基于过硫酸盐-铁体系从酸性溶液中去除氧化喹啉的机理研究
A study on the mechanism of oxidized quinoline removal from acid solutions based on persulfate-iron systems.
作者信息
Zhang Zhichun, Yue Xiuping, Duan Yanqing, Rao Zhu
机构信息
College of Environment Science and Engineering, Taiyuan University of Technology Taiyuan 030024 China
Environmental Organic Geochemistry, Key Laboratory of Eco-Geochemical, Ministry of Land and Resources, National Research Center for Geoanalysis Beijing China.
出版信息
RSC Adv. 2020 Mar 27;10(21):12504-12510. doi: 10.1039/c9ra10556e. eCollection 2020 Mar 24.
Quinoline (Qu) and its derivatives have been widely regarded as hazardous pollutants in the world because of their acute toxicity to humans and animals, and potential carcinogenic risks. In this study, a novel sulfate radical system co-activated by ferrous and ZVI was developed to remove Qu from acidic solutions. The optimal ratio of ferrous and ZVI in the system and the mechanism of Qu removal from acidic solutions are also explored. The ZVI can initiate activation using hydrogen ions, which are released from the reaction of Fe, organics and PS in acidic solutions. This may dramatically improve the overall removal efficiency of Qu. The results indicated that the initial removal rate of Qu increases from 85.8% to 92.9%. The cleavage pathway of Qu is speculated by Frontier molecular orbital (FMO) theory and verified by GC/MS analysis.
喹啉（Qu）及其衍生物因其对人类和动物的急性毒性以及潜在的致癌风险，在全球范围内被广泛视为有害污染物。在本研究中，开发了一种由亚铁和零价铁共同激活的新型硫酸根自由基体系，用于从酸性溶液中去除喹啉。还探讨了体系中亚铁与零价铁的最佳比例以及从酸性溶液中去除喹啉的机制。零价铁可以利用氢离子引发活化，这些氢离子是由铁、有机物和过硫酸盐在酸性溶液中的反应释放出来的。这可能会显著提高喹啉的整体去除效率。结果表明，喹啉的初始去除率从85.8%提高到了92.9%。通过前沿分子轨道（FMO）理论推测了喹啉的裂解途径，并通过气相色谱/质谱（GC/MS）分析进行了验证。
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