An assessment of mine methane mitigation and utilisation technologies

Su, Shi; Beath, Andrew; Guo, Hua; Mallett, Cliff

doi:10.1016/j.pecs.2004.11.001

Cited by 252 publications

(211 citation statements)

References 7 publications

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“…The 10 ILs screened in Figures 1 and 2 (filled symbols) include cationic classes imidazolium, ammonium, phosphonium and pyridinium, and anions BF 4 , PF 6 and Tf 2 N (refs 15,20). We find that the highest CH 4 solubility in these classes of ILs occurs in the [ammonium][Tf 2 N] systems with a Henry's constant of 0.005 mol kg À 1 bar À 1 or less, that is, almost an order of magnitude smaller than that in pentane.…”

Section: Resultsmentioning

confidence: 99%

“…Purification of some medium and higher-purity natural gases is currently practiced industrially by sorption of the non-methane components (CO 2 and H 2 S). The practice becomes uneconomic or impractical below about 40% methane 6 . For methane concentrations o40%, or for separation of methane from air rather than acid gases, we would like a sorbent for methane itself.…”

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confidence: 99%

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New materials for methane capture from dilute and medium-concentration sources

et al. 2013

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Methane (CH 4 ) is an important greenhouse gas, second only to CO 2 , and is emitted into the atmosphere at different concentrations from a variety of sources. However, unlike CO 2 , which has a quadrupole moment and can be captured both physically and chemically in a variety of solvents and porous solids, methane is completely non-polar and interacts very weakly with most materials. Thus, methane capture poses a challenge that can only be addressed through extensive material screening and ingenious molecular-level designs. Here we report systematic in silico studies on the methane capture effectiveness of two different materials systems, that is, liquid solvents (including ionic liquids) and nanoporous zeolites. Although none of the liquid solvents appears effective as methane sorbents, systematic screening of over 87,000 zeolite structures led to the discovery of a handful of candidates that have sufficient methane sorption capacity as well as appropriate CH 4 /CO 2 and/or CH 4 /N 2 selectivity to be technologically promising.

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Section: Resultsmentioning

confidence: 99%

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confidence: 99%

New materials for methane capture from dilute and medium-concentration sources

et al. 2013

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“…Coal mine methane is not only a greenhouse gas but also a wasted energy resource if not utilized correctly [1][2][3][4]. It is well known that methane is the second largest contributor to global warming after carbon dioxide, and it has a global warming potential 21 times that of carbon dioxide [5].…”

Section: Introductionmentioning

confidence: 99%

“…Accordingly, most work has focused on the oxidation of very low concentration methane. These processes may be classified into thermal oxidation and catalytic oxidation in terms of the combustion kinetic mechanisms [1]. As compared with thermal oxidation, catalytic oxidation is advantageous because it can minimize the formation of NO X [6].…”

Section: Introductionmentioning

confidence: 99%

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Enhanced hydrothermal stability of high performance lean fuel combustion alumina-supported palladium catalyst modified by nickel

Liu

Wang

Sun

et al. 2012

Applied Catalysis B: Environmental

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The Combustion of Low Heating Value Gaseous Fuel Mixtures

Karim

2010

Handbook of Combustion

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The presence of diluents such as carbon dioxide and nitrogen with methane lowers significantly the effective heating value of the fuel mixture and can bring about adverse changes to the combustion characteristics of the methane. It may undermine its effective utilization altogether depending on the composition and the type of device used and the associated operating conditions. Such fuel mixtures are often encountered with varying composition in numerous natural, industrial and biogases and represent a potential energy source that needs to be exploited effectively. This section will discuss primarily how the presence of such diluent gases with methane modifies significantly the thermodynamic, kinetic and combustion characteristics of the fuel in air. It is shown that the presence with methane of nitrogen is tolerated relatively much better in combustion systems than the corresponding similar presence of carbon dioxide. The bases for these trends are discussed with examples of some operational considerations.

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An assessment of mine methane mitigation and utilisation technologies

Cited by 252 publications

References 7 publications

New materials for methane capture from dilute and medium-concentration sources

New materials for methane capture from dilute and medium-concentration sources

Enhanced hydrothermal stability of high performance lean fuel combustion alumina-supported palladium catalyst modified by nickel

The Combustion of Low Heating Value Gaseous Fuel Mixtures

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