Article
Engineering, Chemical
Bilal Aftab, Jinwoo Cho, Jin Hur
Summary: The study proposed an integrated approach of UV/H2O2 oxidation with FO system to track the changes of organic composition in landfill leachate, pinpoint the organic fractions causing FO membrane fouling, and evaluate their removal efficiency. The integrated system showed improved filtered volume, reduced membrane resistance, complete flux recovery after physical cleaning, and decreased organic carbon in the membrane concentrate.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Environmental Sciences
Homin Kye, Kiho Kim, Youmi Jung, Yirga Weldu Abrha, Seong-Nam Nam, Il-hwan Choi, Joon-Wun Kang, Yeojoon Yoon
Summary: The characteristics of marine dissolved organic matter vary spatially and seasonally, affecting oxidation processes, especially ozonation. Characterizing marine dissolved organic matter can help improve the effectiveness of oxidation processes.
Article
Environmental Sciences
Zeshan Arshad, Tahir Maqbool, Kyung Hoon Shin, Seung-Hee Kim, Jin Hur
Summary: The study used stable isotope-labeled soluble microbial products and substrates to investigate their assimilation in the formation of new biological products in activated sludge processes. It was found that humic-like substances were present in the non-consumable portion of SMP, and EPS formation mainly resulted from the humic-like components in SMP.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
M. D. Perez-Murcia, E. Martinez-Sabater, M. A. Domene, A. Gonzalez-Cespedes, M. A. Bustamante, F. C. Marhuenda-Egea, X. Barber, D. B. Lopez-Lluch, R. Moral
Summary: The study found that the degradation of peptides and proteins during composting can affect the biodegradation of remaining organic matter, while thermogravimetric analysis revealed that more recalcitrant compounds become predominant as the composting process progresses.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Environmental Sciences
Dongxu Zhang, Xiaoyu Chen, Guangjun Fu, Zhou Yang, Jia Song, Xiaogang Tong
Summary: The chemistry of dissolved organic matter (DOM) in soil plays a crucial role in soil nutrient cycling and vegetation restoration. This study found that as the vegetation restoration progressed, the concentration of DOM increased in the soil. The composition and properties of DOM were influenced by dissolved organic carbon in arbor forest, while dissolved organic nitrogen mainly affected DOM in shrubland.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Agricultural Engineering
Liheng Ren, Binghua Yan, Mukesh Kumar Awasthi, Jiachao Zhang, Hongli Huang, Lihua Zhang, Lin Luo
Summary: The research found that adding distillers' grains can increase microbial activity, promoting organic matter degradation and nitrogen conservation, while significantly altering microbial community structures. Nitrate, water soluble carbon, organic matter, and ammonium are key factors influencing microbial community changes in different treatments.
BIORESOURCE TECHNOLOGY
(2021)
Article
Environmental Sciences
Wanting Xiao, Guoren Xu, Guibai Li
Summary: The study investigated the influence of nanobubble aeration on microbial aggregates, specifically activated sludge and biofilm, and found that it improved total nitrogen removal and enhanced the structure of microbial aggregates. The application of nanobubble also shifted the composition of functional substances in microbial aggregates and changed the morphology of biofilm. Additionally, it optimized the distribution of functional microorganisms and their metabolism pathways.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
XiuLin Huang, ShiLin An, Shuo Chen, JiaRu Dai, JingJing Liu, ShuaiLong Wen, TingZhen Li, Peng Xing, YingXun Du
Summary: This study investigated the transformation mechanism of algal-dissolved organic matter (ADOM) in natural water. The results showed that the photochemical and microbial processes had different effects on ADOM transformation, with the photochemical process causing more significant changes in certain optical parameters, and the microbial process being more effective in the degradation of DOC and CDOM.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Tan He, Yang Wu, Dian Wang, Jing Cai, Jianzhong Song, Zhiqiang Yu, Xiangying Zeng, Ping 'an Peng
Summary: This study investigated the seasonal variations of the optical and molecular properties of water-soluble BrC in Guangzhou and identified the key factors affecting its light absorption and fluorescence properties. It was found that water-soluble BrC had a stronger light absorption capacity in winter and the dominant fluorophores were humic-like components. The aromaticity and N-containing species were found to be the most important chromophores affecting the light absorption of water-soluble BrC.
ATMOSPHERIC ENVIRONMENT
(2023)
Article
Environmental Sciences
Xingjun Fan, Feng Cai, Cuncun Xu, Xufang Yu, Yan Wang, Xin Xiao, Wenchao Ji, Tao Cao, Jianzhong Song, Ping'an Peng
Summary: This study investigated the MW-dependent characteristics of WSOM and found that different MW fractions of WSOM exhibited distinct chemical properties and compositions, with variations in the distribution ratios of organic carbon and light-absorbing chromophores. The findings provide valuable insights into the complexity and heterogeneity of WSOM, enhancing the understanding of its chemical properties and structures.
ATMOSPHERIC ENVIRONMENT
(2021)
Article
Biochemical Research Methods
Javad Ghorbani, Mohsen Kompany-Zareh, Elham Tahmasebi
Summary: In this study, antibodies like Immunoglobulin G were purified from human plasma using simple precipitation and weak anion exchange chromatography techniques. The chromatographic fractions were analyzed using Multivariate Curve Resolution-Alternating Least Squares (MCR-ALS) and Parallel Factor Analysis (PARAFAC) to provide information about the existing protein and non-protein components in each fraction. The results demonstrated the importance of multivariate analysis and complementary information for better interpretation of such biochemically complex systems.
JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES
(2021)
Article
Green & Sustainable Science & Technology
Hailiang Li, Yang Yang, M. James C. Crabbe, Haikui Chen
Summary: This study aimed to investigate the relationship between DOM component characteristics and microbial community structure in the soil of Larix principis-rupprechtii Mayr. plantations. The results showed that stand age and growth season significantly affected the contents of soil PLFA biomarkers and the quality and components of soil DOM. The study also found that changes in soil DOM quality and components driven by growth season and stand age were the major drivers of variations in the soil microbial community structure.
Article
Multidisciplinary Sciences
Xiaojia Chen, Chengjian Wu, Xiang Li, Chenyang Wang, Qinyu Li, Peng Zhou, Dong Wei, Jiping Shi, Zhijun Zhao
Summary: Thermophilic fermentation with Geobacillus toebii GT-02 can promote the maturity of bean dregs. GT-02 can increase the total organic carbon and dry matter loss of bean dregs, enhance microbial number, and affect the composition of microbial community.
SCIENTIFIC REPORTS
(2021)
Article
Engineering, Environmental
Inalmar D. Barbosa Segundo, Ana Gomes, Bianca M. Souza-Chaves, Minkyu Park, Andre B. dos Santos, Rui A. R. Boaventura, Francisca C. Moreira, Tania F. C. Silva, Vitor J. P. Vilar
Summary: This study evaluates the feasibility of incorporating ozone (O-3)-based advanced oxidation processes (AOPs) as an intermediate step in a multistage treatment system for non-biodegradable sulphur-rich leachate from a hazardous industrial solid waste landfill. Various O-3-driven processes were applied to the leachate after removal of sulphur compounds, resulting in a treatment train that transformed highly recalcitrant wastewater into effluent in full compliance with regulations. The effectiveness of the O-3/H2O2 process on dissolved organic matter transformation was confirmed through fluorescence excitation-emission matrix and size exclusion chromatography analysis.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Geography, Physical
Laura Sibylla Endres, Celine Jacquin, Saul Gonzalez-Lemos, Laura Rodriguez-Rodriguez, Jakub Sliwinski, Nikita Kaushal, Oliver Kost, Heather Marie Stoll
Summary: The origin and formation mechanism of fluorescent layers in stalagmites are not well understood. This study conducted a year-long monthly monitoring of drip water fluorescence in La Vallina Cave and compared the results to drip water chemistry and active speleothems. The findings challenge previous views and suggest additional controls on drip water fluorescence, such as bedrock interaction and microbial reprocessing.
QUATERNARY RESEARCH
(2023)
Review
Environmental Sciences
Quang Viet Ly, Tahir Maqbool, Zhenghua Zhang, Quyet Van Le, Xiaochan An, Yunxia Hu, Jinwoo Cho, Jianxin Li, Jin Hur
Summary: Nanomaterials have attracted significant attention as emerging adsorbents for environmental applications and their interactions with aquatic dissolved organic matter are important to study. However, a comprehensive understanding of DOM-NM complexes is still lacking and further characterization of DOM properties is needed to deepen our understanding of adsorption processes on NMs.
Article
Environmental Sciences
Tahir Maqbool, Chengyue Li, Yanling Qin, Jiaxing Zhang, Muhammad Bilal Asif, Zhenghua Zhang
Summary: This study reveals the seasonal and location-dependent dynamics of dissolved organic matter (DOM) in tap water and source water of a metropolitan city. Significant changes in fluorescent DOM (FDOM) composition were observed between wet and dry seasons. Optimizing operational conditions of drinking water treatment plants is crucial after considering seasonal changes and source water characteristics.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Jiaxing Zhang, Tahir Maqbool, Yu Qiu, Yanling Qin, Muhammad Bilal Asif, Chao Chen, Zhenghua Zhang
Summary: The study investigated the presence of carcinogenic N-nitrosamines and dissolved organic matter (DOM) in four reservoirs in a southern Chinese city. It found that industrial and pharmaceutical-origin precursors dominated the N-nitrosamines distribution, with traces of pesticide-based precursors also present. The distribution of N-nitrosamines varied among the reservoirs, with certain compounds found abundantly in all reservoirs. Additionally, anthropogenic activities were identified as the primary source of DOM and N-nitrosamines in the city based on land-use analysis.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Tahir Maqbool, Jiaxing Zhang, Yanling Qin, Muhammad Bilal Asif, Quang Viet Ly, Zhenghua Zhang
Summary: This study investigated the impacts of seasonal variations on chlorine consumption and DOM composition, finding a direct relationship between chlorine consumption and N-Nitrosodimethylamine, with elevated consumption in the wet season and dominance of humic-like components. Fluorescence moieties related to humic substances acted as a surrogate for chlorine consumption, and single fluorescence peaks showed potential for on-line monitoring and portable purposes. This field-based study demonstrated the application of fluorescence spectroscopy in designing chlorine dose for optimal residual chlorine at consumer's tap.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Iqra Rabani, Song-Hee Lee, Hyo-Sun Kim, Jeseung Yoo, Ye-Rim Park, Tahir Maqbool, Chinna Bathula, Yasir Jamil, Sajjad Hussain, Young-Soo Seo
Summary: Research has shown that zinc oxide nanostructures in the cosmetic industry can better protect the skin from UV damage and reduce photocatalytic activity. Structures synthesized with silica as core-shell or reverse core-shell show better performance in neutralizing free radicals and maintaining nanoscale dimensions.
Article
Environmental Sciences
Zeshan Arshad, Tahir Maqbool, Kyung Hoon Shin, Seung-Hee Kim, Jin Hur
Summary: The study used stable isotope-labeled soluble microbial products and substrates to investigate their assimilation in the formation of new biological products in activated sludge processes. It was found that humic-like substances were present in the non-consumable portion of SMP, and EPS formation mainly resulted from the humic-like components in SMP.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Muhammad Saboor Siddique, Xuejun Xiong, Hankun Yang, Tahir Maqbool, Nigel Graham, Wenzheng Yu
Summary: The combination of ozone and nanofiltration in drinking water treatment effectively separates dissolved organic matter, reducing disinfection by-products formation. Ozone treatment decreases molecular weight of DOM and enhances removal of DBP precursors. Spectroscopic indices are useful in tracking DOM changes and DBP formation potential.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Li Chen, Tahir Maqbool, Congyu Hou, Wanyi Fu, Xihui Zhang
Summary: This study investigated the effectiveness and mechanism of Mn3O4 based PMS activation for degrading BPA in water. Efficient removal of BPA and substantial mineralization were achieved under optimum conditions. Mn3O4 demonstrated high stability and reusability, with an 11% reduction in BPA removal after eight cycles of reuse.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Tahir Maqbool, Mingming Sun, Li Chen, Zhenghua Zhang
Summary: This research evaluated the performance of a reactive electrochemical ceramic membrane (REM) in treating secondary effluent and investigated the fate of dissolved organic matter (DOM) at the molecular level. The study found that REM effectively removed DOM through adsorption, electrosorption, and oxidation processes, leading to the degradation of fluorescence components and the formation of stable finished water. The combination of fluorescence spectroscopy and FT-ICR MS provided insights into the behavior of DOM during electro-oxidation in the REM system. These findings are significant for understanding the potential of REM in different water sources and predicting the composition of DOM in finished water.
Review
Engineering, Environmental
Muhammad Bilal Asif, Sidra Iftekhar, Tahir Maqbool, Biplob Kumar Pramanik, Shamas Tabraiz, Mika Sillanpaa, Zhenghua Zhang
Summary: The application and research of two-dimensional (2D) membranes in water purification have made significant progress, especially in materials like graphene. However, challenges remain in industrial production, particularly in large-scale fabrication of nanoporous membranes and ensuring membrane stability.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Tahir Maqbool, Keyou He, Lele Cui, Yangyang Zhang, Mingming Sun, Zhenghua Zhang, Quang Viet Ly
Summary: Refractory organic matter in different water matrices presents significant challenges for treatment processes. This study introduced a substoichiometric titanium oxide (Ti4O7) anode-designed reactive electrochemical membrane (REM) and comprehensively evaluated its performance in removing a surrogate refractory organic compound, humic acid (HA). The results showed that REM could efficiently remove HA at medium to high concentrations with economical energy consumption.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Keyou He, Tahir Maqbool, Mingming Sun, Zhenghua Zhang, Quang Viet Ly
Summary: This study introduces a promising energy efficient technology that uses Ti4O7 anode reactive electrochemical membrane (REM) coupled with permonosulfate (PMS) to treat HA-enriched wastewater. The hybrid PMS/REM system has better HA degradation and energy efficiency compared to the traditional REM system. The specific conditions greatly affect the removal performance.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Li Chen, Tahir Maqbool, Ghazanfar Nazir, Congyu Hou, Yulong Yang, Jianning Guo, Xihui Zhang
Summary: In this study, a highly efficient catalytic ceramic membrane (CCM) was developed for the degradation of endocrine disrupting compounds (EDCs) in drinking water. The CCM, synthesized at high calcination temperatures, effectively reduced the EDCs to trace levels through the generation of singlet oxygen (1O2) and exhibited special selectivity for phenols and bisphenols. The findings of this study can serve as a baseline for full-scale water treatment applications.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Li Chen, Tahir Maqbool, Wanyi Fu, Yulong Yang, Congyu Hou, Jianning Guo, Xihui Zhang
Summary: This study investigated the performance of catalytic ceramic membranes in activating peroxymonosulfate for the degradation of emerging organic contaminants. The results showed that the catalytic ceramic membrane can efficiently degrade different organic pollutants, and it has outstanding catalytic stability with low leaching. Hydroxylation and C-N bond cleavage were identified as the main degradation pathways.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Iqra Rabani, Song-Hee Lee, Hyo-Sun Kim, Jeseung Yoo, Sajjad Hussain, Tahir Maqbool, Young-Soo Seo
Summary: A novel ZnO-CNF hybrid material with enhanced dispersion, low whitening effect, and high UV blocking performance was developed in this study, showing promising applications in the cosmetics field for added value.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
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.