This website uses cookies to ensure you get the best experience. Learn more

methane

methane

methane Sentence Examples

  • In methane, CH 4, the hydrogen atoms are of equal value, and hence only one alcohol, viz.

    18
    6
  • methane, tetrachlormethane, &c., to yield aromatic compounds when subjected to a high temperature, the so-called pyrogenetic reactions (from Greek 7rup, fire, and - yon, fco, I produce); the predominance of benzenoid, and related compounds-naphthalene, anthracene, phenanthrene, &c.-in coal-tar is probably to be associated with similar pyrocondensations.

    9
    6
  • Prior to 1830, little was known of the process other than that organic compounds generally yielded tarry and solid matters, but the discoveries of Liebig and Dumas (of acetone from acetates), of Mitscherlich (of benzene from benzoates) and of Persoz (of methane from acetates and lime) brought the operation into common laboratory practice.

    6
    4
  • The above equation may consequently be written, if x is the heat of formation of methane, -x+0 = -94300-(2 X 68300) +213800 x =17000 cal.

    5
    6
  • The equivalence of the four hydrogen atoms of methane rested on indirect evidence, e.g.

    5
    6
  • that of the alcohols, which only differ from the hydrocarbons by having a group OH, called hydroxyl, instead of H, hydrogen; these compounds, when derived from the above methane series of hydrocarbons, are expressed by the general formula C7,H27,+10H.

    4
    1
  • Methane and its homologues give origin to the " paraffin " or " fatty series " of the general formula C,H 2, ,+ 1 000H, ethylene gives origin to the acrylic acid series, C n H 27, - 1 000H, and so on.

    4
    2
  • The quinonoid structure of many coloured compounds has been proved experimentally, as, for example, by Hewitt for the benzene-azo-phenols, and Hantzsch for triaminotriphenyl methane and acridine derivatives; but, at the same time, many substances cannot be so explained.

    4
    3
  • von Liebig (Ann., 1908, 360, p. 128), from a very complete discussion of triphenyl methane derivatives, concluded that the group i ng A A A was the only true organic chromophore, colour production, however, requiring another condition, usually the closing of a ring.

    4
    3
  • Considering the predicted series of compounds C7,H2,,+2, which is the well-known homologous series of methane, the first member, the possible of isomerism lies in that of a different linking of the carbon atoms. This first presents itself when four are present, i.e.

    4
    4
  • In methane and ethane the hydrogen atoms are of equal value, and no matter which one may be substituted by another element or group the same compound will result.

    4
    5
  • The identity of the four valencies of the carbon atom follows from the fact that the heats of combustion of methane, ethane, propane, trimethyl methane, and tetramethyl methane, have a constant difference in the order given, viz.

    4
    5
  • Discovered by Boyle in 1661, it was first carefully studied by Dumas and Peligot in 1831; its synthesis from its elements (through methane and methyl chloride) was effected by Berthelot in 1858.

    4
    5
  • Molten copper absorbs carbon monoxide, hydrogen and sulphur dioxide; it also appears to decompose hydrocarbons (methane, ethane), absorbing the hydrogen and the carbon separating out.

    3
    3
  • Methyl chloride CH 3 C1, is a gas, boiling at - 23°, obtained by chlorinating methane, or better, from methyl alcohol; wood spirit is treated with salt and sulphuric acid, or hydrochloric acid gas conducted into the boiling spirit in the presence of zinc chloride, the evolved gas being washed with potash and dried by sulphuric acid.

    3
    4
  • This conception has rendered possible a clear idea of the linking or internal structure of the molecule, for example, in the most simple case, methane, CH 4, is expressed by H H-C-H H It is by this conception that possible and impossible compounds are at once fixed.

    3
    4
  • When calcium sulphate is present, the nascent methane induces the formation of calcium carbonate, sulphuretted hydrogen and water.

    3
    4
  • By subtracting the value for CH 2, which may be derived from two substances belonging to the same homologous series, from the molecular refraction of methane, CH 4, the value of hydrogen is obtained; subtracting this from CH 2, the value of carbon is determined.

    3
    5
  • A further generalization was effected by August Kekule, who rejected the hydrochloric acid type as unnecessary, and introduced the methane type and condensed mixed types.

    3
    7
  • Its tetramethyl-diamino derivative, which is formed by condensing formaldehyde with dimethyl-meta-aminophenol and subsequent elimination of water from the resulting diphenyl methane derivative, is the leuco base of pyronine, into which it passes by oxidation.

    3
    8
  • Similarly nascent methane may reduce iron salts, and the black mud in which these bacteria often occur owes its colour to the FeS formed.

    2
    1
  • FLUORENE (a-diphenylene methane), C 13 H 10 or (C6H4)2CH2, a hydrocarbon found in coal-tar.

    2
    2
  • a little hydrochloric acid, methylene diresorcin [(HO) 2 C 6 H 3] 2 CH 2, whilst with chloral hydrate, in the presence of potassium bisulphate, it yields the lactone of tetra-oxydiphenyl methane carboxylic acid (J.

    2
    2
  • The chief unsaturated hydrocarbons present in coal gas are: ethylene, C2H4, butylene, C 4 H 8, acetylene, C 2 H 2, benzene, C 6 H 61 and naphthalene,C 10 H 8, and the saturated hydrocarbons consist chieflyof methane, CH 4, and ethane, C2H6.

    2
    3
  • Thisas, which is made for 10 or I I minutes, contains from 23 to 32% carbon monoxide, 7 to I 5% carbon dioxide, 2 to 3% hydrogen, a little methane, 64 to 66% nitrogen, and has a heating value of 950 calories per cub.

    2
    3
  • It is decomposed by water with the formation of acetylene, methane, ethylene, &c. Lanthanum carbonate, La 2 CO 3 8H 2 O, occurs as the rare mineral lanthanite, forming greyish-white, pink or yellowish rhombic prisms. The atomic weight of lanthanum has been determined by B.

    2
    5
  • Ethane, when heated to this degree, splits up into ethylene and hydrogen, whilst ethylene decomposes to methane and acetylene, and the acetylene at once polymerizes to benzene, styrolene, retene, &c. A portion also condenses, and at the same time loses some hydrogen, becoming naphthalene; and the compounds so formed by interactions amongst themselves build up the remainder of the hydrocarbons present in the coal tar, whilst the organic substances containing oxygen in the coal break down, and cause the formation of the phenols in the tar.

    1
    2
  • There is very little doubt that the general course of the decompositions follows these iines; but any such simple explanation of the actions taking place is rendered impossible by the fact that, instead of the breaking-down of the hydrocarbons being completed in the coal, and only secondary reactions taking place in the retort, in practice the hydrocarbons to a great extent leave the coal as the vapours of condensible hydrocarbons, and the breaking down of these to such simple gaseous compounds as ethylene is proceeding in the retort at the same time as the breaking up of the ethylene already formed into acetylene and methane, and the polymerization of the former into higher compounds.

    1
    2
  • Moreover, these secondary products cannot be successfully reduced, by further heating, to simpler hydrocarbons of any high illuminating value, and such bodies as naphthalene and anthracene have so great a stability that, when once formed, they resist any efforts again to decompose them by heat, short of the temperature which breaks them up into methane, carbon and hydrogen.

    1
    2
  • Ethane, when heated to this degree, splits up into ethylene and hydrogen, whilst ethylene decomposes to methane and acetylene, and the acetylene at once polymerizes to benzene, styrolene, retene, &c. A portion also condenses, and at the same time loses some hydrogen, becoming naphthalene; and the compounds so formed by interactions amongst themselves build up the remainder of the hydrocarbons present in the coal tar, whilst the organic substances containing oxygen in the coal break down, and cause the formation of the phenols in the tar.

    1
    2
  • The water-gas shows 4 to 5% carbon dioxide, 40% carbon monoxide, o 8% methane, 48 to 51% hydrogen, 4 or 5% nitrogen.

    1
    3
  • It may be prepared by distilling diphenylene ketone over zinc dust, or by heating it with hydriodic acid and phosphorus to 150-160° C.; and also by passing the vapour of diphenyl methane through a red hot tube.

    1
    5
  • The hydrocarbon methane, CH 4, when completely burned to carbon dioxide and water, generates 213800 cal.

    0
    0
  • A mixture of carbon bisulphide vapour and sulphuretted hydrogen, when passed over heated copper, gives, amongst other products, some methane.

    0
    0
  • Gomberg's triphenyl-methyl play no part in what follows), it is readily seen that the simplest hydrocarbon has the formula CH 4, named methane, in which the hydrogen atoms are of equal value, and which may be pictured as placed at the vertices of a tetrahedron, the carbon atom occupying the centre.

    0
    0
  • This compound may be considered as derived from methane, CH 4, by replacing a hydrogen atom by the monovalent group CH 3, known as methyl; hence ethane may be named " methylmethane."

    0
    0
  • The gaseous mixture obtained by burning guncotton in a vacuum vessel contains steam, carbon monoxide, carbon dioxide, nitrogen, nitric oxide, and methane.

    0
    0
  • Methane.

    0
    0
  • Like aluminium carbide it is slowly decomposed by water with the production of methane.

    0
    0
  • Landfills are expensive to operate and require aftercare for many years following closure, in order to monitor leachate and gases such as methane.

    0
    0
  • Biological production of methane up to now was considered only to occur under strictly anaerobic conditions.

    0
    0
  • anthropogenic methane emissions plays a pivotal role in the UK Government meeting its Kyoto targets.

    0
    0
  • The reaction is a substitution reaction; a hydrogen atom of methane is swapped for a chlorine atom.

    0
    0
  • belch out vast quantities of methane, which accelerates warming.

    0
    0
  • Engines fuelled by methane biogas or gases from old coal mines normally cease to function if the methane concentration drops below 40 per cent.

    0
    0
  • Seventy-two soldiers of the East India Company die as a result of methane poisoning and third-degree ammonia burns.

    0
    0
  • Grow the plants, cut them down, anaerobically digest them to produce methane and good quality compost.

    0
    0
  • Such engines are sometimes run partly on the gas (mostly methane) from the sludge digestion tanks.

    0
    0
  • Variations in atmospheric methane concentration during the Holocene epoch.

    0
    0
  • When sunlight strikes methane molecules they react to form ethane molecules they react to form ethane.

    0
    0
  • It is believed Titan could be home to oceans and streams of liquid ethane and methane.

    0
    0
  • Last July, more than 30 were killed in a methane explosion in Donetsk region, the heart of Ukraine's coal-producing area.

    0
    0
  • fermented in a round sunken cement tank, the dung gives off methane.

    0
    0
  • Methane emissions are estimated for biomass burning, enteric fermentation and irrigated agriculture.

    0
    0
  • A paper describing an experimental and modeling study of low pressure sulfur and nitrogen doped premixed methane flames has been published.

    0
    0
  • Test drilling in the area revealed evidence of an abundance of methane hydrate just waiting to burst free of its watery confines.

    0
    0
  • The release of methane into the atmosphere explains the sudden shift in carbon isotopes.

    0
    0
  • What about reports recently that trees emit methane which is more damaging to the environment than CO 2?

    0
    0
  • methane produced by sheep.

    0
    0
  • methane generated; EPA guidance.

    0
    0
  • methane captured from landfill sites.

    0
    0
  • If sunlight is continuously destroying methane on Titan, how is methane getting into the atmosphere?

    0
    0
  • Of these, all except one were targeted at coalbed methane or mines gas, illustrating the continued interest in these gas resources.

    0
    0
  • In the past two centuries the concentration of atmospheric methane has more than doubled.

    0
    0
  • These boulders are thought to slow the flow of liquid methane from the west.

    0
    0
  • methane hydrate just waiting to burst free of its watery confines.

    0
    0
  • methane monooxygenase (Buzy et al.

    0
    0
  • methane seepage has occurred over a prolonged period of time.

    0
    0
  • Molecular Ecology of Methane oxidation We have been developing molecular biology techniques to study the ecology of methane oxidation We have been developing molecular biology techniques to study the ecology of methane oxidizers.

    0
    0
  • methane emissions in the UK came from landfill in 1997.

    0
    0
  • methane gas instead of diesel to power the vehicles on a full time basis.

    0
    0
  • They were also, sensibly, keen on coal-bed methane sequestration.

    0
    0
  • Just under half the blocks awarded for license had a coal bed methane or vent gas focus.

    0
    0
  • Cattle produce a large amount of the potent greenhouse gas methane in their stomachs.

    0
    0
  • In addition, Alkane has an attractive pipeline of coal mine methane sites to exploit in the UK to provide organic growth.

    0
    0
  • methane in the atmosphere.

    0
    0
  • methane from landfill.

    0
    0
  • oxidation of this methane would have little impact on atmospheric oxygen levels.

    0
    0
  • We are also investigating anaerobic methane oxidation using conventional and molecular techniques.

    0
    0
  • Here we are trying to maintain a methane oxidation mechanism that is always up-to-date.

    0
    0
  • Produced by smoldering fires, carbon monoxide reduces concentrations of reactive atmospheric chemicals called hydroxyl radicals that remove methane from the air.

    0
    0
  • Methane, Mr Macclesfield's own super hero who can supply tuneful rectal rasps at will.

    0
    0
  • Large quantities of MDAC indicate that methane seepage has occurred over a prolonged period of time.

    0
    0
  • gas in marine sediments: implications for slope stability and benthic ecology; natural gas seepages as a source of atmospheric methane.

    0
    0
  • Anyway, landfill sites release a large amount of methane, a greenhouse gas which contributes to climate change.

    0
    0
  • substitution reaction; a hydrogen atom of methane is swapped for a chlorine atom.

    0
    0
  • The gases normally present in the gastrointestinal tract are oxygen, carbon dioxide, nitrogen, hydrogen, methane, and hydrogen sulfide.

    0
    0
  • sulfonyl methane (MSM ), a naturally occurring form of organic sulfur, may be the answer.

    0
    0
  • Titan's atmosphere contains an abundance of methane, which was detected many years ago by spacecraft that flew past the planet.

    0
    0
  • volatile hydrocarbons (excluding methane) set by ISBT at 20 ppmV.

    0
    0
  • The hydrocarbon methane, CH 4, when completely burned to carbon dioxide and water, generates 213800 cal.

    0
    0
  • The above equation may consequently be written, if x is the heat of formation of methane, -x+0 = -94300-(2 X 68300) +213800 x =17000 cal.

    0
    0
  • A mixture of carbon bisulphide vapour and sulphuretted hydrogen, when passed over heated copper, gives, amongst other products, some methane.

    0
    0
  • Its tetramethyl-diamino derivative, which is formed by condensing formaldehyde with dimethyl-meta-aminophenol and subsequent elimination of water from the resulting diphenyl methane derivative, is the leuco base of pyronine, into which it passes by oxidation.

    0
    0
  • A further generalization was effected by August Kekule, who rejected the hydrochloric acid type as unnecessary, and introduced the methane type and condensed mixed types.

    0
    0
  • Gomberg's triphenyl-methyl play no part in what follows), it is readily seen that the simplest hydrocarbon has the formula CH 4, named methane, in which the hydrogen atoms are of equal value, and which may be pictured as placed at the vertices of a tetrahedron, the carbon atom occupying the centre.

    0
    0
  • The equivalence of the four hydrogen atoms of methane rested on indirect evidence, e.g.

    0
    0
  • Chem., 1888, 2, p. 553), who prepared the four nitromethanes, CH 3 N 2 0, each atom in methane being successively replaced by the nitro-group.

    0
    0
  • This compound may be considered as derived from methane, CH 4, by replacing a hydrogen atom by the monovalent group CH 3, known as methyl; hence ethane may be named " methylmethane."

    0
    0
  • Equally well we may derive it from methane by replacing a hydrogen atom by the monovalent group CH 2 CH 31 named ethyl; hence propane may be considered as " ethylmethane."

    0
    0
  • Further, since methane may be regarded as formed b y the conjunction of a methyl group with a hydrogen atom, it may be named " methyl hydride "; similarly ethane is " ethyl hydride," propane, " propyl hydride," and so on.

    0
    0
  • In methane and ethane the hydrogen atoms are of equal value, and no matter which one may be substituted by another element or group the same compound will result.

    0
    0
  • methane, tetrachlormethane, &c., to yield aromatic compounds when subjected to a high temperature, the so-called pyrogenetic reactions (from Greek 7rup, fire, and - yon, fco, I produce); the predominance of benzenoid, and related compounds-naphthalene, anthracene, phenanthrene, &c.-in coal-tar is probably to be associated with similar pyrocondensations.

    0
    0
  • The identity of the four valencies of the carbon atom follows from the fact that the heats of combustion of methane, ethane, propane, trimethyl methane, and tetramethyl methane, have a constant difference in the order given, viz.

    0
    0
  • By subtracting the value for CH 2, which may be derived from two substances belonging to the same homologous series, from the molecular refraction of methane, CH 4, the value of hydrogen is obtained; subtracting this from CH 2, the value of carbon is determined.

    0
    0
  • The quinonoid structure of many coloured compounds has been proved experimentally, as, for example, by Hewitt for the benzene-azo-phenols, and Hantzsch for triaminotriphenyl methane and acridine derivatives; but, at the same time, many substances cannot be so explained.

    0
    0
  • von Liebig (Ann., 1908, 360, p. 128), from a very complete discussion of triphenyl methane derivatives, concluded that the group i ng A A A was the only true organic chromophore, colour production, however, requiring another condition, usually the closing of a ring.

    0
    0
  • The gaseous mixture obtained by burning guncotton in a vacuum vessel contains steam, carbon monoxide, carbon dioxide, nitrogen, nitric oxide, and methane.

    0
    0
  • Prior to 1830, little was known of the process other than that organic compounds generally yielded tarry and solid matters, but the discoveries of Liebig and Dumas (of acetone from acetates), of Mitscherlich (of benzene from benzoates) and of Persoz (of methane from acetates and lime) brought the operation into common laboratory practice.

    0
    0
  • Methane and its homologues give origin to the " paraffin " or " fatty series " of the general formula C,H 2, ,+ 1 000H, ethylene gives origin to the acrylic acid series, C n H 27, - 1 000H, and so on.

    0
    0
  • Discovered by Boyle in 1661, it was first carefully studied by Dumas and Peligot in 1831; its synthesis from its elements (through methane and methyl chloride) was effected by Berthelot in 1858.

    0
    0
  • Methyl chloride CH 3 C1, is a gas, boiling at - 23°, obtained by chlorinating methane, or better, from methyl alcohol; wood spirit is treated with salt and sulphuric acid, or hydrochloric acid gas conducted into the boiling spirit in the presence of zinc chloride, the evolved gas being washed with potash and dried by sulphuric acid.

    0
    0
  • This conception has rendered possible a clear idea of the linking or internal structure of the molecule, for example, in the most simple case, methane, CH 4, is expressed by H H-C-H H It is by this conception that possible and impossible compounds are at once fixed.

    0
    0
  • Considering the predicted series of compounds C7,H2,,+2, which is the well-known homologous series of methane, the first member, the possible of isomerism lies in that of a different linking of the carbon atoms. This first presents itself when four are present, i.e.

    0
    0
  • that of the alcohols, which only differ from the hydrocarbons by having a group OH, called hydroxyl, instead of H, hydrogen; these compounds, when derived from the above methane series of hydrocarbons, are expressed by the general formula C7,H27,+10H.

    0
    0
  • It is decomposed by water with the formation of acetylene, methane, ethylene, &c. Lanthanum carbonate, La 2 CO 3 8H 2 O, occurs as the rare mineral lanthanite, forming greyish-white, pink or yellowish rhombic prisms. The atomic weight of lanthanum has been determined by B.

    0
    0
  • Like aluminium carbide it is slowly decomposed by water with the production of methane.

    0
    0
  • Water decomposes it, giving methane and hydrogen (H.

    0
    0
  • Molten copper absorbs carbon monoxide, hydrogen and sulphur dioxide; it also appears to decompose hydrocarbons (methane, ethane), absorbing the hydrogen and the carbon separating out.

    0
    0
  • FLUORENE (a-diphenylene methane), C 13 H 10 or (C6H4)2CH2, a hydrocarbon found in coal-tar.

    0
    0
  • It may be prepared by distilling diphenylene ketone over zinc dust, or by heating it with hydriodic acid and phosphorus to 150-160° C.; and also by passing the vapour of diphenyl methane through a red hot tube.

    0
    0
  • When calcium sulphate is present, the nascent methane induces the formation of calcium carbonate, sulphuretted hydrogen and water.

    0
    0
  • Similarly nascent methane may reduce iron salts, and the black mud in which these bacteria often occur owes its colour to the FeS formed.

    0
    0
  • a little hydrochloric acid, methylene diresorcin [(HO) 2 C 6 H 3] 2 CH 2, whilst with chloral hydrate, in the presence of potassium bisulphate, it yields the lactone of tetra-oxydiphenyl methane carboxylic acid (J.

    0
    0
  • Confining ourselves to cases where titration methods are not employed, the general order is as follows: carbon dioxide, olefines, oxygen, carbon monoxide, hydrogen, methane and nitrogen (by difference).

    0
    0
  • Methane cannot be burnt in this way even when there is much hydrogen present, and several other methods have been proposed, such as mixing with air and aspirating over copper oxide heated to redness, or mixing with oxygen and burning in a platinum tube heated to redness, the carbon dioxide formed being estimated by absorption in potash.

    0
    0
  • There is very little doubt that the general course of the decompositions follows these iines; but any such simple explanation of the actions taking place is rendered impossible by the fact that, instead of the breaking-down of the hydrocarbons being completed in the coal, and only secondary reactions taking place in the retort, in practice the hydrocarbons to a great extent leave the coal as the vapours of condensible hydrocarbons, and the breaking down of these to such simple gaseous compounds as ethylene is proceeding in the retort at the same time as the breaking up of the ethylene already formed into acetylene and methane, and the polymerization of the former into higher compounds.

    0
    0
  • Starting with a solid hydrocarbon of definite composition, it would be theoretically possible to decompose it entirely into carbon, hydrogen, ethylene and methane, and, by rapidly removing these from the heating zone before any secondary actions took place, to prevent formation of tar.

    0
    0
  • Moreover, these secondary products cannot be successfully reduced, by further heating, to simpler hydrocarbons of any high illuminating value, and such bodies as naphthalene and anthracene have so great a stability that, when once formed, they resist any efforts again to decompose them by heat, short of the temperature which breaks them up into methane, carbon and hydrogen.

    0
    0
  • The chief unsaturated hydrocarbons present in coal gas are: ethylene, C2H4, butylene, C 4 H 8, acetylene, C 2 H 2, benzene, C 6 H 61 and naphthalene,C 10 H 8, and the saturated hydrocarbons consist chieflyof methane, CH 4, and ethane, C2H6.

    0
    0
  • But here again another mistaken idea arose, owing to a faulty method of estimating the benzene, and there is no doubt that methane is one of the most important of the hydrocarbons present, when the gas is burnt in such a way as to evolve from it the proper illuminating power, whilst the benzene vapour, small as the quantity is, comes next in importance and the ethylene last.

    0
    0
  • Tully and now in use at Truro, in which tar is injected into the incandescent fuel in a water-gas generator and enriches the water gas with methane and other hydrocarbons, the resulting pitch and carbon being filtered off by the column of coke through which the gas passes.

    0
    0
  • In carburetting poor coal gas with hydrocarbons from mineral oil it must be borne in mind that, as coal is undergoing distillation, a rich gas is given off in the earlier stages, but towards the end of the operation the gas is very poor in illuminants, the methane disappearing with the other hydrocarbons, and the increase in hydrogen being very marked.

    0
    0
  • Thisas, which is made for 10 or I I minutes, contains from 23 to 32% carbon monoxide, 7 to I 5% carbon dioxide, 2 to 3% hydrogen, a little methane, 64 to 66% nitrogen, and has a heating value of 950 calories per cub.

    0
    0
  • The water-gas itself is made for 7 minutes, and has an average composition of 3.3% carbon dioxide, 44% carbon monoxide, o 4% methane, 48.6% hydrogen, 3.7% nitrogen, and a heating value of 2970 calories per cub.

    0
    0
  • The water-gas shows 4 to 5% carbon dioxide, 40% carbon monoxide, o 8% methane, 48 to 51% hydrogen, 4 or 5% nitrogen.

    0
    0
  • In methane, CH 4, the hydrogen atoms are of equal value, and hence only one alcohol, viz.

    0
    0
  • Produced by smoldering fires, carbon monoxide reduces concentrations of reactive atmospheric chemicals called hydroxyl radicals that remove methane from the air.

    0
    0
  • Methane, Mr Macclesfield 's own super hero who can supply tuneful rectal rasps at will.

    0
    0
  • The main source of methane is ruminants fed on low quality, fibrous diets.

    0
    0
  • The fuel source for the flames is natural gas, largely methane, seeping through cracks in the earth.

    0
    0
  • Gas in marine sediments: implications for slope stability and benthic ecology; natural gas seepages as a source of atmospheric methane.

    0
    0
  • Anyway, landfill sites release a large amount of methane, a greenhouse gas which contributes to climate change.

    0
    0
  • The gases normally present in the gastrointestinal tract are oxygen, carbon dioxide, nitrogen, hydrogen, methane, and hydrogen sulfide.

    0
    0
  • Methyl sulfonyl methane (MSM), a naturally occurring form of organic sulfur, may be the answer.

    0
    0
  • Titan 's atmosphere contains an abundance of methane, which was detected many years ago by spacecraft that flew past the planet.

    0
    0
  • The inlet concentration is compared with the total allowable contamination for volatile hydrocarbons (excluding methane) set by ISBT at 20 ppmV.

    0
    0
  • Global warming is believed to be caused by excessive greenhouse gases in the earth's atmosphere such as carbon dioxide, methane and nitrous oxide.

    0
    0
  • Methane, Carbon Dioxide, water vapor and fluorinated gases are helpful to the Earth in natural amounts.

    0
    0
  • Trash and waste in landfills create methane gas, which adds to the greenhouse gases in the atmosphere.

    0
    0
  • Reduced Greenhouse Gas: Paper in landfills eventually breaks down, and while degrading it creates methane - a powerful greenhouse gas.

    0
    0
  • By keeping paper out of landfills through recycling, less methane is produced from rotting trash.

    0
    0
  • Methane Gas - Methane gas is being explored as a naturally renewing source of energy because it burns more cleanly than other fuel sources and may be used to replace standard oil based fuel.

    0
    0
  • In a larger environmental sense, landfills emit methane gas, which is a more dangerous greenhouse gas than carbon dioxide.

    0
    0
  • And while there are tools in place so that much of the methane can be contained, at least 25 percent still escapes into the atmosphere.

    0
    0
  • It should be noted, of course, that the 75 percent contained is actually channeled so that it generates electricity, but the methane that is released causes serious damage to human health both in the short and long terms.

    0
    0
  • The highly pressured gas is mostly made of methane.

    0
    0
  • Until recently, permafrost has locked carbon and methane beneath the surface of the planet.

    0
    0
  • Mining oil and coal allows methane, a greenhouse gas, to escape from the earth.

    0
    0
  • Manure from cattle, a primary food source worldwide, contributes to methane gas levels.

    0
    0
  • Methane is released into the atmosphere from bovine flatulence, rice paddies, and bacteria in bogs.

    0
    0
  • Every time you send plant clippings or food waste to landfills, you contribute to the production of methane.

    0
    0
  • When these organic materials decompose in the anaerobic environment of a landfill, a significant amount of methane is released into the environment.

    0
    0
  • By composting your waste, you reduce methane production and create natural material you can then use for green fertilizer.

    0
    0
  • Biomass is any organic material produced by animals and plants, such as crops, wood, manure, municipal solid waste, ethanol, methane, and biodiesel.

    0
    0
  • It is also possible to convert biomass to other forms of useable energy, such as methane, biodiesel, and ethanol.

    0
    0
  • Global warming occurs when greenhouse gases, such as carbon dioxide and methane, trap heat from the sun inside the atmosphere.

    0
    0
  • Greenhouse gases, like carbon dioxide and methane, help trap heat in the lower atmosphere, keeping the earth livable for human beings.

    0
    0
  • Methane is released into the atmosphere in a number of ways, many of which are natural.

    0
    0
  • If it continues to melt it could potentially release 55 billion tons of methane into the atmosphere.

    0
    0
  • Rice growing and cattle raising also cause methane emissions.

    0
    0
  • Jokes about cows passing gas abound but are based on truth, and rice paddies account for 20 percent of methane emissions.

    0
    0
  • Methane is produced when rice fields are flooded.

    0
    0
  • Wind power is completely renewable and does not create greenhouse gasses, methane, or other pollutants during the manufacturing process or when used.

    0
    0
  • Some scientists are trying to figure out a good way to use the methane created from cow manure and decomposition at landfills to power electrical plants.

    0
    0
  • In Pennsylvania, waste coal and methane from coal mines are defined by the state as renewable energy sources and eligible for the same tax breaks, funding, and government support as solar cells and wind turbines.

    0
    0
  • Methane is a natural gas created in several ways.

    0
    0
  • Cattle and other animals: As more cattle are raised for milk and beef more methane is naturally released into the atmosphere during their digestive process.

    0
    0
  • Arctic seabed: A type of methane is frozen in the ice crystals of the Arctic seabed.

    0
    0
  • As more ice melts the methane contained in the ice crystals is released in greater quantities.

    0
    0
  • Factory farms produce an alarming amount of methane, which traps greenhouse gasses.

    0
    0
  • The presentation was actually offered on the topic of alternative energies because Clennell was focused on methane hydrate beds that exist under the ocean as a viable alternative to traditional fuels like natural gas.

    0
    0
  • Part of Clennell's presentation included the suggestion that eruptions of these methane hydrates could actually reduce the density of ocean water enough to sink entire ships.

    0
    0
  • Mudslides at the bottom of the ocean can uncover methane hydrate beds.

    0
    0
  • Massive volumes of methane would immediately rise through the ocean and "erupt" at the surface of the water.

    0
    0
  • The methane would also rise up into the air above that area of the ocean.

    0
    0
  • The large volume of methane at the surface of the ocean would lower the density of ocean water.

    0
    0
  • Dr. Clennell proposed that the methane gas erupting into the atmosphere could ignite from the internal combustion airplane engines and explode, destroying the plane in the process.

    0
    0
  • It is ruled by strong-woman Auntie Entity, played by the wonderful Tina Turner, and is powered by a methane plant that makes power from pigshit.

    0
    0
  • Confining ourselves to cases where titration methods are not employed, the general order is as follows: carbon dioxide, olefines, oxygen, carbon monoxide, hydrogen, methane and nitrogen (by difference).

    0
    2
  • Starting with a solid hydrocarbon of definite composition, it would be theoretically possible to decompose it entirely into carbon, hydrogen, ethylene and methane, and, by rapidly removing these from the heating zone before any secondary actions took place, to prevent formation of tar.

    0
    2
  • But here again another mistaken idea arose, owing to a faulty method of estimating the benzene, and there is no doubt that methane is one of the most important of the hydrocarbons present, when the gas is burnt in such a way as to evolve from it the proper illuminating power, whilst the benzene vapour, small as the quantity is, comes next in importance and the ethylene last.

    0
    2
  • In carburetting poor coal gas with hydrocarbons from mineral oil it must be borne in mind that, as coal is undergoing distillation, a rich gas is given off in the earlier stages, but towards the end of the operation the gas is very poor in illuminants, the methane disappearing with the other hydrocarbons, and the increase in hydrogen being very marked.

    0
    2
  • Methane cannot be burnt in this way even when there is much hydrogen present, and several other methods have been proposed, such as mixing with air and aspirating over copper oxide heated to redness, or mixing with oxygen and burning in a platinum tube heated to redness, the carbon dioxide formed being estimated by absorption in potash.

    0
    3
  • The water-gas itself is made for 7 minutes, and has an average composition of 3.3% carbon dioxide, 44% carbon monoxide, o 4% methane, 48.6% hydrogen, 3.7% nitrogen, and a heating value of 2970 calories per cub.

    0
    3
Browse other sentences examples →