改性前后的大洋富钴结壳尾矿吸附废水中Pb^(2+)的影响因素探讨  

DISCUSS ON ADSORPTION FACTORS OF Pb^(2+) IN WASTEWATER BY MODIFIED AND UNMODIFIED OCEANIC COBALT-RICH CRUST TAILINGS

作　　者：陈国荣[1] 

机构地区：[1]北京矿冶研究总院,北京100044

出　　处：《矿冶》2009年第2期101-104,108,共5页Mining And Metallurgy

基　　金：中国大洋协会资助课题(DY105-04-01-11)

摘　　要：系统地研究了Na2CO3和CTMAB(十六烷基三甲基溴化胺)改性前后大洋富钴结壳尾矿对模拟废水中Pb2+离子的吸附影响因素。结果表明最佳的条件为:吸附剂用量为7.5g/L,吸附时间为4h,废水初始浓度为200mg/L,废水初始pH值为自然值;且Na2CO3和CTMAB改性大洋富钴结壳尾矿对Pb2+的吸附作用均优于未改性尾矿,Na2CO3改性大洋富钴结壳尾矿对Pb2+的吸附作用优于CTMAB改性尾矿。The influences of various factors on the absorption ability of Na2CO3 modified tailings , CTMAB （cetyltrimethylammonium bromide ） modified tailings and unmodified tailings to adsorb Pb^2＋ in the simulated wastewater are studied systemically. The results indicate that when the sorbent dosage is 7.5g/L in the simulated wastewater,the time is 4h,the initial Pb^2＋ concentration in the simulated wastewater is 200mg/L,the initial pH of the simulated wastewater is natural, the adsorption effect is best. Further more , the adsorption effect of Na2CO3 and CTMAB modified tailings for Pb^2＋ are all better than that of unmodified tailings , the adsorption effect of Na2CO3 modified tailings for Pb^2＋ is better than that of CTMAB modified tailings.

关 键 词：大洋富钴结壳 尾矿 改性 吸附 影响因素 

分 类 号：X751[环境科学与工程—环境工程] X703.1