Insight into the synergy effect of BDD anode for peroxymonosulfate activation: The radical and non-radical mechanisms

IF 5.5 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2025-02-01 DOI:10.1016/j.jtice.2024.105855

Huanting Bai , Tiantian Zhang , Yatong Jing , Xiaohan Wang , Juan Guo , Chao Bai , Tuo Wang , Mingming Ta , Fuchun Zhang , Yanzhong Zhen

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Abstract

Background

The widespread use of carbamazepine (CBZ) has led to environmental contamination of water bodies, raising concerns about water quality safety and ecosystem health.

Methods

In this study, an electrochemical process for activating peroxymonosulfate is conducted, with boron-doped diamond as anode (E-BDD-PMS). The BDD anode possesses a high over-potential for oxygen, which effectively suppresses the generation of oxygen evolution side reactions.

Significant findings

Under the optimal condition, 89.57 % of CBZ could be removed within 40 min. The quenching experiments and EPR analysis revealed that both free radicals (•OH and

{SO}_{4}^{• -}

) and nonradicals (¹O₂) participated in the reaction. Specifically, the CBZ oxidation mainly occurs via four pathways: DET, PMS oxidation, radical oxidation, nonradical oxidation. The contributions of these four pathways are 11.67 %, 5.84 %, 32.72 % and 50.08 %, respectively. Meanwhile, the removal of seven different pollutants are also studied. Based on the experimental results, the E-BDD-PMS process has a great promise in organic contaminants degradation.

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来源期刊

Journal of the Taiwan Institute of Chemical Engineers 工程技术-工程：化工

CiteScore

9.10

自引率

14.00%

发文量

362

审稿时长

35 days

期刊介绍： Journal of the Taiwan Institute of Chemical Engineers (formerly known as Journal of the Chinese Institute of Chemical Engineers) publishes original works, from fundamental principles to practical applications, in the broad field of chemical engineering with special focus on three aspects: Chemical and Biomolecular Science and Technology, Energy and Environmental Science and Technology, and Materials Science and Technology. Authors should choose for their manuscript an appropriate aspect section and a few related classifications when submitting to the journal online.