锌粉对1,2,4-三氯苯的脱氯性能  

Dechlorination of 1,2,4-Trichlorobenzene with Zinc Powder

作　　者：谢凝子[1] 邱罡[1] 陈少瑾[1] 

机构地区：[1]韩山师范学院环境化学应用技术研究所,广东潮州521041

出　　处：《化工环保》2007年第3期227-229,共3页Environmental Protection of Chemical Industry

基　　金：广东省科技攻关项目(2003C32910)。

摘　　要：采用锌粉对1,2,4-三氯苯(1,2,4-TCB)进行了脱氯的研究。实验结果表明,在40mL质量浓度为22.94m g/L的1,2,4-TCB水溶液中加入1.0g锌粉,反应24h时,1,2,4-TCB的还原率可达94.6%;反应16h时,试样中的Cl-浓度约为1,2,4-TCB完全脱氯所得Cl-理论浓度的30%;锌粉还原1,2,4-TCB的反应能在较宽的pH范围内进行,弱碱性条件下的脱氯效果最好,1,2,4-TCB的还原率达70%。The dechlorination of 1,2,4-trichlorobenzene （ 1,2,4-TCB ） with zinc powder was studied. The experimental results indicate that： Adding 1.0 g zinc powders into 40 mL aqueous solution of 1,2,4-TCB with mass concentration of 22.94 mg/L, the reduction efficiency of 1,2,4-TCB can reach 94.6 % after 24 h of reaction; After 16 h of reaction, the Cl^- concentration in the sample is about 30% of the calculated theoretical value for complete dechlorination of 1,2,4-TCB. The reduction reaction of 1,2,4-TCB with zinc powder can take place in a relatively wider range of pH, and the dechlorination effect under alkalescence condition is the best with 70% of 1,2,4-TCB reduction efficiency.

关 键 词：锌粉 1 2 4-三氯苯 脱氯 

分 类 号：X783[环境科学与工程—环境工程] X131.2