Degradation of dicamba – A persistent herbicide – By combined application of formic acid and UV as an advanced reduction process

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外文摘要：anions (CO_3~(2-) and SO_4~(2-)) had a slightly positive effect on the degradation of dicamba and led to an increase in degradation to 99 %, while they had a negative effect on the dechlorination by 7 % and 30 %, respectively. Due to the turbidity induced by dissolved organic matters (DOM), a moderate decrease in degradation by 39 % and dechlorination by 30 % was observed. The existence of five intermediates identified by GC-MS technique confirmed the proposed mechanism of dicamba degradation via ARP. Reductive degradation of dicamba mainly consists of processes based on CO_2•~‾, including single electron transfer process and radical-nucleophilic aromatic substitution (SRN) reactions, demonstrating the capability of this ARP for the effective degradation of dicamba.

外文关键词：

Wastewater treatmentPhotolysisEmerging organic pollutantsEffluentsHybrid processes

作者：

Zahra Askarniya、Łukasz Cichocki、Sławomir Makowiec、Chongqing Wang、Grzegorz Boczkaj

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作者单位：

Department of Sanitary Engineering, Faculty of Civil and Environmental Engineering, Gdansk University of Technology, G. Narutowicza St. 11/12, Gdansk 80 – 233,Poland

Department of Organic Chemistry, Faculty of Chemistry, Gdansk University of Technology, G. Narutowicza St. 11/12, Gdansk 80 – 233, Poland

School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China

Department of Sanitary Engineering, Faculty of Civil and Environmental Engineering, Gdansk University of Technology, G. Narutowicza St. 11/12, Gdansk 80 – 233,Poland||School of Civil, Environmental, and Architectural Engineering, College of Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea

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出版年：

2025

DOI：

10.1016/j.jhazmat.2025.137984

Journal of hazardous materials

SCI

ISSN：0304-3894

年,卷(期)：2025.492(Jul.15)