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In-situ preparation of yeast-supported Fe0@Fe2O3 as peroxymonosulfate activator for enhanced degradation of tetracycline hydrochloride.
Li, Bin; Li, Chen-Xuan; Wang, Yan; Xu, Weiyi; Cui, Kangping; Zhan, Xinyuan; Deng, Rui; Zhang, Xing.
Afiliação
  • Li B; School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, China.
  • Li CX; School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, China; Key Laboratory on Nanominerals and Pollution Control of Higher Education Institutes, Hefei University of Technology, Hefei, 230009, China. Electronic address: cxli@hfut.edu.cn.
  • Wang Y; School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, China.
  • Xu W; School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, China; Key Laboratory on Nanominerals and Pollution Control of Higher Education Institutes, Hefei University of Technology, Hefei, 230009, China.
  • Cui K; School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, China; Key Laboratory on Nanominerals and Pollution Control of Higher Education Institutes, Hefei University of Technology, Hefei, 230009, China.
  • Zhan X; School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, China.
  • Deng R; School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, China.
  • Zhang X; Institute of Physical Science and Information Technology, Anhui University, Hefei, 230601, China.
Chemosphere ; 324: 138340, 2023 May.
Article em En | MEDLINE | ID: mdl-36893868
ABSTRACT
Nano zero-valent iron (nZVI) is extensively used as a peroxymonosulfate (PMS) activator but suffers from the ease of oxidation and agglomeration due to its high surface energy and inherent magnetism. Here, green and sustainable yeast was selected as a support material to firstly in-situ prepare yeast-supported Fe0@Fe2O3 and used for activating PMS to degrade tetracycline hydrochloride (TCH), one of the common antibiotics. Due to the anti-oxidation ability of the Fe2O3 shell and the support effect of yeast, the prepared Fe0@Fe2O3/YC exhibited a superior catalytic activity for the removal of TCH as well as some other typical refractory contaminants. The chemical quenching experiments and EPR results demonstrated SO4•- was the main reactive oxygen species while O2•-, 1O2 and •OH played a minor role. Importantly, the crucial role of the Fe2+/Fe3+ cycle promoted by the Fe0 core and surface iron hydroxyl species in PMS activation was elucidated in detail. The TCH degradation pathways were proposed by LC-MS and density functional theory (DFT) calculation. In addition, the outstanding magnetic separation property, anti-oxidation ability, and high environmental resistance of the catalyst were demonstrated. Our work may inspire the development of green, efficient, and robust nZVI-based materials for wastewater treatment.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Saccharomyces cerevisiae / Tetraciclina Idioma: En Revista: Chemosphere Ano de publicação: 2023 Tipo de documento: Article País de afiliação: China

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Saccharomyces cerevisiae / Tetraciclina Idioma: En Revista: Chemosphere Ano de publicação: 2023 Tipo de documento: Article País de afiliação: China