作　　者： ; ; ; ; ; ;

机构地区： 湖南大学环境科学与工程学院

出　　处： 《桂林工学院学报》 2006年第3期388-391,共4页

摘　　要： 利用废弃蛋壳制备碳羟基磷灰石,并利用其吸附废水中的Cd2+.考察了Cd2+初始浓度、pH值、吸附时间、吸附剂用量以及温度等因素对吸附效果的影响,结果表明:当废水中Cd2+初始浓度为30 mg/L、pH=7、吸附时间35 m in、温度35℃时,碳羟基磷灰石对Cd2+去除率高达99.9%.吸附实验还表明该吸附符合Freundlich方程. Carbonate hydroxylapatite is first made from abandoned eggshell and used to remove Cd^2＋ from simulated wastewater. The adsorption experiments show that the adsorption effect is controlled by the initial concentration of Cd^2＋ , pH values in wastewater, adsorption period, the consumption of carbonate hydroxylapatite and the reaction temperature. The results also show that the rate of the removal of Cd^2＋ by carbonate hydroxylapatite is increased to 99.9% when the initial concentration of Cd^2＋ in wastewater is 30 mg/L, pH values is 7, adsorption period is 35 min, and the reaction temperature is 35℃. The test proves the adsorption equation is in accordance with Freundlich.

关 键 词： 碳羟基磷灰石 吸附 特性

领　　域： [环境科学与工程] [建筑科学]