Gas production during refuse decomposition
Identifieur interne : 000C32 ( Istex/Curation ); précédent : 000C31; suivant : 000C33Gas production during refuse decomposition
Auteurs : G. J. Farquhar [Canada] ; F. A. Rovers [Canada]Source :
- Water, Air, and Soil Pollution [ 0049-6979 ] ; 1973-12-01.
Abstract
Abstract: Gas production in sanitary landfills is a subject of much concern because of the potential hazards of CH4 combustion and of groundwater contamination by CO2. This study investigated the pattern of sanitary landfill gas production and the factors which affect it. A basis for study was prepared by examining factors which influence gas production in soil and sewage sludge digesters. The factors studied included moisture content, temperature, pH, alkalinity, Eh, and nutrition. It was then undertaken to determine whether or not this information was applicable to the landfill. A pattern for landfill gas production was proposed based on the assumption that an anaerobic environment would be achieved and maintained after refuse placement. Four phases were identified: I. Aerobic; II. Anaerobic Non-Methanogenic; III. Anaerobic Methanogenic Unsteady; and IV. Anaerobic Methanogenic Steady. The duration of these phase and the relative amounts of gases produced within each phase were studied. An investigation of information available on factors affecting gas production in sanitary landfills also was made. It was found that, in general, the principles developed from the study of gas production in other media were applicable to the landfill environment. It was found that gas production increases with increased moisture content but that conditions of high infiltration are often conducive to reduction in gas production apparently caused by modifications to the microbial environment. There appears to exist a typical pattern of temperature variation within the landfill with a peak temperature being reached during the initial phase of aerobic decomposition. The magnitude of this peak is related to the refuse temperature at placement. Subsequent temperatures are lower and tend to fluctuate with season. Optimum temperatures for gas production are in the range of from 30°C to 35°C, however, landfill temperatures are often lower than this. Optimum levels of pH and alkalinity exist which maximize gas production rates. The types and amounts of gas produced are influenced by refuse composition. A scheme was proposed to illustrate how the various factors influence landfill gas production and how these may interact. Those factors over which some control may be exerted during landfill design and operation were identified.
Url:
DOI: 10.1007/BF00585092
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<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">Gas production during refuse decomposition</title><author><name sortKey="Farquhar, G J" sort="Farquhar, G J" uniqKey="Farquhar G" first="G. J." last="Farquhar">G. J. Farquhar</name><affiliation wicri:level="1"><mods:affiliation>Department of Civil Engineering, University of Waterloo, Waterloo, Ontario, Canada</mods:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Civil Engineering, University of Waterloo, Waterloo, Ontario</wicri:regionArea></affiliation></author><author><name sortKey="Rovers, F A" sort="Rovers, F A" uniqKey="Rovers F" first="F. A." last="Rovers">F. A. Rovers</name><affiliation wicri:level="1"><mods:affiliation>Department of Civil Engineering, University of Waterloo, Waterloo, Ontario, Canada</mods:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Civil Engineering, University of Waterloo, Waterloo, Ontario</wicri:regionArea></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:51855B1FEA01FFA09B079D027138C1757A583A3B</idno><date when="1973" year="1973">1973</date><idno type="doi">10.1007/BF00585092</idno><idno type="url">https://api-v5.istex.fr/document/51855B1FEA01FFA09B079D027138C1757A583A3B/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">000C32</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">000C32</idno><idno type="wicri:Area/Istex/Curation">000C32</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">Gas production during refuse decomposition</title><author><name sortKey="Farquhar, G J" sort="Farquhar, G J" uniqKey="Farquhar G" first="G. J." last="Farquhar">G. J. Farquhar</name><affiliation wicri:level="1"><mods:affiliation>Department of Civil Engineering, University of Waterloo, Waterloo, Ontario, Canada</mods:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Civil Engineering, University of Waterloo, Waterloo, Ontario</wicri:regionArea></affiliation></author><author><name sortKey="Rovers, F A" sort="Rovers, F A" uniqKey="Rovers F" first="F. A." last="Rovers">F. A. Rovers</name><affiliation wicri:level="1"><mods:affiliation>Department of Civil Engineering, University of Waterloo, Waterloo, Ontario, Canada</mods:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Civil Engineering, University of Waterloo, Waterloo, Ontario</wicri:regionArea></affiliation></author></analytic><monogr></monogr><series><title level="j">Water, Air, and Soil Pollution</title><title level="j" type="sub">An International Journal of Environmental Pollution</title><title level="j" type="abbrev">Water Air Soil Pollut</title><idno type="ISSN">0049-6979</idno><idno type="eISSN">1573-2932</idno><imprint><publisher>Kluwer Academic Publishers</publisher><pubPlace>Dordrecht</pubPlace><date type="published" when="1973-12-01">1973-12-01</date><biblScope unit="volume">2</biblScope><biblScope unit="issue">4</biblScope><biblScope unit="page" from="483">483</biblScope><biblScope unit="page" to="495">495</biblScope></imprint><idno type="ISSN">0049-6979</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0049-6979</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Abstract: Gas production in sanitary landfills is a subject of much concern because of the potential hazards of CH4 combustion and of groundwater contamination by CO2. This study investigated the pattern of sanitary landfill gas production and the factors which affect it. A basis for study was prepared by examining factors which influence gas production in soil and sewage sludge digesters. The factors studied included moisture content, temperature, pH, alkalinity, Eh, and nutrition. It was then undertaken to determine whether or not this information was applicable to the landfill. A pattern for landfill gas production was proposed based on the assumption that an anaerobic environment would be achieved and maintained after refuse placement. Four phases were identified: I. Aerobic; II. Anaerobic Non-Methanogenic; III. Anaerobic Methanogenic Unsteady; and IV. Anaerobic Methanogenic Steady. The duration of these phase and the relative amounts of gases produced within each phase were studied. An investigation of information available on factors affecting gas production in sanitary landfills also was made. It was found that, in general, the principles developed from the study of gas production in other media were applicable to the landfill environment. It was found that gas production increases with increased moisture content but that conditions of high infiltration are often conducive to reduction in gas production apparently caused by modifications to the microbial environment. There appears to exist a typical pattern of temperature variation within the landfill with a peak temperature being reached during the initial phase of aerobic decomposition. The magnitude of this peak is related to the refuse temperature at placement. Subsequent temperatures are lower and tend to fluctuate with season. Optimum temperatures for gas production are in the range of from 30°C to 35°C, however, landfill temperatures are often lower than this. Optimum levels of pH and alkalinity exist which maximize gas production rates. The types and amounts of gas produced are influenced by refuse composition. A scheme was proposed to illustrate how the various factors influence landfill gas production and how these may interact. Those factors over which some control may be exerted during landfill design and operation were identified.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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