CATIONIC DYE ADSORPTION ONTO VARIOUS NATURAL ADSORBENTS.
الكلمات المفتاحية:
Methylene blue، adsorption، Activated carbon، Bentonite، Kaolin، Animal charcoal، Wood charcoalالملخص
The present study investigated the adsorption behavior of Methylene Blue dye from aqueous solution onto Activated carbon, Bentonite, Kaolin, Animal charcoal and Wood charcoal. To assess the adsorptive effectiveness of these natural adsorbents and their comparative adsorption capacities, initial dye concentration and contact time, the effect of adsorbent dosage and solution pH were studied. Activated carbon and Bentonite were top ranking and exhibit outstanding adsorption capacities followed by Kaolin and Animal charcoal with similar behavior but less effective. Finally, Wood charcoal showed the poorest adsorption capacity. Generally, Langmuir adsorption isotherm model has the best fit compared to Freundlich model. The study of adsorption kinetics was well described by the pseudo-second order model.
التنزيلات
المراجع
. Crini G. Non-conventional low-cost adsorbents for dye removal: a review. Bioresour Technol 2006; 97 (9): 1061-85.
. Forcas E, Cserhati T, Oros G. Removal of synthetic dyes from wastewaters: a review. Environ Int 2004; 30 (7): 953-71.
. Muthukumar M, Selvakumar N. Studies on the effect of inorganic salts on decolouration of acid dye effluents by ozonation. Dye Pigment 2004; 62 (3): 221-8.
. Ong S, Lee C, Zainal Z. Removal of basic and reactive dyes using ethylenediamine modified rice hull. Bioresour Technol 2007; 98 (15): 2792-9.
. Clarke E, Anliker R. Organic dyes and pigments. Handb Environ Chem 1980; 3: 181-215 [part A].
. Banat IM, et al. Microbial decolorization of textile-dye containing effluents: a review. Bioresour Technol 1996; 58 (3): 217-27.
. Mital AK, Gupta S. Biosorption of cationic dye by dead macro fungus fomitopsis carnea: batch studies. Water Sci Technol 1996; 34 (10): 81-7.
. Fu Y, Viraraghavan T. Fungal decolorization of dye wastewaters: a review. Bioresour Technol 2001; 79 (3): 251-62.
. Chu H, Chen K. Reuse of activated sludge biomass: Removal of basic dyes from wastewaters by biomass. Process Biochem 2002; 37 (6): 595-600.
. Fu Y, Viraraghavan T. Removal of congo red from aqueous solution by fungus aspergillus niger. Adv Environ Res 2002; 7(1): 239-47.
. Gupta G, Prasad G, Singh V. Removal of chrome dye from aqueous solutions by mixed adsorbents: fly ash and coal. Water Res 1990; 24 (1): 45-50.
. Lazar T, Color chemistry: synthesis, properties, and applications of organic dyes and pigments. Color Res Appl 2005; 30 (4): 313-4.
. Kadirvelu K, et al. Utilization of various agriculture wastes for activated carbon preparation and application for the removal of dyes and metal ions from aqueous solutions. Bioresour Technol 2003; 87 (1): 129-32.
. Dabrowski A. Adsorption from theory to practice. Adv Colloid Interface Sci 2001; 93 (1-3):135.
. Allen S, Koumanova B. Decolourisation of water/wastewater using adsorption. J Univ Chem Technol Metall 2005; 40 (3): 175-92.
. Kannan N, Veemaraj T. Removal of lead (II) ions by adsorption onto bamboo dust and commercial activated carbons-A comparative study. E-Journal Chem 2009; 6 (2): 247-256.
. Babel S, Kurniawan TA. Low-cost adsorbents for heavy metals uptake from contaminated water: a review. J Hazard Mater 2003; 97 (1): 219-43.
. Bulu Y, Aydin H. A kinetic and thermodynamics study of methylene blue adsorption on wheat shells. Desalination 2006; 194 (1): 259-67.
. Srinivasan A, Viraraghavan T. Decolorization of dye wastewaters by biosorbents: a review. J Environ Manage 2010; 91 (10): 1915-29.
. Langmuir I. the adsorption of gases on plane surfaces of glass, mica and platinum. J Am Chem Soc 1918; 40 (9): 1361-403.
. Emrah Bulut, Mahmut Ozacar and Ayhan Sengil. (2008): Equilibrium and kinetic data and process design for adsorption of congo red onto bentonite. J Hazard Mat, 154, 613-622
. Frendlich H. Over the adsorption in solution. J Phys Chem 1906; 57: 385-470
. Chilton Nga, Jack N Losso, Wayne E Marshall and Ramu M Rao. (2002): Freundlich adsorption isotherms of agricultural by-products-based powdered activated carbons in a geosmin-water system. Bioresource Technology, 85(2), 131-135.
. Nandi B, Goswami A, Purkait M. Removal of cationic dyes from aqueous solutions by kaolin: kinetic and equilibrium studies. Appl Clay Sci 2009; 42(3-4): 583-90.
. Ho Y-S, McKay G. Pseudo-second order model for sorption processes. Process Biochem 1999; 34 (5): 451-65.
