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Open Ceramics 2025年 22卷

作者： Pin, Clarissa Ferreira Brandler, Danieli Flores, Gabriela Cristina Perusin Kubiaki Levandoski, William Mateus Bruschi, Giovani Jordi Pelissaro, Deise Trevizan Dervanoski, Adriana Korf, Eduardo Pavan Pasquali, Gean Delise Leal Graduate Program in Enviromental Science and Technology Federal University of Fronteira Sul Erechim/RS 99700-970 Brazil Departament of Civil Engineering Integrated Regional University of Alto Uruguai and Missões – Erechim/RS 99709-910 Brazil Departament of Environmental and Sanitary Engineering Federal University of Fronteira Sul Erechim/RS 99700-970 Brazil

Ceramic membranes have emerged as a promising solution for microfiltration processes, offering advantages such as cost-effectiveness, environmental benefits, and the utilization of abundant raw materials derived from agro-industrial solid waste. This study investigates the fabrication and performance of ceramic membranes composed of kaolin the varying proportions of sugarcane bagasse ash (SCBA - 40 wt % and 60 wt %), with focus on efficiency in treating biodiesel wastewater. The membranes were characterized (porosity, average pore diameter, and mechanical strength). The membrane containing 40 wt % SCBA - employed without any pre-treatment- exhibited the best overall performance, achieving porosity of 38.5 %, an pore diameter of 0.9 µm, and mechanical strength of 27 MPa, indicating a favorable balance between permeability and structural integrity. The best-performing membrane achieved removal efficiencies of color 83 % and turbidity 67 %. Microstructural analysis revealed a network of interconnected mesopores, which are particularly effective for the retention of colloidal and suspended contaminants. © 2025 The Authors

关键词： Agro-industrial solid waste Industrial effluent Membrane filtration

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Copper single atoms/atomic clusters modified electrocatalytic membrane for antibiotic removal and membrane fouling control via electro-Fenton reactions

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Chemical engineering Journal 2025年 515卷

作者： Zhang, Zixin Huang, Guohe Li, Yongping Yao, Yao Chen, Xiujuan Zhang, Yuanzheng Luo, Yifei Zhao, Kai State Key Laboratory of Regional Environment and Sustainability School of Environment Beijing Normal University Beijing100875 China State Key Laboratory of Regional Environment and Sustainability China-Canada Center for Energy Environment and Ecology Research UR-BNU School of Environment Beijing Normal University Beijing100875 China Environmental Systems Engineering Program University of Regina ReginaSKS4S 0A2 Canada Institute for Energy Environment and Sustainable Communities University of Regina ReginaS4S 0A2 Canada Department of Civil Engineering The University of Texas at Arlington ArlingtonTX United States College of Environmental Science and Engineering North China Electric Power University Beijing102206 China

Low-pressure membrane filtration is an important technology for water treatment but suffers from the inefficient removal of low-molecular-weight pollutants (such as antibiotics) and severe membrane fouling. Herein, an electrocatalytic membrane (CuSAs/ACs-NC/CMM) modified with the catalyst containing Cu single atoms (SAs) and atomic clusters (ACs) composite active sites was prepared for the removal of tetracycline (TC) and the control of membrane fouling. Cu ACs synergistically interacted with Cu SAs, enabling a high-efficiency electro-Fenton process. In addition to serving as the main active site for the in-situ generation of H2O2, Cu ACs could also induce the charge rearrangement of Cu SAs, thus reducing the energy barrier of H2O2 activation into ·OH at the Cu SAs site. CuSAs/ACs-NC/CMM produced ·OH through a sequential reaction of H2O2 generation and activation to oxidize pollutants. At a low voltage of −2.5 V, CuSAs/ACs-NC/CMM delivered excellent TC removal kinetics (0.0181 min−1) and removal ratio (90.0 %), and effectively reduced the membrane fouling caused by the mixture of humic acid (HA), bovine serum albumin (BSA), and sodium alginate (SA). CuSAs/ACs-NC/CMM also performed well under actual water conditions. This work proposes a strategy for developing electrocatalytic membranes using catalysts with multiple atomic-level active sites, promoting the development and application of advanced membranes in water treatment. © 2025 Elsevier B.V.

关键词： Membrane fouling

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MEASUREMENT AND MODELING OF WESTERN WASHINGTON PRECIPITATION CHEMISTRY

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WATER AIR AND SOIL POLLUTION 1985年第1期26卷 71-84页

作者： VONG, RJ LARSON, TV COVERT, DS WAGGONER, AP 1.Environmental Engineering and Science Program Department of Civil Engineering University of Washington WA Seattle 98195 USA

Precipitation was collected and chemically analyzed for a 1 yr period at four sites in western Washington. Spatial and seasonal variabilities in concentrations were identified with the highest concentrations nearest emission sources and in the summer. Multiple correlations among measured species revealed five groupings which were interpreted as the influences of seasalt, metals from a Cu smelter, an urban factor, soil, and acidic sulfate aerosol. A simple washout model predicted that the Cu smelter was the major contributor to a budget for rainwater sulfate. Measurement uncertainties were estimated for each analyte.

关键词： Acid precipitation Air pollution monitoring Copper smelter Emission Sulfate Washington (western)

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Biochar supported metal cobalt activated PAA to efficiently degrade CBZ: The important role of Co (IV) in the generation of peroxyacyl radicals

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Journal of Water Process engineering 2025年 75卷

作者： Mengyu Li Shaochun Yuan Yuhang Liu Siqi Chen Mingyang Si Rong Liu Bangxing Ren Zhe Zhang Zhen Liu School of River and Ocean Engineering Chongqing Jiaotong University Chongqing 400074 China Engineering Laboratory of Environmental Hydraulic Engineering of Chongqing Municipal Development and Reform Commission Chongqing Jiaotong University Chongqing 400074 China Environmental Engineering and Science Program Department of Chemical and Environmental Engineering (ChEE) University of Cincinnati Cincinnati OH 45221-0071 USA

This study utilized biochar-supported transition metal cobalt as a model catalyst to activate peracetic acid (PAA) for carbamazepine (CBZ) degradation. The acetyl peroxyl radical (CH 3 (CO)OO•) was identified as the predominant reactive oxygen species (ROS) responsible for CBZ degradation in this system, with its generation primarily facilitated by the catalytic activation of PAA mediated by high-valent cobalt species [Co(IV)]. The generation of Co(IV) species occurs via PAA-mediated stepwise single-electron oxidation of Co(II). Comprehensive characterization techniques (SEM, XRD, FTIR, XPS) demonstrated that cobalt-modified biochar (Co@BC 700°C ) exhibits a layered structure with increased surface area and numerous functional groups. The incorporation of cobalt simultaneously increases active site density and optimizes electron transfer efficiency within the BC. As a result, Co@BC 700°C activated PAA achieved efficient degradation of CBZ within 10 min under weakly acidic conditions. The comprehensive free radical investigation experiments collectively demonstrated that CH 3 (CO)OO• as the dominant reactive species driving CBZ degradation. Meanwhile, chemical trapping experiments confirmed that Co(IV) species significantly influence the degradation of CBZ, and the primary role of Co(IV) species is to mediate the generation of CH 3 (CO)OO• via electron transfer mechanisms. Furthermore, integrated toxicological assessments and circulation experiments verified the catalytic potential of Co@BC 700°C , demonstrating sustained removal efficiency in complex aqueous environments containing competitive anions and natural organic species. The results of this study provide innovative understanding of CH 3 (CO)OO• formation through Co(IV)-activated PAA catalysis, as well as a unique viewpoint on applying PAA-driven advanced oxidation technologies for wastewater treatment.

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PHYSICOCHEMICAL MODEL OF TOXIC-SUBSTANCES IN THE GREAT-LAKES

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JOURNAL OF GREAT LAKES RESEARCH 1983年第4期9卷 474-496页

作者： THOMANN, RV DITORO, DM Environmental Engineering & Science Program Manhattan College Bronx N.Y. 10471

A physicochemical model of the fate of toxic substances in the Great Lakes was constructed from mass balance principles, incorporating principal mechanisms of particulate sorption-desorption, sediment-water and atmosphere-water interactions, and chemical and biochemical decay. The steady state mass balance model of the suspended solids in the open lake water yielded net solids loss rates from 0.02 m/day for Saginaw Bay to 1.22 m/day or Lake Ontario. Calibration of the toxic model was through comparison to 239Pu data collected in the 1970s using a 23 yr time variable calculation. In general, the sediments were interactive with the water column in the Great Lakes through resuspension and horizontal transport. Response times (50%) of 239Pu following a cessation of load extend beyond 10 yr with sediment resuspension. The calibrated model was also applied to polychlorinated biphenyl (PCB) using a high and low estimate of contemporary external load and with and without volatilization. The lower load level (lake range 640-1390 kg/yr) with volatilization (at an exchange rate of 0.1 m/day) was more representative of observed surface sediment data for the open lake waters. Calculated water column concentrations for the lower load level with and without volatilization ranged from 0.25-0.90 ng/l for open lake waters. Response times (50%) for PCB following cessation of load varied from < 5 yr when volatilization was included to 10-20 yr without volatilization. Comparison of these response times to decline of concentrations of PCB in Lake Michigan bloaters indicated that, at least for that lake, volatilization occurred at an exchange rate of .apprx. 0.1 m/day.

关键词： Mathematical model radioactive tracers polychlorinated biphenyls suspended solids

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Attributional life cycle assessment of recycling and disposal strategies for construction and demolition waste

Cleaner Environmental Systems

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Cleaner environmental Systems 2025年 18卷

作者： Qudsia Kanwal Guochang Xu Ziad Gari Ream S. Alhusainan Sami G. Al-Ghamdi Environmental Science and Engineering Program Biological and Environmental Science and Engineering Division King Abdullah University of Science and Technology Thuwal 23955-6900 Saudi Arabia KAUST Climate and Livability Initiative King Abdullah University of Science and Technology Thuwal 23955-6900 Saudi Arabia Material Cycles Division National Institute for Environmental Studies Onogawa 16-2 Tsukuba 305-8506 Japan

The management of Construction and Demolition Waste (CDW) poses significant environmental challenges in Saudi Arabia, exacerbated by rapid urbanization and the Giga Projects under Vision 2030. This study presents a Life Cycle Assessment (LCA) of CDW management practices across seventeen municipalities, providing the first region-specific evaluation of environmental impacts using comprehensive data. By integrating primary and secondary data from local sources, Ecoinvent 3.91, and GaBi Sphera, the study evaluates key CDW disposal methods: sanitary landfilling, incineration, and recycling. The findings reveal that advanced recycling infrastructure (e.g., compactor trucks, recycling facilities) significantly reduces non-renewable energy use, Global Warming Potential (GWP), and downstream emissions, particularly in high CDW-generating regions like Riyadh and Jeddah. Notably, recycling achieves a GWP reduction of up to 75 million kg CO 2 -eq annually for key materials like mixed soil and concrete. Furthermore, the study contributes to global CDW management literature by presenting a replicable LCA framework that can be applied to other rapidly urbanizing economies facing similar waste management challenges. This framework offers valuable insights for policymakers, urban planners, and researchers seeking to develop sustainable CDW management strategies aligned with circular economy principles and international sustainability goals.

关键词： Construction waste recycling Climate change mitigation Waste valorization Sustainable infrastructure Giga projects

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Machine Learning Modeling for Hydrolysis Recycling of Pet Waste

SSRN

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SSRN 2025年

作者： Li, Jie Pan, Lanjia Abedsoltan, Hossein Wang, Hailong Liu, Taiyang Yuan, Xiangzhou Ok, Yong Sik Wang, Yin State Key Laboratory for Ecological Security of Regions and Cities Institute of Urban Environment Chinese Academy of Sciences Xiamen361021 China State Key Laboratory of Advanced Environmental Technology Institute of Urban Environment Chinese Academy of Sciences Xiamen361021 China University of Chinese Academy of Sciences Beijing100049 China Sustainable Waste Management Program Division of Environmental Science and Ecological Engineering Korea University Seoul02841 Korea Republic of Ministry of Education of Key Laboratory of Energy Thermal Conversion and Control School of Energy and Environment Southeast University Nanjing210096 China Department of Chemical Engineering The University of Toledo ToledoOH43607 United States Linda and Bipin Doshi Department of Chemical and Biochemical Engineering Missouri University of Science and Technology RollaMO65401 United States

Hydrolysis of polyethylene terephthalate (PET) into terephthalic acid (TPA) is one key approach for waste PET recycling. However, achieving an in-depth understanding in PET hydrolysis remains challenging. Herein, we employed machine learning (ML) methods to interpret the PET conversion with a dataset compiled, containing 942 data points and rich hydrolysis factors of PET-related information, heating type, acid/base catalyst (ABC), organic solvent (OS), co-solvent, phase transfer catalyst (PTC), and operational condition. A Neural Network model was found to be the best for predicting PET conversion, with a testing R2 and RMSE of 0.93 and 8.45%. The model-based interpretation suggested that operational conditions accounted for 45% of importance, followed by ABC (19%), OS (12%), and PTC (12%). Furthermore, hydrolysis time, temperature, and ABC concentration were identified as the top-three factors positively influencing PET conversion. This work facilitates the catalyst and process optimization for PET hydrolysis to promote the plastic circular economy. © 2025, The Authors. All rights reserved.

关键词： Transfer learning

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Electrochemical improvement of methane production via surface engineering of graphitic cathodes in anaerobic sequential batch reactors

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Journal of environmental Management 2025年 387卷 125826页

作者： Smruti Ranjan Dash Hyungmin Choi Jae Keun Song Dayoung Ko Changsoo Lee Jeonghwan Kim Department of Environmental Engineering Program of Environmental and Polymer Engineering Inharo-100 Michuhol-gu Incheon Republic of Korea Department of Civil Urban Earth and Environmental Engineering Ulsan National Institute of Science and Technology (UNIST) Ulsan 44919 Republic of Korea Graduate School of Carbon Neutrality Ulsan National Institute of Science and Technology (UNIST) Ulsan 44919 Republic of Korea

Five anaerobic sequential batch reactors (SBR), SBR 1−SBR 5 run in parallel were examined for biogas output trends under varying hydraulic retention times (HRT). SBR 1 was run without biomass for 1 month to study electrode stability and the effect of applied potential on sodium dodecyl sulfate (SDS) degradation. Polyaniline (PANI/Graphite) modification in reactors SBR 4 and iron-coated PANI (Fe-PANI/Graphite) in SBR 5 increased biogas production by almost 2.5 times compared to SBR 2 without electrodes. SBR 3 equipped with unmodified graphite rods was used as a control for cathode modifications. By decreasing HRT, cumulative methane production increased to 280 and 320 mL at 72 h and 350 and 500 mL at 48 h. Compared to SBR 2, an electric field increased daily biogas production. Methane composition in SBR 5 increased from 44% at 96-h to 71% at 48-h HRT after 30 days. SBR 4 recovered within 7 days after HRT modifications reduced methane output. The methane yield increased significantly with electric current in SBR 3 (2.6 times), SBR 4 (5.4 times), and SBR 5 (7.4 times). The effluent total organic carbon was stabilized at 15 mg/L for SBR 2 and SBR 3 and improved to below 5 mg/L for SBR 4 and SBR 5 during reactor operation. SBR 5, equipped with an Fe-PANI/Graphite cathode showing the lowest charge transfer resistance, developed distinct microbial community structures in both anodic and cathodic biofilms, compared to the other electrically assisted SBRs.

关键词： Anaerobic sequential batch reactors Bio-electrochemical system Biogas production Cathode modification Electric field application

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Cover Feature: Compartmentalized Sesquiterpenoid Biosynthesis and Functionalization in theChlamydomonas reinhardtiiPlastid (ChemBioChem 5/2025)

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ChemBioChem 2025年第5期26卷

作者： Sergio Gutiérrez Sebastian Overmans Gordon B. Wellman Kyle J. Lauersen Bioengineering Program Biological Environmental Sciences and Engineering Division (BESE) King Abdullah University of Science and Technology (KAUST) Thuwal Saudi Arabia

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Ag-decorated 3D flower-like Bi_(2)MoO_(6)/rGO with boosted photocatalytic performance for removal of organic pollutants

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Rare Metals 2021年第5期40卷 1086-1098页

作者： Xin Liu Wei-Ya Huang Qin Zhou Xi-Rong Chen Kai Yang Dan Li Dionysios D.Dionysiou Faculty of Materials Metallurgical and ChemistryJiangxi University of Science and TechnologyGanzhou 341000China Environmental Engineering and Science Program Department of Chemical and Environmental EngineeringUniversity of CincinnatiCincinnatiOH 45221-0012USA College of Science HealthEngineering and EducationMurdoch UniversityMurdoch 6150Australia

A series of unique 3D flower-like Bi_(2)MoO_(6)(BMO)/reduced graphene oxide(rGO)heterostructured composites decorated with varying amounts of Ag nanoparticles(NPs)were *** morphological characteristics,structural features,energy band structures and photoelectrochemical properties were systematically *** the Ag/BMO/rGO ternary composites(AgBGy;y=1%,2%and 3%)demonstrated greater photocatalytic activity towards efficient removal of our selected organic models[methyl orange(MO),rhodamine B(RhB)and phenol],as compared with the BMO/rGO binary composites(BG-x;x=0.25,2,4 and 5).Particularly,AgBG-2%,which was synthesized with the addition of 2 wt% rGO and 2 wt%Ag in BMO,possessed superior photocatalytic *** fitted rate constants(k)for the photocatalytic degradation of RhB,MO and phenol using AgBG-2% were estimated to be 0.0286,0.0301 and 0.0165 min^(-1),respectively,which were over one order of magnitude greater than those obtained using pure *** factors may contribute to the observed enhancement,including greater specific surface area,enhanced light absorption,promoted spatial separation of electronhole(e^(-)-h^(+))pairs and their suppressed recombination,especially benefiting from the synergistic effects among BMO,rGO and Ag *** work suggests that the rational design of BMO/rGO/Ag ternary composite was an effective strategy to boost the photocatalytic activity of the resulting catalyst towards the highly efficient removal of organic pollutants from water.

关键词： Bi_(2)MoO_(6) Reduced graphene oxide Ag nanoparticles 3D flower-like morphology Photocatalytic degradation

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