Investigation of the Ni(II) adsorption isotherm onto biochar derived from cassava stem

Authors

  • Dinh Van Phuc Nguyen Tat Thanh University
  • Nguyen Thanh Hung Nguyen Tat Thanh University
  • Truong Thi Thanh Van Nguyen Tat Thanh University
  • Le Nguyen Trung Tin Nguyen Tat Thanh University
  • Pham Nguyen Kim Tuyen Saigon University

DOI:

https://doi.org/10.62239/jca.2025.055

Keywords:

Cassava stem, Biochar, Adsorption, Wastewater

Abstract

In this study, biochar was synthesized from Cassava stem via a pyrolysis at 700 oC within 60 minutes. This biochar was used as an adsorbent to remove Ni(II) from an aqueous solution. Effects of pH, adsorption time, and initial concentration of Ni were investigated. Results showed that the adsorption of Ni(II) onto biochar derived from Cassava stem obtained the maximum at pH = 8 and adsorption time = 1080 min with maximum adsorption capacity calculated from Langmuir of 31.77 mg/g. Isotherm and kinetic studies indicated that the Sips model gave the best fit with experimental data. This study shows the potential application of Cassava stem biochar on the treatment of polluted Ni(II) wastewater.

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Published

21-11-2025

Issue

Vol. 14 No. 4 (2025): December

Section

VNACA2025

License

Copyright (c) 2025 Dinh Van Phuc, Nguyen Thanh Hung, Truong Thi Thanh Van, Le Nguyen Trung Tin, Pham Nguyen Kim Tuyen

Creative Commons License

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

How to Cite

Investigation of the Ni(II) adsorption isotherm onto biochar derived from cassava stem. (2025). Vietnam Journal of Catalysis and Adsorption, 14(4), 7-12. https://doi.org/10.62239/jca.2025.055
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