3种不同土壤的理化性质及其对Cu2+的吸附行为研究  

Study on physical and chemical properties of three different kinds of soils and their adsorption behavior of copper ion

作　　者：赵大洲 ZHAO Dazhou(School of Chemistry & Chemical Engineering,Shaanxi Xueqian Normal University,Xi′an 710100,China)

机构地区：[1]陕西学前师范学院化学化工学院,陕西西安710100

出　　处：《轻工学报》2021年第1期67-72,101,共7页Journal of Light Industry

基　　金：国家自然科学基金项目(50573030);陕西省教育厅科研计划项目(20JK0584)。

摘　　要：对不同地区3种土壤的水浸pH值、有机质含量、游离氧化铁含量、土壤机械组成、阳离子交换量等基本理化指标进行测定,并对3种土壤吸附废水中Cu2+的动力学进行研究,结果表明:红壤呈酸性,其游离氧化铁含量最高;黑土呈中性,其阳离子交换量最高;棕黄壤呈中性,其有机质含量最高.与红壤和棕黄壤相比,黑土对Cu2+的吸附过程更符合二级动力学方程,更适合作为Cu2+的吸附材料.The basic physical and chemical indicators such as pH value,organic matter content,free iron oxide content,soil mechanical composition,cation exchange capacity of the three kinds of soils in different regions were measured,and the kinetics of the three kinds of soils adsorbing Cu2+in wastewater were studied.The results showed that red soil was acidic and had the highest free iron oxide content,black soil was neutral and its cation exchange capacity was the highest,brown soil was neutral and its organic matter content was the highest;compared with red soil and brown yellow soil,the adsorption process of black soil on Cu2+was more in line with the second-order kinetic equation and more suitable for Cu2+adsorption material.

关 键 词：土壤 理化性质 铜离子 吸附行为 

分 类 号：S154.2[农业科学—土壤学] O611.4[农业科学—农业基础科学]