纳米铁粉对四氯化碳的脱氯行为  

DECHLORINATION OF TETRACHLORIDE CARBON BY NANOSCALE IRON PARTICLES

作　　者：那娟娟[1] 冉均国[1] 苟立[1] 苏葆辉[1] 李维俊[2] 

机构地区：[1]四川大学材料科学与工程学院 [2]四川大学化学工程学院,成都610065

出　　处：《硅酸盐学报》2006年第4期487-490,共4页Journal of The Chinese Ceramic Society

摘　　要：采用纳米Fe粉对四氯化碳(CCl4)进行脱氯处理。选用L25(56)正交试验方案,以纳米Fe粉对CCl4的脱氯率为指标,考察降解介质的初始pH值、纳米Fe粉的质量、反应温度、摇床转速和脱氯时间5个影响因素。结果表明:pH值的影响显著。纳米Fe粉对CCl4脱氯的最佳工艺条件为:介质的初始pH=2.0,纳米Fe粉为2.0g,体系温度为50℃,摇床转速为200r/min,降解18h。在最佳工艺条件下获得了99.5%的脱氯率。A new method of the dechlorination degradation of tetrachloride carbon by nanoscale iron particles was studied. The L25（56） orthogonal experiment design was adopted, and the dechlorination efficiency of tetrachloride carbon by nanoscale iron particles was used as the observation index. Five influencing factors were observed including the initial pH value of the medium, the mass of nanoscale iron particles, degradation temperature, rotation speed, and reaction time. The results indicate that the initial pH value has a significant effect on the dechlorination efficiency. The experiments revealed the following optimal conditions： 2.0 g nanoscale iron particles, initial pH value of 2.0, 50℃, 200 r/min and 18 h. Under these conditions, the dechlorination efficiency reaches 99.5 %.

关 键 词：四氯化碳 纳米铁粉 脱氯 正交试验 

分 类 号：X52[环境科学与工程—环境工程]