Category Archives: Biomass Conversion

Biomass Conversion Processes

There are a number of technological options available to make use of a wide variety of biomass types as a renewable energy source. Conversion technologies may release the energy directly, in the form of heat or electricity, or may convert it into another form, such as liquid biofuel or combustible biogas. Various methods of conversion of biomass into useful energy […]

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Ionic Liquids Pretreatment Technology for Enzymatic Production of Monosugars

Lignocellulose provides a key sustainable source of biomass for transformation into biofuels and bioenergy products. However, lignocellulosic biomass is recal­citrant to biotransformation to sugars and other value-added products by microbial or enzymatic methods, which limits its use and the economically viable biocon­version [4]. The main goal of pretreatments is to increase the enzyme accessibility and improve the digestibility of cellulose […]

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4.5.1 How Green are ILs? Complete life cycle assessments of ILs have been attempted to estimate the cumulative energy demand (for synthesis and disposal), the environmental impact and the economic viability (cost of chemicals, energy, disposal, personnel, equipment, and processing). Due to the complexity of the IL life cycle and the limited data available, life cycle assessments have remained a […]

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Economic Aspects

Fermentation processes are exothermic as its products contain less energy than substrates. Theoretically, mass and energy yield of ABE fermentation is 37 and 94%, respectively calculated on the basis of energy of combustion and products ratio in the fermentation. During the study, it was suggested that yield of ABE fermentation might not be possible to meet its 100%, whereas product […]

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Escherichia coli

In E. coli, the obvious and successful strategy to increase ethanol production has been the expression of the ethanologenic pathway from Z. mobilis, with the genes encoding PDC and ADH II organized in a single plasmid, the PET operon [73, 76], the latter integrated in the chromosome [134]. Subsequent selection of mutants with high ADH activity and disrupted fumarate reductase […]

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