Yun Chen , Jing Wei , Lina Wang , Xiaoyu Wang , Mengfang Chen , Wenying Zhang , Guodong Yuan , Shaopo Deng
{"title":"In-situ degradation of phenol using CuMgFe-LDO catalyst and assessment of its service life in the persulfate activation process","authors":"Yun Chen , Jing Wei , Lina Wang , Xiaoyu Wang , Mengfang Chen , Wenying Zhang , Guodong Yuan , Shaopo Deng","doi":"10.1016/j.jwpe.2023.103981","DOIUrl":null,"url":null,"abstract":"<div><p>Layered double oxides (LDOs) have been proven effective and reusable materials in removing phenols. However, the service life of LDOs in an application remains unclear. This study optimized the properties of CuMgFe-LDO and assessed its service life for in-situ groundwater remediation. Phenol degradation in CuMgFe-LDO-activated persulfate (PS) system with various groundwater matrix was analyzed. Results showed improved phenol degradation with increasing Cu content and calcination temperature in LDO production, with a decrease in degradation beyond a certain level of Cu. Phenol removal was slightly influenced by fulvic acid and sodium humate below 20.0 mg/L but strongly affected by 1.0 mmol/L of SO<sub>4</sub><sup>2−</sup> and HCO<sub>3</sub><sup>−</sup>. A high TOC removal of 80 % in all three recycled tests was found within 30 min, with intermediate products identified as benzoquinone, fumaric/maleic acid, and finally, oxalic and acetic acid. The CuMgFe-LDO showed demonstrated exemplary performance in a continuously flowing phenol and PS solution column, with a long service life of 12 days and low copper leaching (1.8 mg/L) at pH 6.55. This study supports the potential of the CuMgFe-LDO-activated PS system for remediating groundwater contaminated with phenolic compounds and mitigating acidification from PS use.</p></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"54 ","pages":"Article 103981"},"PeriodicalIF":6.7000,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of water process engineering","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2214714423005007","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Layered double oxides (LDOs) have been proven effective and reusable materials in removing phenols. However, the service life of LDOs in an application remains unclear. This study optimized the properties of CuMgFe-LDO and assessed its service life for in-situ groundwater remediation. Phenol degradation in CuMgFe-LDO-activated persulfate (PS) system with various groundwater matrix was analyzed. Results showed improved phenol degradation with increasing Cu content and calcination temperature in LDO production, with a decrease in degradation beyond a certain level of Cu. Phenol removal was slightly influenced by fulvic acid and sodium humate below 20.0 mg/L but strongly affected by 1.0 mmol/L of SO42− and HCO3−. A high TOC removal of 80 % in all three recycled tests was found within 30 min, with intermediate products identified as benzoquinone, fumaric/maleic acid, and finally, oxalic and acetic acid. The CuMgFe-LDO showed demonstrated exemplary performance in a continuously flowing phenol and PS solution column, with a long service life of 12 days and low copper leaching (1.8 mg/L) at pH 6.55. This study supports the potential of the CuMgFe-LDO-activated PS system for remediating groundwater contaminated with phenolic compounds and mitigating acidification from PS use.
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
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
