TY - JOUR
T1 - Hierarchical porous biochar from shrimp shell for persulfate activation: A two-electron transfer path and key impact factors
AU - Yu, Jiangfang
AU - Tang, Lin
AU - Pang, Ya
AU - Zeng, Guangming
AU - Feng, Haopeng
AU - Zou, Jiajing
AU - Wang, Jingjing
AU - Feng, Chengyang
AU - Zhu, Xu
AU - Ouyang, Xilian
AU - Tan, Jisui
N1 - Generated from Scopus record by KAUST IRTS on 2023-09-23
PY - 2020/1/1
Y1 - 2020/1/1
N2 - Herein, hierarchical porous biochar from shrimp shell (PSS-bio) was prepared and applied for persulfate activation for 2,4-dichlorophenol removal. The pyrolysis temperature was found to play an important role in carbon structure and property modulation, where PSS-bio obtained at 800 °C (PSS-800) exhibited the fastest adsorption capacity and the best catalytic activity with the degradation rates 29 times higher than that of PSS-bio obtained at 400 °C (PSS-400). Further analysis demonstrated that hierarchical pores and carbon configuration were two key impact factors of biochar in AOP. Interestingly, the original free-radical dominated pathway in PSS-400 also changed into a non-radical one (direct two-electron transfer path) in PSS-800, whose efficiency could be somewhat disturbed by pH values, humic acid and anions regardless of their concentrations as low as 5 mM or as high as 500 mM, demonstrating its application potential for the treatment of both highly saline water and organic-rich water.
AB - Herein, hierarchical porous biochar from shrimp shell (PSS-bio) was prepared and applied for persulfate activation for 2,4-dichlorophenol removal. The pyrolysis temperature was found to play an important role in carbon structure and property modulation, where PSS-bio obtained at 800 °C (PSS-800) exhibited the fastest adsorption capacity and the best catalytic activity with the degradation rates 29 times higher than that of PSS-bio obtained at 400 °C (PSS-400). Further analysis demonstrated that hierarchical pores and carbon configuration were two key impact factors of biochar in AOP. Interestingly, the original free-radical dominated pathway in PSS-400 also changed into a non-radical one (direct two-electron transfer path) in PSS-800, whose efficiency could be somewhat disturbed by pH values, humic acid and anions regardless of their concentrations as low as 5 mM or as high as 500 mM, demonstrating its application potential for the treatment of both highly saline water and organic-rich water.
UR - https://linkinghub.elsevier.com/retrieve/pii/S0926337319309075
UR - http://www.scopus.com/inward/record.url?scp=85072018744&partnerID=8YFLogxK
U2 - 10.1016/j.apcatb.2019.118160
DO - 10.1016/j.apcatb.2019.118160
M3 - Article
SN - 0926-3373
VL - 260
JO - Applied Catalysis B: Environmental
JF - Applied Catalysis B: Environmental
ER -