Heavy metal contamination in soil and water environments is
one of the world’s major environmental problems [1,2]. Industrial
wastewaters are usually the source of heavy metals pollution of the
environment. Many plating and battery industries discharge heavy
metals such as chromium, nickel, cadmium and lead in wastewaters.
Cadmium is a heavy metal, which causes cancer and
serious health hazards through entry into the food chain. It is very
mobile in soil and can be transferred to plants and accumulated in
the roots, leaves and stems of plants [3]. A variety of traditional
methods such as precipitation, coagulation, ion exchange can be
used to remove toxic metals from industrial effluents but they are
expensive, relatively inefficient and in most cases they generate a
great amount of waste which is difficult to eliminate [4,5].
Recently, increasing interest in the application of a benign method
for removing heavy metals and dyes from discharging effluents
have resulted in the search for other alternative materials like
Heavy metal contamination in soil and water environments isone of the world’s major environmental problems [1,2]. Industrialwastewaters are usually the source of heavy metals pollution of theenvironment. Many plating and battery industries discharge heavymetals such as chromium, nickel, cadmium and lead in wastewaters.Cadmium is a heavy metal, which causes cancer andserious health hazards through entry into the food chain. It is verymobile in soil and can be transferred to plants and accumulated inthe roots, leaves and stems of plants [3]. A variety of traditionalmethods such as precipitation, coagulation, ion exchange can beused to remove toxic metals from industrial effluents but they areexpensive, relatively inefficient and in most cases they generate agreat amount of waste which is difficult to eliminate [4,5].Recently, increasing interest in the application of a benign methodfor removing heavy metals and dyes from discharging effluentshave resulted in the search for other alternative materials like
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