Biosorption of Hexavalent Chromium (Cr(VI)) from contaminated water using charred tea waste

Authors

  • Puspa Lal Homagai Department of Chemistry, Amrit Campus, Tribhuvan University, Kathmandu
  • Miksha Bardewa Department of Chemistry, Amrit Campus, Tribhuvan University, Kathmandu
  • Anup Subedee Department of Chemistry, Amrit Campus, Tribhuvan University, Kathmandu
  • Hari Bhakta Oli Department of Chemistry, Amrit Campus, Tribhuvan University, Kathmandu
  • Ram Lal Shrestha Department of Chemistry, Amrit Campus, Tribhuvan University, Kathmandu
  • Deval Prasad Bhattarai Department of Chemistry, Amrit Campus, Tribhuvan University, Kathmandu

DOI:

https://doi.org/10.3126/bibechana.v20i1.53458

Keywords:

Hexavalent Chromium, Pseudo-second order, Charred tea waste, Langmuir isotherm

Abstract

The goal of this study is to develop charred tea waste (CTW) via chemical process for the removal of Cr(VI) from contaminated water. Batch adsorption experiments were conducted as a function of pH, initial concentration, contact time and adsorbent dosage. Characterization of the adsorbent was analyzed by FT-IR and XRD. Maximum adsorption capacity (qm) of the CTW was found to be 85.32 mg/g at optimum pH 2 in 120 minutes. The adsorption on CTW was well fitted to the Langmuir isotherm and the kinetic data is consistent with the pseudo-second order kinetic model. The findings suggest that CTW could be an efficient and promising adsorbent for the removing Cr(VI) from aqueous solution.

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Published

2023-04-05

How to Cite

Homagai, P. L., Bardewa, M., Subedee, A., Oli, H. B., Shrestha, R. L., & Bhattarai, D. P. (2023). Biosorption of Hexavalent Chromium (Cr(VI)) from contaminated water using charred tea waste . BIBECHANA, 20(1), 76–85. https://doi.org/10.3126/bibechana.v20i1.53458

Issue

Vol. 20 No. 1 (2023)

Section

Research Articles

License

Copyright (c) 2023 Puspa Lal Homagai, Miksha Bardewa, Anup Subedee, Hari Bhakta Oli, Ram Lal Shrestha, Deval Prasad Bhattarai

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

This license enables reusers to distribute, remix, adapt, and build upon the material in any medium or format for noncommercial purposes only, and only so long as attribution is given to the creator.

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