6Huisman J.L.,Schouten G,Schultz C.Biologically produced sulphide for purification of process streams,effluent treatment and recovery of metals in the metal and mining industry. Hydrometallurgy . 2006
7Liu Y,Sun C,Xu J,Li Y.The use of raw and acid-pretreated bivalve mollusk shells to remove metals from aqueous solutions. Journal of Hazardous Materials . 2009
8CHANG Q,WANG G.Study on the macromolecular coagulantPEX which traps heavy metals. Chemical Engineering Science . 2007
9Fu F,Wang Q.Removal of heavy metal ions from wastewaters:A review. Journal of Environmental Management . 2011
10Gonz偄lez-Mu oz M J,Rodr姫guez M A,Luque S,etal.Recovery of heavy metals from metal industry waste waters bychemical precipitation and nanofiltrationDesalination,2006.