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Year 2012, Volume: 25 Issue: 1, 59 - 87, 24.01.2012

İmran Ali , Sarita Dahıya Tabrez Khan

Abstract

Removal of Direct Red 81 Dye from Aqueous Solution by Native and Citric Acid Modified Bamboo Sawdust - Kinetic Study and Equilibrium Isotherm Analyses

Year 2012, Volume: 25 Issue: 1, 59 - 87, 24.01.2012

İmran Ali , Sarita Dahıya Tabrez Khan

Abstract

Adsorption of Direct Red 81 (DR81) dye was investigated using Bamboo Sawdust (BSD) and Treated Bamboo Sawdust (TBSD) in a batch system with respect to initial dye concentration, adsorbent dose, pH, temperature and contact time. Maximum adsorption capacity (qm) obtained from the Langmuir isotherm plots were 6.43 mg/g (89%) (DR81-BSD) and 13.83 mg/g (92%) (DR81-TBSD) at 303 K. Freundlich and Halsey models described the data more appropriately as compared to Langmuir, Dubinin-Kaganer-Radushkevich (DKR), Harkin-Jura and Temkin models. The adsorption dynamics conformed well to pseudo-second order kinetic equation. The adsorption process was controlled by both liquid-film and intra-particle diffusions. Thermodynamic parameters (ΔGo, ΔHo and ΔSo) suggested the adsorption process to be spontaneous, endothermic with increase in randomness at solid-solution interface.

Keywords

Treated Bamboo Sawdust adsorption isotherm kinetic intra-particle diffusion

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Details

Primary Language English
Subjects Engineering
Journal Section Chemistry
Authors

İmran Ali

Sarita Dahıya This is me

Tabrez Khan This is me

Publication Date January 24, 2012
Published in Issue Year 2012 Volume: 25 Issue: 1

Cite

APA Ali, İ., Dahıya, S., & Khan, T. (2012). Removal of Direct Red 81 Dye from Aqueous Solution by Native and Citric Acid Modified Bamboo Sawdust - Kinetic Study and Equilibrium Isotherm Analyses. Gazi University Journal of Science, 25(1), 59-87.
AMA Ali İ, Dahıya S, Khan T. Removal of Direct Red 81 Dye from Aqueous Solution by Native and Citric Acid Modified Bamboo Sawdust - Kinetic Study and Equilibrium Isotherm Analyses. Gazi University Journal of Science. January 2012;25(1):59-87.
Chicago Ali, İmran, Sarita Dahıya, and Tabrez Khan. “Removal of Direct Red 81 Dye from Aqueous Solution by Native and Citric Acid Modified Bamboo Sawdust - Kinetic Study and Equilibrium Isotherm Analyses”. Gazi University Journal of Science 25, no. 1 (January 2012): 59-87.
EndNote Ali İ, Dahıya S, Khan T (January 1, 2012) Removal of Direct Red 81 Dye from Aqueous Solution by Native and Citric Acid Modified Bamboo Sawdust - Kinetic Study and Equilibrium Isotherm Analyses. Gazi University Journal of Science 25 1 59–87.
IEEE İ. Ali, S. Dahıya, and T. Khan, “Removal of Direct Red 81 Dye from Aqueous Solution by Native and Citric Acid Modified Bamboo Sawdust - Kinetic Study and Equilibrium Isotherm Analyses”, Gazi University Journal of Science, vol. 25, no. 1, pp. 59–87, 2012.
ISNAD Ali, İmran et al. “Removal of Direct Red 81 Dye from Aqueous Solution by Native and Citric Acid Modified Bamboo Sawdust - Kinetic Study and Equilibrium Isotherm Analyses”. Gazi University Journal of Science 25/1 (January 2012), 59-87.
JAMA Ali İ, Dahıya S, Khan T. Removal of Direct Red 81 Dye from Aqueous Solution by Native and Citric Acid Modified Bamboo Sawdust - Kinetic Study and Equilibrium Isotherm Analyses. Gazi University Journal of Science. 2012;25:59–87.
MLA Ali, İmran et al. “Removal of Direct Red 81 Dye from Aqueous Solution by Native and Citric Acid Modified Bamboo Sawdust - Kinetic Study and Equilibrium Isotherm Analyses”. Gazi University Journal of Science, vol. 25, no. 1, 2012, pp. 59-87.
Vancouver Ali İ, Dahıya S, Khan T. Removal of Direct Red 81 Dye from Aqueous Solution by Native and Citric Acid Modified Bamboo Sawdust - Kinetic Study and Equilibrium Isotherm Analyses. Gazi University Journal of Science. 2012;25(1):59-87.