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Paper Details

A Review on Removal of Heavy Metal Ions from Wastewater by Rice Husk as an Adsorbent

K. Srinivas Raju1*and S.V. Naidu2

Journal Title:Journal of Chemical, Biological and physical sciences

The use of agricultural waste has been widely investigated as a replacement for current costly methods of removing heavy metals from water and wastewater. It is well known that cellulosic waste materials can be obtained and employed as cheap adsorbents and their performance to remove heavy metal ions can be affected upon chemical treatment. In general, chemically modified plant wastes exhibit higher adsorption capacities than unmodified forms. Numerous chemicals have been used for modifications which include mineral and organic acids, bases, oxidizing agent, organic compounds, etc. In this review, rice husks have been compiled to treat the heavy metals as Cd, Cu, Hg, Cr, Pb, Zn and Ni.