地质学报（英文版）2008，Vol.82Issue(6)：1223-1228,6.
Removal of Lead, Copper, Zinc and Cadmium from Water Using Phosphate Rock
Removal of Lead, Copper, Zinc and Cadmium from Water Using Phosphate Rock
摘要
Abstract
Removal of Pb2+,Cu2+,Zn2+ and Cd2+ from aqueous solutions by sorption on a natural phosphate rock (FAP) was investigated. The effects of the contact time and initial metal concentration were examined in the batch method. The percentage sorption of heavy metals from solution ranges generally between 50% and 99%. The amount of sorbed metal ions follows the order Cu>Pb>Cd>Zn. Heavy metal immobilization was attributed to both surface complexation of metal ions on the surface of FAP grains and partial dissolution and precipitation of a heavy metal-containing phosphate. The very low desorption ratio of heavy metals further supports the effectiveness of FAP as an alternative and low-cost material to remove toxic Pb2+, Cu2+, Zn2+ and Cd2* from polluted waters.关键词
heavy metal ions/phosphate rock/sorptionKey words
heavy metal ions/phosphate rock/sorption分类
天文与地球科学引用本文复制引用
Alessia CORAMI,Silvano MIGNARDI,Vincenzo FERRINI..Removal of Lead, Copper, Zinc and Cadmium from Water Using Phosphate Rock[J].地质学报（英文版）,2008,82(6):1223-1228,6.基金项目
This study corresponds partly to the Ph.D. research of A. Corami. Financial support was partially from the CNR-IGG-Roman Branch. The authors thank T. Coppola and S. Stellino for their laboratory assistance. （）
