Carbon isotopic characterisation and oxidation of UK landfill methane emissions by atmospheric measurements. / Bakkaloglu, Semra; Lowry, David; Fisher, Rebecca; France, James; Nisbet, Euan.

In: Waste Management, Vol. 132, 02.08.2021, p. 162-175.

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Carbon isotopic characterisation and oxidation of UK landfill methane emissions by atmospheric measurements. / Bakkaloglu, Semra; Lowry, David; Fisher, Rebecca; France, James; Nisbet, Euan.

In: Waste Management, Vol. 132, 02.08.2021, p. 162-175.

Research output: Contribution to journalArticlepeer-review

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@article{a8a3d91cd2624016add7fac0d496cc35,
title = "Carbon isotopic characterisation and oxidation of UK landfill methane emissions by atmospheric measurements",
abstract = "Biological oxidation of methane in landfill cover material can be calculated from the carbon isotopic signature (delta13CCH4) of emitted CH4. Enhanced microbial consumption of methane in the aerobic portion of the landfill cover is indicated by a shift to heavier (less depleted) isotopic values in the residual methane emitted to air. This study was conducted at four landfill sites in southwest England. Measurement of CH4 using a mobile vehicle mounted instrument at the four sites was coupled with Flexfoil bag sampling of ambient air for high-precision isotope analysis. Gas well collection systems were sampled to estimate landfill oxidised proportion. Closed or active status, seasonal variation, cap stripping and site closure impact on landfill isotopic signature were also assessed. delta13CCH4 values ranged from -60 to -54‰, with an average value of -57 ± 2‰. Methane emissions from active cells are more depleted in 13C than closed sites. Methane oxidation, estimated from the isotope fractionation, ranged from 2.6 to 38.2%, with mean values of 9.5% for active and 16.2% for closed landfills, indicating that oxidised proportion is highly site specific.",
author = "Semra Bakkaloglu and David Lowry and Rebecca Fisher and James France and Euan Nisbet",
year = "2021",
month = aug,
day = "2",
doi = "10.1016/j.wasman.2021.07.012",
language = "English",
volume = "132",
pages = "162--175",
journal = "Waste Management",
issn = "0956-053X",
publisher = "Elsevier Limited",

}

RIS

TY - JOUR

T1 - Carbon isotopic characterisation and oxidation of UK landfill methane emissions by atmospheric measurements

AU - Bakkaloglu, Semra

AU - Lowry, David

AU - Fisher, Rebecca

AU - France, James

AU - Nisbet, Euan

PY - 2021/8/2

Y1 - 2021/8/2

N2 - Biological oxidation of methane in landfill cover material can be calculated from the carbon isotopic signature (delta13CCH4) of emitted CH4. Enhanced microbial consumption of methane in the aerobic portion of the landfill cover is indicated by a shift to heavier (less depleted) isotopic values in the residual methane emitted to air. This study was conducted at four landfill sites in southwest England. Measurement of CH4 using a mobile vehicle mounted instrument at the four sites was coupled with Flexfoil bag sampling of ambient air for high-precision isotope analysis. Gas well collection systems were sampled to estimate landfill oxidised proportion. Closed or active status, seasonal variation, cap stripping and site closure impact on landfill isotopic signature were also assessed. delta13CCH4 values ranged from -60 to -54‰, with an average value of -57 ± 2‰. Methane emissions from active cells are more depleted in 13C than closed sites. Methane oxidation, estimated from the isotope fractionation, ranged from 2.6 to 38.2%, with mean values of 9.5% for active and 16.2% for closed landfills, indicating that oxidised proportion is highly site specific.

AB - Biological oxidation of methane in landfill cover material can be calculated from the carbon isotopic signature (delta13CCH4) of emitted CH4. Enhanced microbial consumption of methane in the aerobic portion of the landfill cover is indicated by a shift to heavier (less depleted) isotopic values in the residual methane emitted to air. This study was conducted at four landfill sites in southwest England. Measurement of CH4 using a mobile vehicle mounted instrument at the four sites was coupled with Flexfoil bag sampling of ambient air for high-precision isotope analysis. Gas well collection systems were sampled to estimate landfill oxidised proportion. Closed or active status, seasonal variation, cap stripping and site closure impact on landfill isotopic signature were also assessed. delta13CCH4 values ranged from -60 to -54‰, with an average value of -57 ± 2‰. Methane emissions from active cells are more depleted in 13C than closed sites. Methane oxidation, estimated from the isotope fractionation, ranged from 2.6 to 38.2%, with mean values of 9.5% for active and 16.2% for closed landfills, indicating that oxidised proportion is highly site specific.

U2 - 10.1016/j.wasman.2021.07.012

DO - 10.1016/j.wasman.2021.07.012

M3 - Article

VL - 132

SP - 162

EP - 175

JO - Waste Management

JF - Waste Management

SN - 0956-053X

ER -