Subcritical water--a perspective reaction media for biomass processing to chemicals: study on cellulose conversion as a model for biomass

Biomass and water are recognized as a key renewable feedstock in sustainable production of chemicals, fuels and energy. Subcritical water (SubCW), or commonly referred as hot compressed water (HCW), is the water above boiling and below critical point (CP; 374°C, 22.1 MPa). It has gained great attent...

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Bibliographic Details
Published inChemical and biochemical engineering quarterly Vol. 27; no. 1; p. 73
Main Authors Pavlovic, I, Knez, Z, Skerget, M
Format Journal Article
LanguageEnglish
Published Croatian Association of Chemical Engineers 2013
Subjects
Biomass
Cellulose
Chemical properties
Chemical reactions
Chemical research
Identification and classification
Water chemistry
Slovenia
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Summary:Biomass and water are recognized as a key renewable feedstock in sustainable production of chemicals, fuels and energy. Subcritical water (SubCW), or commonly referred as hot compressed water (HCW), is the water above boiling and below critical point (CP; 374°C, 22.1 MPa). It has gained great attention in the last few decades as a green, cheap, and nontoxic reagent for conversion of biomass into valuable chemicals. In this paper, hydrothermal reactions of cellulose, as the model biomass substance, with subcritical water at mild temperature and pressure regimes have been studied. The experiments were done in a batch reactor in the temperature range of 220°-300 °C. The main products distributed in liquid, gaseous and solid phase were separated and quantified. The conversions to each group of products were found strongly dependent on the temperature and residence time. Key words: Biomass, cellulose, subcritical water (SubCW), hydrothermal conversion, bio-oils
ISSN:0352-9568