Remediation of Chromium and Other Heavy Metals (Pb,Ni) in Tannery Waste

Several approaches are currently being used for the prevention, control and remediation of soil contaminated with toxic metals. These include, (a)land filling - excavation, transport and deposition of contaminated soil in a permitted land fill site (b) chemical immobilization of heavy metals by the application of ameliorants like lime, farmyard manure (FYM), phosphates, manganese oxides etc., (c) leaching - using acid solutions or complexing leachants (EDTA etc.) to desorb and leach metals from ...