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7. Biogas composition, recovery and purification
As we saw earlier, anaerobic digestion essentially transforms degraded organic matter into an energetic gas called "biogas", made up of various gases resulting from biological reactions.
7.1 Biogas composition
The composition of the biogas produced varies in proportions that can be significant, and is linked to several factors that are not fully known. These include :
the nature of the effluent to be treated (proportion of carbon, hydrogen, nitrogen, sulfur and oxygen);
effluent pre-acidification rate at reactor inlet;
effluent TSS content;
and also the purification technology used.
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Biogas composition, recovery and purification
Nitrogen fate
Also in our database
Bibliography
Websites
General information site on methanization and biogas (page consulted August 6, 2008) http://www.lebiogaz.info
Regulatory, technological and economic information on biogas and its valorization (page consulted August 6, 2008) http://www.biogaz.atee.fr
Events
Pollutec, the international trade show for environmental equipment, technologies and services, is held every two years in Lyon (even-numbered years). http://www.pollutec.com
Standards and norms
French standards
- Electrical equipment for explosive gas atmospheres – Part 10: Hazardous location classification - NF EN 60079-10 - 08-03
- Explosive atmospheres prevention and protection – Part 1: Basic concepts and methodology - PR NF EN 1127-1 - 06-09
- Water quality – Determination of 33 elements by inductively coupled plasma atomic emission spectroscopy - NF EN ISO 11885 - 1998
Dutch...
Regulations
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Classification of Atex zones
European Directive 1999/92/EC of the European Parliament and of the Council of December 16, 1999, on minimum requirements for improving the safety and health protection of workers potentially at risk from explosive atmospheres (OJEC, January 28, 2000). This directive was transposed into French law by a decree published in the JORF (n° 303 of December...
Directory
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Manufacturers – Suppliers – Distributors
Rather than providing a non-exhaustive list of suppliers, which is bound to change rapidly from time to time, we prefer to provide a more universal decision-making aid (see additional technical data section).
Organizations – Federations – Associations
Association Technique Énergie Environnement ATEE...
Statistical and economic data
Given the difficulty of keeping up-to-date information on anaerobic references, you will find below economic data dating from 2002. Only industrial plants larger than 2 to 3 tons COD/day could be identified through published manufacturer data, or by taking into account plants known but not precisely referenced by the manufacturer, or in databases specific to each industry. However, these data show that the...
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