Effects of earthworm cast and powdered activated carbon on methane removal capacity of landfill cover soils

Park, Soyoung; Lee, In-Cheol; Cho, Chang-Hwan; Sung, Kijune

doi:10.1016/j.chemosphere.2007.07.034

Cited by 34 publications

(12 citation statements)

References 15 publications

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Section: Biofilter Mediummentioning

confidence: 99%

“…The headspace gas concentrations in the vials were analyzed 12 and 24 h after zero time sampling. The gas was analyzed as described in the previous study (Park et al 2008). Before experiment, the vials filled with filter medium were pre-incubated under the same CH 4 concentration of 10% for 2 days to restore the methanotrophic activity and to remove lag time.…”

Section: Batch Testmentioning

confidence: 99%

“…In the model biofilter test, the landfill cover soil was amended with earthworm cast (6:4, w/w) to improve the CH 4 removal capacity of the biofilter (Park et al 2008). The characteristics of the landfill cover soil and the earthworm cast have been described in the previous research (Park et al 2008). The moisture content of the landfill cover soil amended with earthworm cast was adjusted to 15% (w/w) prior to use by adding water to enhance the microbial activity based on the results of the batch tests of this study.…”

Section: Biofilter Mediummentioning

confidence: 99%

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Biofiltration for Reducing Methane Emissions from Modern Sanitary Landfills at the Low Methane Generation Stage

Park

Lee²,

Ryu

et al. 2008

Water Air Soil Pollut

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The performance of a lab-scale model biofilter system was investigated to treat CH 4 gas emitted from modern sanitary landfills using landfill cover soil as the filter bed medium. From the batch experiment to measure the influence of moisture content and temperature of the filter medium on CH 4 removal capacity of a biofilter system, the optimum moisture content and temperature were found to be 10-15% by weight and 25-35°C, respectively. From the model biofilter experiment to measure the influence of inlet CH 4 concentration and landfill gas inflow rate on CH 4 removal capacity of a biofilter system, it was found that the removal percentage of CH 4 increased as the inlet CH 4 concentration decreased. Up to a landfill gas inflow rate of 1,000 mL min −1 (empty bed retention time=7.7 min), the CH 4 removal efficiency of the biofilter was able to reach 100%. Up to CH 4 loading rate of 278.5 g CH 4 m −3 h −1 , the ratio of elimination capacity to CH 4 loading rate was 1 while they were 0.68 and 0.34 at CH 4 loading rate of 417.8 and 557.1 g CH 4 m −3 h −1 , respectively. The CH 4 removal by biofilter was also confirmed by measuring the change of temperature and moisture content of the filter medium in the model biofilter. The results demonstrated that the installation of a properly managed biofilter system should be effective to reduce atmospheric CH 4 emissions from modern sanitary landfills at the low CH 4 generation stage.

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Section: Biofilter Mediummentioning

confidence: 99%

Section: Batch Testmentioning

confidence: 99%

Section: Biofilter Mediummentioning

confidence: 99%

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Biofiltration for Reducing Methane Emissions from Modern Sanitary Landfills at the Low Methane Generation Stage

Park

Lee²,

Ryu

et al. 2008

Water Air Soil Pollut

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“…In 2009, the US EPA reported emissions of 419.3 Tg CO 2 equivalents from the agricultural sector (EPA, 2011), therefore emissions from cattle carcass burial accounts for less than 1% of total emissions due to agricultural operations. It should be noted that under typical disposal scenarios, carcasses will be covered with a layer of soil, and partial oxidation of methane to carbon dioxide would occur in this soil layer (Park et al, 2008;Hilger et al, 2000). Any conversion of methane to carbon dioxide via methane oxidation in cover soils is not considered in the results presented here.…”

Section: Estimates Of Gas Production From Carcass Burialmentioning

confidence: 99%

Methane and carbon dioxide production from simulated anaerobic degradation of cattle carcasses

Qi¹,

Saunders²,

Bartelt–Hunt³

2012

Waste Management

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“…Microbial CH 4 oxidation in conventional soil covers of typical landfills has been reported to be effective in reducing the amount of CH 4 emitted (De Visscher et al 2001;Hilger et al 2000;Park et al 2008) and has been shown to be dependent on environmental factors including soil moisture content, soil temperature, and ammonium nitrogen content (De Visscher et al 2001;Christophersen et al 2000;. The study by Park et al (2002) found that a biofilter with soil medium was an effective means to oxidize CH 4 provided that the proper environmental conditions can be maintained for the growth of soil methanotrophs.…”

Section: Introductionmentioning

confidence: 96%

Comparison study of methane emissions from landfills with different landfill covers

et al. 2009

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Atmospheric methane, a more effective heattrapping gas than CO 2 that may affect climate change, has its greatest man-made source in the US from municipal solid waste (MSW) landfills. Consequently, the wise management of landfills can reduce these greenhouse gas emissions to the atmosphere. Methane from modern MSW landfills built with composite covers is frequently vented directly to the atmosphere. Biofiltration of landfill gas could oxidize CH 4 to CO 2 and water. Methane oxidation in old landfills with conventional soil covers can be effective in reducing the amount of CH 4 emitted. In this study, comparison of methane emissions from three different landfill covers was conducted. Methane emissions from old landfills constructed with conventional soil covers, modern MSW landfills constructed with composite covers, and modern MSW landfills constructed with composite covers plus biofilters were calculated using the calculated CH 4 oxidation rates. The results showed that an average of only 14% of the generated CH 4 was emitted from landfills with modern composite covers plus biofilters, and an average of 85% of the generated CH 4 was emitted from landfills with conventional covers when 100% of the generated CH 4 emissions to the atmosphere from landfills with modern composite covers was assumed. By comparing the CH 4 emission rates from three different landfill types, the use of a properly sized biofilter should be an effective technique to reduce CH 4 emissions from landfills across the USA and potentially in many other areas of the world.

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Effects of earthworm cast and powdered activated carbon on methane removal capacity of landfill cover soils

Cited by 34 publications

References 15 publications

Biofiltration for Reducing Methane Emissions from Modern Sanitary Landfills at the Low Methane Generation Stage

Biofiltration for Reducing Methane Emissions from Modern Sanitary Landfills at the Low Methane Generation Stage

Methane and carbon dioxide production from simulated anaerobic degradation of cattle carcasses

Comparison study of methane emissions from landfills with different landfill covers

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