高浓度丙烯腈废水的辐照处理  

Radiation treatment of high concentration acrylonitrile wastewater

作　　者：孙宏图[1] 王建龙[1] 

机构地区：[1]清华大学核能与新能源技术研究院,北京100084

出　　处：《清华大学学报（自然科学版）》2009年第9期1524-1526,共3页Journal of Tsinghua University(Science and Technology)

基　　金：国家自然科学基金资助项目(50678089)

摘　　要：为考察优先污染物丙烯腈在γ辐照下的去除情况,选取了高浓度的丙烯腈废水作为研究对象,利用60Co作为γ射线源进行辐照分解,并利用吡啶比色法测定水中丙烯腈的含量,研究了丙烯腈的辐照降解。结果表明:辐照剂量为15kGy时,丙烯腈去除率随初始浓度的增大而增大;初始质量浓度为4g/L的丙烯腈溶液,随着辐照剂量的增大,丙烯腈的去除率先增加后减小,10 kGy时的去除效果最佳,去除率达到90%以上;在中性条件下的去除效果要好于偏酸或偏碱性条件;添加FeCl3对丙烯腈去除率的影响很小。The degradation of acrylonitrile （AN） in aqueous solution by gamma radiation was investigated to study the feasibility of radiation treatment of acrylonitrile wastewater. ^60Co was used as the radiation source. The acrylonitrile concentration was analyzed using the pyridine colorimetric method. The experimental results show that the AN removal efficiency increased with increasing of the initial concentration at radiation dose of 15 kGy. When the initial AN concentration was 4 g/L, the removal efficiency first increased with increasing radiation dose, then decreased with further increases of the radiation dose. The AN removal efficiency was highest at a radiation dose of 10 kGy, reaching more than 90%. The AN removal efficiency in a neutral pH solution was higher than that in acidic or alkaline conditions. The addition of FeCl3 before irradiation had almost no influence on the AN removal efficiency.

关 键 词：丙烯腈 去除率 废水 辐射降解 

分 类 号：X703[环境科学与工程—环境工程]