作　　者： ; ; ; ; ; ;

机构地区： 湖南大学环境科学与工程学院

出　　处： 《化工环保》 2006年第4期325-328,共4页

摘　　要： 以废弃蛋壳为原料、尿素为添加剂,采用掺杂技术制备碳羟磷灰石(CHAP),并用其作吸附剂去除水中的Cu2+。考察了Cu2+的初始质量浓度、pH、吸附时间、CHAP加入量及温度等因素对CHAP吸附Cu2+效果的影响。实验结果表明,在温度40℃、溶液pH6、搅拌1h后静置1h的条件下,用5g/L的CHAP处理Cu2+初始质量浓度为60m g/L的水溶液,Cu2+去除率为99.30%。吸附等温线基本符合Freund lich和Langm u ir方程。 Carbonate hydroxylapatite （CHAP）was prepared by doping technology using abandoned eggshell as material and urea as additive. The product was used as adsorbent to remove Cu^2＋ from water. The factors affecting the adsorption of Cu^2＋ were studied, such as Cu^2＋ initial mass concentration ,pH, adsorption time, CHAP dosage and temperature. The experimental results show that under the conditions of 40 ℃, pH 6, stirring for 1 h and standing for 1 h, the removal rate of Cu^2＋ is 99.30% after the Cu2. solution with 60 mg/L of Cu^2＋ initial mass concentration is treated by 5 g/L of CHAP. The adsorption isotherm is mainly in accord with Freundlich and Langmuir equations.

关 键 词： 碳羟基磷灰石 吸附 铜离子 废水处理

领　　域： [环境科学与工程]