Monolingual examples (not verified by PONS Editors)

English
Another benefit of using low amounts of natural gas is the possibility of replacing it with landfill gas, ethanol, or renewable fuels.
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As part of an integrated waste management system, anaerobic digestion reduces the emission of landfill gas into the atmosphere.
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Many landfills also have landfill gas extraction systems installed to extract the landfill gas.
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Recent data on the rule's impact indicate that increasing its stringency has significantly increased the number of landfills that must collect and combust their landfill gas.
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Biogas, and especially landfill gas, are already used in some areas, but their use could be greatly expanded.
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Landfill gas also contains varying amounts of nitrogen and oxygen gas, water vapour, hydrogen sulphide, and other contaminants.
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