Selenium treatment via integrating flow electrode capacitive deionization (FCDI) and bio-electrochemical systems (BES)

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

Water Research Pub Date : 2024-11-23 DOI:10.1016/j.watres.2024.122844

Adriana Riveros, Benhur K. Asefaw, Qingshi Wang, Tahir Maqbool, Youneng Tang, Daqian Jiang

{"title":"Selenium treatment via integrating flow electrode capacitive deionization (FCDI) and bio-electrochemical systems (BES)","authors":"Adriana Riveros, Benhur K. Asefaw, Qingshi Wang, Tahir Maqbool, Youneng Tang, Daqian Jiang","doi":"10.1016/j.watres.2024.122844","DOIUrl":null,"url":null,"abstract":"Selenium pollution in aquatic environments is a major concern globally and there is a gap in effective treatment technologies. In this study, we explored a novel approach combining flow-electrode capacitive deionization (FCDI) with bio-electrochemical systems (BES) for removal and reduction of selenate and selenite ions within a single reactor. Our integrated system was electricity-driven, eliminating chemical usage. Up to 76% selenium removal from the waste streams was achieved, followed by up to 66% and 54% reduction of selenate and selenite to elemental selenium respectively. The addition of acetate, a carbon source, enhanced selenate reduction by 14% but lowered selenite reduction by 21%, highlighting the substrate-dependent and bio-electrochemical-driven nature of selenate and selenite reduction respectively. Metagenomic sequencing revealed that Geobacter sulfurreducens and Pseudomonas stutzeri two known Se-reducing species, likely contributed both selenite and selenate reduction through up-regulating functional genes related to sulfide reductase, fumarate reductase, and multi-heme c-type cytochromes. Thauera spp. and Alishewanella spp., previously not identified in selenium reduction, were likely involved in selenite reduction via up-regulation of genes related to sulfite reductase and selenium reductase.","PeriodicalId":443,"journal":{"name":"Water Research","volume":"10 1","pages":""},"PeriodicalIF":11.4000,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Water Research","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1016/j.watres.2024.122844","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

Selenium pollution in aquatic environments is a major concern globally and there is a gap in effective treatment technologies. In this study, we explored a novel approach combining flow-electrode capacitive deionization (FCDI) with bio-electrochemical systems (BES) for removal and reduction of selenate and selenite ions within a single reactor. Our integrated system was electricity-driven, eliminating chemical usage. Up to 76% selenium removal from the waste streams was achieved, followed by up to 66% and 54% reduction of selenate and selenite to elemental selenium respectively. The addition of acetate, a carbon source, enhanced selenate reduction by 14% but lowered selenite reduction by 21%, highlighting the substrate-dependent and bio-electrochemical-driven nature of selenate and selenite reduction respectively. Metagenomic sequencing revealed that Geobacter sulfurreducens and Pseudomonas stutzeri two known Se-reducing species, likely contributed both selenite and selenate reduction through up-regulating functional genes related to sulfide reductase, fumarate reductase, and multi-heme c-type cytochromes. Thauera spp. and Alishewanella spp., previously not identified in selenium reduction, were likely involved in selenite reduction via up-regulation of genes related to sulfite reductase and selenium reductase.

Abstract Image

查看原文本刊更多论文

通过整合流动电极电容去离子（FCDI）和生物电化学系统（BES）进行硒处理

水生环境中的硒污染是全球关注的一个主要问题，而有效的处理技术尚属空白。在这项研究中，我们探索了一种新方法，将流动电极电容式去离子（FCDI）与生物电化学系统（BES）相结合，在一个反应器中去除和还原硒酸根离子和亚硒酸根离子。我们的集成系统由电力驱动，无需使用化学品。废物流中硒的去除率高达 76%，随后硒酸盐和亚硒酸盐分别有高达 66% 和 54% 的比例被还原为元素硒。添加碳源醋酸盐可将硒酸盐还原率提高 14%，但将亚硒酸盐还原率降低 21%，这表明硒酸盐和亚硒酸盐还原分别具有基质依赖性和生物电化学驱动性。元基因组测序显示，Geobacter sulfurreducens 和 Pseudomonas stutzeri 这两种已知的硒还原物种可能通过上调与硫化物还原酶、富马酸还原酶和多血红素 c 型细胞色素有关的功能基因，促进了亚硒酸盐和硒酸盐的还原。以前未发现的 Thauera spp.和 Alishewanella spp.参与了亚硒酸盐的还原，它们可能通过上调亚硫酸盐还原酶和硒还原酶的相关基因参与了亚硒酸盐的还原。

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.