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中文摘要：
利用红外光谱、扫描电子显微镜、X射线衍射仪等测试技术对脲素和蛋壳制成的碳羟基磷灰石（carbonate hydroxylapatite,CHAP）样品表面化学组成进行了表征,并考察了pH值、吸附时间和苯胺浓度对CHAP吸附水中苯胺的影响,以及其吸附动力学和热力学特征。结果表明：当pH=6,吸附时间为60min,苯胺初始浓度为30mg/L,CHAP对苯胺的吸附效果更好。该过程可用Langmuir Freundlich等温式进行描述,但更符合Freundlich经验公式。分别采用准一级动力学模型和准二级动力学模型考察吸附动力学行为,2个模型与实验数据之间有很好的相关性。吸附热力学行为表明该吸附过程是放热和自发的。
英文摘要：
Carbonate hydroxylapatite（CHAP） synthesized from abandoned eggshell and urea was characterized by Fourier transform infrared spectra,scanning electron microscope and X-ray diffractometer.The effects of pH value,adsorption period and aniline initial concentration on the adsorption performance of aniline from aqueous solution onto CHAP were investigated.The results show that absorption performance is better when pH is equal to 6,adsorption period is 60min and aniline initial concentration is 30mg/L.The equilibrium sorption can be described by the Langmuir and Freundlich isotherm model.However,the Freundlich model fits better than the Langmuir model.The adsorption kinetics was tested with the pseudo-first-order and pseudo-second-order reaction model. The two kinetics models provide good correlation with the experimental data.The adsorption of aniline on CHAP is endothermic and spontaneous.
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