Kinetic and Isotherm Studies for Removal of Lead Using Bentonite and Bentonite Activated Charcoal Mixture

Pallavi Kumari¹, Ashok Kumar Jha^1, and Usha Sharma²

¹University Department of Chemistry, T.M. Bhagalpur University, Bhagalpur

²Department of Chemistry, G.B. College, Naugachia, T.M. Bhagalpur University, Bhagalpur

Cite this paper:
Pallavi Kumari, Ashok Kumar Jha and Usha Sharma. Kinetic and Isotherm Studies for Removal of Lead Using Bentonite and Bentonite Activated Charcoal Mixture. American Journal of Environmental Protection. 2025; 13(3):66-73. doi: 10.12691/env-13-3-3

Abstract

The present study is aimed at devising a low cost and eco- friendly method of lead removal from aqueous medium. A comparative study of removal of Pb(II) by bentonite and bentonite activated charcoal mixture (I:I) was done. Batch experiments were done to find optimum condition as a function of variables such as pH, agitating time, initial concentration of Pb2+ adsorbent doses. The results showed that experimental results were the best fit for Langmuir isotherm. The kinetic studies confirmed the pseudo-first order reaction. The bentonite was characterised by TGA, DTA, XRD, and FITR. The maximum adsorption maximum adsorption capacity was evaluated to be 99.97percentage .Further uptake capacity by bentonite activated charcoal mixture was almost same as the bentonite. Bentonite activated charcoal mixture has emerged as a potential adsorbent of lead (II) ions from aqueous medium.

Keywords:
Bentonite activated charcoal adsorbent lead removal

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