ADSORPTIVE REMOVAL OF HEXAVALENT CHROMIUM FROM AQUEOUS PHASE USING VEGETABLE-TANNED BUFFING DUST

Removal of hexavalent chromium from synthetic wastewater was performed by employing vegetable-tanned buffing dust, a byproduct of tanneries. Different analysis techniques such as SEM, BET, and FTIR were used to characterize the vegetable-tanned buffing dust. The experiment on adsorption was carried...

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Bibliographic Details
Published in:Rasāyan journal of chemistry 2024, Vol.17 (2), p.717-728
Main Authors: Kumar, Manikant, N. S. Maurya, Singh, Anshuman, M.K. Rai
Format: Article
Language:English
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Summary:Removal of hexavalent chromium from synthetic wastewater was performed by employing vegetable-tanned buffing dust, a byproduct of tanneries. Different analysis techniques such as SEM, BET, and FTIR were used to characterize the vegetable-tanned buffing dust. The experiment on adsorption was carried out in a batch manner. Investigations were conducted into the various operating parameters, such as the dose of adsorbent, contact period, and initial Cr (VI) concentration. At a dose of 1g/100 mL and a contact period of 280 minutes, the maximum adsorption capacity was noted. The Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich adsorption isotherms were examined at various concentrations. With a maximum adsorption efficiency of 14.14 mg/g, the Langmuir isotherm model was found to be the most well-fitting for the current investigation. Kinetic analysis was performed for pseudo first and second order; the pseudo-second-order model demonstrated the most optimal fit with a regression coefficient (R2 ) of 0.9936.
ISSN:0974-1496
0974-1496
DOI:10.31788/RJC.2024.1728813