A new strategy for enhanced electrochemically activation of persulfate on B and Co co-modified carbon felt in flow-through system for efficient organic pollutants degradation

Jiahao Liu; Liping Xing; Jiaxin Lan; Lean Zhou; Ziyi Ding; Jing Xia; Ping Wang; Jingju Cai; Jian Zhu

doi:10.1016/j.chemosphere.2023.140534

A new strategy for enhanced electrochemically activation of persulfate on B and Co co-modified carbon felt in flow-through system for efficient organic pollutants degradation

Chemosphere. 2024 Jan:346:140534. doi: 10.1016/j.chemosphere.2023.140534. Epub 2023 Nov 3.

Authors

Jiahao Liu¹, Liping Xing¹, Jiaxin Lan¹, Lean Zhou², Ziyi Ding¹, Jing Xia¹, Ping Wang¹, Jingju Cai³, Jian Zhu⁴

Affiliations

¹ College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China.
² Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province/School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, China.
³ College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China. Electronic address: caijj7692@csuft.edu.cn.
⁴ College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China. Electronic address: znlzhujian@csuft.edu.cn.

PMID: 37926166
DOI: 10.1016/j.chemosphere.2023.140534

Abstract

Electrochemical activation of persulfate (EA-PS) is gradually attracting attention as an emerging method for wastewater treatment. In this study, a novelty flow-through EA-PS system was first attempted for pollutants degradation using boron and cobalt co-doping carbon felt (B, Co-CF) as the cathode. SEM images, XPS and XRD spectra of B, Co-CF were investigated. The optimal doping ration between B and Co was 1:2. Increasing current density, PS concentration and flow rate, decreasing initial pH accelerated the removal of AO7. The mechanism involved in EA-PS were the comprehensive effect of DET, ^•OH and SO₄^•-. B, Co-CF cathode for flow-through system was stable with five cycles efficient AO7 decay performance. EA-PS in flow-through system was an efficient method with low cost and efficient pollutants degradation. This work provides a feasible strategy for synergistically enhancing PS activation and promoting the degradation of organic pollutants.

Keywords: Boron-cobalt modified carbon felt; Electrochemically activation; Flow-through; Persulfate.

MeSH terms

Carbon
Carbon Fiber
Environmental Pollutants*
Oxidation-Reduction
Water Pollutants, Chemical* / analysis

Substances

Carbon
Carbon Fiber
Environmental Pollutants
Water Pollutants, Chemical