Electrocatalysis coupled super-stable mineralization for the efficient treatment of phosphorus containing plating wastewater

IF 4.1 2区 工程技术 Q2 ENGINEERING, CHEMICAL Chemical Engineering Science Pub Date : 2024-11-07 DOI:10.1016/j.ces.2024.120910
Zilong Li, Nuo Xu, Shihua Liu, Yawen Wang, Vishnu D. Rajput, Tatiana Minkina, Faying Fan, Wa Gao, Yufei Zhao
{"title":"Electrocatalysis coupled super-stable mineralization for the efficient treatment of phosphorus containing plating wastewater","authors":"Zilong Li, Nuo Xu, Shihua Liu, Yawen Wang, Vishnu D. Rajput, Tatiana Minkina, Faying Fan, Wa Gao, Yufei Zhao","doi":"10.1016/j.ces.2024.120910","DOIUrl":null,"url":null,"abstract":"The automotive, electronics, and aerospace sectors use electroless nickel plating (ENP) technology for surface treatment. Hypophosphite, a widely used reducing agent in ENP, generates large volumes of hypophosphate (H<sub>2</sub>PO<sub>2</sub><sup>-</sup>) and nickel ions (Ni<sup>2+</sup>) in its wastewater which poses potential risks to human health. However, it is a highly challenging task to remove and recycle the H<sub>2</sub>PO<sub>2</sub><sup>-</sup> and Ni<sup>2+</sup> from such wastewater. In this study, a novel electrocatalysis coupled super-stable mineralization process was developed for the treatment of phosphorus-containing ENP wastewater. The electrocatalytic system, utilizing commercial lead dioxide and stainless steel as the anode and cathode, separately, achieved remarkable results in simultaneously removing H<sub>2</sub>PO<sub>2</sub><sup>-</sup> and recycling valuable Ni<sup>2+</sup> ions from ENP wastewater, with a 99.1 % oxidation efficiency for H<sub>2</sub>PO<sub>2</sub><sup>-</sup> and a high recovery rate of 99.8 % for nickel. In order to meet industrial emission standards, layered double hydroxide (CaAl-LDH) and its calcined derivatives (CaAl-900) were employed as super-stable mineralizers for the further treatment of total phosphorus (TP) and residual Ni<sup>2+</sup> in the wastewater. The mechanism underlying the enhanced treatment of ENP wastewater was elucidated through free radical quenching experiments, revealed superoxide radicals (·O<sub>2</sub><sup>–</sup>) as the primary active species. It is noteworthy that the successful treatment of actual ENP wastewater was achieved, meeting standard discharge requirements. This study provides novel insights for achieving resource-efficient wastewater treatment and promoting environmentally friendly electroplating industries.","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":null,"pages":null},"PeriodicalIF":4.1000,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Engineering Science","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1016/j.ces.2024.120910","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0

Abstract

The automotive, electronics, and aerospace sectors use electroless nickel plating (ENP) technology for surface treatment. Hypophosphite, a widely used reducing agent in ENP, generates large volumes of hypophosphate (H2PO2-) and nickel ions (Ni2+) in its wastewater which poses potential risks to human health. However, it is a highly challenging task to remove and recycle the H2PO2- and Ni2+ from such wastewater. In this study, a novel electrocatalysis coupled super-stable mineralization process was developed for the treatment of phosphorus-containing ENP wastewater. The electrocatalytic system, utilizing commercial lead dioxide and stainless steel as the anode and cathode, separately, achieved remarkable results in simultaneously removing H2PO2- and recycling valuable Ni2+ ions from ENP wastewater, with a 99.1 % oxidation efficiency for H2PO2- and a high recovery rate of 99.8 % for nickel. In order to meet industrial emission standards, layered double hydroxide (CaAl-LDH) and its calcined derivatives (CaAl-900) were employed as super-stable mineralizers for the further treatment of total phosphorus (TP) and residual Ni2+ in the wastewater. The mechanism underlying the enhanced treatment of ENP wastewater was elucidated through free radical quenching experiments, revealed superoxide radicals (·O2) as the primary active species. It is noteworthy that the successful treatment of actual ENP wastewater was achieved, meeting standard discharge requirements. This study provides novel insights for achieving resource-efficient wastewater treatment and promoting environmentally friendly electroplating industries.

Abstract Image

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
电催化耦合超稳定矿化法高效处理含磷电镀废水
汽车、电子和航空航天领域使用化学镀镍(ENP)技术进行表面处理。次磷酸是 ENP 中广泛使用的还原剂,会在废水中产生大量次磷酸(H2PO2-)和镍离子(Ni2+),对人类健康构成潜在风险。然而,从此类废水中去除并回收 H2PO2- 和 Ni2+ 是一项极具挑战性的任务。本研究开发了一种新型电催化耦合超稳定矿化工艺,用于处理 ENP 含磷废水。该电催化系统分别利用商用二氧化铅和不锈钢作为阳极和阴极,在同时去除 ENP 废水中的 H2PO2- 和回收有价值的 Ni2+ 离子方面取得了显著效果,H2PO2- 的氧化效率达到 99.1%,镍的回收率高达 99.8%。为了达到工业排放标准,层状双氢氧化物(CaAl-LDH)及其煅烧衍生物(CaAl-900)被用作超稳定矿化剂,用于进一步处理废水中的总磷(TP)和残留 Ni2+。通过自由基淬灭实验阐明了ENP废水强化处理的机制,发现超氧自由基(-O2-)是主要的活性物种。值得注意的是,实际 ENP 废水的成功处理达到了标准排放要求。这项研究为实现资源节约型废水处理和促进环境友好型电镀工业提供了新的见解。
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
Chemical Engineering Science
Chemical Engineering Science 工程技术-工程:化工
CiteScore
7.50
自引率
8.50%
发文量
1025
审稿时长
50 days
期刊介绍: Chemical engineering enables the transformation of natural resources and energy into useful products for society. It draws on and applies natural sciences, mathematics and economics, and has developed fundamental engineering science that underpins the discipline. Chemical Engineering Science (CES) has been publishing papers on the fundamentals of chemical engineering since 1951. CES is the platform where the most significant advances in the discipline have ever since been published. Chemical Engineering Science has accompanied and sustained chemical engineering through its development into the vibrant and broad scientific discipline it is today.
期刊最新文献
High-fidelity modelling of unburnt coal flow in an industry-scale blast furnace using a hybrid CFD-DEM method The solid–liquid equilibrium behavior of ε-CL-20 in 10 pure solvents and its molecular mechanism Rapid solvent transport and tunable molecular sieving enabled by ultrathin alkyl-chain-engineered polyamide membranes A novel adsorptive membrane for rare earth recovery prepared by facile UV grafting using 3,3′, 4,4′-benzophenone tetracarboxylic acid (BTA) Ideal Co-NiO solid solution with excellent low-temperature propene catalytic combustion performance
×
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