工业石膏合成羟基磷灰石及其对Pb^2＋，Cu^2＋，Zn^2＋和Ni^2＋的吸附作用  

Preparation of Hydroxyapatite with Industrial Gypsum and Its Adsorption upon Pb^(2+),Cu^(2+),Zn^(2+) and Ni^(2+)

作　　者：刘海弟[1] 李福志[1] 赵璇[1] 陈运法[2] 

机构地区：[1]清华大学核能与新能源技术研究院,北京100084 [2]中国科学院过程工程研究所多相复杂系统国家重点实验室,北京100080

出　　处：《过程工程学报》2008年第1期42-47,共6页The Chinese Journal of Process Engineering

基　　金：中国博士后基金资助项目(编号:20060400437)

摘　　要：研究了以工业石膏为原料合成羟基磷灰石(HAp)的方法,并考察了所制备的HAp对水溶液中Pb2+,Cu2+,Zn2+和Ni2+四种金属离子的吸附作用.结果表明,在反应温度90℃、磷酸氢二铵和工业石膏物质的量比为1:2的条件下,反应24h便可以得到较纯的HAp.所制备的HAp在pH7的条件下对水溶液中的Pb2+,Cu2+,Zn2+和Ni2+均具有一定的吸收能力,其饱和吸附量分别为1095,86.76,64.68和67.90mg/g.该吸附过程符合Langmuir吸附模型.The preparation method of hydroxyapatite （HAp） with industrial gypsum was investigated. The adsorption abilities of as-prepared samples upon Pb^2＋, Cu^2＋, Zn^2＋ and Ni^2＋ ions in aqueous solution were examined. It was indicated that pure HAp could be successfully fabricated when the molar ratio of （NH4）2HPO4 to industrial gypsum was 1：2 with the reaction between them for 24 h under 90 ℃. The as-synthesized HAp exhibited obvious adsorption ability upon Pb^2＋, Cu^2＋, Zn^2＋ and Ni^2＋ ions under pH 7, and their saturated adsorption amounts were 1095, 86.76, 64.68 and 67.90 mg/g respectively. Their adsorption behaviors could be described with the Langrnuir model approximately.

关 键 词：石膏 固体废弃物 羟基磷灰石 制备 水处理 吸附 

分 类 号：TQ116.2[化学工程—无机化工]