Published Use of ion exchange for removal of Ammonium: A biological regeneration of zeolite by Rahmani A.R. and Mahvi A.H. 146-150_RAHMANI_396_8-2.pdf
Published Copper, nickel and zinc removal by peanut hulls: batch and column studies in mono, tri-component systems and with real effluent by Oliveira F.D. , Soares A.C., Freitas O.M. and Figueiredo S.A. 206-214_697_Figueiredo_12-2.pdf