Work

Evaluating the performance and kinetics of amine-modified NaY zeolites from rice husk for direct air CO2 capture

Year: 2025

Type: article

Abstract: High-purity silica derived from rice husk, a low-cost and abundant agricultural byproduct, was utilized to synthesize NaY zeolite via hydrothermal. The resulting NaY zeolite, with a specific surface area of 666 m 2 /g, was modified with various amines to enhance direct air CO 2 capture performance. 30wt% MEA/NaY sorbent exhibited the highest CO 2 uptake, achieving approximately 14.5 mgCO 2 /g at 30 °C. Sorbent retained about 96 percent of its initial capacity after ten cycles. Kinetic analysis using Avrami’s model indicated a low activation energy of 9.01 kJ/mol. Also, cost analysis showed that 13 USD/kg is needed to produce NaY zeolite from rice husk.

Source: Case Studies in Chemical and Environmental Engineering

DOI: 10.1016/j.cscee.2025.101235

Authors: Pacharapol Nokpho, Kanchana Phianchana, Xiaolin Wang, Sutthichai Boonprasop, Pornpote Piumsomboon, Benjapon Chalermsinsuwan

Institutions: Chulalongkorn University, Australian National University, Mahidol University

Language: English

Topic: Carbon Dioxide Capture Technologies

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Responsible consumption and production, Climate action, Affordable and clean energy

Open Access status: gold

Estimated APC paid: $760