Theo quan điểm của tần số xảy ra groundwaters có nội dung asen cao ở nhiều nước, trong đó có một số các nước đang phát triển nghèo nhất, sự phát triển của một hệ thống rẻ tiền và hiệu quả để loại bỏ arsenate từ nước uống là điều cần thiết. Điều trị trong nước và nước thải với phế liệu rắn công nghiệp để loại bỏ adsorptive asen cung cấp một cách tiếp cận có khả năng costeffective và bền vững. | Natural Arsenic in Groundwater Occurrence Remediation and Management -Bundschuh Bhattacharya and Chandrasekharam eds 2005 Taylor Francis Group London ISBN 04 1536 700 X Comparing the arsenic sorption capacity of Bauxsol and its derivatives with other sorbents H. Genẹ-Fuhrman Environment Resources Technical University of Denmark DTU Lyngby Denmark D. McConchie Southern Cross University Centre for Coastal Management East Lismore . Australia O. Schuiling Institute of Earth Sciences Utrecht Netherlands ABSTRACT In view of the frequency of occurrence of groundwaters with high arsenic contents in many countries including several of the poorest developing countries the development of an inexpensive and efficient system for arsenate removal from drinking water is essential. Treatment of water and effluents with solid industrial residues for adsorptive removal of arsenic offers a potentially costeffective and sustainable approach. Herein promising sorbents have been developed by the authors from seawater-neutralised bauxite refinery residues Bauxsol including acid treated Bauxsol ATB acid and heat treated Bauxsol AB Bauxsol coated sand BCS and AB coated sand ABCS . A comparison of the affinity of commonly used adsorbents towards arsenic with that of the sorbents developed by the authors shows that the sorptive capacity of the new materials is comparable to or better than that of alternative materials. Because the raw material for the developed sorbents red mud is originally an industrial residue the developed sorbents should be readily available and inexpensive compared to alternative materials and their use will enhance resource use efficiency. 1 INTRODUCTION Arsenic As contamination of drinking water is a major health concern because drinking arsenic contaminated water even at quite low concentrations is linked to several types of cancers. Consequently increasingly stringent legislation on the permissible concentrations of arsenic in drinking water has led to .
