Exhausted Tea Leaves – a low cost bioadsorbent for the removal of Lead (II) and Zinc (II) ions from their aqueous solution

  • Bindra Shrestha Central Department of Chemistry, Tribhuvan University, Kirtipur, Kathmandu
  • P. L. Homagai Central Department of Chemistry, Tribhuvan University, Kirtipur, Kathmandu
  • M. R. Pokhrel Central Department of Chemistry, Tribhuvan University, Kirtipur, Kathmandu
  • K. N. Ghimire Central Department of Chemistry, Tribhuvan University, Kirtipur, Kathmandu
Keywords: Tea Leaves, Bioadsorbent, Heavy metals, Langmuir-isotherm, Amination

Abstract

An efficient and cost effective bioadsorbent has been prepared from exhausted tea leaves using hydrazine monohydrate. The aminated tea leaves (ATL) was characterised by elemental and spectral analysis. The batch adsorption study was performed using ATL for the removal of Pb++ and Zn++ from their aqueous solution. Adsorption experiment was conducted as the function of solution pH, initial metal concentration and contact time. The maximum adsorption capacity of the adsorbent was found to be 120.8 mg/g for Pb++ and 79.76 mg/g for Zn++. These results indicated that the aminated tea leaves hold great potential to remove Pb++ and Zn++ from aqueous solution.

DOI: http://dx.doi.org/10.3126/jncs.v30i0.9383

Journal of Nepal Chemical Society

Vol. 30, 2012

Page: 123-129

Uploaded date: 12/20/2013

 

 

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Abstract
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Published
2013-12-19
How to Cite
Shrestha, B., Homagai, P., Pokhrel, M., & Ghimire, K. (2013). Exhausted Tea Leaves – a low cost bioadsorbent for the removal of Lead (II) and Zinc (II) ions from their aqueous solution. Journal of Nepal Chemical Society, 30, 123-129. https://doi.org/10.3126/jncs.v30i0.9383
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