AC has been the most used adsorbent, nevertheless it is relatively expensive. Searching for low-cost and easily available adsorbents to remove heavy metal ions have become a main research focus. To date, hundreds of studies on the use of low-cost adsorbents have been published. Agricultural wastes, industrial byproducts and wastes and natural substances have been studied as adsorbents for the heavy metal wastewater treatment. Several reviews are available that discuss the use of low-cost adsorbents for the treatment of heavy metals wastewater. Bhattacharyya and Gupta (2008) reviewed the adsorption of a few heavy metals on natural and modified kaolinite and montmorillonite. Sud et al. (2008) reviewed agricultural waste material as potential adsorbent for sequestering heavy metal ions from aqueous solutions. Wan Ngah and Hanafiah (2008) reviewed the removal of heavy metal ions from wastewater by chemically modified plant wastes as adsorbents. Babel and Kurniawan (2003) reviewed the use of lowcost adsorbents for heavy metals uptake from contaminated water.