检索结果-内蒙古大学图书馆

SSRN 2022年

作者： Zheng, Han Du, Jiangkun Zhong, Hua Yuan, Qian Zhang, Jiaquan Kang, Wei Sun, Qingbin Tao, Min Xiao, Wensheng Dionysiou, Dionysios D. Huang, Ying Hubei Key Laboratory of Mine Environmental Pollution Control and Remediation Hubei Polytechnic University Huangshi435003 China School of Environment Hangzhou Institute for Advanced Study University of Chinese Academy of Sciences Hangzhou310024 China School of Environmental Studies China University of Geosciences Wuhan430074 China State Key Laboratory of Water Resources and Hydropower Engineering Science Wuhan University Wuhan430072 China School of Earth and Space Exploration Arizona State University TempeAZ United States School of Environmental Science and Engineering Hubei Polytechnic University Huangshi435003 China Environmental Engineering and Science Program Department of Chemical and Environmental Engineering 705 Engineering Research Center University of Cincinnati CincinnatiOH45221-0012 United States

A novel sulfur-modified Fe3O4 composite (SF10) with excellent magnetic properties and core-shell structure was prepared via a solvothermal method. Compared with unmodified Fe3O4, SF10 exhibited excellent performance on the activation of peroxydisulfate (PDS) for atrazine degradation and maintained good reusability. According to the quenching experiments and electron paramagnetic resonance (EPR) test, hydroxyl radical (•OH) and sulfate radical (SO4•−) were the main active species. Characterizations revealed that sulfur modification introduced pyrite and pyrrhotite phases into Fe3O4 to improve the catalytic activity and electrical conductivity. Density functional theory calculations showed that sulfur modification enhanced the electron transfer from Fe3O4 to PDS and the adsorption of PDS on the catalyst surface, favoring the PDS activation. Moreover, the surface reducing sulfur species (≡S2− and ≡S22−) acted as the electron donor for Fe(II) regeneration, driving a faster Fe(II)/Fe(III) redox cycle of SF10 for the activation of PDS. This study provides insights of the synergism between sulfur and iron, and broadens the application of Fe3O4 in PDS-based advanced oxidation processes for wastewater treatment. © 2022, The Authors. All rights reserved.

关键词： Magnetite

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High Potential New Industrial Species Enterobacter xiangfangenesis BUU37 for the Production of Succinic Acid by Fermentation Using Cassava Starch Hydrolysate

Research Square

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Research Square 2022年

作者： Chamsart, Saethawat Ditkunchaimongkol, Nattapoung Rattanapradit, Krongchan Sukna, Jatuporn Malairuang, Kwanruthai Krajang, Morakot Department of Biology Faculty of Science Burapha University Chon Buri20131 Thailand Biological Science Program Faculty of Science Burapha University Chon Buri20131 Thailand Biochemical Engineering Pilot Plant Faculty of Science Burapha University Chon Buri20131 Thailand Environmental Science Program Faculty of Science Burapha University Chon Buri20131 Thailand Department of Biotechnology Faculty of Science Burapha University Chon Buri20131 Thailand

New organic acid-producing bacteria were isolated from buffalo rumens. The 29 of 46 isolates could produce succinic acid (SA), but only the 6 isolates had the potential. In shake flasks culture under CO2 condition, isolate no. 37 produced SA at a concentration of 2.28 g/L, and with a better inoculum, it produced SA at 6.74 g/L with a yield coefficient, Yp/s, productivity, rp, and efficiency, Ef of 0.45 g/g, 0.28 g/L/h and 66.39%, respectively within 24 h. The 16S rRNA gene of isolate 37 was sequenced identified. It is Enterobacter xiangfangensis, later named E. xiangfangensis BUU37 which is a high potential new industrial species. Its suitable N-, C-, and carbonate sources were yeast extract, glucose hydrolysate from cassava starch hydrolysis (CSH), and MgCO3. With the medium PM II-1x of nutrients rich, CSH glucose was used efficiently at 21.46 g/L and conversed to SA at 10.80 g/L with Yp/s of 0.50 g/g, rp of 0.45 g/L/h, and Ef of 76.33%, respectively. The larger-scale productions of SA in the 5-L fermenter, with certain optimum conditions, i.e., pH 6.8, at 39 °C, 0.5 vvm CO2 sparging, agitation, and high-nutrient compositions, gave very good results. The use of PM II-2x medium of 2× nutrients and 2× C-sources of 50 g/L CSH glucose plus 25 g/L molasses and with the impeller speeds at 200-400 rpm, SA was produced at 35.52 g/L with Yp/s of 0.65 g/g, rp of 1.48 g/L/h, and Ef of 99.96%, respectively. Furthermore, with the use of PM II-4x medium with 4× the nutrients and 4× the SCH glucose at 100 g/L plus 40 g/L of molasses (a total sugar conc of 120 g/L) and with the impeller speed at 400-500 rpm, SA was produced at 53.60 g/L with Yp/s of 0.54 g/g, rp of 2.23 g/L/h, and Ef of 82.88%, respectively. The use of PM II-4.8x medium of 4.8× nutrients did not show a significant difference. For the high throughput production, the PM II-4x cultivation was modified as the repeated multiple sequential batches of 3 cycles. The results showed no significant differences of those value

关键词： Fermentation

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Occurrence and fate of pharmaceutical pollutants in wastewater: Insights on ecotoxicity, health risk, and state–of–the-art removal

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Chemosphere 2024年 354卷 141678页

作者： Nguyen, Minh-Ky Lin, Chitsan Bui, Xuan-Thanh Rakib, Md. Refat Jahan Nguyen, Hoang-Lam Truong, Quoc-Minh Hoang, Hong-Giang Tran, Huu-Tuan Malafaia, Guilherme Idris, Abubakr M. Faculty of Environment and Natural Resources Nong Lam University Hamlet 6 Linh Trung Ward Thu Duc City Ho Chi Minh City700000 Viet Nam Ph.D. Program in Maritime Science and Technology National Kaohsiung University of Science and Technology Kaohsiung81157 Taiwan Department of Marine Environmental Engineering National Kaohsiung University of Science and Technology Kaohsiung81157 Taiwan Linh Trung Ward Thu Duc City Ho Chi Minh City700000 Viet Nam Ho Chi Minh City700000 Viet Nam Department of Environmental Science and Management North South University Dhaka Bashundhara1229 Bangladesh Department of Civil Engineering McGill University Montreal Canada Faculty of Management Science Thu Dau Mot University Binh Duong 75000 Viet Nam Faculty of Medicine Dong Nai Technology University Dong Nai Bien Hoa76100 Viet Nam Laboratory of Ecology and Environmental Management Science and Technology Advanced Institute Van Lang University Ho Chi Minh City700000 Viet Nam Faculty of Applied Technology School of Engineering and Technology Van Lang University Ho Chi Minh City700000 Viet Nam Post-Graduation Program in Ecology Conservation and Biodiversity Federal University of Uberlândia MG Uberlândia Brazil Post-Graduation Program in Biotechnology and Biodiversity Federal University of Goiás GO Goiânia Brazil Post-Graduation Program in Conservation of Cerrado Natural Resources Goiano Federal Institute GO Urutaí Brazil Department of Chemistry College of Science King Khalid University Abha62529 Saudi Arabia King Khalid University Abha62529 Saudi Arabia

Pharmaceutical active compound (PhAC) residues are considered an emerging micropollutant that enters the aquatic environment and causes harmful ecotoxicity. The significant sources of PhACs in the environment include the pharmaceutical industry, hospital streams, and agricultural wastes (animal husbandry). Recent investigations demonstrated that wastewater treatment plants (WWTPs) are an important source of PhACs discharging ecosystems. Several commonly reported that PhACs are detected in a range level from ng L−1 to μg L−1 concentration in WWTP effluents. These compounds can have acute and chronic adverse impacts on natural wildlife, including flora and fauna. The approaches for PhAC removals in WWTPs include bioremediation, adsorption (e.g., biochar, chitosan, and graphene), and advanced oxidation processes (AOPs). Overall, adsorption and AOPs can effectively remove PhACs from wastewater aided by oxidizing radicals. Heterogeneous photocatalysis has also proved to be a sustainable solution. Bioremediation approaches such as membrane bioreactors (MBRs), constructed wetlands (CWs), and microalgal-based systems were applied to minimize pharmaceutical pollution. Noteworthy, applying MBRs has illustrated high removal efficiencies of up to 99%, promising prospective future. However, WWTPs should be combined with advanced solutions, e.g., AOPs/photodegradation, microalgae–bacteria consortia, etc., to treat and minimize their accumulation. More effective and novel technologies (e.g., new generation bioremediation) for PhAC degradation must be investigated and specially designed for a low-cost and full-scale. Investigating green and eco-friendly PhACs with advantages, e.g., low persistence, no bioaccumulation, less or non-toxicity, and environmentally friendly, is also necessary. © 2024 Elsevier Ltd

关键词： Microalgae

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A mini-review on plasticrusts: occurrence, current trends, potential threats, and recommendations for coastal sustainability

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environmental Monitoring and Assessment 2024年第2期196卷 137-137页

作者： Nguyen, Minh-Ky Rakib, Md. Refat Jahan Nguyen, Hoang-Lam Lin, Chitsan Malafaia, Guilherme Idris, Abubakr M. Faculty of Environment and Natural Resources Nong Lam University of Ho Chi Minh City Hamlet 6 Linh Trung Ward Thu Duc City Ho Chi Minh City700000 Viet Nam Ph.D. Program in Maritime Science and Technology National Kaohsiung University of Science and Technology Kaohsiung81157 Taiwan Department of Fisheries and Marine Science Faculty of Science Noakhali Science and Technology University Sonapur Noakhali3814 Bangladesh Department of Civil Engineering McGill University Montreal Canada Department of Marine Environmental Engineering National Kaohsiung University of Science and Technology Kaohsiung81157 Taiwan Post-Graduation Program in Ecology Conservation and Biodiversity Federal University of Uberlândia MG Uberlândia Brazil Post-Graduation Program in Biotechnology and Biodiversity Federal University of Goiás GO Goiânia Brazil Post-Graduation Program in Conservation of Cerrado Natural Resources Goiano Federal Institute GO Urutaí Brazil Department of Chemistry College of Science King Khalid University Abha62529 Saudi Arabia King Khalid University Abha62529 Saudi Arabia

Plasticrusts manifest as a coating on intertidal rocks due to environmental exposure. They refer to crushed plastic debris that blankets rocks found along intertidal shorelines. This study significantly contributes to a better understanding of the occurrence of these novel plastic formations, shedding light on their potential pathways of formation during the Anthropocene era. The research provides comprehensive insights into the composition, origins, challenges, and effective management strategies for removing coastal plastic litter. The findings of this investigation offer valuable evidence regarding the formation and impact of these recently discovered plastic items in coastal regions, prompting discussions about their formation processes and their effects on the marine ecosystem. Recognizing that these newly emerged plastic litter pose a considerable threat to the marine environment is crucial. With their emergence, we face an environmental challenge, especially concerning the health of coastal ecosystems. Plasticrusts, when degraded, can release microplastics (MPs) and nanoparticles (NPs) into the surrounding environment. These micro- and nano-sized plastic particles pose significant ecological risks as they persist in ecosystems, potentially harming wildlife and entering the food chain, causing widespread environmental contamination. Significantly, it outlines strategies to minimize the impact of this emerging plastic debris and its source. © 2024, The Author(s), under exclusive licence to Springer Nature Switzerland AG.

关键词： Ecosystems

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First-Attempt Application of Sponge Membrane Bioreactor Treating 3,4-Dichlorophenol Contaminated Wastewater at Different Hydraulic Retention Times

SSRN

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SSRN 2024年

作者： Nhu Nguyet, Phan Nguyen, Thi-Kim-Ngan Thuan, Ngo Thi Yen, Duong Hoang Vo, Thi-Kim-Quyen Nguyen, Thi-Yen-Phuong Bui, Xuan-Thanh Watari, Takahiro Yamaguchi, Takashi Hatamoto, Masashi Faculty of Environment University of Science Ho Chi Minh City Viet Nam Ho Chi Minh City Viet Nam Ho Chi Minh City Viet Nam School of Chemical and Environmental Engineering International University Ho Chi Minh City Viet Nam Master Program in Water Technology Reuse and Management Vietnamese German University Binh Duong Province Viet Nam Ho Chi Minh City Viet Nam Department of Civil and Environmental Engineering Nagaoka University of Technology Niigata Japan Department of Science of Technology Innovation Nagaoka University of Technology Niigata Japan

Chlorophenols (CPs) are priority pollutants which persist in the environment for up to 28 years. The release of Chlorophenol derivatives into aquatic environments poses serious risks to living beings because of their mutagenic, carcinogenic, genotoxic, and teratogenic effects. This study highlights the first application of a Sponge Membrane Bioreactor (Sponge-MBR) for treating 3,4-Dichlorophenol (3,4-DCP)-contaminated wastewater. Herein, a lab-scale Sponge-MBR was conducted to treat 3,4-DCP-contaminated wastewater at various hydraulic retention times (HRTs) ranging from 5 to 15 h in terms of organic matter and 3,4-DCP removal, and microbial community shifts. The sludge characteristics were also performed. Results showed that a rise in HRT at 5, 10 and 15 h increased the removal efficiencies of COD (84 – 94%) and 3,4-DCP (90 – 96%). Under 30-day operation period at optimal HRT (15 h), corresponding to OLR of 2.84 ± 0.18 kg COD·m-3·day-1, the removal efficiencies of both 3,4-DCP and COD were 96% with the average removal rate of 356 ± 83 mg COD·g-SS-1·day-1 and 1.62 ± 0.38 mg 3,4-DCP·g-SS-1·day -1. The attached biomass in sponge media was recorded higher than suspended biomass and contributed 49 – 66% of the total biomass, indicating that the microbial community shifts could degrade organic matter and remove 3,4-DCP. Proteobacteria dominated the microbial community because of their adaptability to environmental changes. The findings derived from this study provide useful perspectives on the application of Sponge-MBR treating 3,4-DCP-contaminated wastewater and offer Sponge-MBR as a potential alternative for treating wastewater contaminated with toxic chemicals. © 2024, The Authors. All rights reserved.

关键词： Biomass

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Remediation of mercury-contaminated soils and sediments using biochar:a critical review

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Biochar 2021年第1期3卷 23-35页

作者： Qian Yang Yongjie Wang Huan Zhong State Key Laboratory of Pollution Control and Resources Reuse School of the EnvironmentNanjing University163 Xian Lin Da DaoNanjing 210023People’s Republic of China Key Laboratory of Geographic Information Science Ministry of EducationSchool of Geographic SciencesEast China Normal UniversityShanghai 200241People’s Republic of China College of Biological and Environmental Engineering Binzhou UniversityBinzhou 256600People’s Republic of China Environmental and Life Sciences Program(EnLS) Trent UniversityPeterboroughONCanada

The transformation of mercury(Hg)into the more toxic and bioaccumulative form methylmercury(MeHg)in soils and sediments can lead to the biomagnification of MeHg through the food chain,which poses ecological and health *** the last decade,biochar application,an in situ remediation technique,has been shown to be effective in mitigating the risks from Hg in soils and ***,uncertainties associated with biochar use and its underlying mechanisms ***,we summarize recent studies on the effects and advantages of biochar amendment related to Hg biogeochemistry and its bioavailability in soils and sediments and systematically analyze the progress made in understanding the underlying mechanisms responsible for reductions in Hg *** existing literature indicates(1)that biochar application decreases the mobility of inorganic Hg in soils and sediments and(2)that biochar can reduce the bioavailability of MeHg and its accumulation in crops but has a complex effect on net MeHg *** this review,two main mechanisms,a direct mechanism(e.g.,Hg-biochar binding)and an indirect mechanism(e.g.,biochar-impacted sulfur cycling and thus Hg-soil binding),that explain the reduction in Hg bioavailability by biochar amendment based on the interactions among biochar,soil and Hg under redox conditions are ***,the existing problems with the use of biochar to treat Hg-contaminated soils and sediments,such as the appropriate dose and the long-term effectiveness of biochar,are *** research involving laboratory tests and field applications is necessary to obtain a mechanistic understanding of the role of biochar in reducing Hg bioavailability in diverse soil types under varying redox conditions and to develop completely green and sustainable biochar-based functional materials for mitigating Hg-related health risks.

关键词： Biochar Methylmercury Soils Sediments Bioavailability

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Species diversity and dominance of Oligochaeta in copper and cadmium polluted soil 10

Species diversity and dominance of Oligochaeta in copper and...

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10th International Seminar on New Paradigm and Innovation of Natural sciences and itsApplication, ISNPINSA 2020

作者： Ulfah, M. Anggoro, S. Soeprobowati, T.R. Syafrudin, S. Department of Biology Faculty of Mathematics Science and Information Technology Universitas PGRI Semarang Semarang Indonesia Doctorate Program of Environmental Science School of Postgraduate Studies Univesitas Diponegoro Semarang Indonesia Faculty of Fisheries and Marine Science Universitas Diponegoro Semarang Indonesia Department of Biology Faculty of Science and Mathematics Universitas Diponegoro Semarang Indonesia Department of Enviromental Engineering Faculty of Engineering Universitas Diponegoro Semarang Indonesia School of Postgraduate Studies Universitas Diponegoro Semarang Indonesia

The aim of this study was to determine the dominance and species diversity of oligochaeta were studied incopper and cadmium polluted soil. This location is used for the garbage disposal of Jatibarang Landfill Semarang City residents, Central Java. Oligochaeta were collected from 5 research sites. The research method used is field experiment. Oligochaeta sampling was carried out based on a random sampling method. Oligochaeta sampling in Jatibarang Landfill was carried out at a depth of 25 cm. Analysis of oligochaeta diversity includes species diversity using the index formula Shannon-Wienner and dominance with the index formula Simpson. The species diversity (Shannon-Weiner Index) showed value of 0.191 (site 1), 0.411 (site 2), 0.539 (site 3), 0.137 (site 4), 0.443 (site 5) and the dominance calculated was 0.207 (site 1), 0.024 (site 2), 0.279 (site 3), 0.045 (site 4), 0.031 (site 5) which indicates that the diversity and the dominance were inversely related. The population density (individuals/m2) of the Oligochaeta species at 5 research sites showed variations. The total density of L. terrestris recorded was 280.66 (site 1), 59.66 (site 2), 130.33 (site 3), 136.66 (site 4), 62 (site 5), and the total density of Pheretrima sp 14 (site 1), 10 (site 2), 39 (site 3), 4.33 (site 4), 12 (site 5). Two species of Oligochaeta showed high richness whereas some were sparsely populated. © Published under licence by IOP Publishing Ltd.

关键词： Biodiversity

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Magnetically separable silica-chitosan hybrids for efficient phosphate adsorption in aqueous solution

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Case Studies in Chemical and environmental engineering 2025年 11卷

作者： Nuryono, Nuryono Sukamto, Sukamto Kunarti, Eko Sri Krisbiantoro, Philip Anggo Wan Abdullah, Wan Nazwanie Kamiya, Yuichi Department of Chemistry Faculty of Mathematics and Natural Sciences Universitas Gadjah Mada Bulaksumur Yogyakarta 55281 Indonesia of Life Science Hokkaido University Kita 10 Nishi 8 Kita-ku Sapporo 060-0810 Japan International Graduate Program of Molecular Science and Technology National Taiwan University No. 1 Sec. 4 Roosevelt Road Taipei 10617 Taiwan Molecular Science and Technology Program Taiwan International Graduate Program Academia Sinica Taipei 11529 Taiwan Department of Chemical Engineering College of Engineering National Taiwan University Taipei 10617 Taiwan School of Chemical Science Universiti Sains Malaysia Gelugor Penang 11800 Malaysia Faculty of Environmental Earth Science Hokkaido University Nishi 5 Kita 10 Kita-ku Sapporo 060-0810 Japan

In the present study, magnetic silica-chitosan hybrid (NMP@SiO2/CPTMS/Chi) was synthesized via a convenient and green sol-gel technique under room temperature, and the material was used as a highly efficient magnetic ... 详细信息

In the present study, magnetic silica-chitosan hybrid (NMP@SiO₂/CPTMS/Chi) was synthesized via a convenient and green sol-gel technique under room temperature, and the material was used as a highly efficient magnetic adsorbent for the removal of phosphate ions in water. While the magnetic properties of NMP from iron enable the material to be quickly separated via magnetic separation, the abundant active sites from the chitosan made the hybrid exhibit high adsorption capacity for phosphate ions. At pH 6, the removal of phosphate ions followed the pseudo-second-order (PSO) kinetic model with the adsorption rate constant (k₂) of 5.9 × 10^-3 mg g⁻¹ min⁻¹ and obeyed the Langmuir isotherm model with a maximum adsorption capacity (q_max) of 15.06 mg g⁻¹, outperforming most of the previously reported adsorbents. Stability tests and derivative thermogravimetry (DTG) analysis demonstrated that NMP@SiO₂/CPTMS/Chi remained stable even under strongly acidic conditions and possessed high thermal stability, respectively. The synergistic combination of high adsorption capacity, acid stability, thermal stability, and facile magnetic separation renders NMP@SiO₂/CPTMS/Chi a promising adsorbent for wastewater treatment and environmental remediation. Overall, this innovative material represents a significant advancement in phosphate removal, offering a sustainable and effective solution to address the global challenge of water pollution and protect aquatic ecosystems. © 2025 The Authors

关键词： Adsorption Chitosan Magnetic material Phosphate Silica Sol-gel

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Impact of high polymer modification on reflective cracking performance life of asphalt concrete overlays

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International Journal of Pavement Research and Technology 2020年第5期13卷 510-523页

作者： Habbouche, Jhony Hajj, Elie Y. Piratheepan, Murugaiyah Sebaaly, Peter E. Research Scientist II Pavements Team Virginia Transportation Research Council 530 Edgemont Rd. CharlottesvilleVA22903 United States Pavement Engineering and Science Program Department of Civil & Environmental Engineering University of Nevada RenoNV89557 United States

Reflective cracking is one of the major type of distresses associated with the use of asphalt concrete (AC) overlays for rehabilitating deteriorated asphalt pavements. The differential movements across the underlying cracks due to the combined effects of heavy wheel loads and temperature fluctuations result in physical tearing of the AC overlay. Thus, the long-term performance of AC overlays highly depends on their ability to resist reflective cracking. While conventional polymer-modified (PMA) AC mixtures with 2–3% polymer content have shown improved long-term performance when used as overlays, it is also believed that AC mixtures with higher polymer content may offer additional advantages for flexible rehabilitated pavements subjected to heavy and/or slow-moving traffic loads. This paper describes the research effort completed to evaluate the reflective cracking performance life of high polymer-modified (HP) AC mixtures used as overlays. Sixteen AC mixtures were produced in the laboratory using PMA and HP asphalt binders. These mixtures were evaluated in terms of their dynamic modulus and resistance to reflective cracking. The engineering properties and laboratory performance data were combined into a mechanistic analysis that took into consideration the existing AC pavement condition, mixture-specific material properties, traffic condition, and climate. Overall, the HP AC mixtures resulted in an increase in both time to reach initial cracking and reflective cracking performance life of the AC overlay when compared to their respective PMA AC overlay mixtures. © 2020, Chinese Society of Pavement engineering.

关键词： Mixtures

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Analyzing microbial communities and metabolic functions in estuaries affected by human activity to uncover bioelectrochemical system potential

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environmental Advances 2024年 16卷

作者： Amin, Muhammad Hilman Fu'adil Kim, Hyun-Woo Kim, Kyunghoi Wahyudianto, Febri Eko Dianbudiyanto, Wahid Oktavitri, Nur Indradewi Advanced Tropical Biodiversity Genomics and Conservation Research Group Faculty of Science and Technology Universitas Airlangga Surabaya 60115 Indonesia Department of Biology Faculty of Science and Technology Universitas Airlangga Surabaya 60115 Indonesia Department of Marine Biology Pukyong National University Busan 48513 South Korea Department of Ocean Engineering Pukyong National University Busan 48513 South Korea Study Program of Environmental Engineering Faculty of Science and Technology Universitas Airlangga Surabaya 60115 Indonesia

In the context of bioelectrochemical systems (BES), a profound understanding of the taxonomic composition within indigenous microbial communities is crucial. Their metabolic versatility assumes a foundational role in dictating the functionality of BES, yielding diverse applications for bioenergy production and bioremediation in anthropogenically impacted estuaries. Employing high-throughput sequencing of the V3-V4 region of 16S rRNA and predictive metagenomic analyses of three different estuaries samples (eutrophicated urban reservoir, mud volcano impacted river, and its river mouth), this study delves into the intricate interplay between these communities and their metabolic functions in response to human-induced perturbations, with a specific focus on their applicability to BES. Our findings illuminate remarkable distinctions among the three samples, manifesting in variations in microbial composition and functional metabolic pathways within the respective ecosystems. The mud volcano-affected river, characterized by the highest microbial diversity, exhibited the most diverse array of functional metabolic processes, prominently dominated by chemoheterotrophy (67.43%). In contrast, the river mouth displayed a distinct penchant for autotrophy (33.33%). The eutrophicated urban reservoir showcased a balanced coexistence of chemoheterotrophy (41.18%) and autotrophy (35.29%). Regarding metabolic potential for BES application, most of metabolism potential were associated with anodic activity, while cathodic activity was restricted to autotrophy and its relatives. The results suggested that the microbial communities anthropogenically impacted estuaries were potentially used for anodic and cathodic reactions in BES as electrogens to generate bioelectricity and reduce of pollutants. © 2024

关键词： 16S rDNA Estuaries Microbial communities Pollution Predictive metagenomic Renewable energy

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