Off-grade epoxy resin and waste tire composites for CO2 adsorption

Name: Teerapat Inudom

Organization : Chulalongkorn University. Faculty of Science

Name: Sirilux Poompradub

Organization : Chulalongkorn University. Faculty of Science

keyword: Off-grade epoxy resin

LCSH: Carbon dioxide -- Absorption and adsorption

; Waste tire

; Kinetic adsorption

Abstract: Global warming is a major environmental concern, driven by the continuous rise of carbon dioxide (CO₂) in the atmosphere. Among the available technologies, adsorption using solid adsorbents stands out for its lower energy requirements and lower corrosion risk. Recently, the epoxy resin (EP) has been successfully prepared into activated carbon by carbonization process. However, this method requires high energy consumption and long preparation time. Waste tire (WT) is another interesting polymer waste material for CO₂ adsorption. It contains carbon black, silica and zinc oxide as components. The oxygen from silica and zinc oxide enhances CO₂ physisorption through electrostatic interactions between oxygen atoms and carbon atoms of CO₂. Additionally, the oxygen in silica and zinc oxide can act as Lewis bases, bonding with CO₂ to form carboxylate ions. Therefore, this research aims to propose a new method for preparing the polymeric adsorbents using WT mixed with the off-grade EP at various mass ratios of EP:WT (1:1, 1:2, 1:3 and 1:4). It was found that the composite of EP:WT at the mass ratio of 1:3 (EPWT13) exhibited the highest CO₂ adsorption capacity (7.12 mgCO₂/g_adsorbent) under the ambient temperature and atmospheric pressure using 12% v/v CO₂ in nitrogen and the inlet flow rate of 100 mL/min. Furthermore, the kinetic study of EPWT13 fitted well with Avrami’s model indicating both CO₂ physisorption and chemisorption. Moreover, the EPWT13 showed 8.40% decrease in CO₂ adsorption capacity after five adsorption-desorption cycles.

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

Address: BANGKOK

Email: library@kmutnb.ac.th

Created: 2025

Modified: 2025-08-01

Issued: 2025-08-01

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BibliograpyCitation : In Thai Institute of Chemical Engineering and Applied Chemistry and Khon Kaen University. Faculty of Engineering. The 34th Thai Institute of Chemical Engineering and Applied Chemistry International Conference (TIChE 2025) (TIChE 2025 TIChE-SG-06). Bangkok : Thai Institute of Chemical Engineering and Applied Chemistry, 2025

eng

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