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《Environmental Science & Technology》 2012-05
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Use of MCM-41 Modified with Al and Ti Ions to Remove Cd~(2+) and Pb~(2+) from Wastewater through Adsorption

FANG Lu-xi,YU Peng,LIU Can-ming,YANG Jie,WU An-jun(Department of Applied Chemistry,Hunan Agricultural University,Changsha 410128,China)  
Al-Ti-MCM-41 and Ti-Al-MCM-4,the new adsorbing materials made by modifying MCM-41 with aluminum and titanium ions,were prepared and used as adsorbents to remove Cd2+ and Pb2+ from wastewater at a bench-scale level.The adsorption behavior of the modified MCM-41 was investigated and the results revealed the data of pore diameters and specific pore volumes of the new modified adsorbents and reported the adsorption ratios of Cd2+ and Pb2+ ions onto Al-Ti-MCM-41 i.e.,99.8% and 99.96% respectively.According to the investigation,generally adsorption capacity of Cd2+ and Pb2+ decreased with the increased adsorbent dosage while increased with increased initial concentrations of the ions;in addition,as to the effect of temperature on adsorption: the higher the better.
【CateGory Index】: X703
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