Syngas fermentation to bioethanol

Monir, Minhaj Uddin; Yousuf, Abu; Aziz, Abdul

doi:10.1016/b978-0-12-815936-1.00006-x

Cited by 7 publications

(3 citation statements)

References 53 publications

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“…Syngas can also be used as a feed in a fermenter for its enzymatic conversion into ethanol. 69 In this regard, there is a growing interest in developing a chemical−catalytic route for ethanol production from glucose and preferably directly from cellulose. 70 Apart from the advantages of chemical−catalytic routes discussed in the introduction, there are other notable advantages in this case.…”

Section: Ethylenementioning

confidence: 99%

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Sustainable Synthesis of Drop-In Chemicals from Biomass via Chemical Catalysis: Scopes, Challenges, and the Way Forward

Dutta

2023

Energy Fuels

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A handful of small organics, namely, ethylene, propylene, butadiene, benzene, toluene, xylenes, and methanol, produced from petroleum and other fossilized carbon-based resources, can produce practically all petrochemicals and synthetic organic polymers used in the industrialized societies. The molecules mentioned above, often referred to as primary petrochemicals, must be sourced from renewable carbon feedstock to achieve the long-aspired all-around sustainability in chemical manufacturing. Significant efforts have been devoted to developing efficient chemical–catalytic pathways for selectively converting biomolecules and biopolymers into these petroleum-derived chemical platforms. The processes take advantage of prevalent petrorefinery infrastructure, well-documented synthetic value addition pathways of the chemical platforms, and established markets of the derived products. Relative merits and demerits of various catalytic routes in producing the aforementioned primary petrochemicals from renewable biomass have been deliberated. This review elaborates on the synthetic methodologies available for synthesizing the drop-in replacement of primary petrochemical from renewable biomass, focusing on process selectivity, feedstock selection, and catalyst performance. The critical analyses presented in this review will assist in appraising the research accomplishments to date, identifying the bottlenecks, and realigning the future perspectives.

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Section: Ethylenementioning

confidence: 99%

“…The major challenge in this process is to develop an efficient catalytic process that affords an acceptable yield of ethanol and is conveniently isolated from the reaction mixture. Syngas can also be used as a feed in a fermenter for its enzymatic conversion into ethanol …”

Section: Ethylenementioning

confidence: 99%

Sustainable Synthesis of Drop-In Chemicals from Biomass via Chemical Catalysis: Scopes, Challenges, and the Way Forward

Dutta

2023

Energy Fuels

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“…Beyond a certain limit, any further increase in the flow rate will result in a heterogeneous flow which causes back mixing of the gaseous components. [127,130] In addition, it has been reported by various researchers that at high throughput rates of gas inside a bubble column the recirculation rates of liquid increase substantially. [123,131,132] This results in the rise in the velocity of the bubbles becoming comparable to the slip velocity, which in turn results in a lower gas hold up of approximately 30%.…”

Section: Bubble Column Bioreactorsmentioning

confidence: 99%

Bioconversion of CO₂ and potential of gas fermentation for mainstream applications: Critical advances and engineering challenges

Malusare,

Ghumra,

Yadav

2023

Can J Chem Eng

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The undesirable consequences of climate change are attributed to the ever‐increasing emissions of greenhouse gases, especially carbon dioxide. For the sustainable development of human society, there is an urgent need to develop novel techniques for efficient conversion and utilization of carbon dioxide. Hence, carbon capture and storage, artificial bioconversion of carbon dioxide are topics of great interest for current researchers across the globe. Here, we elucidate the different techniques of carbon fixation, which fall under the broad categories of natural fixation pathways, thermo‐catalytic conversion techniques, and synthetic carbon fixation pathways. Based on a comparative analysis, gas fermentation is a promising method for the microbial conversion of CO2‐containing gases into fuels and chemicals. However, for mainstream applications, in‐depth reviews of different reactor configurations and the various engineering aspects related to process development are still lacking. We have analyzed the published literature relating to artificial bioconversion of carbon dioxide and focused on the factors like equipment selection and reactor design that can assist in scale‐up of gas fermentation technology. The review provides an in‐depth understanding of engineering aspects related to stirred tank and bubble column reactors, focusing on the technical design parameters and discussing the conditions for optimal operation and performance during commercial gas fermentation processes.

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Enhanced Hydrogen Generation from Empty Fruit Bunches by Charcoal Addition into a Downdraft Gasifier

Monir¹,

Aziz

et al. 2020

Chem Eng & Technol

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Hydrogen production by co‐gasification of empty fruit bunches of palm oil could be enhanced by adding charcoal. Physiochemical characterization of raw feedstocks was performed to determine their exergy potentiality. The raw feedstocks, gasified charcoal, and the end product of produced gas were analyzed by different techniques. Gasification experiments were performed using a pilot‐scale downdraft gasifier. The heating value, composition of product gas, yield of hydrogen, and exergy efficiency were used to verify the improvement of hydrogen production during the co‐gasification process. Charcoal with empty fruit bunches of palm oil leads to a much higher yield of hydrogen than lower charcoal ratios or solely empty fruit bunches. This enhanced hydrogen fuel can contribute to future energy demand.

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Syngas fermentation to bioethanol

Cited by 7 publications

References 53 publications

Sustainable Synthesis of Drop-In Chemicals from Biomass via Chemical Catalysis: Scopes, Challenges, and the Way Forward

Sustainable Synthesis of Drop-In Chemicals from Biomass via Chemical Catalysis: Scopes, Challenges, and the Way Forward

Bioconversion of CO₂ and potential of gas fermentation for mainstream applications: Critical advances and engineering challenges

Enhanced Hydrogen Generation from Empty Fruit Bunches by Charcoal Addition into a Downdraft Gasifier

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Syngas fermentation to bioethanol

Cited by 7 publications

References 53 publications

Sustainable Synthesis of Drop-In Chemicals from Biomass via Chemical Catalysis: Scopes, Challenges, and the Way Forward

Sustainable Synthesis of Drop-In Chemicals from Biomass via Chemical Catalysis: Scopes, Challenges, and the Way Forward

Bioconversion of CO2 and potential of gas fermentation for mainstream applications: Critical advances and engineering challenges

Enhanced Hydrogen Generation from Empty Fruit Bunches by Charcoal Addition into a Downdraft Gasifier

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Product

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Bioconversion of CO₂ and potential of gas fermentation for mainstream applications: Critical advances and engineering challenges