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Cellulose nanocrystals coated with a tannic acid-Fe3+ complex as a significant medium for efficient CH4 microbial biotransformation

Title
Cellulose nanocrystals coated with a tannic acid-Fe3+ complex as a significant medium for efficient CH4 microbial biotransformation
Authors
Na, Jeong-GeolKim, Min SikJe, Hwa HeonKang, EungsuMoon, EunjooHWANG, DONG SOOChoi, Yoo Sung
Date Issued
Apr-2021
Publisher
Elsevier Ltd.
Abstract
Microbial biotransformation of CH4 gas has been attractive for the production of energy and high-value chemicals. However, insufficient supply of CH4 in a culture medium needs to be overcome for the efficient utilization of CH4. Here, we utilized cellulose nanocrystals coated with a tannic acid-Fe3+ complex (TA-Fe3+CNCs) as a medium component to enhance the gas-liquid mass-transfer performance. TA-Fe3+CNCs were well suspended in water without agglomeration, stabilized gas bubbles without coalescence, and increased the gas solubility by 20 % and the kLa value at a rapid inlet gas flow rate. Remarkably, the cell growth rate of Methylomonas sp. DH-1 as model CH4-utilizing bacteria improved with TA-Fe3+CNC concentration without any cytotoxic or antibacterial properties, resulting in higher metabolite production ability such as methanol, pyruvate, formate, and succinate. These results showed that TA-Fe3+CNCs could be utilized as a significant component in the culture medium applicable as a promising nanofluid for efficient CH4 microbial biotransformation.
URI
http://oasis.postech.ac.kr/handle/2014.oak/105085
ISSN
18791344
Article Type
Article
Citation
Carbohydrate Polymers, vol. 258, page. 117733, 2021-04
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황동수HWANG, DONG SOO
Div of Environmental Science & Enginrg
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