Research Article

Sustainable Detoxification of Galvanizing Wastewater Using Potassium Permanganate and Rice Husk-Derived Activated Carbon

Volume: 6 Number: 2 March 12, 2026

Sustainable Detoxification of Galvanizing Wastewater Using Potassium Permanganate and Rice Husk-Derived Activated Carbon

Abstract

This study investigated the potential of KMnO4-activated Rice Husk (RH) Carbon for detoxifying industrial wastewater contaminated with heavy metals, particularly those originating from galvanization processes. This research aimed to develop a novel adsorbent, KMnO4-activated RH Carbon, and evaluate its effectiveness in detoxifying wastewater contaminated with heavy metals. The adsorbent was prepared by carbonising pre-treated rice husks at 700 °C and subsequently activating with KMnO₄. Batch adsorption experiments were conducted to evaluate the effects of pH, contact time, adsorbent dosage, and agitation speed on the removal of Cu²⁺, Fe²⁺, and Zn²⁺ ions. The impact of pH on absorption efficiency showed that optimum treatment occurred at pH 7 with 75%, 80%, and 54% remediation for Cu3+, Fe2+, and Zn2+, respectively. For contact time, optimum treatment occurred after 80 minutes of rotation, with the metals having 25%, 67%, and 50% remediation, respectively. Optimum treatment was achieved at a 6g dosage of the activated carbon, with the metals having 75%, 98%, and 91% remediation, respectively. The effect of rotating speed showed that optimum treatment occurred at 100rpm. At 100rpm, the metals had 62%, 85%, and 68% remediation, respectively. Optimal removal efficiencies were observed at a pH of 7, a 80-minute contact time, a 6-g adsorbent dosage per 100 mL of wastewater, and an agitation speed of 150 rpm. Under these conditions, maximum removal efficiencies reached 75% for Cu²⁺, 98% for Fe²⁺, and 91% for Zn²⁺.

Keywords

References

  1. 1. Amato, A., Beolchini, F., Cantarini, F., Innocenzi, V., Ippolito, N. M., Morico, B., Prisciandaro, M., & Vegliò, F. (2020) Case study on technical feasibility of galvanic wastewater treatment plant based on life cycle assessment and costing approach. Journal of Environmental Chemical Engineering, 8(6), 104535. https://doi.org/10.1016/j.jece.2020.104535
  2. 2. Cao, Y., Chen, S., Fang, J., Lei, K., Liu, G., Liu, Q., Xu, X., & Yao, M.(2024). Hot-dip galvanizing process and the influence of metallic elements on composite coatings. Journal of Composites Science, 8(5), 160. https://doi.org/10.3390/jcs8050160
  3. 3. Kumar, M., Pandey, A., Rathour, R., Sun, Y., Thakur, I. S., & Tsang, D. C. (2020). Algae as potential feedstock for the production of biofuels and value-added products: Opportunities and challenges. Science of the Total Environment, 716, 137116. https://doi.org/10.1016/j.scitotenv.2020.137116
  4. 4. Joshi, S., Kormoker, T., Kumar, R., Kumar, S., Kundu, D., Lamba, J., Rose, P. K., Sahoo, P. K., & Sharma, P., (2024). Phycoremediation of potentially toxic elements for agricultural and industrial wastewater treatment: Recent advances, challenges, and future prospects. Desalination and Water Treatment, 319, 100505. https://doi.org/10.1016/j.dwt.2024.100505
  5. 5. Adepitan, O. L., Alabi, O. O., Deigh, C., & Gbadeyan O. J (2026) “Systems-Level Optimization of Hybrid Produced Water Treatment Systems for Sustainable Oil and Gas Production: A Review of Current Technologies” Global Challenges willey https://doi.org/10.1002/gch2.202500575
  6. 6. Adeyi, T. A., Alabi, O. O., Gbadeyan, O. J., Ogoh, G. O., & Olagunju, O. A. (2025). Investigation and Exploring the Microstructural and Thermal Properties of Pseudostem Juice of Banana and Cassava Juice as a Quenching Media. Waste and Biomass Valorization, 16(3), 1201-1213. https://doi.org/10.1007/s12649-024-02703-0.
  7. 7. Imtiaz, M., Khan, S. N., & Nafees, M. (2023). Assessment of industrial effluents for heavy metals concentration and evaluation of grass (Phalaris minor) as a pollution indicator. Heliyon, 9(9).. e20299, https://doi.org/10.1016/j.heliyon.2023.e20299
  8. 8. Ajagbe, W. O., Akolade, A. S., Alabi, O. O., Odunewu, I. D., Ogunlade, O. D., & Olaomotito, P. A. (2024) “Application of gum Arabic on the geotechnical properties of subgrade materials” Acta Technica Jaurinensis 2024. https://doi.org/10.14513/actatechjaur.00748

Details

Primary Language

English

Subjects

Water Resources Engineering, Wastewater Treatment Processes, Environmental and Sustainable Processes, Water Treatment Processes

Journal Section

Research Article

Publication Date

March 12, 2026

Submission Date

September 2, 2025

Acceptance Date

January 7, 2026

Published in Issue

Year 2026 Volume: 6 Number: 2

APA
Adebola, A., Omotayo, A., Adesope, O., Adebiyi, A., Abolarin, O., & Waheed, J. A. (2026). Sustainable Detoxification of Galvanizing Wastewater Using Potassium Permanganate and Rice Husk-Derived Activated Carbon. Engineering Perspective, 6(2), 210-221. https://doi.org/10.64808/engineeringperspective.1776898
AMA
1.Adebola A, Omotayo A, Adesope O, Adebiyi A, Abolarin O, Waheed JA. Sustainable Detoxification of Galvanizing Wastewater Using Potassium Permanganate and Rice Husk-Derived Activated Carbon. engineeringperspective. 2026;6(2):210-221. doi:10.64808/engineeringperspective.1776898
Chicago
Adebola, Akolade, Alabi Omotayo, Olaomotito Adesope, Abibat Adebiyi, Oluwatunmise Abolarin, and Jubrıl Ayınde Waheed. 2026. “Sustainable Detoxification of Galvanizing Wastewater Using Potassium Permanganate and Rice Husk-Derived Activated Carbon”. Engineering Perspective 6 (2): 210-21. https://doi.org/10.64808/engineeringperspective.1776898.
EndNote
Adebola A, Omotayo A, Adesope O, Adebiyi A, Abolarin O, Waheed JA (March 1, 2026) Sustainable Detoxification of Galvanizing Wastewater Using Potassium Permanganate and Rice Husk-Derived Activated Carbon. Engineering Perspective 6 2 210–221.
IEEE
[1]A. Adebola, A. Omotayo, O. Adesope, A. Adebiyi, O. Abolarin, and J. A. Waheed, “Sustainable Detoxification of Galvanizing Wastewater Using Potassium Permanganate and Rice Husk-Derived Activated Carbon”, engineeringperspective, vol. 6, no. 2, pp. 210–221, Mar. 2026, doi: 10.64808/engineeringperspective.1776898.
ISNAD
Adebola, Akolade - Omotayo, Alabi - Adesope, Olaomotito - Adebiyi, Abibat - Abolarin, Oluwatunmise - Waheed, Jubrıl Ayınde. “Sustainable Detoxification of Galvanizing Wastewater Using Potassium Permanganate and Rice Husk-Derived Activated Carbon”. Engineering Perspective 6/2 (March 1, 2026): 210-221. https://doi.org/10.64808/engineeringperspective.1776898.
JAMA
1.Adebola A, Omotayo A, Adesope O, Adebiyi A, Abolarin O, Waheed JA. Sustainable Detoxification of Galvanizing Wastewater Using Potassium Permanganate and Rice Husk-Derived Activated Carbon. engineeringperspective. 2026;6:210–221.
MLA
Adebola, Akolade, et al. “Sustainable Detoxification of Galvanizing Wastewater Using Potassium Permanganate and Rice Husk-Derived Activated Carbon”. Engineering Perspective, vol. 6, no. 2, Mar. 2026, pp. 210-21, doi:10.64808/engineeringperspective.1776898.
Vancouver
1.Akolade Adebola, Alabi Omotayo, Olaomotito Adesope, Abibat Adebiyi, Oluwatunmise Abolarin, Jubrıl Ayınde Waheed. Sustainable Detoxification of Galvanizing Wastewater Using Potassium Permanganate and Rice Husk-Derived Activated Carbon. engineeringperspective. 2026 Mar. 1;6(2):210-21. doi:10.64808/engineeringperspective.1776898

download?token=eyJhdXRoX3JvbGVzIjpbXSwiZW5kcG9pbnQiOiJqb3VybmFsIiwib3JpZ2luYWxuYW1lIjoiQ2l0ZVNjb3JlMjAyNV9FbmdpbmVlcmluZ19QZXJzcGVjdC5wbmciLCJwYXRoIjoiMjk0YS81N2EyLzlmYzcvNmEyMDA1NTk1OTk0NjMuMTIyOTg1NTEucG5nIiwiZXhwIjoxNzgwNDg3MDE3LCJub25jZSI6ImFjOTI3ZGIxMTUyNGUwZWRhYTlmMzc4ZDk4ZWIwOWQ0In0.VU0eXdFjkzGH_RYBvG3PsXcGoypETO7r1qIe7dMExbU