辐射研究与辐射工艺学报2025，Vol.43Issue(1)：73-82,10.DOI:10.11889/j.1000-3436.2024-0038
电离辐照及其耦合工艺降解煤化工废水中的吡啶
Degradation of pyridine in coal chemical wastewater using ionizing radiation and synergistic processes
王新璇 1杨琦 1张忠磊 2陈海 3陈川红 2张涛2
作者信息
- 1. 中国地质大学(北京)水资源与环境学院 北京 100083
- 2. 中广核达胜科技有限公司 苏州 215214
- 3. 中广核达胜科技有限公司 苏州 215214||中广核达胜加速器技术有限公司 苏州 215214
- 折叠
摘要
Abstract
This study investigates the degradation of pyridine in coal chemical wastewater using electron beam(EB)irradiation and explores the impacts of absorbed dose,initial pyridine concentration,and pH.We examined the efficacy of EB irradiation alone and in combination with oxidizing agents(H2O2,PMS,O3)on pyridine degradation,the performance of EB synergistic process and the mechanism of pyridine by EB irradiation were studied.Our findings reveal that at an initial pyridine concentration of 50 mg/L,absorbed dose of 5.0 kGy,and pH=7.0,the removal and mineralization efficiencies reached 90.88%and 6.05%,respectively.The addition of oxidizing agents significantly enhanced these efficiencies;removal rates were 94%with H2O2,96%with PMS,and 93%with O3,while mineralization rates were 12%,9.3%,and 10%,respectively.The EB combined with PMS showed the highest degradation performance,followed by EB/H2O2,EB/O3,and EB alone.Quenching experiments confirmed that the degradation mechanisms involve·OH,eaq-,and H·radicals,with·OH playing a major role in attacking and breaking down the pyridine ring.关键词
煤化工废水/吡啶/高级氧化/电离辐照技术Key words
Coal chemical wastewater/Pyridine/Advanced oxidation/Ionizing irradiation technology分类
资源环境引用本文复制引用
王新璇,杨琦,张忠磊,陈海,陈川红,张涛..电离辐照及其耦合工艺降解煤化工废水中的吡啶[J].辐射研究与辐射工艺学报,2025,43(1):73-82,10.
