biomass fermentation Articles

  • Potential of hydrogen production from organic Urban Solid Waste fermentation in Mexico

    Mexico generated 35.4 million tons of urban solid wastes in 2005 of which 51% were organic ones. This biomass can be fermented into H2 when H2-based technologies increase their market penetration for the year 2020. The purpose of this work was to review studies that have utilised organic solid wastes for fermentative H2 production and to evaluate the potential for Mexico. The experimental H2 ...


    By Inderscience Publishers

  • Supercritical water gasification of ethanol fermentation residue of seaweed: effect of sodium chloride salt

    The effects of sodium chloride salt on the supercritical water gasification of ethanol fermentation residue of seaweed with and without the presence of catalyst (activated carbon) were investigated. The presence of activated carbon did not affect the carbon gasification efficiency. By increasing the salt concentration, the carbon gasification efficiency is reduced until one point, the carbon ...


    By Inderscience Publishers

  • Effect of acetic acid in recycling water on ethanol production for cassava in an integrated ethanol–methane fermentation process

    Recently, the integrated ethanol–methane fermentation process has been studied to prevent wastewater pollution. However, when the anaerobic digestion reaction runs poorly, acetic acid will accumulate in the recycling water. In this paper, we studied the effect of low concentration of acetic acid (≤25 mM) on ethanol fermentation at different initial pH values (4.2, 5.2 or 6.2). At an initial pH ...


    By IWA Publishing

  • Efficiency analysis of hydrogen production methods from biomass

    Hydrogen is considered as a universal energy carrier for the future, and biomass has the potential to become a sustainable source of hydrogen. This article presents an efficiency analysis of hydrogen production processes from a variety of biomass feedstocks by a thermochemical method – gasification as well as biochemical methods – fermentation and anaerobic digestion. The exergetic ...


    By Inderscience Publishers

  • The feasibility of producing alcohol fuels from biomass in Australia

    Apart from cost, the net production of energy is the most important factor in evaluating the feasibility of producing renewable fuels from woody biomass. Unlike sugar, the effort required to make woody materials fermentable is considerable, and has been a major barrier to the use of such materials to produce renewable fuels. The Energy Profit Ratio (EPR) of fossil fuels is declining rapidly as ...


    By Inderscience Publishers

  • Status and trends for biomass use and consequences for waste management - the example of Germany

    While separate collection and treatment of organic waste in Germany had a magnitude of 100.000 Mg in 1985 it currently extends to 8.2 Mio. Mg of which about 50% each refers to biowaste and green waste respectively. However, a further potential of 8 million Mg of organic waste collected with other residual waste still exists. Rapidly increasing costs for the treatment of residual waste coupled ...


    By ORBIT e.V.

  • 20th Annual Presidential Green Chemistry Challenge Awards highlight biomass- and waste-to-resource technologies

    On July 13, 2015, the U.S. Environmental Protection Agency (EPA) announced the winners of the 20th Annual Presidential Green Chemistry Challenge Awards (PGCCA) and honored them at a ceremony at the National Academy of Sciences in Washington, D.C. The PGCCAs were created in partnership with the American Chemical ...


    By Bergeson & Campbell, P.C.

  • Green Energy Applications Guide to Flow Measurement

    Provides technical discussion and illustrations for nine (9) different green energy and green-house gas flow measurement applications.  Includes landfill gas, biomass fermentation, wastewater digesters, on-farm biogas recovery, ethanol production/refining, coal mine and coal bed methane (CMM, CBM), biomass gasification, flare gas and flue gas.  Discussion includes overview of each ...

  • Monitoring of digesters in biogas plants

    Renewable sources of energy are gaining steadily in importance. Leading the way is the use of methane gas obtained from fermentation processes in biogas plants. Overloading such plants with excessive biomass may have drastic economic consequences and may even inactivate the biomass, necessitating a cost-intensive restart. Adding too little biomass also has financial consequences, as less ...


  • Dreyer & Bosse deliver renewable energy CHP project to Sofia in Bulgaria

    The Sofia council decided to invest in renewable energy to make use of the many tons of biowaste (vegetative material),  20,000 tons per annum, from the waste removal collections that take place daily in Sofia and surrounding area. To make this possible it was decided to go for wet fermentation where the substrate or raw material ferments and the biogas is collected. After three weeks the ...

  • Biotransformation of rice straw by Phanerachaete chrysosporium and the related ligninolytic enzymes

    Biotransformation of lignin is related to the biomass utilisation of agricultural wastes. Ligninolytic enzyme from Phanerochaete chrysosporium plays an important role in biodegrading lignin and is specially concerned by researchers. The aim of the study is to optimise the conditions for producing ligninolytic enzymes in solid-state fermentation, and to biotransform the rice straw for the biomass ...


    By Inderscience Publishers

  • Exponential fed-batch strategy for enhancing biosurfactant production by Bacillus subtilis

    Surfactin produced by Bacillus subtilis BDCC-TUSA-3 from Maldex-15 was used as a growth-associated product in a conventional batch process. Maldex-15 is a cheap industrial by-product recovered during manufacturing of high fructose syrup from corn starch. Surfactin production was greatly improved in exponential fed-batch fermentation. Maldex-15 and other nutrients were exponentially fed into ...


    By IWA Publishing

  • Polyhydroxyalkanoate (PHA) production from sludge and municipal wastewater treatment

    Polyhydroxyalkanoates (PHAs) are biodegradable polyesters with comparable properties to some petroleum-based polyolefins. PHA production can be achieved in open, mixed microbial cultures and thereby coupled to wastewater and solid residual treatment. In this context, waste organic matter is utilised as a carbon source in activated sludge biological treatment for biopolymer synthesis. Within the ...


    By IWA Publishing

  • Biohydrogen production by anaerobic co–digestion of press mud and domestic sewage

    Anaerobic fermentation of press mud and sewage for biohydrogen production was conducted in six batch reactors for various total solid concentrations between 5–8.5%. Chemical oxygen demand, pH, total solid % for biohydrogen produced were monitored regularly. The experiments were conducted for 40 days to optimise the total solid content of the feed for maximum biohydrogen production. Effect of ...


    By Inderscience Publishers

  • Solution concepts for the production of biogas

    With its products that go to form part of biogas plants, it is not only a significant pioneering role that Hofstetter Umwelttechnik AG in Switzerland deserves. The company in Berne also adopts a leading position on the worldwide market for utilizing biogas. Hofstetter products – the socalled flares and compressor stations – are designed both for fermentation plants for biomass and for plants for ...


    By Hofstetter BV

  • Kinetics of xylose in hydrolysate using dilute sulphuric acid as catalyst

    In the technology of manufacturing fuel alcohol from biomass as feedstock, hydrolysis using dilute acid as catalyst is one way to produce fermentable saccharide. In this process, the yield of xylose is always low because of the degrading during the acid environment. In this paper, the degrading kinetics of xylose in the hydrolysate was investigated under the conventional process conditions of the ...


    By Inderscience Publishers

  • Modeling the Formation and Fate of Odorous Substances in Collection Systems

    A conceptual model that simulates the formation and fate of odorous substances in branched collection systems is presented. The model predicts the activity of the relevant biomass phenotypes under aerobic, anoxic and anaerobic conditions in force mains and gravity sewers. The formation and fate of individual, malodorous substances in the bulk water, the biofilms and the sediments are modeled. The ...

  • Energy from biogas

    From an ecological and economical perspective, biogas is an important source of energy. The fossil resources are limited, and they impose a high burden on the environment. A resourceconserving alternative made from biomass poses a different scenario. The raw material is renewable, and conversion only releases as much CO2 as was previously contained by the source material. With the technological ...


    By Triangle Ltd

  • Nitrification and denitrifying phosphorus removal in an upright continuous flow reactor

    Simultaneous nitrification and denitrifying phosphorus removal was achieved in a single-sludge continuous flow bioreactor. The upright bioreactor was aligned with a biomass fermenter (BF) and operated continuously for over 350 days. This study revealed that unknown bacteria of the Saprospiraceae class may have been responsible for the successful nutrient removal in this bioreactor. The ...


    By IWA Publishing

  • Where Do Ketones and Butanol Come From during ERD?

    Acetone, butanol and other ketones are often detected at low levels during anaerobic bioremediation (Jacob et al., Battelle Bioremediation Symposium Proceedings, 2005). These compounds can be produced during anaerobic fermentation by the bacterium Clostridium acetobutylicum and a variety of related organisms growing on substrates such as potatoes, corn, rye, millet, cheese whey, apple pomace, ...


    By EOS Remediation, LLC

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