生态环境学报2011，Vol.20Issue(1)：164-168,5.
羟基磷灰石对棕壤和红壤铜吸附的影响
Effect of hydroxyapatite on copper sorption in brown earth and red soil
摘要
Abstract
The present paper uses the isothermal equilibrium theory to investigate the effect of hydroxyapatite on copper sorption in brown earth and red soil, and Freundlich equation (Cs= KfCen) to characterize the sorption behaviors of copper. The results showed that brown earth had stronger ability to absorb Cu. than red soil. Compared to the non-phosphorus system, applied hydroxyapatite could increase capability to absorb copper in both brown earth and red soils, when applied at n(P): n(Cu)]= 1:1. The effect of applied hydroxyapatite on sorption by red soil was higher than by brown earth. Increasing the amount of applied hydroxyapatite increased sorption of copper and enhanced capability of copper adsorption by brown earth and red soils. The effect of applied high volume HA [n(P): n(Cu)]= 4:1 was the most noticiable. Compared to the non-phosphorus system, total sorption capacity ( Kf value ) for brown earth and red soils increased by 62.1％ and 28.4％, respectively. It is speculatet that hydroxyapatite could be a candidate phosphate fertilizer in copper contaminated brown earth and red soil.关键词
羟基磷灰石/铜/棕壤/红壤/吸附/分配系数Key words
hydroxyapatite/ copper/ brown earth/ red earth/ sorption/ distribution coefficient分类
资源环境引用本文复制引用
宋正国,唐世荣,丁永祯,居学海..羟基磷灰石对棕壤和红壤铜吸附的影响[J].生态环境学报,2011,20(1):164-168,5.基金项目
国家自然科学基金项目(30900924) （30900924）
天津市应用基础及前沿技术研究计划(09JCYBJC08500) （09JCYBJC08500）
