Efficient degradation of N-nitrosopyrrolidine using CoFe-LDH/AC particle electrode via heterogeneous Fenton-like reaction.

Autor: Jiang Z; School of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, 350000, China. Electronic address: zhuwujiang@126.com., Wang Y; School of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, 350000, China., Yu H; School of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, 350000, China., Yao N; School of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, 350000, China., Shen J; School of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, 350000, China., Li Y; School of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, 350000, China., Zhang H; School of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, 350000, China., Bai X; School of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, 350000, China. Electronic address: sakura@fjut.edu.cn.
Jazyk: angličtina
Zdroj: Chemosphere [Chemosphere] 2023 Feb; Vol. 313, pp. 137446. Date of Electronic Publication: 2022 Dec 01.
DOI: 10.1016/j.chemosphere.2022.137446
Abstrakt: With the rapid development of drinking water disinfection technology, extensive attentions are paid to the nitrogenous disinfection by-products (N-DBPs) that has strong carcinogenicity, thus their degradation becomes important for the health of human beings. In this work, for the first time, CoFe-LDH material used as particle electrode is proposed to treat trace N-nitrosopyrrolidine (NPYR) in a three-dimensional aeration electrocatalysis reactor (3DAER). The factors on the degradation efficiency and energy consumption of NPYR are systematically investigated, and the results of radical quenching experiments show that the degradation of NPYR is completed by combining with ·OH, ·O 2 and direct oxidation together. CoFe-LDH particle electrode plays a vital role in generating ·OH via heterogeneous ‾Fenton-like reaction. Moreover, the adsorbed saturated CoFe-LDH particle electrode can be regenerated by electrochemical action to induce further recycle adsorption and form in-situ electrocatalysis. This work pave a way for the removal of NPYR with high efficiency, low energy conservation and environmental protection.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2022 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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