Ecology, Environment and Conservation Paper

AN EMERGING ADSORPTION TECHNOLOGY AND ITSAPPLICABILITY ON TREES AS AN ADSORBENT FOR THEREMEDIATION OF WATER POLLUTION: A REVIEW

Kamesh, Brijendra Pratap Singh, Shailly Misra, Krishan Kumar Verma,Chandresh Kumar Singh5 and Rajesh Kumar

Abstract

Wastewater pollution and its treatment is an ever-increasing concern in the century because of the higherindustrialization and urbanization. The expansion of industries is the leading cause of polluting waterresources. A discharge from industries contains various organic and inorganic pollutants. The heavy metalswhich are mostly discharged from the industries include Zinc (Zn), Arsenic (As), Nickel (Ni), Cadmium(Cd), Mercury (Hg), Copper (Co), Chromium (Cr), and Lead (Pb). These metals are toxic to human healthand other living organisms. Water is an essential natural resource that reserves important flora and faunaon the earth. Therefore, it is necessary to remediate contaminated water from organic and inorganicpollutants. Chemical precipitation, ion exchange, reverse osmosis, chemical oxidation, reductionultrafiltration, electrolysis, and adsorption are some treatment processes used to remove heavy metalsfrom wastewater effluent. Adsorption is the most promising technique used for the removal of waterpollutants. This review surveys the various natural adsorbents used to remove water pollutants. Naturaladsorbents are the most effective and low-cost adsorption techniques in which plant residuals (leaves,stems, roots, straw, etc.) are used to remove water pollutants from wastewater.