Effects of environmental factors on methane generation: Test Cell Study
This paper presents that how environmental factors such as temperature, pH, and ammonia nitrogen affected on methane production within a test cell. Test cell covered an area of 54 m2 and had a final waste height of average 3 meters by filling approximately 147 tons of municipal solid waste (MSW). Results showed that pH level did not affected on methane production from MSW deposited after changed waste policy, which limits food waste landfilling; however, ammonia nitrogen level and waste temperature affected on methane prodution. Especially, the inhibition of methane production within landfills was severe when waste temperature is below 15Ž and during initial anaerobic decomposition process.
Anaerobic decomposition of municipal solid waste (MSW) deposited within landfills generates significant amounts of landfill gas comprising 60% methane and 40% carbon dioxide (v/v), together with numerous trace gases (Christensen et al., 1996). Landfills have been implicated as the largest anthropogenic source of atmospheric methane in the world (Bogner et al., 1995). As estimated 37% of Korea global methane emissions is attributed to landfills (KEEI, 2003). Landfills function as a closed system, thus, it was considered as an anaerobic reactor. Many environmental factors affected on methane production from MSW within a landfill. In the last a few years, the waste management policy in Korea has led to major changes in the composition of MSW deposited within landfills. Main waste policy was included the reduction of food waste generated through a nation-wide campaign, the obligatory buiding of facilities for food waste resourcification, the banning the direct landfill of food waste, the control of packaging material waste generation, the recycling of business designation system, etc. Shift in waste composition results in the change of methane potential of MSW and environmental factors, which affect on methane production. Each waste component has different methane potential as well as different biodegradability. The water content within a landfill has been dropped due to decreasing the amount of organic wastes with high water content. The nature of the organic material deposited within a landfill has been changed from relatively rapidly degradable to less well degradable nature. Temperature within a landfill has been changed due to the lack of rapidly degradable materials.
| Copyright: | © IWWG International Waste Working Group | |
| Quelle: | General Session B (Oktober 2007) | |
| Seiten: | 7 | |
| Preis: | € 7,00 | |
| Autor: | Han Seock Cho  Ph.D. Kyoung-Hoon Shim Ph.D. Joung Yeon Kim | |
| Artikel weiterleiten | In den Warenkorb legen
| Artikel kommentieren |
Diese Fachartikel könnten Sie auch interessieren:
CHARACTERIZATION OF ANAEROBIC CO-DIGESTION PROCESSES USING LABSCALE BATCH TESTS
© IWWG International Waste Working Group (10/2007)
Anaerobic digesters for sludge stabilisation are often under-loaded and their performance in term of biogas production is poor. Co-digestion with suitable organic substrates, such as the sourcesorted organic fraction of municipal solid wastes (Bolzonella et al., 2006, Davidsson et al., 2007), food waste (Zhang et al., 2007), farm wastes (Alatriste-Mondragón et al., 2006), septage and slaughterhouse wastewater (Caffaz et al., 2005), has been suggested to improve biogas production and several successful full scale experiences are now operating in Italy.
Auf dem Weg zur Norm Premium
© Rhombos Verlag (1/2006)
Die Entwicklung einer Standardmethode zur Bestimmung des biogenen Anteils in
Ersatzbrennstoffen macht Fortschritte
Voll unter Strom: Bis 2050 Versorgung durch Erneuerbare Energien möglich – vielleicht:
© Deutscher Fachverlag (DFV) (8/2010)
Die Europäische Klimastiftung (ECF) hat eine von McKinsey erstellte Studie zur Stromversorgung der Zukunft veröffentlicht.
Mass balance of three municipal solid waste landfilling schemes
© IWWG International Waste Working Group (10/2007)
The results presented in this paper are issued from ELIA (Environmental Landfill Impact Assessment) research program investigations conducted by the CRPE (Veolia Environmental Services Research Centre) and supported by ADEME (the French Agency for Environment and Energy Management). Three waste landfilling schemes have been evaluated through the construction and follow-up of semi-industrial devices. Mechanical and Biological Treatment (MBT) before landfilling has been compared to the conventional landfill and the concept of bioreactor. 34 months of monitoring led to the establishment of different mass balances (carbon, nitrogen) as well as the estimation of the dry mass losses occurring during the treatment and their repartition between the liquid and gaseous phases
ANAEROBIC BIODEGRADABILITY OF PLASTIC GARBAGE BAGS BASED ON STARCH POLYMER AND ALIPHATIC POLYESTER
© IWWG International Waste Working Group (10/2007)
Recently, there have been growing interests in biodegradable plastics to solve environmental problems caused by plastic wastes. Biodegradable plastics are made of high molecular compound, which is biodegraded by microorganisms and primarily transformed to CH4, CO2 and H2O. Biodegradable plastic had not been widely used because of high cost. However, continuous researches about raw materials make it possible to mass-produce and fall the cost of biodegradable plastic goods.
