Research progress of sludge biochar in advanced oxidation process

ZHENG Longhui; YUE Jiahui; WANG Zhiying; LI Xuanzhen; LI Limei; ZHAO Xiaoqin; SHEN Lianfeng

doi:10.13205/j.hjgc.202510020

Volume 43 Issue 10

Oct. 2025

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2025 > 43(10): 183-193

ZHENG Longhui, YUE Jiahui, WANG Zhiying, LI Xuanzhen, LI Limei, ZHAO Xiaoqin, SHEN Lianfeng. Research progress of sludge biochar in advanced oxidation process[J]. ENVIRONMENTAL ENGINEERING , 2025, 43(10): 183-193. doi: 10.13205/j.hjgc.202510020

Citation:

ZHENG Longhui, YUE Jiahui, WANG Zhiying, LI Xuanzhen, LI Limei, ZHAO Xiaoqin, SHEN Lianfeng. Research progress of sludge biochar in advanced oxidation process[J]. ENVIRONMENTAL ENGINEERING , 2025, 43(10): 183-193. doi: 10.13205/j.hjgc.202510020

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Research progress of sludge biochar in advanced oxidation process

doi: 10.13205/j.hjgc.202510020

1. College of Forestry, Henan Agricultural University, Zhengzhou 450046, China;
2. Nanchong Gaoping Ecological Environment Bureau, Nanchong 511303, China

Received Date: 2025-03-31
Accepted Date: 2025-06-15
Rev Recd Date: 2025-05-08

Available Online: 2025-12-03

Publish Date: 2025-10-01

Abstract

Abstract

Advanced oxidation technology based on sludge biochar reuses waste sludge generated by various industries， including municipal sewage treatment plants， pharmaceutical factories， tanneries， dyeing and printing factories， and petroleum industrial plants，etc. It can not only reduce environmental problems caused by sludge accumulation but also effectively alleviate water pollution， yielding far-reaching environmental and social benefits. In order to systematically and comprehensively understand the research progress of sludge biochar in advanced oxidation processes， this paper focused on summarizing the intrinsic connections， reaction mechanisms， and main reinforcing effects of unmodified sludge biochar and modified sludge biochar in different advanced oxidation systems such as persulfate， hydrogen peroxide， peracetic acid， and periodate. The modification methods of sludge biochar generally include the modification of metal and non-metal elements， acid-base treatment. sludge biochar contains various elements and oxygen-containing functional groups. Sludge biochar has excellent surface area and pore structure. The unique properties of sludge biological carbon enable it to efficiently produce active substances， such as strong oxidizing free radicals and singlet oxygen in advanced oxidation systems such as persulfate， hydrogen peroxide， peracetic acid， and periodate， thus achieving efficient degradation of antibiotics， dyes， and other toxic and harmful pollutants. This paper provides new ideas and theoretical support for the future development and application of sludge biochar.
- sludge biochar,
- preparation method,
- activation mechanism,
- advanced oxidation system,
- pollutant degradation

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References(86)

References

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