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Vol. 34 No. 8 (2022): Vol 34 Issue 8, 2022

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Isotherm and Thermodynamic Studies of Biosorption of Brilliant Green on Surface of Low Cost Biomass Obtained from Michelia champaca Leaf

https://doi.org/10.14233/ajchem.2022.23864
S. Baruah
Department of Chemistry, Faculty of Sciences, Assam Down Town University, Panikhaiti, Guwahati-781026, India

Corresponding Author(s) : S. Baruah

smitabaruah44@gmail.com

Asian Journal of Chemistry, Vol. 34 No. 8 (2022): Vol 34 Issue 8, 2022

Abstract

The capacity to remove brilliant green from aqueous solutions through biosorption using the Michelia champaca leaf powder (MCLP), was examined in batch experiments. Almost 99.00% of brilliant green has been removed from 10 mg L-1 brilliant green solution and 93.22% from 50 mg L-1 brilliant green solution for 0.8 g L-1 biosorbent. The biosorption capacity of Michelia champaca leaf powder (MCLP) was independent on the pH of the brilliant green solution. For that reason all the adsorption experiments were done without adjusting the pH value. Langmuir monolayer sorption capacity, qm decreases from 200 to 55.56 mg g-1 (109.63 mg g-1, mean) with increase in MCLP amount from 0.2-1.0 g L-1. The adsorption capacity increases with speed of agitation and most favourable adsorption was achieved at 100 revolution per min (rpm). The extend of adsorption of brilliant green onto MCLP was observed to increase with increase in temperature indicating interaction between MCLP-brilliant green is endothermic in nature. The biosorption of brilliant green on MCLP was studied using Fourier transform infrared spectroscopy (FTIR), which indicates that the presence of brilliant green ions in the biomass, affects the bands correlated with −OH, −CHO, −CO and −CN groups. Complete characterization of parameters indicate MCLP to be an excellent biosorbent for treating wastewaters containing brilliant green.

Keywords

Biosorption Brilliant green Langmuir Freundlich Temkin Endothermic Michelia champaca leaf powder
Baruah, S. (2022). Isotherm and Thermodynamic Studies of Biosorption of Brilliant Green on Surface of Low Cost Biomass Obtained from Michelia champaca Leaf. Asian Journal of Chemistry, 34(8), 2113–2118. https://doi.org/10.14233/ajchem.2022.23864
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