PHYTOREMEDIATION: A METHOD TO REDUCE METAL IONS PRESENT IN WASTE WATER

Heavy metal pollution is a worldwide concern; its severity and degree of pollution vary from place to place Metal contamination can be carried with soil particles get carried away from the original areas of pollution by wind and rain. The heavy metals which are mostly found in mining waste include arsenic, cadmium, chromium, copper, lead, nickel, and zinc, all of which cause risks for human health and the environment. Industrial waste water also adds to this problem. When waste water comes in contact with soil it pollutes it as well. Prolonged exposure and higher buildup of such heavy metals have harmful health effects on soil, human life, water bodies and aquatic biota. The discharge of these metals without suitable treatment creates a major risk to human health. There are several methods to remediate or reduce the concentration of heavy metal pollution. The physicochemical processes include chemical precipitation, reverse osmosis, and ion exchange method. Each and every method has its merits and demerits and apart from this they are capital intensive as well. During past few years Phytoremediation is gaining importance as one of the green technology to remediate metal ion pollution. Phytoremediation is the use of green plants to clean-up contaminated hazardous waste sites and water. It is an in situ method in which various types plants are used to transfer, remove and destroy the contaminants from soil and water. The present research work is focused on minimizing lead ions present in soiled contaminated by waste water of chemistry laboratory using Phytoremediation done by Indian Mustard plant