Design and evaluation of gas fermentation systems for CO2 reduction to C2 and C4 fatty acids: Non-genetic metabolic regulation with pressure, pH and reaction time

Katakojwala, Ranaprathap; Tharak, Athmakuri; Sarkar, Omprakash; Mohan, S. Venkata

doi:10.1016/j.biortech.2022.126937

Cited by 15 publications

(14 citation statements)

References 49 publications

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“…Many researchers synthesized acetate, ethanol, acetic acid, butanol, butyric acid, and other essential chemicals during the gas fermentation process (Table ). ,− The products synthesized through the biological gas fermentation process are summarized in the subsequent section.…”

Section: Biological Methods Of Carbon Dioxide (Co2) Sequestrationmentioning

confidence: 99%

Review and Perspectives of Emerging Green Technology for the Sequestration of Carbon Dioxide into Value-Added Products: An Intensifying Development

Kumar

Jujjavarapu

2023

Energy Fuels

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Global warming has emerged as a major problem for humanity in this anthropocentric period. The constantly rising amount of carbon dioxide (CO 2 ) in the atmosphere has caused global warming, which has caused a series of changes in the Earth's climate and weather systems. Rapid anthropogenic activity such as industrialization and urbanization has led to increasing the CO 2 level in the environment. CO 2 is captured and utilized as the carbon source for synthesizing various value-added products through physical and chemical methods. However, the physical and chemical techniques do not provide an ecologically friendly or costeffective procedure. Some advanced innovative, environmentally friendly green methods based on photosynthesis, microbial electrosynthesis, and gas fermentation processes can help to clean the atmosphere by sequestering CO 2 and producing value-added products from CO 2 . This approach has the potential to reduce greenhouse gas emissions, increase productivity, and create new economic opportunities. In this review, we found that the photosynthetic process has a high capacity for CO 2 sequestration. In contrast, the microbial electrosynthesis and gas fermentation processes have a high efficiency of value-added product synthesis. These biological CO 2 sequestration technologies contribute to the sustainability of the global carbon process. However, each method has its own strengths and weaknesses, and the choice of method will depend on the specific goals and resources of a sequestration project. This report also defined the various influencing factors of photosynthetic, microbial electrosynthesis, and gas fermentation processes for optimized development of these technologies, while challenges and future directions are also discussed.

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Section: Biological Methods Of Carbon Dioxide (Co2) Sequestrationmentioning

confidence: 99%

Review and Perspectives of Emerging Green Technology for the Sequestration of Carbon Dioxide into Value-Added Products: An Intensifying Development

Kumar

Jujjavarapu

2023

Energy Fuels

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“…Selectively enriched carboxydotrophic microbiome from the previously operated lab-scale C1 gas fermenter was used as seed culture in the MES [ 3 ]. Culture (10%; v / v ) was inoculated prior to the experimental operation.…”

Section: Methodsmentioning

confidence: 99%

“…Samples were diluted and subjected to filtration (0.2 micron) prior to HPLC analysis. Elution at a rate of 0.5 mL/min in isocratic mode was employed by using ultrapure water as the eluent (mobile phase) with 20 µL of injected sample volume [ 3 , 10 ].…”

Section: Methodsmentioning

confidence: 99%

“…Climate change issues, biosphere alteration and biodiversity loss are some of the critical challenges [ 1 , 2 , 3 , 4 ]. Some industrial activities release synthesis gas composed of carbon monoxide (CO), carbon dioxide (CO 2 ) and hydrogen (H 2 ) in different fractions [ 5 , 6 , 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

“…Some industrial activities release synthesis gas composed of carbon monoxide (CO), carbon dioxide (CO 2 ) and hydrogen (H 2 ) in different fractions [ 5 , 6 , 7 , 8 ]. Varies conventional strategies such as capture and storage are employed to mitigate the greenhouse gas (GHG) emissions [ 3 , 8 , 9 , 10 ]. Microbial mediated process of carbon sequestration, which is considered a potential strategy, can also play a crucial role in this regard [ 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Syngas Fermentation to Acetate and Ethanol with Adaptative Electroactive Carboxydotrophs in Single Chambered Microbial Electrochemical System

Tharak

Mohan

2022

Micromachines

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Microbial electrosynthesis system (MES; single-chambered) was fabricated and evaluated with carbon cloth/graphite as a working/counter electrode employing an enriched microbiome. Continuous syngas sparging (at working electrode; WE) enabled the growth of endo electrogenic bacteria by availing the inorganic carbon source. Applied potential (−0.5 V) on the working electrode facilitated the reduction in syngas, leading to the synthesis of fatty acids and alcohols. The higher acetic acid titer of 3.8 g/L and ethanol concentration of 0.2 g/L was observed at an active microbial metabolic state, evidencing the shift in metabolism from acetogenic to solventogenesis. Voltammograms evidenced distinct redox species with low charge transfer resistance (Rct; Nyquist impedance). Reductive catalytic current (−0.02 mA) enabled the charge transfer efficiency of the cathodes favoring syngas conversion to products. The surface morphology of carbon cloth and system-designed conditions favored the growth of electrochemically active consortia. Metagenomic analysis revealed the enrichment of phylum/class with Actinobacteria, Firmicutes/Clostridia and Bacilli, which accounts for the syngas fermentation through suitable gene loci.

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Bioconversion of CO2 into Valuables

Sharma,

Das,

Pant

2024

Green Chemistry and Sustainable Technology

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Design and evaluation of gas fermentation systems for CO2 reduction to C2 and C4 fatty acids: Non-genetic metabolic regulation with pressure, pH and reaction time

Cited by 15 publications

References 49 publications

Review and Perspectives of Emerging Green Technology for the Sequestration of Carbon Dioxide into Value-Added Products: An Intensifying Development

Review and Perspectives of Emerging Green Technology for the Sequestration of Carbon Dioxide into Value-Added Products: An Intensifying Development

Syngas Fermentation to Acetate and Ethanol with Adaptative Electroactive Carboxydotrophs in Single Chambered Microbial Electrochemical System

Bioconversion of CO2 into Valuables

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