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Fate of Plant Available Nutrients during Hydrothermal Carbonization of Digestate
Author(s) -
Funke Axel
Publication year - 2015
Publication title -
chemie ingenieur technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.365
H-Index - 36
eISSN - 1522-2640
pISSN - 0009-286X
DOI - 10.1002/cite.201400182
Subject(s) - hydrothermal carbonization , digestate , chemistry , phosphorus , nutrient , nitrate , carbonization , hydrothermal circulation , nitrogen , potassium , environmental chemistry , pulp and paper industry , chemical engineering , anaerobic digestion , organic chemistry , methane , engineering , adsorption
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 NH 4 + and PO 4 3− 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.