摘要
研究水热法合成羟磷灰石对水溶液中Ｐｂ２＋离子的吸附性能．间歇法吸附实验结果表明，在ｐＨ＜３．５、实验温度２５℃、搅拌时间ｔ＞２ｈ的条件下，羟磷灰石对Ｐｂ２＋浓度１０００～４０００ｍｇ／Ｌ溶液中铅的吸附容量可达２００ｍｇ／ｇ，除铅效率超过９５％．羟磷灰石对铅的去除过程涉及溶液中Ｐｂ２＋与晶格中Ｃａ２＋的离子交换，Ｐｂ２＋进入晶格形成铅磷灰石新相．
The removal behavior of cation Pb^2+ in aqueous solution by hydrothermal synthetic hydroxyapatite(Hap) has been investigated using batch method.When stirring time is more than 2 hours and pH<3.5,temperature is about 25℃,Hap can remove 400 mg/g Pb^2+ from solution with 4 000 mg/L concentration.after the reaction lead hydroxyapatite has been formed according to the data of Xray diffraction,infrared spectra and thermal analysis.It is suggested that there be a cation exchange between the Pb^2+in solution and Ca^2+in Hap crystal lattice.
出处
《武汉化工学院学报》
1998年第1期39-42,共4页
Journal of Wuhan Institute of Chemical Technology
