Treatment of Liquid By-Products of Hydrothermal Carbonization (HTC) of Agricultural Digestate Using Membrane Separation

Agnieszka Urbanowska , Małgorzata Kabsch-Korbutowicz , Mateusz Wnukowski , Przemysław Seruga , Marcin Baranowski , Halina Pawlak-Kruczek , Monika Tkaczuk-Serafin , Krystian Krochmalny , Łukasz Niedźwiecki


Agriculture affects both the quantity and the quality of water available for other purposes, which becomes problematic, especially during increasingly frequent severe droughts. This requires tapping into the resources that are typically neglected. One such resource is a by-product of anaerobic digestion, in which moisture content typically exceeds 90%. Application of hydrothermal carbonization process (HTC) to this residue could partially remove organic and inorganic material, improve dewatering, decrease the overall solid mass, sanitize the digestate, change its properties, and eliminate problems related with emissions of odors from the installation. However, a significant gap still exists in terms of the dewatering of the hydrochars and the composition of the effluents. This work presents results of experimental investigation focused on the removal of organic compounds from the HTC effluent. Results of qualitative and quantitative analysis of liquid by-products of HTC of the agricultural digestate showed that acetic acid, 3-pyridinol, 1-hydroxyacetone, and 1,3-propanediol were the main liquid organic products of the process. Application of ultrafiltration process with the use of 10 kDa membrane for liquid HTC by-product treatment allows for the reduction of chemical oxygen demand up to 30%, biological oxygen demand up to 10%, and dissolved organic carbon up to 21%.
Author Agnieszka Urbanowska - Wrocław University of Science and Technology (PWr)
Agnieszka Urbanowska,,
, Małgorzata Kabsch-Korbutowicz - Wrocław University of Science and Technology (PWr)
Małgorzata Kabsch-Korbutowicz,,
, Mateusz Wnukowski - Wrocław University of Science and Technology (PWr)
Mateusz Wnukowski,,
, Przemysław Seruga (PE / DBE)
Przemysław Seruga,,
- Department of Bioprocess Engineering
, Marcin Baranowski - Wrocław University of Science and Technology (PWr)
Marcin Baranowski,,
, Halina Pawlak-Kruczek - Wrocław University of Science and Technology (PWr)
Halina Pawlak-Kruczek,,
, Monika Tkaczuk-Serafin - Wrocław University of Science and Technology (PWr)
Monika Tkaczuk-Serafin,,
, Krystian Krochmalny - Wrocław University of Science and Technology (PWr)
Krystian Krochmalny,,
, Łukasz Niedźwiecki - Wrocław University of Science and Technology (PWr)
Łukasz Niedźwiecki,,
Journal seriesEnergies, [ENERGIES], ISSN 1996-1073, (N/A 140 pkt)
Issue year2020
Publication size in sheets0.55
Article number262
Keywords in EnglishDigestate, Hydrothermal Carbonization, Hydrochar, HTC Liquid By-Products, Membrane Separation
ASJC Classification1700 General Computer Science
Languageen angielski
Urbanowska_Kabsch_Korbutowicz_Wnukowski_Seruga_Baranowski_Pawlak_Kruczek_Serafin_Tkaczuk_Krochmalny_Niedziwedzki_Treatment_Of_Liqiud.pdf 1,45 MB
Score (nominal)140
Score sourcejournalList
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2018 = 1.156; WoS Impact Factor: 2018 = 2.707 (2) - 2018=2.99 (5)
Citation count*
Additional fields
UwagaThe Authors would like to thank the European Commission, the National Centre for Research and Development (Poland), Nederlandse Organisatie Voor Wetenschappelijk Onderzoek (Netherlands) and Swedish Research Council Formas for funding in the frame of the collaborative international consortium (RECOWATDIG) financed under the 2018 Joint call of the WaterWorks2017 ERA-NET Cofund. This ERA-NET is an integral part of the activities developed by the Water JPI. National Centre for Research and Development agreement number WATERWORKS2017/I/RECOWATDIG/01/2019
Share Share

Get link to the record

* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.