Grey hydrogen is produced primarily from natural gas through a process called steam methane reforming (SMR). While it is a significant step towards hydrogen production, it has notable environmental impacts.
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Natural gas extraction and transportation can lead to methane leaks, a potent greenhouse gas with a much higher warming potential than CO2 over a short time frame.
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Water Consumption: The hydrogen production process requires significant amounts of water, which can strain local water resources, especially in arid regions.
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Water Pollution: The process may also lead to water contamination if not managed properly, particularly if chemicals are used in the extraction and processing stages.
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Air Pollutants: The combustion of natural gas can release pollutants such as nitrogen oxides (NOx) and volatile organic compounds (VOCs), which can degrade air quality and contribute to respiratory issues in nearby communities.
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