1. 1. Chen, S., Zhang, J., Zhang, C., Yue, Q., Li, Y., Li, C.―Equilibrium and kinetic studies of methyl orange and methyl violet adsorption on activated carbon derived from phragmites australis‖. Desalination 252, 149e156. 2010.
   2. Dinc¸ er, A.R., Günes¸ Y., Karakaya, N., Günes¸ E. ―Comparison of activatedcarbon and bottom ash for removal of reactive dye from aqueous solution‖.Bioresour. Technol. 98, 834–839. 2007.
   3. Kadirvelu, K., Kavipriya, M., Karthika, C., Radhika, M., Vennilamani, N., Pattabhi, S. ―Utilization of various agricultural wastes for activated carbonpreparation and application for the removal of dyes and metal ions fromaqueous solutions. Bioresour‖. Technol. 87, 129–132. 2003
   4.  Shen, D., Fan, J., Zhou, W., Gao, B., Yue, Q., Kang, Q. Adsorption kinetics andisotherm of anionic dyes onto organo-bentonite from single and multisolutesystems. J. Hazard. Mater. 172, 99–107. 2009.
   5. Vinoth M., Lim H. Y., Xavier R., Marimuthu K., Sreeramanan S., Rosemal M. H. M. H. and Kathiresan S., ―Removal of Methyl Orange from Solutions Using Yam Leaf Fibres‖, International Journal of Chem Tech Research, Vol. 2, No. 4, pp 1892 – 1900. 2010.
   6. W.S.W.Ngah,L.C.Teong,M.A.K.M.Hanafiah, Adsorptionofdyesandheavy metal ionsbychitosancomposites:areview,Carbohydr.Poly m.83 1446–1456. 2013