With increasing reaction temperatures, the content of NH 4 -N in hydrochars showed a slightly increasing trend, while that of NO 3 -N changed little, consistent with the research results reported by Kruse et al.
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Speciation of Main Nutrients (N/P/K) in Hydrochars Produced from the Hydrothermal Carbonization of Swine Manure under Different Reaction Temperatures.
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The sentences
With the increase in reaction temperature, the content of Alkali-ON in hydrochars overall showed a decreasing trend.