Much attention has been placed on finding efficient processes for the production of ethanol and other biofuels. One area that shows promise is the conversion of synthesis gas (syngas) to ethanol and hydrogen by both thermochemical and microbiological methods. Two promising methods for creating syngas are the gasification of plant biomass and the pyrolysis of carbonbased waste products. Overall ...

Integrated gasification combined cycle (IGCC) electric power generation systems with carbon capture and sequestration have desirable environmental qualities but are not profitable when the carbon dioxide price is less than approximately $50 per metric ton. We examine whether an IGCC facility that operates its gasifier continuously butstores the syngas and produces electricity only when daily pr...

Laminar flame speeds of undiluted syngas (H2/CO) mixtures have been studied at atmospheric conditions using chemiluminescence and schlieren techniques for a straight cylindrical burner apparatus. A wide range of mixture composition, from pure H2 to 1/99 % H2/CO, has been investigated for lean premixed syngas flames. To achieve a better flame stabilization and reduce flame flashback propensity, ...

Acetobacterium bakii DSM 8239 is an anaerobic, psychrophilic, and chemolithoautotrophic bacterium that is a potential platform for producing commodity chemicals from syngas fermentation. We report here the draft genome sequence of A. bakii DSM 8239 (4.14 Mb) to elucidate its physiological and metabolic properties related to syngas fermentation.

Clostridium aceticum DSM 1496 is a Gram-negative anaerobic chemolithoautotrophic acetogenic bacterium that is capable of producing commodity chemicals from syngas fermentation. In this study, we report the draft genome sequence of the C. aceticum DSM 1496 strain (4.16 Mb) to elucidate the syngas fermentation metabolic pathway.

Biomass gasification and subsequent conversion of this syngas to liquid hydrocarbons using Fischer– Tropsch (F–T) synthesis is a promising source of hydrocarbon fuels. However, biomass-derived syngas is different from syngas obtained from other sources such as steam reforming of methane. Specifically the H2/CO ratio is less than 1/1 and the CO2 concentrations are somewhat higher. Here, we repor...

The importance of syngas as intermediate product on the gas to chemicals route and for power generation with carbon dioxide separation for sequestration calls for new, innovative processes. Lurgi took up this challenge to fundamentally improve syngas production technology and decided to build a multi process demonstration unit for syngas production technologies. This project is jointly pursued ...

An economic analysis of a bio-gasification facility requires an understanding of its syngas production cost. The objectives of this study were to develop a Cost Analysis Model (CAM) to determine the costs associated with syngas production at different production capacities. The CAM was developed using on a graphical user interface (GUI) programmed in Microsoft Visual Studio 2008 software, mathe...

Hydrogen may be considered a potential fuel for the future since it is carbon-free and oxidized to water as a combustion product. Bioconversion of synthesis gas (syngas) to hydrogen was demonstrated in continuous stirred tank bioreactor (CSTBR) utilizing acetate as a carbon source. An anaerobic photosynthetic bacterium, Rhodospirillum rubrum catalyzed water-gas shift reaction which was applied ...

In order to examine whether catalyst granular size was a factor for tar removal and syngas composition enhancement, three Ni/char catalysts with 90-100 mesh (Ni/SC), 50-60 mesh (Ni/MC), and 20-30 mesh (Ni/LC) size were prepared with a mechanical mixing method and tested in an updraft gasifier. Reforming parameters investigated were the reaction temperature (650-850C), the Ni loading (5-20% of ...