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Application of a low cost agricultural adsorbent for removal of nickel ions

Ahalya, N and Kanamadi, RD and Ramachandra, TV (2021) Application of a low cost agricultural adsorbent for removal of nickel ions. In: Research Journal of Chemistry and Environment, 25 (6). pp. 136-141.

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In the present study, the adsorption potential of an agricultural waste material Bengal gram husk was evaluated for the removal of Ni2+ions. The optimum conditions for the adsorption of Ni2+ions were conducted by batch experiments. Parameters studied include initial concentration, pH, adsorbent dosage and contact time. The experimental data fitted well to Freundlich and Langmuir isotherms with R2values greater than 0.9. The adsorption kinetics of Ni2+onto Bengal gram husk follow pseudo first order reaction. The maximum adsorption of Ni2+was 112.2 mg/g of the adsorbent, which is much higher than other adsorbents reported in literature. Functional groups like -OH, C= O and - CN groups were found to be involved in the adsorption process as revealed by Fourier transformed infrared spectroscopy. Hence, the present adsorbent can be used at an industrial scale to remove nickel ions from the effluents before discharging into the environment. © 2021 World Research Association. All rights reserved.

Item Type: Journal Article
Publication: Research Journal of Chemistry and Environment
Publisher: World Research Association
Additional Information: The copyright for this article belongs to World Research Association
Department/Centre: Division of Biological Sciences > Centre for Ecological Sciences
Date Deposited: 02 Sep 2021 11:53
Last Modified: 02 Sep 2021 11:53
URI: http://eprints.iisc.ac.in/id/eprint/69614

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