纳米无定型磷酸钙对胡敏酸的吸附研究

魏巍; 江玲

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Study the Adsorption of Humic Acid by Nano-amorphous Calcium Phosphate

首发时间：2017-04-25

WEI Wei ¹
WEI Wei (1983-), male, Associate professor, main research direction is the environmental applications of nanomaterials
JIANG Ling ¹

1、School of Environment, Nanjing Normal University, Nanjing 210023

Abstract：In this work, stabilized nano-amorphous calcium phosphate (nACP) was prepared using polyethylene glycol as stabilizer to obtain a nanosized amorphous adsorbent. The produced nACP was characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Scanning Electron microscopy (SEM). The adsorption efficiency of the adsorbent for the removal of humic acid (HA) was evaluated under the effects of medium pH, contact time, temperature and ionic strength. The results of the study showed very good adsorption performance towards aqueous HA. The Sips modeling results revealed that the stabilized nACP adsorbent had a considerably high adsorption capacity (248.3 mg/g) for HA at 298 K. The adsorption data fitted well into pseudo-second order and Elovich kinetic models. By taking into account all results it was concluded that the nACP adsorbent leveraged its stability in combination with its high uptake capacity to offer a great promise for the removal of HA from aqueous solution.

keywords： environmental engineering nano-amorphous calcium phosphate adsorbent kinetics and isotherms humic acid

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纳米无定型磷酸钙对胡敏酸的吸附研究

魏巍 ¹
WEI Wei (1983-), male, Associate professor, main research direction is the environmental applications of nanomaterials
江玲 ¹

1、南京师范大学环境学院，南京210023

摘要：本文利用聚乙二醇作为稳定剂成功地制备了纳米无定型磷酸钙（nACP），并利用X射线衍射、红外光谱和扫描电镜对样品进行了表征。将nACP用作吸附剂研究了溶液pH、接触时间、温度和离子强度对nACP吸附胡敏酸（HA）的影响。结果表明nACP对HA有良好的吸附性能，且吸附行为符合Sips吸附等温线，在298K时的最大吸附容量达248.3mg/g。吸附动力学符合准二级和Elovich动力学模型。因此nACP可以作为一种高效吸附剂用于水中HA的去除。

关键词：环境工程纳米无定型磷酸钙吸附剂动力学和等温线胡敏酸

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1. Research Fund for the Doctoral Program of Higher Education （20133207120019）

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WEI Wei,JIANG Ling. Study the Adsorption of Humic Acid by Nano-amorphous Calcium Phosphate[EB/OL]. Beijing:Sciencepaper Online[2017-04-25]. https://www.paper.edu.cn/releasepaper/content/201704-414.

No.4725688119383814****

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论文编号	201704-414
论文题目	纳米无定型磷酸钙对胡敏酸的吸附研究
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