REFERENCES Adeiga, A.A. , Hu, L. and Greer, T., Removal o f metal ions from waste water wi th natural wastes, Hampton University, Hampton, V A 23668. Ahluwalia, S.S. and Goyal, D., Removal o f heavy metals by waste tea leaves from aqueous solution, Eng. Life Sci., 5, No. 2, 158-162, 2005. Albanis, T.A. et. al., Removal of dyes from aqueous solutions by adsorption on mixtures of f ly ash and soil in batch and columns techniques, 2, 3, 237-244, 2000. Amarasinghe, B.M.W.P.K. and De Silva, I .M.B.M., Application o f membrane separation process to the Sri Lankan industry, seminar proceeding ERU symposium, University o f Moratuwa, 2000. Amarasinghe, B.M.W.P.K. and DeSilva, I .M.B.M., Use o f waste biomass for colour removal from textile effluent, SLASS Abstract, University o f Moratuwa, 2001. Amarasinghe, B.M.W.P.K. and Gangodavilage, N.C., Adsorbents from waste biomass production and application, IChemE - 7 t h world congress o f chemical eng, 10-14, July 2005. Armagan ,B., Turan, M . and Celic, S. M., Equilibrium studies on the adsorption o f reactive azo dyes into zeolite, Desalination, 170, 33-39, 2004. Aslam, M . M . et. al., Removal of copper from industrial effluent by adsorption wi th economical material, Electron. J. Environ.Agric.Food Chem., 3, 2, 2004. Babu, B.V. and Ramakrishnan, V., CHM-047, Ranking of adsorbents based on method o f preparation and Freundlich Isotherm, Balasubramanian, M.R. and Muralisankar, I, Util ization o f f ly ash and tea waste ash as decolourising agents for dye effluents, Indian Journal o f Technology, 25, 471-474, Oct 1987. 74 Cheng, T. et. al., Prediction o f breakthrough curves for adsorption on activated carbon fibers in a f ixed bed, Carbon, 42, 3081-3085, 2004. Chio, M. S., Ho, P. Y. and L i , H .Y., Adsorption behaviour o f dye A A V N and RB4 in acid solutions on chemically cross linked chitosan beads, J.Chin.Inst-Chem.Engrs, 34, 6, 625-634, 2003. Chuah, T.G. et. al., Rice husk as a potentially low cost biosorbent for heavy metal and dye removal: an overview, Desalination, 175, 305-316, 2005. Coulson J.M and Richardson J.F, Chemical Engineering Volume 2, Oxford, Butterworth-Heinemann, 1991. Duangrat Inthorn et al, Decolorization o f basic, direct and reactive dyes by pre- treated narrow-leaved cattail 299-306, 2004. Ferraiolo, G., Z i l l i , M . and Converti, A., Fly ash disposal and utilization, J.Chem. Tech. Biotechnol, 47, 281-305, 1990. Gaikwad, R.W., Removal of Cd(ii) from aqueous solution by activated charcoal derived from coconut shell, EJEAF, 2004. Jain, A.K. et. al., Util ization of industrial waste products as adsorbents for the removal of dyes, Journal of Hazardous materials, B 101, 31-42, 2003. Kaushik C.V, Chemical processing o f textiles, New Delhi, Ncute publication, 2003. Khal i l , L.B. and Girgis, B.S., Adsorption characteristics o f activated carbon obtained from rice husks by treatment wi th phosphoric acid, Fuel science and Technology, 13,4, 131-136, Oct 1994. Kumar, B.G.P., Miranda, L.R., and Velan, M., Adsorption o f Bismark brown dye on activated carbons prepared from rubber wood sawdust using different activation methods, Journal o f Hazardous materials, B 126, 63-70, 2005. 75 Kumar, S., Upadhyay, S.N. and Upadhya, Y.D., Removal o f phenols by adsorption on f ly ash, J. Chem Tech. Biotechnol, 37, 281-290, 1987. L in , S.H., Adsorption o f disperse dye by various adsorbents, J.Chem. Tech. Biotechnol, 58, 159-163, 1993. Lodha, A. et. al, Sorption of methylene blue on to rice husk, IJEP, 17, 9, 675- 679, Se. July 1997. Maccgi, G., Marani, D. and Tirivanthi, G., Uptake o f mercury by exhausted coffee grounds, Environ. Technolo. Lett.,, 7, 431-444, 1986. Mahvi , A .H . et. al., Tea waste as an adsorbent for heavy metal removal from industrial waste waters, American J. o f Applied Sciences, 2(1): 372-375, 2005. Markovska, L et.al., Solid diffusion control of the adsorption o f basic dyes onto g T a n u l a r activated carbon and natural zeolite in fixed bed columns, J.Serb.Chem.Soc, 66, 7 ,463-475,2001 Mal l , I.D. and Kumar, V., Removal of organic matter from distillery effluent using low cost adsorbent, Exicom India, X X X I I , 7, July 1997. Marmagne, C Coste, Colour removal from textile plant effluents, American dyestuff reporter, 15-21, Apr i l 1996. Mckay, G., Bkair, H.S. and Gardner, J.R., The adsorption o f dyes onto chitin in fixed bed columns and batch adsorbers, J.Appl.Polymer sci., 29, 1499-1514, 1984. Mit ta l , A., Krishnan, L. and Gupta, V.K., Removal and recovery o f malachite green from wastewater using an agricultural waste material, de-oiled soya, Separation and Purification Technology, 43,125-133, 2005. Moura, L.M.A. et.al., Adsorption of yellow lanasol 4g reactive dye in a simulated textile effluent on gallinaceous feathers, EWA,2004. 76 Nakamura, T. et.al., Decolorization of acidic dye by charcoal from coffee grounds, Journal o f health science, 49, 6, 520-523, 2003. Nei l l , O.C. et.al. Review color in textile effluents, sources, measurements, discharge consents and simulation, J Chem Technol Biotechnol, 74, 1009-1018, 1999. Netpradit, S., Thiravetyan, P. and Towprayoon, Evaluation o f metal hydroxide sludge for reactive dye adsorption in a fixed bed column system, Water research, 38,71-78, 2004. Olaofe, O. and Bosch, H., The production and Characterization o f activated carbon from tropic carbonaceous materials, Chemical Age o f India, 31 , 3, 238- 241, March 1980. Othman, F., Salim, M.R. and Sohaili, J., Adsorption process for industrial wastewater using local available material. Ozean, S.A. and Ozean, A., Adsorption of acid blue 294 from aqueous solution onto white sepiolite, proceeding book- 4 t h A A C D congress. Turkey, 560-562, 2004. Padmini, K.D, Sri Lanka (2), Industrial development board, 207-219, 2002. Rahman, A. and Saad, B., Util ization o f Guava Seeds as a Source o f Activated Carbon for Removal of Methylene Blue from Aqueous Solution, Malaysian journal of chemistry, 5, 1, 08 -14 , 2003. Ramakrishna K.R. and Viraraghavan, T., Dye removal using low cost adsorbents, Wat.Sci. Tech, 36, 2-3, 189-196, 1997. Saha, J. C , Dikshit, K. and Bandyopadhyay, M. , Comparative studies for selection o f technologies for arsenic removal from drinking water, 76-84. Samuel D Faust and Osman M Aly, Adsorption processes for water treatment, Stoneham, Butterworth publishers, 1987. 77 Santhy, K. and Selvapathy, P., Removal os reactive dyes from wastewater by adsorption on coir pith activated carbon, Bioresource technology X X X , 2005. Sapci, Z. and Ustun, B., The removal o f color and COD from textile wastewater by using water pumice, Electron. J. environ.agric.food chem., 2, 2, 1579-4377, 2003. Shi, W., X u , X. and Sun, G., Chemically modified sunflower stalks as adsorbents for color removal from textile waste water, J. o f app. Polymer Sc. 71 , 1841-1850, 1999. Shukla, A. et. al., The role of sawdust in the removal o f unwanted materials from water, Journal o f Hazardous materials, B 95, 137-152, 2002. Somboon W., Pennapa M. and Puritud T., Removal o f coloured waste water generated from hand made textile weaving industry. Sontheimer, Cittenden and Summers, Activated carbon for water treatment, Karlsruhe, D V G W Forschungsstelle, 1988. Strik, W.A. and Staden J. van, Removal o f heavy metals from solution using dried brown seaweed material, Botanica Marina, Vo l 43,467-473, 2000. Sun, G. and Shi, W., Sunflower stalks as adsorbents for the removal of metal ions from wastewater, Ind. Eng. Chem. Res., 37, 1324-1328, 1998. Sun, G. and Xu , X., Sunflower stalks as adsorbents for color removal from textile waste water, Ind. Eng. Chem. Res., 36, 808-812, 1997. Tee, T.W. and Khan, R.M., Removal of lead, cadmium and zinc by waste tea leaves', Environ. Technol. Lett., 9, 1223-1232, 1988. Treybal R.E, The mass transfer operations, New York, McGraw H i l l , 1968. 78 Uzun, I. and Guzel, F., Adsorption of some heavy metal ions from aqueous solution by activated carbon and comparison o f percent adsorption results of activated carbon wi th those o f some other adsorbents, Turk J. Chem., 24, 291- 297, 2000. Vanjara, A.K., Colour removal from textile effluent using refuse derived fuel as an adsorbent, Indian Journal of Technology, 5, 53-55, Jan 1998. Viraraghavan, T. and Ramakrishna, K.R., Fly ash for colour removal from synthetic dye solutions, water Qual. Res. J. Canada, 34, 3, 505-517, 1999. Voudrias, E., Fytianos, K. and Bozani, E., Sorption-desorption isotherms o f dyes from aqueous solutions and wastewaters wi th different sorbent materials, The Int.J,4, 1, 75-83, 2002. Wafwoyo, W., Seo, C.W. and Marshall, W.E., Uti l ization o f peanut shells as adsorbents for selected metals, J. Chem. Technol. Biotechnol, 74, 1117-1121, 1999. Walker, G.M., Weatherley, L.R., Adsorption of acid dyes on to granular activated carbon in fixed beds, Wat. Res., 31 , No 8, 2093-2101, 1997. Walker, G.M., Weatherley, L.R., COD removal from textile industry effluent: pilot plant studies, Chemical Engineering journal, 84, 125-131, 2001. 79