Sludge-derived biochar applied in peroxymonosulfate (PMS) activation: Regulation of active sites and synergistic production of reaction oxygen species

IF 5.5 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2025-03-10 DOI:10.1016/j.jtice.2025.106071

Jiawei Liu , Zilian Liu , Rongrong Miao , Yingjun Wang , Liang He , Huajing Zhou , Sheng Liang , Xin Lei , Xiaoyong Deng

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引用次数: 0

Abstract

Sewage sludges and chlorophenols (e.g., 4-CP) generated from papermaking industries are polluting and hazardous. Nevertheless, the paper mill sludges possessed inherent iron and carbon components is expected to be converted into Fe/C-based peroxymonosulfate (PMS) activator for wastewater purification. In this study, the derived ferric-rich biochar materials paper sludge carbon (PSC) is synthesized via pyrolyzing paper mill sludge to activating PMS for 4-CP degradation in water matrix. The optimal PSC/PMS system exhibits about 100.00% 4-CP degradation efficiency and the kinetic constant reaches 0.1165 min^-1 while 66.82% of Cl^- is shed owing to high mineralization efficiency. Species trapping experiments and electron paramagnetic resonance spectra analysis indicate that the ¹O₂ and O₂^•− species dominate the 4-CP degradation. The high PMS decomposition and 4-CP degradation efficiency attribute to the Fe(II) and abundant defects. This study provides novel strategies for halogen removal and value-added utilization of paper mill sludge in environmental remediation.

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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.