零价铁去除Cr(Ⅵ)的批实验研究  

Batch experiments on the removal of chromium(Ⅵ) by zero valent iron

作　　者：黄园英[1] 刘菲[1] 鲁雅梅[2] 

机构地区：[1]中国地质大学水资源与环境学院,北京100083 [2]吉林大学环境与资源学院,吉林长春130026

出　　处：《岩石矿物学杂志》2003年第4期349-351,共3页Acta Petrologica et Mineralogica

基　　金：国家自然科学基金资助项目 ( 4 0 0 72 0 80 )

摘　　要：零价铁去除Cr(Ⅵ )的一系列批实验结果表明 :水溶液中发生的氧化还原反应符合准一级反应 ;对于相同粒度的铁屑 (比表面积 2 .89m2 / g) ,固液比由 0 .5 g/ 10 0mL增加到 2 .0 g/ 10 0mL ,Cr(Ⅵ )质量浓度达到排放标准所需反应时间从 2 6 .7min降为 3.6min ;在固液比相同、原水中Cr(Ⅵ )质量浓度不超过 30mg/L时 ,原水质量浓度增大 ,达到饮用水标准的反应时间增加 ;其他条件相同 ,升高温度可提高零价铁与Cr(Ⅵ )The main goal of a series of laboratory experiments was to determine the efficiency of iron for removing hexavalent chromium. The results indicate that the reductive reaction of zero_valent iron with hexavalent chromium reaches the quasi_ first_order standard, that the ratio of the granular iron (BTE 2.89 m 2/g) to solution increases from 0.5 g/100 mL to 2.0 g/100 mL, and that the reaction time is reduced from 26.7 min to 3.6 min. It is also shown that the reaction time should be prolonged to meet the standard of drinking water because the concentration of initial solution within 30 mg/L increases when the quantity of iron is stable, and that the raising of the temperature promotes the removal of hexavalent chromium when other conditions are constant.

关 键 词：零价铁 去除效率 铬 Cr(Ⅵ) 批实验 氧化还原反应 废水处理 

分 类 号：X703[环境科学与工程—环境工程]