期刊名称：Research Journal of Environmental and Earth Sciences
印刷版ISSN：2041-0484
电子版ISSN：2041-0492
出版年度：2013
卷号：5
期号：07
页码：370-380
出版社：Maxwell Science Publications
摘要：This study deals with the potential of Iraqi Rice Husk (IRH) for the removal of nine heavy metal pollutants which are Al, As, Cd, Cr, Cu, Fe, Ni, Pb and Zn ions from industrial wastewater using different design parameters by the adsorption process. Samples were taken of the IRH remaining after being used for the removal of the nine metal ions above from aqueous solutions using different methods. One of these methods was the preparation of a promoted type Y-zeolite catalyst which was compared with normally type Y-zeolite catalyst prepared from IRH alone and tested in the process of n-heptane isomerization under different temperatures. Another method involved the study of IRH as a rodenticide directly without any pre treatment. The results show that the promoted type Y-zeolite catalyst by Cd+2, Cr+6, Cu+2, Fe+3, Ni+2 and Zn+2 ions gives a higher conversion and better selectivity of n-heptane isomerization than the normal type Y-zeolite catalyst and the IRH which had previously adsorbed Al+3, As+5, Zn+2, and Pb+2 from an aqueous solution and also showed good behavior as a rodenticide.
关键词：Adsorption ; catalyst ; heavy metal ; residue ; rice husk ; wastewater ; zeolite
