Journal
BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY
Volume 33, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.bcab.2021.101965
Keywords
Textile effluent; Clay; Sapindus seed; Composite absorbent; Models; Green initiative
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An attempt to remove basic yellow dye using a composite adsorbent of clay and activated carbon from sapindus seed was successful, with a removal efficiency of about 86% at alkaline pH of 9. Among the four isotherm models tested, the Freundlich model showed relatively higher R-squared values and better fitting to the experimental data.
Degradation of dye in textile effluent is a major problem faced in all developing countries. In this study, an attempt has been made to remove basic yellow dye using a composite adsorbent which is a combination of clay and activated carbon prepared from sapindus seed. Basic yellow dye has a molecular structure which belongs to heterocycle class. In this study a new approach of binded clay with activated carbon was used as a green initiative. Binded clay along with prepared activated carbon from sapindus seed gave a better basic yellow dye removal efficiency of about 86% at alkaline pH of 9. In this paper four isotherm models, namely: Langmuir, Freundlich, pseudo-first order and pseudo-second order was utilized to correlate the experimental adsorption isotherm data. Among the various isotherm Freundlich model fit the data with a relatively higher R-2 values than other models.
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