Mono-ethanolamine breakdown by UV/hydrogen peroxide via MEA photolysis: kinetics, energy rate/order and degradation efficiency for mono-ethanolamine wastewater treatment

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-07-09 DOI:10.1007/s43153-024-00479-3

Atif Khan, Saima Yasin, Hamayoun Mahmood, Tanveer Iqbal

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Abstract

The ultraviolet light combined with hydrogen peroxide (UV/H₂O₂) was applied to break down mono-ethanolamine (MEA) in an aqueous solution. The coupled UV/H₂O₂ advanced oxidation process (AOP) was primarily responsible for the breakdown of MEA, with pseudo-first-order reaction kinetics. It was discovered that the reaction factors like MEA and H₂O₂ initial dosages affected reaction rates and MEA removal efficiency. The maximum removal efficiency was determined to be 77.35%. The hydroxyl ion (•OH) radical is primarily accountable for breaking down MEA in an aqueous environment. The energy consumed per reaction order calculations are performed by considering of the concentration factor of maximum degradation, in conjunction with the intensity of UV light. Overall, this work provides useful kinetic data that may be applied to the creation of an effective remediation strategy for MEA effluents.

Graphical abstract

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紫外线/过氧化氢通过 MEA 光解分解单乙醇胺：用于单乙醇胺废水处理的动力学、能率/阶次和降解效率

紫外线和过氧化氢（UV/H2O2）被用来分解水溶液中的单乙醇胺（MEA）。紫外线/过氧化氢耦合高级氧化过程（AOP）是分解 MEA 的主要过程，其反应动力学为假一阶反应。研究发现，MEA 和 H2O2 初始剂量等反应因素会影响反应速率和 MEA 去除效率。经测定，最大去除率为 77.35%。在水环境中，羟基离子 (-OH) 自由基主要负责分解 MEA。在计算每个反应阶次所消耗的能量时，考虑了最大降解浓度因子和紫外线强度。总之，这项研究提供了有用的动力学数据，可用于制定有效的 MEA 污水修复策略。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.