A Review of Techniques for Arsenic Removal From Water

Abstract

This chapter presents information on water, arsenic, arsenic in water, and its removal techniques from water and wastewaters. Survey of literature was conducted, and information was collected from published articles in databases (Google Scholar, PubMed, Elsevier, Scopus, Springer, and Magiran) using arsenic removal, wastewater treatment methods for arsenic removal, and pollution control as the keywords. A total of 142 articles were used for the study. The study revealed that techniques of arsenic removal can be divided into non-destructive and destructive methods. It was revealed that electrochemical oxidation, adsorption, and membrane techniques are the most common and effective processes. It was concluded that nanofiltration membranes prepared through single and bilayer polyelectrolyte deposition and electrocoagulation appeared to be the best method, being able to ensure the highest percentage removal (99.9%).