Journal
BIORESOURCE TECHNOLOGY
Volume 287, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2019.121406
Keywords
Adsorbent; Biofixation; Carbon dioxide; Chlorella fusca LEB 111; Nanofibers
Funding
- CAPES (Coordination for the Improvement of Higher Education Personnel)
- MCTIC (Ministry of Science, Technology, Innovations and Communications)
- Eletrobras-CGTEE (Brazilian Electric Power Stations S. A.-Thermal Power Generation Company)
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The objective of this study was to evaluate the biofixation and production of biocompounds by Chlorella fusca LEB 111 cultivated with different concentrations of carbon dioxide (CO2) adsorbent nanofibers in their free form or retained. Cultures were grown in 15% (vv(-1)) CO2 with 0.1, 0.3 and 0.5 g L-1 nanofibers developed with 10% (w v(-1)) polyacrylonitrile (PAN)/dimethylformamide (DMF), with or without nanoparticles; retained or not. The addition of 0.1 g L-1 nanofibers with nanoparticles in their free form to the cultures promoted the accumulation of approximately 3 times more carbon in the medium (46.6 mg L-1), a 45% higher biofixation rate (89.2 mg L-1 d(-1))and increased carbohydrate production by approximately 2.3% (w w(-1)) of that observed in cultures grown without nanofibers. Therefore, nanofibers showed promising potential as physical adsorbents of CO2 in the cultivation to increase gas fixation and promote the synthesis of macromolecules.
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