Journal
ENVIRONMENTAL SCIENCE & TECHNOLOGY
Volume 45, Issue 20, Pages 9101-9108Publisher
AMER CHEMICAL SOC
DOI: 10.1021/es202223p
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Funding
- Swiss foundation GEBERT-RUF-STIFTUNG
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A novel amine-based adsorbent for CO2 capture from air was developed, which uses biogenic raw materials and an environmentally benign synthesis route without organic solvents. The adsorbent was synthesized through freeze-drying an aqueous suspension of nanofibrillated cellulose (NFC) and N-(2-aminoethyl)-3-aminopropylmethyldimethoxysilane (AEAPDMS). At a CO2 concentration of 506 ppm in air and a relative humidity of 40% at 25 degrees C, 1.39 mmol CO2/g was absorbed after 12 h. Stability was examined for over 20 consecutive 2-h-adsorption/1-h-desorption cycles, yielding a cyclic capacity of 0.695 rrunol CO2/g.
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