Recent Development in Sludge Biochar-Based Catalysts for Advanced Oxidation Processes of Wastewater

Catalysts

Ying Chen¹  Xingxing Chen²  Yin Yu²  Liya Fu²  Min Li²  Jin Yang²  Changyong Wu²  Panxin Wang²  Xiaoguang Jin² 

[1] School of Architecture and Environment, Sichuan University, Chengdu 610065, China;State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;

关键词: sludge;    catalyst;    wastewater treatment;    advanced oxidation processes;    application;   

DOI  :  10.3390/catal11111275

来源: DOAJ

【 摘 要 】

Sewage sludge as waste of the wastewater treatment process contains toxic substances, and its conversion into sludge biochar-based catalysts is a promising strategy that merges the merits of waste reutilization and environmental cleanup. This study aims to systematically recapitulate the published articles on the development of sludge biochar-based catalysts in different advanced oxidation processes of wastewater, including sulfate-based system, Fenton-like systems, photocatalysis, and ozonation systems. Due to abundant functional groups, metal phases and unique structures, sludge biochar-based catalysts exhibit excellent catalytic behavior for decontamination in advanced oxidation systems. In particular, the combination of sludge and pollutant dopants manifests a synergistic effect. The catalytic mechanisms of as-prepared catalysts in these systems are also investigated. Furthermore, initial solution pH, catalyst dosage, reaction temperature, and coexisting anions have a vital role in advanced oxidation processes, and these parameters are systematically summarized. In summary, this study could provide relatively comprehensive and up-to-date messages for the application of sludge biochar-based catalysts in the advanced oxidation processes of wastewater treatment.

【 授权许可】

Unknown