Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 410123
Title Autogenerative high pressure digestion: anaerobic digestion and biogas upgrading in a single step reactor system
Author(s) Lindeboom, R.E.F.; Fermoso, F.G.; Weijma, J.; Zagt, K.; Lier, J.B. van
Source Water Science and Technology 64 (2011)3. - ISSN 0273-1223 - p. 647 - 653.
DOI http://dx.doi.org/10.2166/wst.2011.664
Department(s) Sub-department of Environmental Technology
Publication type Refereed Article in a scientific journal
Publication year 2011
Keyword(s) biogas - gasproductie - biochemische omzettingen - methaan - anaërobe afbraak - drukbehandeling - kooldioxide - oplosbaarheid - anaërobe behandeling - afvalwaterbehandeling - biobased economy - gas production - biochemical pathways - methane - anaerobic digestion - pressure treatment - carbon dioxide - solubility - anaerobic treatment - waste water treatment
Categories Bioenergy / Waste Water Treatment
Abstract Conventional anaerobic digestion is a widely applied technology to produce biogas from organic wastes and residues. The biogas calorific value depends on the CH4 content which generally ranges between 55 and 65%. Biogas upgrading to so-called ‘green gas’, with natural gas quality, generally proceeds with add-on technologies, applicable only for biogas flows >100 m3/h. In the concept of autogenerative high pressure digestion (AHPD), methanogenic biomass builds up pressure inside the reactor. Since CO2 has a higher solubility than CH4, it will proportion more to the liquid phase at higher pressures. Therefore, AHPD biogas is characterised by a high CH4 content, reaching equilibrium values between 90 and 95% at a pressure of 3–90 bar. In addition, also H2S and NH3 are theoretically more soluble in the bulk liquid than CO2. Moreover, the water content of the already compressed biogas is calculated to have a dew point
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