Potassium permanganate-modified cellulose from pineapple bran for heavy metal adsorption

Name: Kittiya Wongkhan

Organization : Ubon Ratchathani University. Faculty of Science

Name: Wimonsiri Wiakthaisong

Organization : Ubon Ratchathani University. Faculty of Science

Name: Pongsakorn Rieagnam

Organization : Ubon Ratchathani University. Faculty of Science

Name: Rukkiat Jitchati

Organization : Ubon Ratchathani University. Faculty of Science

Email : rukkiat.j@ubu.ac.th

LCSH: Pineapple -- By-products

LCSH: Cellulose

LCSH: Sewage -- Purification -- Heavy metals removal

Abstract: Pineapple bran, a byproduct of fruit processing, was studied for cellulose extraction and modification to create an effective adsorbent for Cu²⁺ ions. The adsorption behavior of Cu²⁺ was analyzed through isothermal adsorption, adsorption kinetics, and thermodynamics. Cellulose was extracted from pineapple bran using alkaline treatment to remove hemicellulose and lignin, with optimized conditions identified. The optimal alkaline treatment used 5% w/v NaOH solution with a pineapple bran to NaOH solution ratio of 5 g to 100 mL at 60 °C for 3 hours. Modified pineapple bran cellulose, treated with potassium permanganate, demonstrated a 99% higher Cu²⁺ adsorption capacity compared to unmodified cellulose. Adsorption kinetics indicated that Cu²⁺ adsorption on modified cellulose followed the Freundlich isotherm model and the pseudo-second-order kinetic model, suggesting a predominant chemisorption mechanism. Thermodynamic analysis further confirmed that the adsorption process was spontaneous and exothermic

King Mongkut's University of Technology North Bangkok. Central Library

Address: BANGKOK

Email: library@kmutnb.ac.th

Created: 2025

Modified: 2025-10-24

Issued: 2025-10-24

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BibliograpyCitation : In The Chemical Society of Thailand under the Patronage of Professor Dr. Her Royal Highness Princess Chulabhorn Krom Phra Srisavangavadhana and Suranaree University of Technology. Institute of Science. School of Chemistry. Pure and Applied Chemistry International Conference 2025 (PACCON 2025) (pp.430-435). Bangkok : The Chemical Society of Thailand under the Patronage of Professor Dr. Her Royal Highness Princess Chulabhorn Krom Phra Srisavangavadhana in association with the School of Chemistry, Institute of Science, Suranaree University of Technology, 2025

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