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中文摘要：
利用废弃的鸡蛋壳为主要原料合成碳羟磷灰石（CHAP）。用以去除废水中的Zn^2＋。分别考查了废水中Zn^2＋的初始浓度、CHAP的用量、pH值、温度及作用时间等因素对CHAP去除Zn^2＋的吸附效果的影响以优化吸附条件。结果表明，用2．5g／L的CHAP处理Zn^2＋的质量浓度为100mg／L的废水，40℃条件下，处理45min，Zn^2＋的去除率可达98．67％。最佳pH值为6～7。同时探讨了CHAP对重金属离子Zn^2＋的吸附机理。吸附机理研究表明．CHAP对Zn^2＋的主要吸附形式为离子交换吸附和表面吸附。
英文摘要：
Carbonate hydroxylapatite（CHAP）, synthesized with eggshell waste as the main material, was used to remove Zn^2＋ from wastewater. The effects of initial concentration of Zn^2＋, dosage of CHAP, pH value, temperature, reaction time and some other factors on the adsorption performance of CHAP for Zn^2＋ and the optimization of adsorption condition were investigated respectively. The results showed that, using 2.5 g/L of CHAP to treat wastewater whose mass concentration was 100 mg/L at 40 ℃ within 45 minutes, the removal rate of Zn^2＋ could reach 98.67%, and the optimal pH value was 6 - 7. The adsorption mechanism of CHAP for heavy metal ion Zn^2＋ was discussed at the same time, which indicated that, the main forms of Zn^2＋ adsorption by CHAP were ion exchange adsorption and surface adsorption.
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