Degradation of pyrazinamide in aqueous solution by electron beam irradiation: kinetics,influence factors and mechanism study期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

按检索

Degradation of pyrazinamide in aqueous solution by electron beam irradiation: kinetics,influence factors and mechanism study

Authors:	Zou Qi Huo Zhuhao Shao Haiyang Gu Jianzhong Xu Gang

Institution:	1.School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai, 200444, People’s Republic of China ;2.Key Laboratory of Organic Compound Pollution Control Engineering, Ministry of Education, Shanghai, 200444, People’s Republic of China ;

Abstract:	The degradation of pyrazinamide (PZA) by electron beam irradiation (EBI) was studied. It was found that the degradation of PZA was efficient with the removal rate of 99% for 0.2 mM PZA under 5 kGy, and the degradation kinetics followed pseudo-first-order kinetics. The presence of CO₃^2?, HCO₃^?, NO₃^?, and fulvic acid inhibited the degradation of PZA. The addition of H₂O₂ or K₂S₂O₈ effectively enhanced the degradation and mineralization of PZA. The scavenger experiments and quantum chemical calculations showed that ^·OH was the primary reactive species in the degradation. The identification of intermediates and quantum chemical calculations illustrated the mechanism of degradation.

Keywords:
本文献已被 SpringerLink 等数据库收录！