Removal of heavy metals through adsorption using sand

作     者：M. Ali Awan Ishtiaq A. Qazi Imran Khalid 

作者机构：Institute of Environmental Science and Engineering (IESE) National University of Sciences & Technology (NUST) Rawalpindi PakistanPakistan Council of Renewable Energy TechnologiesInstitute of Environmental Science and Engineering (IESE) National University of Sciences & Technology (NUST) Rawalpindi Pakistan Islamabad Pakistan 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2003年第15卷第3期

页      面：413-416页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 

主　　题：sand heavy metals adsorption 

摘      要：The removal of four heavy metals i.e. Pb, Cr, Cu, and Zn from their aqueous solutions, using ordinary sand as an adsorbent, was studied at 20℃. The amount of metal adsorbed to form monolayer on sand(a_m), obtained from Langmuir isotherm, exhibited the preference of metals for sand in the order PbCrCuZn. The heavy metal-sand adsorption phenomena can be illustrated on the basis of the interaction between surface functional group of silicates (sand) and the metal ions. It is deduced that sand can be used as a low cost adsorbent for the removal of heavy metal from wastewater (containing low conc. of metals), especially in the developing countries.