掺杂稳定固定剂的沉积物样品吸附Cu、Zn的特征  

Characteristics of Cu and Zn Adsorption onto Surficial Sediments after Spiked with Stabilitating and Immobilizing Materials

作　　者：李西西[1] 王晓丽[2] 雷剑英[1] 赵玉凤[1] 刘瑾[1] 梁文强[1] 赵郭靓[1] 

机构地区：[1]中南民族大学化学与材料科学学院,湖北武汉430074 [2]吉林大学植物科学学院,吉林长春130062

出　　处：《安徽农业科学》2011年第18期11028-11031,共4页Journal of Anhui Agricultural Sciences

基　　金：国家重点基础研究发展计划973项目(2004CB418501);2010年中南民族大学大学生科研创新基金项目

摘　　要：利用掺杂稳定固定剂的沉积物样品进行Cu、Zn的热力学吸附,考察铁氧化物类、有机质类、黏土矿物类及磷酸盐类等11种物质的掺杂对沉积物样品吸附Cu、Zn热力学特征的影响。结果表明,所选用的掺杂材料中羟基磷灰石和磷酸氢二铵可同时提高沉积物吸附Cu、Zn的能力,其中Cu的最大吸附量提高70%～130%,Zn的最大吸附量提高150%以上,说明羟基磷灰石和磷酸氢二铵可望用作污染沉积物中重金属Cu、Zn的稳定固定剂。Thermodynamics adsorption of Cu and Zn on surfacail sediments was investigated after spiked with 11 kinds of stabilitating and immo- bilizing materials,including Fe oxides, organic materials, clay minerals, and phosphate minerals. The results showed that both Cu and Zn adsorption on surficial sediments could be improved with the addition of hydroxyapatite and diammonium hydrogen phosphate, with increase in the maximum adsorption of Cu and Zn by 70% - 130% and above 150%, respectively, indicating that hydroxyapatite and diammonium hydrogen phosphate could be selected as potential stabilitating and immobilizing materials for surficial sediments polluted by heavy metals.

关 键 词：铁氧化物 有机物 羟基磷灰石 磷酸氢二铵 重金属吸附 

分 类 号：X132[环境科学与工程—环境科学]