Journal
CHEMIE INGENIEUR TECHNIK
Volume 87, Issue 12, Pages 1713-1719Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cite.201400182
Keywords
Ammonium; Digestate; Hydrothermal carbonization; Nitrate; Phosphate; Potassium
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Funding
- German Federal Ministry of Research and Education
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Products from the hydrothermal carbonization of two digestates have been analyzed in order to investigate the fate of nitrogen, phosphorus, and potassium in specific plant available speciations. The availability of phosphate and potassium ions was significantly increased due to hydrothermal carbonization of a nutrient-rich digestate. In contrast, the availability of NH4+ and PO43- in the process liquor was decreased to <10% of the original value in the case of a nutrient-poor digestate. With the exception of nitrate, process parameters did not show an influence on the recovery of the investigated ions with the HTC process liquor.
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