Accelerated the continuous production of ROS at the concentrated alkaline solution driven by O2 microbubbles

IF 13.3 1区 工程技术 Q1 ENGINEERING, CHEMICAL Chemical Engineering Journal Pub Date : 2025-03-15 DOI:10.1016/j.cej.2025.161600
Wenbin Hu, Huiquan Li, Chenye Wang, Xinjuan Hou, Chanjuan Zhang, Hao Du, Jun Li
{"title":"Accelerated the continuous production of ROS at the concentrated alkaline solution driven by O2 microbubbles","authors":"Wenbin Hu, Huiquan Li, Chenye Wang, Xinjuan Hou, Chanjuan Zhang, Hao Du, Jun Li","doi":"10.1016/j.cej.2025.161600","DOIUrl":null,"url":null,"abstract":"Reactive oxygen species (ROS) play a central role in degrading many environmental pollutants and oxidizing low-valence metal ions due to their high oxidation potential and environmental sustainability. However, due to the influence of the solution coordination environment, it is always difficult to regulate the species and concentration of short-lived ROS. In this work, we first qualitative and quantified the ROS species including O<sub>2</sub><sup>•−</sup>, HO<sub>2</sub><sup>−</sup>, and •OH, with the concentrations as high as 147 μM. DFT calculation suggested that inducing O<sub>2</sub> molecule can intensify charge depletion around NaOH and then accelerate the single electron reduction of O<sub>2</sub>, where the concentration of ROS elevated from 0.12 mM to 5.34 mM after employing a fine-bubble diffuser to form O<sub>2</sub> microbubbles. Additionally, it was found the addition of Fe<sup>2+</sup>/Fe<sup>3+</sup> can regulate the formation of •OH and O<sub>2</sub><sup>•−</sup> by Fenton-like reactions and stabilize the concentration of O<sub>2</sub><sup>•−</sup> at 25.67 to 37.07 μM. Based on this, a micro-bubbles reactor was manufactured to increase the oxidation and leaching efficiency of low-valence V(III) and Cr(III) by 17.5 ∼ 41 times, realize the efficient recovery of V(V) and Cr(VI) from vanadium slag. This study provides a comprehensive ROS profile in concentrated alkaline solutions, establishing a foundation for innovative approaches to enhance, control, and apply ROS production","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"33 1","pages":""},"PeriodicalIF":13.3000,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Engineering Journal","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1016/j.cej.2025.161600","RegionNum":1,"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

Reactive oxygen species (ROS) play a central role in degrading many environmental pollutants and oxidizing low-valence metal ions due to their high oxidation potential and environmental sustainability. However, due to the influence of the solution coordination environment, it is always difficult to regulate the species and concentration of short-lived ROS. In this work, we first qualitative and quantified the ROS species including O2•−, HO2, and •OH, with the concentrations as high as 147 μM. DFT calculation suggested that inducing O2 molecule can intensify charge depletion around NaOH and then accelerate the single electron reduction of O2, where the concentration of ROS elevated from 0.12 mM to 5.34 mM after employing a fine-bubble diffuser to form O2 microbubbles. Additionally, it was found the addition of Fe2+/Fe3+ can regulate the formation of •OH and O2•− by Fenton-like reactions and stabilize the concentration of O2•− at 25.67 to 37.07 μM. Based on this, a micro-bubbles reactor was manufactured to increase the oxidation and leaching efficiency of low-valence V(III) and Cr(III) by 17.5 ∼ 41 times, realize the efficient recovery of V(V) and Cr(VI) from vanadium slag. This study provides a comprehensive ROS profile in concentrated alkaline solutions, establishing a foundation for innovative approaches to enhance, control, and apply ROS production

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
求助全文
约1分钟内获得全文 去求助
来源期刊
Chemical Engineering Journal
Chemical Engineering Journal 工程技术-工程:化工
CiteScore
21.70
自引率
9.30%
发文量
6781
审稿时长
2.4 months
期刊介绍: The Chemical Engineering Journal is an international research journal that invites contributions of original and novel fundamental research. It aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussions on new developments in chemical engineering. The journal welcomes papers that describe novel theory and its practical application, as well as those that demonstrate the transfer of techniques from other disciplines. It also welcomes reports on carefully conducted experimental work that is soundly interpreted. The main focus of the journal is on original and rigorous research results that have broad significance. The Catalysis section within the Chemical Engineering Journal focuses specifically on Experimental and Theoretical studies in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. These studies have industrial impact on various sectors such as chemicals, energy, materials, foods, healthcare, and environmental protection.
期刊最新文献
CO2 capture pilot campaign: Understanding solvent degradation of CESAR1 in cement plant operations Accelerated the continuous production of ROS at the concentrated alkaline solution driven by O2 microbubbles NaF-NaCl/graphite foam composites for high-temperature latent heat storage applications Two isostructural aluminum-based metal − organic frameworks with multiple polar sites for reversible NH3 capture Role of moisture on gas sorption capacity and kinetics of Coal: Novel experimental and modeling insights
×
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