会议专题

EFFECT OF Fe3+ LOADING BY DIRECT HYDROTHERMAL TECHNIQUE INTO RH-MCM-41 FOR ARSENATE REMOVAL

Agrowaste of rice husk (RH) was modified for mesoporous molecular sieves, MCM-41. The arsenate adsorption by an adsorbent produced by loading of Fe 3+ into RH-MCM-41 using the direct hydrothermal technique (DHT) was investigated. Studied affecting factors on arsenate adsorption capacity were Fe 3+ content in RH-MCM-41, contact time, pH solution, and initial arsenate concentration. It was found that Fe-RH-MCM-41 at the mole ratio Si/Fe of 10 gave the highest adsorption capacity. The arsenate adsorption reached equilibrium within 4 h. The adsorption capacity of Fe-RH-MCM-41 (DHT-10) was affected by the initial pH value and the initial arsenate concentration. The adsorption capacity was highest at pH 3 and decreased with increasing in the pH solution value. Langmuir model was fit well for arsenate adsorption isotherm. The maximum adsorption capacity for arsenate was 1,111 μg/g.

DHT-Fe-RH-MCM-41 Rice husk Arsenate Adsorption.

K. Wantala B. Srinameb S. Sthiannopkao K. W. Kim N. Grisdanurak

Department of Chemical Engineering, Faculty of Engineering, Thammasat University,Pathumthani 12120, Department of Chemical Engineering, Faculty of Engineering, Thammasat University,Pathumthani 12120, International Environmental Research Center (IERC), Gwangju Institute of Science and Technology (GIS Department of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GI Department of Chemical Engineering, Faculty of Engineering, Thammasat University,Pathumthani 12120,

国际会议

The 12th Asian Pacific Confederation of Chemical Engineering Congress(第十二届亚太化工联盟大会暨化工展览会)

大连

英文

2008-08-04(万方平台首次上网日期,不代表论文的发表时间)