| Naslov: | Observations of the release of non-methane hydrocarbons from fractured shale |
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| Avtorji: | ID Sommariva, Roberto, Department of Chemistry, University of Leicester, Leicester LE1 7RH, United Kingdom (Avtor)
ID Blake, Robert S, Department of Chemistry, University of Leicester, Leicester LE1 7RH, United Kingdom (Avtor)
ID Cuss, Robert J, Department of Chemistry, University of Leicester, Leicester LE1 7RH, United Kingdom (Avtor)
ID Cordell, Rebecca L, Department of Chemistry, University of Leicester, Leicester LE1 7RH, United Kingdom (Avtor)
ID Harrington, Jon F, British Geological Survey (BGS), Nottingham NG12 5GG, United Kingdom (Avtor)
ID White, Iain R., Department of Chemistry, University of Leicester, Leicester LE1 7RH, United Kingdom (Avtor)
ID Monks, Paul S, Department of Chemistry, University of Leicester, Leicester LE1 7RH, United Kingdom (Avtor) |
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| Datoteke: |
Gradivo nima datotek, ki so prostodostopne za javnost. Gradivo je morda fizično dosegljivo v knjižnici fakultete, zalogo lahko preverite v COBISS-u.  |
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| Jezik: | Angleški jezik |
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| Vrsta gradiva: | Delo ni kategorizirano |
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| Tipologija: | 1.01 - Izvirni znanstveni članek |
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| Organizacija: | UNG - Univerza v Novi Gorici
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| Opis: | The organic content of shale has become of commercial interest as a source of hydrocarbons, owing to the development of hydraulic fracturing ("fracking"). While the main focus is on the extraction of methane, shale also contains significant amounts of non-methane hydrocarbons (NMHCs). We describe the first real-time observations of the release of NMHCs from a fractured shale. Samples from the Bowland-Hodder formation (England) were analyzed under different conditions using mass spectrometry, with the objective of understanding the dynamic process of gas release upon fracturing of the shale. A wide range of NMHCs (alkanes, cycloalkanes, aromatics, and bicyclic hydrocarbons) are released at parts per million or parts per billion level with temperature- and humidity-dependent release rates, which can be rationalized in terms of the physicochemical characteristics of different hydrocarbon classes. Our results indicate that higher energy inputs (i.e., temperatures) significantly increase the amount of NMHCs released from shale, while humidity tends to suppress it; additionally, a large fraction of the gas is released within the first hour after the shale has been fractured. These findings suggest that other hydrocarbons of commercial interest may be extracted from shale and open the possibility to optimize the "fracking" process, improving gas yields and reducing environmental impacts. |
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| Ključne besede: | Environmental impact, Hydraulic fracturing, Mass spectrometry |
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| Leto izida: | 2014 |
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| Št. strani: | 8891-8896 |
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| Številčenje: | 15, 48 |
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| PID: | 20.500.12556/RUNG-4645-c3bf5a02-cbb5-f48d-4833-0defb65fb566 |
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| COBISS.SI-ID: | 5421307 |
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| DOI: | 10.1021/es502508w |
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| NUK URN: | URN:SI:UNG:REP:HVNFRBVH |
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| Datum objave v RUNG: | 18.07.2019 |
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| Število ogledov: | 3796 |
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| Število prenosov: | 0 |
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| Metapodatki: |    |
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