Effective Chromium (VI) Removal from Contaminated Water by Chemically Modified Litchi Chinensis Seed Powder: Characterization, Kinetic and Isotherm Studies

Authors

  • Rajan Rai Department of Chemistry, Tri-Chandra Multiple Campus, Tribhuvan University, Kathmandu, Nepal
  • Maya Pokharel Department of Chemistry, Tri-Chandra Multiple Campus, Tribhuvan University, Kathmandu, Nepal
  • Devendra Khadka Department of Chemistry, Tribhuvan Multiple Campus, Tribhuvan University, Tansen, Palpa, Nepal
  • Janaki Baral Department of Chemistry, Tri-Chandra Multiple Campus, Tribhuvan University, Kathmandu, Nepal
  • Dasu Ram Paudel Department of Chemistry, Tri-Chandra Multiple Campus, Tribhuvan University, Kathmandu, Nepal
  • Surendra Kumar Gautam Department of Chemistry, Tri-Chandra Multiple Campus, Tribhuvan University, Kathmandu, Nepal
  • Megh Raj Pokhrel Central Department of Chemistry, Tribhuvan University, Kirtipur, Kathmandu, Nepal
  • Bhoj Raj Poudel Department of Chemistry, Tri-Chandra Multiple Campus, Tribhuvan University, Kathmandu, Nepal https://orcid.org/0000-0001-7134-5506

DOI:

https://doi.org/10.3126/ije.v12i2.65442

Keywords:

Adsorption, Biosorbent, Hexavalent chromium, Litchi seed, Wastewater treatment

Abstract

In this work, Litchi chinensis seed powder has been chemically modified to charred Litchi chinensis seed powder (CLCS) for removal of Cr(VI) from the simulated wastewater. The adsorption capacity of CLCS for Cr(VI) was determined in batch experiment method. The materials were characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD), and fourier transform infrared (FTIR) spectroscopy. Biosorption behaviour was investigated using isotherm and kinetic models. CLCS demonstrated a noteworthy adsorption capacity for Cr(VI), with a maximum adsorption capacity of 69.93 mg/g at pH 2.0. The Cr(VI) adsorption onto CLCS was found to follow pseudo-second-order kinetics and the experimental data best fitted with Langmuir isotherm model. According to the results, Cr(VI) can be removed from acidic wastewater using CLCS as an adsorbent. The results indicate that further studies and modification are necessary to improve the efficiency of the CLCS, and its feasibility at normal pH conditions.

Downloads

Download data is not yet available.
Abstract
185
PDF
182

Downloads

Published

2023-12-31

How to Cite

Rai, R., Pokharel, M., Khadka, D., Baral, J., Paudel, D. R., Gautam, S. K., Pokhrel, M. R., & Poudel, B. R. (2023). Effective Chromium (VI) Removal from Contaminated Water by Chemically Modified Litchi Chinensis Seed Powder: Characterization, Kinetic and Isotherm Studies. International Journal of Environment, 12(2), 83–102. https://doi.org/10.3126/ije.v12i2.65442

Issue

Vol. 12 No. 2 (2023)

Section

Research Article

License

Copyright (c) 2023 International Journal of Environment

Creative Commons License

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

The author(s) acknowledge that the manuscript submitted is his/her/their own original work; all authors participated in the work in a substantive way and are prepared to take public responsibility for the work; all authors have seen and approved the manuscript as submitted;  the manuscript has not been published and is not being submitted or considered for publication elsewhere; the text, illustrations, and any other materials included in the manuscript do not infringe(plagiarism) upon any existing copyright or other rights of anyone.

Notwithstanding the above, the Contributor(s) or, if applicable the Contributor’s Employer, retain(s) all proprietary rights other than copyright, such as Patent rights; to use, free of charge, all parts of this article for the author’s future works in books, lectures, classroom teaching or oral presentations; the right to reproduce the article for their own purposes provided the copies are not offered for sale.

The copyright to the contribution identified is transferred to IJE.