{"title":"Study of Methylene Blue Dye Adsorption on to Activated Carbons from Olive Stones","authors":"L. Temdrara, A. Khelifi, A. Addoun ","volume":82,"journal":"International Journal of Chemical and Molecular Engineering","pagesStart":722,"pagesEnd":725,"ISSN":"1307-6892","URL":"https:\/\/publications.waset.org\/pdf\/17034","abstract":"
Activated carbons were produced from olive stones by a chemical process. The activated carbon (AC) were modified by nitric acid and used as adsorbents for the removal of methylene blue dye from aqueous solution. The activated carbons were characterized by nitrogen adsorption and enthalpy of immersion. Batch adsorption experiments were carried out to study the effect of initial different concentrations solution on dye adsorption properties. Isotherms were fitted to Langmuir model, and corresponding parameters were determined. The results showed that the increase of ration of ZnCl2<\/sub> leads to increase in apparent surface areas and produces activated carbons with pore structure more developed. However, the maximum MB uptakes for all carbons were determined and correlated with activated carbons characteristics. <\/p>\r\n","references":"[1] Srivastava S, Sinha R, Roy D. Toxicological effects of Malachite Green. \r\nAquatic Toxicol 2004; 66: 319-29. \r\n[2] Garg VK, Amita M, Kumar R, Gupta R. Basic dye (methylene blue) \r\nremoval from simulated wastewater by adsorption using Indian \r\nRosewood sawdust: a timber industry waste. Dyes Pigments 2004; \r\n63(3): 243-50. \r\n[3] S. Brunauer, P.H. Emmett, E. Teller, Adsorption of Gases in \r\nMultimolecular Layers, J. Am. Chem. Soc. 60(2) (1938) 309\u2013319. \r\n[4] M.M. Dubinin, Progress in Surface and Membrane Science, Academic \r\nPress London 9, J. W. Patrick, (1975). \r\n[5] R. Denoyel, J. Fernandez-Colina, Y. Grillet, J. Rouquerol, Assessment \r\nof the surface area and microporosity of activated charcoals from \r\nimmersion calorimetry and nitrogen adsorption data, Langmuir 9 (1993) \r\n515\u2013518. \r\n[6] J. Silvestre-Albero, C. G\u00f3mez de Salazar, A. Sep\u00falveda Escribano, F. \r\nRodr\u00edguez-Reinoso, Characterization of microporous solids by \r\nimmersion calorimetry, Colloids and Surfaces A: Physicochem. Eng. \r\nAspects (2001) 187\u2013188:151\u2013165. \r\n[7] I. Langmuir, The adsorption of gases on plane surfaces of glass, mica \r\nand platinum, J. Am. Chem. 57 (1918) 1361\u20131403. \r\n[8] K.S.W. Sing, D.H. Everett, R.A.W. Haul, L. Moscou, R.A. Pierotti, J. \r\nRouquerol, T. Siemieniewska, Reporting Physisorption Data for \r\nGas\/Solid Systems with Special Reference to the Determination of \r\nSurface Area and Porosity, Pure Appl. Chem. 57 (1985) 603\u2013619.","publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 82, 2013"}