Sustainable adsorption method for the remediation of malachite green dye using nutraceutical industrial fenugreek seed spent

Syed Noeman Taqui, Mohan C. S., Bibi Ahmadi Khatoon, Manzoore Elahi M. Soudagar, T. M. Yunus Khan, M. A. Mujtaba, Waqar Ahmed, Ashraf Elfasakhany, Ravinder Kumar , Catalin I. Pruncu

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Abstract

Nutraceutical industrial fenugreek seed spent (NIFGS), a relatively low-cost material abundantly available with nearly negligible toxicity for the bioremediation of malachite green (MG) dye from aqueous media, is reported. Studies on the various parameters affecting the adsorption capacity of NIFGS were carried out to evaluate the kinetics and the equilibrium thermodynamics. All the experiments were designed at about pH 7. The adsorption isotherm model proposed by Langmuir fits better than the Freundlich isotherm model. Kinetic study data confirms the viability of pseudo-second-order model. Calculated thermodynamic factors suggest that the adsorption phenomenon is endothermic, almost instantaneous, and physical in nature.

Original languageEnglish
Number of pages12
JournalBiomass Conversion and Biorefinery
Early online date25 Aug 2021
DOIs
Publication statusE-pub ahead of print - 25 Aug 2021

Keywords

  • nutraceutical industrial fenugreek seed spent
  • malachite green
  • adsorption studies

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