Bi2O3/rGO/TiO2 catalytic membrane for advanced treatment of secondary effluent: Insights into EfOM degradation and membrane fouling alleviation

IF 6.3 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering Pub Date : 2025-07-26 DOI:10.1016/j.jwpe.2025.108399

Zhiwei Zhou , Junyan Chen , Haikuan Yu , Yuantian Zhao , Xing Li , Jiawei Ren

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Abstract

Secondary effluent organic matter (EfOM) significantly contributes to membrane fouling in ultrafiltration (UF) systems, which limits their broader use in municipal wastewater recycle. A modified ceramic ultrafiltration membrane (MCUM) was synthesized via vacuum filtration and thermal treatment and then activated under ultraviolet (UV) irradiation. The results indicated that the MCUM-2.88 exhibited the most excellent removal of EfOM, effectively retained high molecular weight (MW) proteinaceous substances, and converted medium MW humic-like compounds into lower MW derivatives. Through parallel factor analysis in conjunction with the self-organizing map algorithm, it was observed that the MCUM primarily degraded aromatic, high MW fluorescent components, while tryptophan-like substances remained as dominant residues due to their resistance to photodegradation. Additionally, the improved surface roughness and hydrophilicity of the MCUM facilitated fouling mitigation by strengthening interfacial repulsion, which diminished foulant adhesion. The fouling mechanism transitioned from complete and intermediate blocking to predominantly intermediate blocking, accompanied by a reduction in gel layer fouling. Consequently, the reversible fouling resistance of the MCUM was reduced by 76.8 %, and the irreversible resistance by 34.3 %, markedly enhancing antifouling performance. The results underscore the effectiveness of MCUM in advanced municipal wastewater treatment, showcasing enhanced antifouling performance and strong potential for sustainable water reuse applications.

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Bi2O3/rGO/TiO2催化膜深度处理二级出水：EfOM降解及膜污染缓解研究

二次出水有机物（EfOM）对超滤（UF）系统的膜污染起着重要的作用，这限制了超滤（UF）系统在城市污水回收中的广泛应用。通过真空过滤和热处理制备了改性陶瓷超滤膜，并在紫外照射下活化。结果表明，MCUM-2.88对EfOM的去除效果最好，能有效保留高分子量的蛋白质类物质，并能将中分子量腐殖质类化合物转化为低分子量的衍生物。通过平行因子分析结合自组织图谱算法，发现MCUM主要降解芳香、高MW荧光成分，而色氨酸样物质因其耐光降解而保持优势残基地位。此外，MCUM改善了表面粗糙度和亲水性，通过增强界面排斥力，减少了污染物的粘附，从而促进了污染的缓解。结垢机制从完全和中间阻塞过渡到主要的中间阻塞，并伴有凝胶层结垢的减少。结果表明，MCUM的可逆阻垢性能降低了76.8%，不可逆阻垢性能降低了34.3%，显著提高了防污性能。结果强调了MCUM在高级城市污水处理中的有效性，展示了增强的防污性能和可持续水回用应用的强大潜力。

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来源期刊

Journal of water process engineering Biochemistry, Genetics and Molecular Biology-Biotechnology

CiteScore

10.70

自引率

8.60%

发文量

846

审稿时长

24 days

期刊介绍： The Journal of Water Process Engineering aims to publish refereed, high-quality research papers with significant novelty and impact in all areas of the engineering of water and wastewater processing . Papers on advanced and novel treatment processes and technologies are particularly welcome. The Journal considers papers in areas such as nanotechnology and biotechnology applications in water, novel oxidation and separation processes, membrane processes (except those for desalination) , catalytic processes for the removal of water contaminants, sustainable processes, water reuse and recycling, water use and wastewater minimization, integrated/hybrid technology, process modeling of water treatment and novel treatment processes. Submissions on the subject of adsorbents, including standard measurements of adsorption kinetics and equilibrium will only be considered if there is a genuine case for novelty and contribution, for example highly novel, sustainable adsorbents and their use: papers on activated carbon-type materials derived from natural matter, or surfactant-modified clays and related minerals, would not fulfil this criterion. The Journal particularly welcomes contributions involving environmentally, economically and socially sustainable technology for water treatment, including those which are energy-efficient, with minimal or no chemical consumption, and capable of water recycling and reuse that minimizes the direct disposal of wastewater to the aquatic environment. Papers that describe novel ideas for solving issues related to water quality and availability are also welcome, as are those that show the transfer of techniques from other disciplines. The Journal will consider papers dealing with processes for various water matrices including drinking water (except desalination), domestic, urban and industrial wastewaters, in addition to their residues. It is expected that the journal will be of particular relevance to chemical and process engineers working in the field. The Journal welcomes Full Text papers, Short Communications, State-of-the-Art Reviews and Letters to Editors and Case Studies