TOXIC HEAVY METAL REMOVAL FROM WATER USING SOME ADSORBENTS

Abstract

The heavy metals” has been widely and continuously used over the past two decades. It is often categorized as a group of metals and semimetals (metalloids) that have been associated with contamination and potential toxicity or ecotoxicity to humans. High exposure to heavy metals in human beings occurs through industrial activities in the last century. The most common heavy metals that cause human poisonings include chromium, Mercury, cadmium, arsenic, and lead. Removal of toxic metals and their prevention before their discharge into an open water body in wastewater treatment is a serious and difficult challenge. As a consequence, the method of adsorption is a convenient, cost-ineffective, rapid process. Adsorption is done by using various adsorbents like commercially available and bio adsorbents. However, bio adsorbent has more efficacy to remove the heavy metals from wastewater and it is the most effective and cheap option for waste water treatment than commercial adsorbent.