Separation of water from liquid by-products of the agricultural digestate HTC

Agnieszka Urbanowska, Christian Israel Aragon Briceño, Mateusz Wnukowski, Małgorzata Kabsch-Korbutowicz, Artur Krzysztof Pozarlik, Marcin Baranowski, Lukasz Karol Niedzwiecki, Przemyslaw Seruga, Halina Pawlak-Kruczek, Eduard A. Bramer, Gerrit Brem

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

The constantly growing water deficit in agriculture contributes to the fact that digestate, which is a byproduct of biogas production, begins to be treated not only as an alternative fertilizer but as a potential source of water. Digestate is a rich source of nutrients and water. However, European Nitrates Directive
(91/676/EEC) could become a significant obstacle for direct application of the digestate by means of land-spreading, due to high availability of the nutrients in the digestate. Storage is also difficult, as stateof- the-art biogas plant has a substantial land requirement for the storage of digestate. The use of hydrothermal carbonization process (HTC) can enhance the mechanical dewatering of digestate and make it less energy intensive. On top of that, liquid by-products of hydrothermal carbonization can be used to enhance the biogas production, due to their relatively high content of organic compounds while recovered water may be used in agriculture. This paper presents the results of the use of various polymer
membranes for purification of water from the HTC effluent, after hydrothermal carbonization of an agricultural digestate.
Original languageEnglish
Title of host publicationProceedings of the 6th International Conference Contemporary Problems of Thermal Engineering . CPOTE 2020
ISBN (Electronic)978-83-61506-54-6
Publication statusPublished - 21 Sep 2020
Event6th International Conference on Contemporary Problems of Thermal Engineering, CPOTE 2020 - Virtual Event, Poland
Duration: 21 Sep 202024 Sep 2020
Conference number: 6

Conference

Conference6th International Conference on Contemporary Problems of Thermal Engineering, CPOTE 2020
Abbreviated titleCPOTE 2020
CountryPoland
CityVirtual Event
Period21/09/2024/09/20

Keywords

  • Hydrothermal carbonization
  • Membrane separation
  • Water recovery
  • GC-MS analysis

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