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 Basic dyestuffs removal from textile effluents using feathers: equilibrium, kinetic and column studies by Sousa J., Freitas O. M. and Figueiredo S. A. 100-107_820_Figueiredo_14-1.pdf