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Content with label bacteria in REBEL WP7: Bioenergy (See content from all spaces)
Related Labels: table, bioethanol, hydrolysis, bioenergy, inhibitors, degradation, ph-value, biophotolysis, biogas, figure, substance, cyanobacteria, yeasts, continuous-fermentation, fungi, fermentation, substrate, ssf, photo-fermentation, more »

Page: Fermentation
Lignocellulosic biomass is hydrolyzed by explained treatments (mostly by acid treatment) (chapter "Hydrolysis of lignocellulosic biomass). The obtained hydrolysate (mixed sugarsolution) is then fermented by microorganisms (e.g. bacteria, yeast). This hydrolysate (mixed sugarsolution) often contains not only glucose, but also other ...
Other labels: fed-batch, bioethanol-production, lignocellulosic-materials, fermentation, bioethanol, bioenergy, yeasts, table
Page: Hydrogen-producing microorganisms
Several bacteria from different genera are able to produce hydrogen. Major group constitute stringent anaerobic microorganisms, such as clostridia, paunch bacteria or hyperthermophilic archae bacteria. Additionally, facultative anaerobe, e.g. enterobacter, e.coli or citrobacter can produce hydrogen ...
Other labels: hydrogen-production, hydrogen, microorganisms, bioenergy, figure, narrative-text
Page: Hydrolysis of lignocellulosic biomass
Hydrolysis is a chemical process, where a molecule is cleaved into two parts by adding a molecule of water. One fragment of the molecule gains a hydrogen ion (H ). The other group collects the remaining hydroxyl group (OH − ). After pretreatment of lignocellulosic material, the cellulose ...
Other labels: sscf, ssf, fungi, shf, bioethanol-production, lignocellulosic-materials, fermentation, bioethanol
Page: Inhibiting Factors
Inhibitors are substances, which are toxic for bacteria in very low amounts and therefore handicap the degradation process. A distinction is drawn between inhibitors, which get into the fermenter by addition of substrate and inhibitors, which arise as intermediate out of the individual degradation steps. Exceeding ...
Other labels: biogas, degradation, biogas-production, bioenergy, substance, inhibitors, narrative-text
Page: Nutrient supply
combination of the substrate has a heavy effect on fermentation, because out of the used substrate as much methane as possible should be produced. Bacteria, especially methane bacteria, need micronutrients and nutrients for growing (shown in Figure 11). For an optimal biogas yield ...
Other labels: biogas, biogas-production, nutrients, bioenergy, substrate, figure, narrative-text
Page: pH-value
pHvalue is similar to temperature. Bacteria of the individual degradation steps are assigned to different pHvalues, where they have their optimal growth. The pHoptimum for the hydrolyzing and acidogenetic bacteria lies between pH 4,5 and 6,3. Below a pH of 4,5 there is also acidification, but there is a slide to fermentation ...
Other labels: biogas, biogas-production, bioenergy, ph-value, narrative-text
Page: Process of biological hydrogen production
Biological processes of hydrogen production have significant advantages compared to conventional thermal processes. Firstly, they are partly more sustainable, as they use renewable energy sources for production of hydrogen. Secondly, they are less energyintensive, because most processes are conducted at moderate temperatures ...
Other labels: dark-fermentation, biophotolysis, photo-fermentation, hydrogen-production, hydrogen, bioenergy, cyanobacteria, narrative-text
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