Persulfate Activation by N-Doping Biochar from Peanut for Efficient Degradation of Phenol

In this research, peanut shell and urea were used as raw materials to successfully prepare N-doping biochar with a good ability to activate perdisulfate (PDS) to degrade phenol. The effects of carbonization time, co-pyrolysis temperature, co-pyrolysis time, and the doping ratio of biochar on the act...

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Bibliographic Details
Published in:Catalysis letters 2023-09, Vol.153 (9), p.2824-2837
Main Authors: Li, Chenghao, Xu, Bing, Chen, Lili, Jin, Mengmeng, Yi, Guiyun, Chen, Lunjian, Xing, Baolin, Zhang, Yulong, Wu, Yuanfeng
Format: Article
Language:English
Subjects:
Biodegradation
Carbon
Catalysis
Chemistry
Chemistry and Materials Science
Degradation
Density functional theory
Density functionals
Doping
Efficiency
Electron distribution
Electron paramagnetic resonance
Energy consumption
Free radicals
Free radicals (Chemistry)
Hydrochloric acid
Industrial Chemistry/Chemical Engineering
Methods
Nitrogen
Organic carbon
Organometallic Chemistry
Oxidation
Peanuts
Phenols
Photocatalysis
Physical Chemistry
Pollutants
Potassium
Purification
Pyrolysis
Ratios
Raw materials
Reagents
Sewage
Spectrum analysis
Temperature
Urea
Wastewater
Wastewater treatment
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Summary:In this research, peanut shell and urea were used as raw materials to successfully prepare N-doping biochar with a good ability to activate perdisulfate (PDS) to degrade phenol. The effects of carbonization time, co-pyrolysis temperature, co-pyrolysis time, and the doping ratio of biochar on the activation of persulfate were studied. The results showed that the efficiency of phenol degradation catalyzed by persulfate and biochar was 93%, and the total organic carbon (TOC) removal rate reached 66%. Besides, the phenol removal rate could also maintain 81% after four cycles. Moreover, the free radicals and non-free radicals was confirmed by Electron paramagnetic resonance (ESR) and capture experiments. The results of Density Functional Theory (DFT) calculations showed that the electron distribution of N-doping biochar became more uneven compared with the original biochar. This study provides a reference for the treatment of phenolic wastewater and may promote the understanding of N-doping biochar/persulfate degradation mechanism. Graphical Abstract
ISSN:1011-372X
1572-879X
DOI:10.1007/s10562-022-04206-w