开孔泡沫混凝土对Cr(Ⅲ)的吸附性能研究  

Study on Adsorption Performance of Cr(Ⅲ) by Cell-open Foam Concrete

作　　者：张玉苹[1,2] 牛云辉[1] 卢忠远[1] 张雷[1,2] 肖世玉[1,2] 

机构地区：[1]西南科技大学四川省非金属复合与功能材料重点实验室-省部共建国家重点实验室培育基地,绵阳621000 [2]西南科技大学材料科学与工程学院,绵阳621000

出　　处：《混凝土与水泥制品》2016年第11期58-64,共7页China Concrete and Cement Products

基　　金：国家专项研究发展计划(2016YFC0701004)

摘　　要：为探索开孔泡沫混凝土对Cr(Ⅲ)的吸附性能影响,以普通硅酸盐水泥作为胶凝材料制备400kg/m^3的开孔泡沫混凝土,采用静态吸附法研究开孔泡沫混凝土对Cr(Ⅲ)的吸附性能影响,并对其吸附动力学和热力学进行研究。结果表明:开孔泡沫混凝土对Cr(Ⅲ)的吸附效率[100m L含Cr(Ⅲ)溶液初始浓度为50mg/L]可达98.53%;开孔泡沫混凝土对Cr(Ⅲ)的吸附过程符合准二级吸附动力学模型,不同温度下吸附过程均符合Langmuir等温吸附模型;开孔泡沫混凝土对Cr(Ⅲ)的吸附是一个熵推动的自发过程。因此,将开孔泡沫混凝土用于吸附废水中Cr(Ⅲ)具有一定可行性。In order to study the effect of cell-open foam concrete on the adsorption properties of Cr （Ⅲ）, OPC was used as the eementitious material to prepare the 400kg/m^3 cell-open foam concrete, the static adsorption method was used in the study and the kinetics and thermodynamics adsorption was studied. The results showed that the Cr （Ⅲ） adsorption rate of cell-open foam concrete [the initial concentration of Cr （Ⅲ） was 50mg/L per 10OmL]can be 98.53%; this adsorption process followed the pseudo second-order kinetic model, the adsorption process at different temperatures followed Langmuir isotherm model. The adsorption process was a spontaneous process, which indicated that the cell-open foam concrete can be used for adsorbing the Cr（Ⅲ） of the wastewater.

关 键 词：开孔泡沫混凝土 Cr(Ⅲ) 吸附 动力学 热力学 

分 类 号：TU528[建筑科学—建筑技术科学]