作　　者： ; ; ; ; ; ;

机构地区： 衡阳师范学院化学与材料科学系

出　　处： 《过程工程学报》 2009年第6期1090-1094,共5页

摘　　要： 利用废弃蛋壳为原料、尿素为添加剂,合成了碳羟基磷灰石(CHAP),用于吸附水中苯酚.利用红外光谱、扫描电镜、X射线能谱测试技术对CHAP样品表面化学进行了表征,同时考察了环境pH值、吸附时间、苯酚初始浓度及温度对苯酚吸附的影响.结果表明,在酸性(pH=3～5)和碱性(pH=9～10)条件下,CHAP对苯酚的吸附效果较好,吸附过程符合Langmuir和Freundlich等温式,同时也符合准二级动力学模型. The adsorption of phenol from aqueous solution by carbonate hydroxylapatite （CHAP） synthesized using abandoned eggshell and urea was studied, and CHAP characterized by FT-IR, SEM and EDS. Influential factors of adsorption performance were investigated, such as pH value, adsorption period, phenol initial concentration and temperature from aqueous solution. The results showed that adsorption capacity for phenol was better at pH=3~5 and pH=9-10 from aqueous solution. The equilibrium adsorption data could be described by the Langmuir and Freundlich isotherm models. The first-order and pseudo-second-order kinetic models provided the better correlation of the used experimental data.

关 键 词： 碳羟基磷灰石 苯酚 吸附特性

领　　域： [理学] [理学] [环境科学与工程]