Article(id=1314917495358713919, tenantId=1146029695717560320, journalId=1234093305789726721, issueId=1314917454552327005, articleNumber=null, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1731686400000, receivedDateStr=2024-11-16, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1791430360878, onlineDateStr=2026-10-08, pubDate=1752940800000, pubDateStr=2025-07-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1791430360878, onlineIssueDateStr=2026-10-08, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1791430360878, creator=13701087609, updateTime=1791430360878, updator=13701087609, issue=Issue{id=1314917454552327005, tenantId=1146029695717560320, journalId=1234093305789726721, year='2025', volume='45', issue='7', pageStart='3553', pageEnd='4144', issueExtLink='null', onlineDate='null', pubDate='1752940800000', pubDateStr='2025-07-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1791430351150, creator='13701087609', updateTime=1791431931754, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1314924084186669335, tenantId=1146029695717560320, journalId=1234093305789726721, issueId=1314917454552327005, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1314924084186669336, tenantId=1146029695717560320, journalId=1234093305789726721, issueId=1314917454552327005, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=3753, endPage=3761, ext={EN=ArticleExt(id=1314917495534874688, articleId=1314917495358713919, tenantId=1146029695717560320, journalId=1234093305789726721, language=EN, title=Biochar supported green synthesized nZVI modified with Artemisia arenaria to remove Cr(Ⅵ) from water, columnId=1234106386360103680, journalTitle=China Environmental Science, columnName=Water Pollution Control, runingTitle=null, highlight=null, articleAbstract=

A composite material (CBC-nZVI) was synthesized by green reduction of Artemisia arenaria extract to produce nanoscale zero-valent iron (nZVI), which was subsequently loaded onto biochar derived from waste corn straw. This composite was employed for the removal of hexavalent chromium (Cr(Ⅵ)) from aqueous solutions. The study investigated the adsorption kinetics and thermodynamics, as well as the effects of pH, dosage, and coexisting ions on Cr(Ⅵ) removal by CBC-nZVI. The material was characterized using SEM, FTIR, XRD, and XPS to elucidate the Cr(Ⅵ) removal mechanisms. The adsorption kinetics of Cr(Ⅵ) onto CBC-nZVI fit best with the Elovich model, indicating that intraparticle diffusion was the rate-controlling step. The adsorption isotherm fitted the Freundlich model, indicating that the adsorption was a spontaneous endothermic and entropy-increasing process. The Cr(Ⅵ) removal efficiency improved with increasing reaction temperature, material dosage, and solution acidity. Under optimal conditions (298K, pH 2, and dosage of 1.0g/L), 100% removal efficiency was achieved for a Cr(Ⅵ) concentration of 30mg/L. The presence of coexisting cations or anions in the solution inhibited the removal of Cr(Ⅵ) by the CBC-nZVI to varying degrees, with the order of inhibition being Cd²⁺>Mg²⁺>Ca²⁺>Cu^2-, and CO₃^2->Cl^->NO₃^->SO₄^2-. The results of characterization of CBC-nZVI and batch adsorption experiments showed that the Cr(Ⅵ) removal mechanism by CBC-nZVI involves electrostatic adsorption, chemical reduction, functional group complexation, and precipitation. nZVI reduces adsorbed Cr(Ⅵ) to Cr(Ⅲ), which is then removed through surface complexation with functional groups and co-precipitation with Fe(Ⅲ) as Cr(Ⅲ)-Fe(Ⅲ) complexes. The loaded nZVI and CBC exhibited a synergistic effect in the removal of Cr(Ⅵ) by the composite material.

, authors=Jing-ru DIAO^{1, 2, *}, Hai-ling ZHU¹, Bo-feng SHEN¹, Meng-ting ZHAO¹, Yan-zi ZHOU¹, Feng-feng MA^{1, 2}, Yu-feng JIANG¹, authorsList=Jing-ru DIAO, Hai-ling ZHU, Bo-feng SHEN, Meng-ting ZHAO, Yan-zi ZHOU, Feng-feng MA, Yu-feng JIANG, authorCompany=null, correspAuthors=Jing-ru DIAO, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1314917495878807617, articleId=1314917495358713919, tenantId=1146029695717560320, journalId=1234093305789726721, language=CN, title=沙蒿绿色合成nZVI改性生物炭去除水中Cr（Ⅵ）, columnId=1234106386565624579, journalTitle=中国环境科学, columnName=水污染与控制, runingTitle=null, highlight=null, articleAbstract=

利用沙蒿和玉米秸秆废弃物，通过沙蒿提取液绿色还原得到纳米零价铁（nZVI）并负载在玉米秸秆生物炭上，得到复合材料CBC-nZVI，用以去除水中的Cr（Ⅵ）．考察了吸附动力学和热力学特征，以及pH值、投加量和共存离子对CBC-nZVI去除Cr（Ⅵ）的影响；利用SEM、FTIR、XRD和XPS对材料进行表征，探究复合材料的除Cr（Ⅵ）机制．结果表明：CBC-nZVI对Cr（Ⅵ）的吸附动力学数据最适合用Elovich方程描述，颗粒内扩散为主要控速步骤；吸附等温线符合Freundlich模型，吸附为自发的吸热熵增过程．CBC-nZVI对Cr（Ⅵ）的去除率随反应温度、材料投加量和溶液酸度的升高而增大，在适宜条件（温度为298K、pH值为2、投加量1.0g/L）下对Cr（Ⅵ）（30mg/L）的去除率达100%；溶液中共存阳离子或阴离子均会不同程度地抑制吸附剂对Cr（Ⅵ）的去除，影响顺序分别为Cd²⁺>Mg²⁺>Ca²⁺>Cu²⁺，CO₃^2->Cl^->NO₃^->SO₄^2-．CBC-nZVI与Cr（Ⅵ）的反应机制主要包括静电吸附、化学还原、官能团吸附和沉淀吸附等过程．nZVI将吸附在材料上的Cr（Ⅵ）还原为Cr（Ⅲ），再通过表面官能团络合和形成Cr（Ⅲ）-Fe（Ⅲ）共沉淀的方式将其去除．负载后nZVI与CBC在复合材料去除Cr（Ⅵ）的过程中表现出协同作用．

, authors=刁静茹^{1, 2, *}, 祝海玲¹, 沈博峰¹, 赵梦婷¹, 周艳姿¹, 马锋锋^{1, 2}, 蒋煜峰¹, authorsList=刁静茹, 祝海玲, 沈博峰, 赵梦婷, 周艳姿, 马锋锋, 蒋煜峰, authorCompany=null, correspAuthors=刁静茹, authorNote=, correspAuthorsNote=, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=Q/ZLyiyPAIEaQw1bEku6aQ==, magXml=jf5Sh2hPIx6NV74IT5w7wg==, pdfUrl=null, pdf=h9JGF+Zhy0FqZR2d58p2kA==, pdfFileSize=1543361, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=NWofnjgu5KwiVHy54Av6xg==, mapNumber=null, fund=null)}, authors=[Author(id=1314917496281460809, tenantId=1146029695717560320, journalId=1234093305789726721, articleId=1314917495358713919, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=diaojr@qq.com, emailSecond=null, emailThird=null, correspondingAuthor=1, authorType=1, ext={EN=AuthorExt(id=1314917496369541196, tenantId=1146029695717560320, journalId=1234093305789726721, articleId=1314917495358713919, authorId=1314917496281460809, language=EN, stringName=Jing-ru DIAO, firstName=Jing-ru, middleName=null, lastName=DIAO, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=^{1, 2, *}, address=^1.School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
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^2.兰州交通大学，寒旱地区水资源综合利用教育部工程研究中心，甘肃 兰州 730070, bio={"content":"

刁静茹（1977-），女，山东平原人，副教授，博士，主要研究方向为污染控制化学．发表论文30余篇．diaojr@qq.com.

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刁静茹（1977-），女，山东平原人，副教授，博士，主要研究方向为污染控制化学．发表论文30余篇．diaojr@qq.com.

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