Air and landfill gas movement through passive gas vents installed in closed landfills

Kim, Hee-Jong; Yoshida, Hideki; Matsuto, Toshihiko; Tojo, Yasumasa; Matsuo, Takayuki

doi:10.1016/j.wasman.2009.10.005

Cited by 26 publications

(18 citation statements)

References 7 publications

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“…Three routes of air intrusion can be inferred from the IPCC guidelines -(1) the air diffused through the top of ventilation pipes, (2) the D 2 0 1 0 -1 s t D 2 0 1 0 -2 n d D 2 0 1 1 -1 s t J 2 0 1 0 -1 s t J 2 0 1 0 -2 n d J 2 0 1 1 -1 s t O 2 0 1 0 -1 s t O 2 0 1 0 -2 n d O 2 0 1 1 -1 s t W 2 0 0 8 -1 s t W 2 0 0 8 -2 n d W 2 0 0 9 -1 s t W 2 0 0 9 -2 n d W 2 0 1 0 -1 s t W 2 0 1 0 -2 n d W 2 0 1 1 -1 s t C 2 0 0 9 -1 s t C 2 0 0 9 -2 n d C 2 0 1 0 -1 s t C 2 0 1 0 -2 n d Kim et al (2010) 1.0 About 20% -Field measurement Matsufuji et al (1996) 20 80 0.25 -Lysimeter test -Reference of IPCC guideline air passed through leachate drainage pipes and (3) the air passed through the surface covers of landfills. Air intrusion through the first route can occur in both anaerobic and semi-aerobic landfills.…”

Section: Ch 4 + Co 2 % In Landfill Gasmentioning

confidence: 99%

Field assessment of semi-aerobic condition and the methane correction factor for the semi-aerobic landfills provided by IPCC guidelines

Jeong

Nam

et al. 2015

Waste Management

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Section: Ch 4 + Co 2 % In Landfill Gasmentioning

confidence: 99%

Field assessment of semi-aerobic condition and the methane correction factor for the semi-aerobic landfills provided by IPCC guidelines

Jeong

Nam

et al. 2015

Waste Management

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“…Meanwhile, H 2 S was measured as 14-85 ppm, with an average of approximately 40 ppm. Kim et al (2010) reported that the oxygen/nitrogen concentration ratio of landfill gas was much less than that in the air, and that the gas velocity released from the gas vent was in the range of 0.3 to 1.2 m/s. These results suggest that a large mass of oxygen is consumed by aerobic biodegradation.…”

Section: Gas Concentration In the Gas Ventmentioning

confidence: 99%

“…The fact that the gas temperature was 30 o C higher than the environment also supports the occurrence of aerobic biodegradation. Kim et al (2010) examined a landfill in which gas vents were installed after closure and not connected to the leachate collection pipes.…”

Section: Gas Concentration In the Gas Ventmentioning

confidence: 99%

Assessment of internal condition of waste in a roofed landfill

Zhang

Matsuto

2013

Waste Management

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“…However, it is especially suitable for the areas in tropical climate and actually installation of this structure to several landfills in Southeast Asian country showed success (Chong et al, 2005;Matsufuji and Tachifji, 2007). In the survey conducted by Kim et al (2010), they identified upward gas velocity in many vents. However, they also identified existence of oxygen and nitrogen in deep part of the vents.…”

Section: Introductionmentioning

confidence: 99%

Effectiveness of the Vertical Gas Ventilation Pipes for Promoting Waste Stabilization in Post-Closure Phase

Tojo

Kishizawa

Matsuto

et al. 2015

J. Rekayasa Kim. Lingkung.

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To make inside of the municipal solid waste (MSW) landfill aerobic as much as possible is thought to be preferable for promoting waste stabilization, reducing pollutant's load in leachate, minimizing greenhouse gas emission and shortening post-closure-care period. In Japan, installation of semi-aerobic landfill structure has widely spread in order to promote waste stabilization in MSW landfill from 1980s. In semi-aerobic landfill structure, outlet of main leachate collection pipe is opened to atmosphere. Heat generated by aerobic degradation of waste causes natural convection and natural aeration arises from the outlet of leachate collection pipe to the gas vents. It is so-called stack effect. This air flow is thought to be effective for purifying leachate flowing through drainage layer and leachate collection pipes. And it is also thought to be contributing to expanding aerobic region in waste layer in landfill. Recently, measures attempting the promotion of waste stabilization are taken at several landfills at where stabilization of waste delays, in which many vertical gas vents are newly installed and close structure to semi-aerobic landfill is created. However, in many cases, these gas vents are not connected to leachate collection pipes. Many vertical gas vents are just installed without scientific proof regarding whether they can contribute for waste stabilization. In this study, how such installation of gas vents is effective for waste stabilization and aerobization of waste layer was discussed by numerical analysis. In numerical analysis, heat transfer, gas movement by pressure, gas diffusion, biological degradation of organic matter, and heat generation by biodegradation were taken into account. Simulations were carried out by using the general purpose simulator of finite element method. Three types of landfill structure were assumed. As the results, the following information were obtained. In dig-down type landfill, installation of gas vents has no effect for changing air flow. On the other hand, in pile-up type landfill, installation of vertical gas vents can accelerate air invasion and significantly promote waste stabilization, if it has high permeable horizontal layer. Keywords: gas ventilation pipe, natural convection, semi-aerobic landfill, waste stabilization AbstrakPembuatan kondisi yang sangat aerobik dalam sistem penimbunan limbah padat domestik dilakukan dengan menciptakan stabilisasi limbah, mengurangi beban pencemaran lindi, mengurangi emisi gas rumah kaca, dan memperpendek periode penutupan akhir. Di Jepang, pemasangan struktur penimbunan semi-aerobik sudah secara luas untuk memperkenalkan stabilisasi limbah pada proses penimbunan sejak tahun 1980-an. Pada struktur tersebut, keluaran pipa pengumpul lindi terbuka ke atmosfer. Panas yang dibangkitkan dari degradasi limbah menyebabkan konveksi alami dan aerasi alami timbul dari keluaran pipa pengumpul lindi menuju cerobong gas. Ini disebut pengaruh cerobong asap. Aliran udara dianggap efektif untuk memurnikan lindi yang mengalir melal...

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Air and landfill gas movement through passive gas vents installed in closed landfills

Cited by 26 publications

References 7 publications

Field assessment of semi-aerobic condition and the methane correction factor for the semi-aerobic landfills provided by IPCC guidelines

Field assessment of semi-aerobic condition and the methane correction factor for the semi-aerobic landfills provided by IPCC guidelines

Assessment of internal condition of waste in a roofed landfill

Effectiveness of the Vertical Gas Ventilation Pipes for Promoting Waste Stabilization in Post-Closure Phase

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