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.
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, 2014,31(6): 18-23
2014, Vol. 31 
