Analysis of carbon dioxide gas/liquid mass transfer in aerated stirred vessels using non–Newtonian media

2004 ◽  
Vol 79 (10) ◽  
pp. 1105-1112 ◽  
Author(s):  
Diego Gómez-Díaz ◽  
José M Navaza
Keyword(s):  
Carbon Dioxide ◽  
Mass Transfer ◽  
Stirred Vessels ◽  
Liquid Mass ◽  
Carbon Dioxide Gas ◽  
Liquid Mass Transfer

Gas/liquid mass transfer in stirred vessels

1992 ◽  
Vol 47 (9-11) ◽  
pp. 2357-2362 ◽  
Author(s):  
V. Schlüter ◽  
W.-D. Deckwer
Keyword(s):  
Mass Transfer ◽  
Stirred Vessels ◽  
Liquid Mass ◽  
Liquid Mass Transfer

scholarly journals Biotransformation of Methane and Carbon Dioxide Into High-Value Products by Methanotrophs: Current State of Art and Future Prospects

2021 ◽  
Vol 12 ◽  
Author(s):  
Krishna Kalyani Sahoo ◽  
Gargi Goswami ◽  
Debasish Das
Keyword(s):  
Carbon Dioxide ◽  
Mass Transfer ◽  
Carbon Dioxide Sequestration ◽  
Value Added ◽  
Operating Conditions ◽  
Scale Production ◽  
Liquid Mass ◽  
Liquid Mass Transfer ◽  
Solubility Of Gases ◽  
Low Solubility

Conventional chemical methods to transform methane and carbon dioxide into useful chemicals are plagued by the requirement for extreme operating conditions and expensive catalysts. Exploitation of microorganisms as biocatalysts is an attractive alternative to sequester these C1 compounds and convert them into value-added chemicals through their inherent metabolic pathways. Microbial biocatalysts are advantageous over chemical processes as they require mild-operating conditions and do not release any toxic by-products. Methanotrophs are potential cell-factories for synthesizing a wide range of high-value products via utilizing methane as the sole source of carbon and energy, and hence, serve as excellent candidate for methane sequestration. Besides, methanotrophs are capable of capturing carbon dioxide and enzymatically hydrogenating it into methanol, and hence qualify to be suitable candidates for carbon dioxide sequestration. However, large-scale production of value-added products from methanotrophs still presents an overwhelming challenge, due to gas-liquid mass transfer limitations, low solubility of gases in liquid medium and low titer of products. This requires design and engineering of efficient reactors for scale-up of the process. The present review offers an overview of the metabolic architecture of methanotrophs and the range of product portfolio they can offer. Special emphasis is given on methanol biosynthesis as a potential biofuel molecule, through utilization of methane and alternate pathway of carbon dioxide sequestration. In view of the gas-liquid mass transfer and low solubility of gases, the key rate-limiting step in gas fermentation, emphasis is given toward reactor design consideration essential to achieve better process performance.

Gas/liquid mass transfer in carbon dioxide–alkanes mixtures

2005 ◽  
Vol 114 (1-3) ◽  
pp. 131-137 ◽  
Author(s):  
D. Gómez-Díaz ◽  
J.M. Navaza
Keyword(s):  
Carbon Dioxide ◽  
Mass Transfer ◽  
Liquid Mass ◽  
Liquid Mass Transfer

scholarly journals Enhanced bioconversion of hydrogen and carbon dioxide to methane using a micro-nano sparger system: mass balance and energy consumption

RSC Advances ◽  
2018 ◽  
Vol 8 (47) ◽  
pp. 26488-26496 ◽  
Author(s):  
Ye Liu ◽  
Ying Wang ◽  
Xinlei Wen ◽  
Kazuya Shimizu ◽  
Zhongfang Lei ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Mass Transfer ◽  
Energy Consumption ◽  
Mass Balance ◽  
Biofuel Production ◽  
Commercial Application ◽  
Liquid Mass ◽  
Liquid Mass Transfer

Simultaneous CO2removal with renewable biofuel production can be achieved by methanogens through conversion of CO2and H2into CH4. However, the low gas–liquid mass transfer (kLa) of H2limits the commercial application of this bioconversion.

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