in south-western China were successfully obtained.
ATMOSPHERIC MEASUREMENT TECHNIQUES
(2023)
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.
