Evaluating the performance and kinetics of amine-modified NaY zeolites from rice husk for direct air CO2 capture
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 m2/g, was modified with various amines to enhance direct air CO2 capture performance. 30 ...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-06-01
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| Series: | Case Studies in Chemical and Environmental Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666016425001422 |
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| Summary: | 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 m2/g, was modified with various amines to enhance direct air CO2 capture performance. 30 wt% MEA/NaY sorbent exhibited the highest CO2 uptake, achieving approximately 14.5 mgCO2/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. |
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| ISSN: | 2666-0164 |