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International Journal of Recent Trends in Science and Technology, ISSN 2277-2812 E-ISSN: 2249-8109

Volume 9, Issue 1, November 2013 pp 36-40

Research Article

Biosorption of Reactive Red 198 from an Aqueous Solution Using Morinda Tinctoria

R. Vijayalakshmi¹, R. Venkatachalam², T. Periyathambi³, P. Saravanan⁴

^{1, 4}Department of Chemistry, Kings College of Engineering, Punalkulam, Thanjavur, Tamil Nadu, INDIA.

Academic Editor : Dr. Aher K.R.

Morinda tinctoria seed used for the removal of reactive red 198 from an Aqueous solution was studied by batch biosorption system process The equilibrium dye uptake capacity of Morinda tinctoria was determined with the influence of various environmental parameters such as sorbent dosage (0.02–0.1 g 100mL^-1), initial pH (1–6), and initial dye concentration (10-50 mg L^-1). Batch experiments were carried out for biosorption kinetics and isotherm studies. The results showed that dye uptake capacity was found to increase with decreases in biosorbent dosage. Equilibrium uptake capacity was found to be more at pH2, when compared with all other pH values studied. The equilibrium data was analyzed with the use of Freundlich and Langmuir adsorption isotherm models. The equilibrium data was found to be fitted very well with the Freundlich isotherm model when compared with the Langmuir isotherm model. Adsorption kinetics data modeled with the application of pseudo-first order and pseudo-second order models revealed that the     pseudo-second order model was the best fitting model. The biosorbent characteristics were observed by SEM and FTIR analysis.