Gradient purification of surface water and ultrafiltration membrane fouling mitigation based on Fe(VI) multifunctional integration characteristics: Is a sedimentation unit necessary?

IF 11.4 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Water Research Pub Date : 2025-03-15 DOI:10.1016/j.watres.2025.123508

Kunyu Chen , Jie Wang , Xiaojiang Huang , Ruimin Mu , Congwei Luo , Daoji Wu , Jing Liu , Jinsuo Lu , Xiaoxiang Cheng

{"title":"Gradient purification of surface water and ultrafiltration membrane fouling mitigation based on Fe(VI) multifunctional integration characteristics: Is a sedimentation unit necessary?","authors":"Kunyu Chen , Jie Wang , Xiaojiang Huang , Ruimin Mu , Congwei Luo , Daoji Wu , Jing Liu , Jinsuo Lu , Xiaoxiang Cheng","doi":"10.1016/j.watres.2025.123508","DOIUrl":null,"url":null,"abstract":"<div><div>Ferrate (Fe(VI)) can provide oxidation and in-situ coagulation/adsorption for the removal of emerging contaminants and natural organic matter, and can be used in conjunction with ultrafiltration (UF) membrane to enhance the removal of composite contaminants and mitigate UF membrane fouling. Based on the Fe(VI) multifunctional integration characteristics, the study objectively and comprehensively verified the gradient purification of surface water and the UF membrane fouling mitigation by Fe(VI)-UF and sulfite (S(IV)) activated Fe(VI) (S(IV)/Fe(VI))-UF, elucidated the effect of sedimentation unit on the UF mechanism and the membrane fouling behaviors, and revealed the free energy changes throughout the UF process. The experimental results demonstrated that S(IV)/Fe(VI)-UF showed superior purification performance and UF membrane fouling mitigation than Fe(VI)-UF. S(IV)/Fe(VI)-UF achieved removals of sulfamethoxazole, DOC, and UV<sub>254</sub> up to 77.73 %, 61.86 %, and 86.33 %, and was able to significantly mitigate UF membrane fouling by prolonging the transition stage and positively shifting the interfacial free energy. Innovatively, the absence of a sedimentation unit was found to adversely affect the initial stages of Fe(VI)-UF and S(IV)/Fe(VI)-UF by lowering the energy barriers, while negligibly affecting cake filtration. Additionally, the water treatment cost of S(IV)/Fe(VI) was 0.3 yuan per ton, indicating notable economic benefits and engineering potential. While deepening the understanding of Fe(VI) multifunctional integration characteristics, the above results provided theoretical and data support for S(IV)/Fe(VI)-UF and Fe(VI)-UF treatment of surface water, and enriched the application scenarios of Fe(VI)-related technologies.</div></div>","PeriodicalId":443,"journal":{"name":"Water Research","volume":"280 ","pages":"Article 123508"},"PeriodicalIF":11.4000,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Water Research","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S004313542500421X","RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, ENVIRONMENTAL","Score":null,"Total":0}

引用次数: 0

Abstract

Ferrate (Fe(VI)) can provide oxidation and in-situ coagulation/adsorption for the removal of emerging contaminants and natural organic matter, and can be used in conjunction with ultrafiltration (UF) membrane to enhance the removal of composite contaminants and mitigate UF membrane fouling. Based on the Fe(VI) multifunctional integration characteristics, the study objectively and comprehensively verified the gradient purification of surface water and the UF membrane fouling mitigation by Fe(VI)-UF and sulfite (S(IV)) activated Fe(VI) (S(IV)/Fe(VI))-UF, elucidated the effect of sedimentation unit on the UF mechanism and the membrane fouling behaviors, and revealed the free energy changes throughout the UF process. The experimental results demonstrated that S(IV)/Fe(VI)-UF showed superior purification performance and UF membrane fouling mitigation than Fe(VI)-UF. S(IV)/Fe(VI)-UF achieved removals of sulfamethoxazole, DOC, and UV₂₅₄ up to 77.73 %, 61.86 %, and 86.33 %, and was able to significantly mitigate UF membrane fouling by prolonging the transition stage and positively shifting the interfacial free energy. Innovatively, the absence of a sedimentation unit was found to adversely affect the initial stages of Fe(VI)-UF and S(IV)/Fe(VI)-UF by lowering the energy barriers, while negligibly affecting cake filtration. Additionally, the water treatment cost of S(IV)/Fe(VI) was 0.3 yuan per ton, indicating notable economic benefits and engineering potential. While deepening the understanding of Fe(VI) multifunctional integration characteristics, the above results provided theoretical and data support for S(IV)/Fe(VI)-UF and Fe(VI)-UF treatment of surface water, and enriched the application scenarios of Fe(VI)-related technologies.

Abstract Image

查看原文本刊更多论文

基于Fe（VI）多功能集成特性的地表水梯度净化和超滤膜污染缓解：是否需要沉淀装置？

高铁酸盐（Fe(VI)）可以提供氧化和原位混凝/吸附，以去除新出现的污染物和天然有机物，并且可以与超滤（UF）膜结合使用，以增强对复合污染物的去除，减轻UF膜污染。基于Fe（VI）的多功能集成特性，客观全面地验证了Fe(VI)-UF和亚硫酸盐（S(IV)）活化Fe(VI) (S(IV)/Fe(VI))-UF对地表水的梯度净化和UF膜污染的缓解作用，阐明了沉降装置对UF机理和膜污染行为的影响，揭示了整个UF过程中自由能的变化。实验结果表明，S(IV)/Fe(VI)-UF具有比Fe(VI)-UF更好的净化性能和UF膜污染缓解效果。S(IV)/Fe(VI)-UF对磺胺甲恶唑、DOC和UV254的去除率分别高达77.73%、61.86%和86.33%，并通过延长过渡阶段和正向转移界面自由能，显著缓解UF膜污染。创新的是，没有沉淀装置会降低能量垒，从而对Fe(VI)-UF和S(IV)/Fe(VI)-UF的初始阶段产生不利影响，而对滤饼过滤的影响可以忽略不计。此外，S(IV)/Fe（VI）的水处理成本为0.3元/吨，具有显著的经济效益和工程潜力。上述结果在加深对Fe（VI）多功能集成特性认识的同时，为S(IV)/Fe(VI)-UF和Fe(VI)-UF处理地表水提供了理论和数据支持，丰富了Fe（VI）相关技术的应用场景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Water Research 环境科学-工程：环境

CiteScore

20.80

自引率

9.40%

发文量

1307

审稿时长

38 days

期刊介绍： Water Research, along with its open access companion journal Water Research X, serves as a platform for publishing original research papers covering various aspects of the science and technology related to the anthropogenic water cycle, water quality, and its management worldwide. The audience targeted by the journal comprises biologists, chemical engineers, chemists, civil engineers, environmental engineers, limnologists, and microbiologists. The scope of the journal include: •Treatment processes for water and wastewaters (municipal, agricultural, industrial, and on-site treatment), including resource recovery and residuals management; •Urban hydrology including sewer systems, stormwater management, and green infrastructure; •Drinking water treatment and distribution; •Potable and non-potable water reuse; •Sanitation, public health, and risk assessment; •Anaerobic digestion, solid and hazardous waste management, including source characterization and the effects and control of leachates and gaseous emissions; •Contaminants (chemical, microbial, anthropogenic particles such as nanoparticles or microplastics) and related water quality sensing, monitoring, fate, and assessment; •Anthropogenic impacts on inland, tidal, coastal and urban waters, focusing on surface and ground waters, and point and non-point sources of pollution; •Environmental restoration, linked to surface water, groundwater and groundwater remediation; •Analysis of the interfaces between sediments and water, and between water and atmosphere, focusing specifically on anthropogenic impacts; •Mathematical modelling, systems analysis, machine learning, and beneficial use of big data related to the anthropogenic water cycle; •Socio-economic, policy, and regulations studies.