【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.更多还原

【Abstract】 Carbonate hydroxylapatite is first made from abandoned eggshell and used to remove Cd²⁺from simulated wastewater.The adsorption experiments show that the adsorption effect is controlled by the initial concentration of Cd²⁺,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 Cd²⁺by carbonate hydroxylapatite is increased to 99.9% when the initial concentration of Cd²⁺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.更多还原