生物吸附剂处理含镍废水的吸附参数和机理研究进展  

PROGRESS OF BIOSORPTION PARAMETERS AND MECHANISM FOR Ni^(2+) IN LIQUIDS USING BIOSORBENTS

作　　者：张云[1] 杨柳青[2] 李晓丽[1] 王耀龙[2] 李彦锋[1,2] 

机构地区：[1]兰州大学资源环境学院,甘肃兰州730000 [2]兰州大学化学化工学院,兰州大学生物化工及环境技术研究所,甘肃兰州730000

出　　处：《水处理技术》2010年第11期1-4,10,共5页Technology of Water Treatment

基　　金：国家水体污染控制与治理科技重大专项(2008ZX07212-001-04)

摘　　要：近年来对重金属的生物吸附进行了大量研究,然而,大部分研究则关注于优化生物吸附参数以获得最高的吸附效率、关于生物吸附机理的研究较少。结合红外(FTIR)、扫描电镜(SEM-EDX),透射电镜(TEM)和一些经典的方法如滴定法等对表征生物吸附剂的表面吸附是非常有效的。不同的功能团如羧基、羟基和胺基等基团在生物吸附过程中起着重要的作用,溶液pH对生物吸附性能有较大的影响,离子交换和螯合被认为是大多数重金属的生物吸附中最常见的机理。A significant number of biosorption studies on the removal of heavy metal from aqueous solutions have been conducted worldwide. Nearly all of them have been directed towards optimizing biosorption parameters to obtain the highest removal efficiency while the rest of them are concerned with the biosorption mechanism. Combinations of FTIR,SEM-EDX,TEM as well as classical methods such as titrations are extremely useful in determining the main processes on the surfaces of biosorbents. Diverse functional groups represented by carboxyl,hydroxyl,sulfate and amino groups play significant roles in the biosorption process. In brief,ion exchange and complexation can be pointed out as the most prevalent mechanisms for the biosorption of most heavy metals.

关 键 词：生物吸附 镍 生物吸附剂 机理 

分 类 号：TQ424[化学工程] X703.1[环境科学与工程—环境工程]