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Chemcial Industry and Engineering 2014, Vol. 31 Issue (6) :18-23    DOI: doi: 10.13353/j.issn.1004.9533.2014.06.004
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Al-MCM-41 Materials Synthetized by Kaolin for Efficient Removal of Phosphate after Modifying by Lanthanum
 ZHANG  Hui, DING  Tong, MA  Zhi, QI  Xiao-Zhou, LIU  Yu-Lan
School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

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Abstract The novel phosphate adsorbents were prepared through impregnating lanthanum onto the synthesized Al-MCM-41 by using coal-Kaolin as the whole silica and aluminum sources, to obtain a high adsorption capacity and P removal rate. In this paper, effects of different carriers and loading quantities on the phosphate adsorption capacity were investigated. The morphology Al48-MCM-41 has a very regular and one dimensional pore channel providing a better space as the host for loading lanthanum oxides. The phosphorus adsorption of La15-Al48-M41 linearly increases with adsorption time, then increase slowly, finally the phosphorus adsorption tends to saturation and the adsorption quantity is 60.43 mg/g. When dosing quantity is 0.12 g, phosphorus removal rate is 96.01%. By comparing the pH value varieties of different initial pH value, we concluded that the functional ion exchange between —OH on the surface of adsorbents and phosphate existed was the main reason for phosphate removal.
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Articles by authors
ZHANG Hui
DING Tong
MA Zhi
QI Xiao-Zhou
LIU Yu-Lan
Keywordsphosphate;   coal-Kaolin;   mesoporous materials;   adsorption     
Received 2013-02-26;
Fund:

化学工程联合国家重点实验室开放课题资助(SKL-CHE-09A03);天津大学自主创新基金(2010XJ-0047)。

Corresponding Authors: 丁彤,电话:(022)27401451,E-mail:d_tong@tju.edu.cn。      Email: d_tong@tju.edu.cn
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ZHANG Hui, DING Tong, MA Zhi, QI Xiao-Zhou, LIU Yu-Lan.Al-MCM-41 Materials Synthetized by Kaolin for Efficient Removal of Phosphate after Modifying by Lanthanum[J]  Chemcial Industry and Engineering, 2014,V31(6): 18-23
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