Remediation of bio-refinery wastewater containing organic and inorganic toxic pollutants by adsorption onto chitosan-based magnetic nanosorbent

IF 2.4 4区 环境科学与生态学 Q2 WATER RESOURCES Water Quality Research Journal Pub Date : 2020-02-01 DOI:10.2166/wqrj.2019.003
A. Kumar, Kongkona Saikia, Gerard Neeraj, H. Cabana, Vaidyanathan Kumar
{"title":"Remediation of bio-refinery wastewater containing organic and inorganic toxic pollutants by adsorption onto chitosan-based magnetic nanosorbent","authors":"A. Kumar, Kongkona Saikia, Gerard Neeraj, H. Cabana, Vaidyanathan Kumar","doi":"10.2166/wqrj.2019.003","DOIUrl":null,"url":null,"abstract":"The novelty of the current study deals with the application of magnetic nanosorbent, chitosan-coated magnetic nanoparticles (cMNPs), to be utilized for the management of lignocellulosic bio-refinery wastewater (LBW) containing three heavy metals and 26 phenolic compounds. The magnetic property of the adsorbent, confirmed by elemental and vibrating sample magnetometer analysis (saturation magnetization of 26.96 emu/g), allows easy separation of the particles in the presence of an external magnetic field. At pH 6.0, with optimized adsorbent dosage of 2.0 g/L and 90 min contact time, maximum removal of phenol (46.2%), copper (42.2%), chromium (18.7%) and arsenic (2.44%) was observed. The extent of removal of phenolic compounds was in the order: polysubstituted > di-substituted > mono-substituted > cresol > phenol. Overall, the adsorption capacity (qe) of cMNPs varies among the different contaminants in the following manner: copper (1.03 mg/g), chromium (0.20 mg/g), arsenic (0.04 mg/g) and phenol (0.56 mg/g). Post-adsorption, retrieving the cMNPs using an external magnetic field followed by single-step desorption via acid–base treatment is attractive for implementation in industrial settings. Reusability of the adsorbent was studied by recycling the cMNPs for five consecutive rounds of adsorption followed by desorption, at the end of which, cMNPs retained 20% of their initial adsorption capacity.","PeriodicalId":23720,"journal":{"name":"Water Quality Research Journal","volume":" ","pages":""},"PeriodicalIF":2.4000,"publicationDate":"2020-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2166/wqrj.2019.003","citationCount":"17","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Water Quality Research Journal","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.2166/wqrj.2019.003","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"WATER RESOURCES","Score":null,"Total":0}
引用次数: 17

Abstract

The novelty of the current study deals with the application of magnetic nanosorbent, chitosan-coated magnetic nanoparticles (cMNPs), to be utilized for the management of lignocellulosic bio-refinery wastewater (LBW) containing three heavy metals and 26 phenolic compounds. The magnetic property of the adsorbent, confirmed by elemental and vibrating sample magnetometer analysis (saturation magnetization of 26.96 emu/g), allows easy separation of the particles in the presence of an external magnetic field. At pH 6.0, with optimized adsorbent dosage of 2.0 g/L and 90 min contact time, maximum removal of phenol (46.2%), copper (42.2%), chromium (18.7%) and arsenic (2.44%) was observed. The extent of removal of phenolic compounds was in the order: polysubstituted > di-substituted > mono-substituted > cresol > phenol. Overall, the adsorption capacity (qe) of cMNPs varies among the different contaminants in the following manner: copper (1.03 mg/g), chromium (0.20 mg/g), arsenic (0.04 mg/g) and phenol (0.56 mg/g). Post-adsorption, retrieving the cMNPs using an external magnetic field followed by single-step desorption via acid–base treatment is attractive for implementation in industrial settings. Reusability of the adsorbent was studied by recycling the cMNPs for five consecutive rounds of adsorption followed by desorption, at the end of which, cMNPs retained 20% of their initial adsorption capacity.
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
壳聚糖基磁性纳米吸附剂吸附修复含有机和无机有毒污染物的生物炼油厂废水
本研究的新颖之处在于应用磁性纳米吸附剂,即壳聚糖包覆的磁性纳米颗粒(cMNPs),用于处理含有三种重金属和26种酚类化合物的木质纤维素生物炼油废水。通过元素和振动样品磁强计分析(26.96emu/g的饱和磁化强度)证实,吸附剂的磁性能允许在存在外部磁场的情况下容易地分离颗粒。在pH 6.0条件下,当吸附剂用量为2.0g/L,接触时间为90min时,苯酚(46.2%)、铜(42.2%)、铬(18.7%)和砷(2.44%)的去除率最高。酚类化合物的去除程度依次为:多取代>二取代>单取代>甲酚>苯酚。总的来说,cMNPs的吸附容量(qe)在不同污染物之间以以下方式变化:铜(1.03mg/g)、铬(0.20mg/g)、砷(0.04mg/g)和苯酚(0.56mg/g)。吸附后,使用外部磁场回收cMNP,然后通过酸碱处理进行一步解吸,这对于在工业环境中实施很有吸引力。吸附剂的可重复使用性是通过将cMNPs循环进行连续五轮吸附,然后进行解吸来研究的,在解吸结束时,cMNPs保留了其初始吸附容量的20%。
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 去求助
来源期刊
CiteScore
4.50
自引率
8.70%
发文量
0
期刊最新文献
Development and evaluation of filter for canal water potability Phosphorus removal and recovery from anaerobic bioreactor effluent using a batch electrocoagulation process A Fuzzy Inference System for enhanced groundwater quality assessment and index determination The risk of bacterial virulence in the face of concentrated river pollution Efficient removal of perfluorinated compounds with the polyamide nanofiltration membrane and membrane fouling resistance analysis
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1