由磷石膏微波辐照制备羟基磷酸钙  

Preparation of Hydroxyapatite from Phosphogypsum by Microwave Radiation

作　　者：张德懿[1] 朱家灿[1] 王建斌[1] 胡晓斌[1] 

机构地区：[1]兰州理工大学石油化工学院,兰州730050

出　　处：《粉煤灰综合利用》2012年第1期28-30,共3页Fly Ash Comprehensive Utilization

基　　金：国家大学生创新性实验计划项目

摘　　要：以工业废弃物磷石膏为原料,结合微波辐照技术制备了具有较高纯度和结晶度的羟基磷酸钙(HAP)。考察了EDTA添加量,微波功率,反应时间及反应温度对产物形貌和形态的影响。其结果显示当Ca2+/EDTA比例为1:1.5时,所制备的HAP具有较高的纯度和发达的孔隙。当微波功率为500W,辐照时间4h,反应温度50℃时,所制备的HAP具有最佳的结晶性。所制备的HAP在治理重金属离子及F-污染水体方面具有广泛的潜在用途。Phosphogypsum（PG） was utilized as a raw material to prepare hydroxyapatite（HAP） with high purity and crystallinity by microwave radiation.The effect of EDTA,microwave power,reaction time and temperature on the structure and crystallite of the prepared hydroxyapatite was investigated.The results show that the hydroxyapatite have higher purity and developed porosity when the proportion of Ca2＋ and EDTA reachs 1：1.5.The prepared hydroxyapatite has the optimal crystallinity as the microwave power is 500W,reaction time 4h and reaction temperature 50℃.The prepared hydroxyapatit has extensively potential applications in the removal of heavy metals ions and F-in waster water.

关 键 词：磷石膏 羟基磷酸钙 微波辐照 EDTA 

分 类 号：TQ177.37[化学工程—硅酸盐工业]