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Landfill aerobic degradation

BIOLOGICAL PROPERTIES T.O.C. 500 ppm Koc 150 under anaerobic conditions, reductive dechlorination to vinyl chloride occurs under simulated anaerobic landfill conditions, degradation occurred in 1-3 weeks detection in water is by EPA Method 601 inert gas purge followed by gas chromatography with halide specific detection, and by EPA Method 624 gas chromatography plus mass spectrometry aerobic half-life 4 weeks-6 months anaerobic half-life 81 days-173 days... [Pg.297]

ASTM D7475-11, Standard Test Method for Determining the Aerobic Degradation and Anaerobic Biodegradation of Plastic Materials under Accelerated Bioreactor Landfill Conditions, American Society for Testing and Materials, PA, USA, 2011. [Pg.26]

He, F, Yang, N., Gu, H., Zhang, H. Shao, L.J. 2011. N O and NHj emissions from a bioreactor landfill operated under limited aerobic degradation conditions. Environ Sci China) 23(6) 1011-1019. [Pg.58]

Hybrid (aerobic-anaerobic). The hybrid bioreactor landfill accelerates waste degradation by employing a sequential aerobic-anaerobic treatment to rapidly degrade organics in the upper sections of the landfill and collect gas from lower sections. Operation as a hybrid results in an earlier onset of methanogenesis compared to aerobic landfills. [Pg.640]

Degradation of solid waste materials in a landfill proceeds from aerobic to anaerobic decomposition very quickly, thereby generating gases that collect beneath the closure FML. Almost 98% of the gas produced is either carbon dioxide (CO2) or methane (CH4). Because C02 is heavier than air, it will move downward and be removed with the leachate. However, CH4, representing about 50% of the generated gas, is lighter than air and, therefore, will move upward and collect at the bottom of the facility s impermeable FML. If the gas is not removed, it will produce a buildup of pressure on the LML from beneath. [Pg.1139]

Ishigaki T, Sugano W, Nakanishi A, Tateda M, Dee M, Fujita M (2004) The degradability of biodegradable plastics in aerobic and anaerobic waste landfill model reactors. Chemosphere... [Pg.172]

Previous investigations showed that these detergent-derived compounds degrade more easily under aerobic then nnder anaerobic conditions (Sedlak and Booman, 1986 Branner et al., 1988). Application of the sludge to land exposes them to aerobic conditions. In order to evaluate the behavior of these same chemicals under anaerobic conditions, samples from slndge-only landfills were analyzed. [Pg.91]

Fig. 1 Hydrogen versus carbon isotopic shifts for MTBE. The solid lines illustrate both aerobic and anaerobic MTBE laboratory degradation studies with pure strains or mixed cultures, to date. Three field data sets are plotted open circles from nine different contaminated sites close to gasoline stations in the USA [66] solid triangles from a former industrial landfill in South America [65] and open squares from a refinery site in East Germany. The grey stars represent the 90% biodegradation point for each of the main MTBE fractionation patterns discovered so far... Fig. 1 Hydrogen versus carbon isotopic shifts for MTBE. The solid lines illustrate both aerobic and anaerobic MTBE laboratory degradation studies with pure strains or mixed cultures, to date. Three field data sets are plotted open circles from nine different contaminated sites close to gasoline stations in the USA [66] solid triangles from a former industrial landfill in South America [65] and open squares from a refinery site in East Germany. The grey stars represent the 90% biodegradation point for each of the main MTBE fractionation patterns discovered so far...

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