Journal article Open Access

Assessment of the effects of process water recirculation on the surface chemistry and morphology of hydrochar

Pablo J. Arauzo; Maciej P. Olszewski; Xia Wang; Jens Pfersich; Victor Sebastian; Joan Manyà; Niklas Hedin; Andrea Kruse

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      <creatorName>Pablo J. Arauzo</creatorName>
      <affiliation>University of Hohenheim</affiliation>
      <creatorName>Maciej P. Olszewski</creatorName>
      <affiliation>University of Hohenheim</affiliation>
      <creatorName>Xia Wang</creatorName>
      <affiliation>University of Stockholm</affiliation>
      <creatorName>Jens Pfersich</creatorName>
      <affiliation>University of Hohenheim</affiliation>
      <creatorName>Victor Sebastian</creatorName>
      <affiliation>University of Zaragoza</affiliation>
      <creatorName>Joan Manyà</creatorName>
      <affiliation>University of Zaragoza</affiliation>
      <creatorName>Niklas Hedin</creatorName>
      <affiliation>University of Stockholm</affiliation>
      <creatorName>Andrea Kruse</creatorName>
      <affiliation>University of Hohenheim</affiliation>
    <title>Assessment of the effects of process water recirculation on the surface chemistry and morphology of hydrochar</title>
    <subject>Hydrothermal carbonization</subject>
    <subject>Aqueous phase</subject>
    <subject>Brewer's spent grains</subject>
    <date dateType="Issued">2020-04-16</date>
  <resourceType resourceTypeGeneral="JournalArticle"/>
    <alternateIdentifier alternateIdentifierType="url"></alternateIdentifier>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsIdenticalTo">10.1016/j.renene.2020.04.050</relatedIdentifier>
    <rights rightsURI="">Creative Commons Attribution 4.0 International</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
    <description descriptionType="Abstract">&lt;p&gt;The effect of two process water (PW) recirculation strategies after the hydrothermal carbonization (HTC) of brewers spent grains (BSG) is evaluated with the focus on the hydrochar characteristics. The HTC process has been carried out under different operating conditions; residence time between 2 - 4 h and temperature in the range of 200 - 220 &amp;deg;C. The hydrochars composition reveals that operating conditions have a more significant effect than PW recirculation on the hydrochar composition. The composition of the liquid produced at HTC plus PW recirculation process is essentially controlled by the operating temperature, for instance, the total organic carbon (TOC) in the PW changes in the narrow range of 200 - 220 &amp;deg;C. A detailed analysis of PW has also been done. The main components of the liquid phase are lactic, formic, acetic, levulinic, and propionic acid and 5-hydroxymethylfurfural, that affect the surface structure of the hydrochars.&lt;/p&gt;</description>
      <funderName>European Commission</funderName>
      <funderIdentifier funderIdentifierType="Crossref Funder ID">10.13039/100011102</funderIdentifier>
      <awardNumber awardURI="info:eu-repo/grantAgreement/EC/FP7/319454/">319454</awardNumber>
      <awardTitle>"Marie Curie Actions in Horizon 2020: regional and international impact"</awardTitle>
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