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The water demand of ammonia production to fertilize crops
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Abstract
Renewable ammonia production enabled by water electrolysis to supply hydrogen, combined with the Haber-Bosch process to form ammonia might be advantageous at the local (several metric ton per day) scale to de-risk fertilizer supplies for agriculture through local or regional control over fertilizer production and price. Concerns regarding the water demand of this vs. the water demand to raise the crops to be fertilized are unfounded since the water demand to produce ammonia for fertilizing a given crop is fractions of a percent of the water demand for the crop itself. About 3.2 kg of water is needed to produce 1 kg of renewable ammonia, amounting to 0.015% of the water demand of, for example, irrigated corn.
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Date
2025-06-10
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Research Projects
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Keywords
Ammonia, Water, Crop production