KIT | KIT-Bibliothek | Impressum | Datenschutz

Viscosity Reduction of Fast Pyrolysis Bio-Oil by Using CO2 as an Additive

Baehr, Clarissa 1; Meyer Muñoz, Tomás 1; Raffelt, Klaus 1; Dahmen, Nicolaus 1
1 Institut für Katalyseforschung und -technologie (IKFT), Karlsruher Institut für Technologie (KIT)

Abstract:

The addition of solvents is an option for reducing the viscosity of fast pyrolysis bio-oil and for slowing down the reaction rate of aging reactions. For this purpose, conventional organic solvents with low molecular mass are deployed, with alcohols in particular. They can determine the costs and overall ecological performance of the final product. In this context, the use of CO2, which is a side product of pyrolysis, that occurs in the noncondensable pyrolysis gas, can be a favorable option. However, CO2 has not been used for conditioning of fast pyrolysis bio-oil so far. This work is an evaluation of the influence that pressurized CO2 as an agent has on the viscosity of fast pyrolysis bio-oil. The utilization of CO2 can be an asset in the context of further processing steps such as atomization, filtration, or transfer by pumping. The results are compared to the effect of ethanol on the viscosity. It was found that CO2 at 50 bar leads to a reduction of the original viscosity by 70–80%, as does 5 wt % ethanol in fast pyrolysis bio-oil. In the case of CO2 usage, there is an approximately linear relationship between the relative viscosity and CO2 pressure. ... mehr

Zugehörige Institution(en) am KIT Institut für Katalyseforschung und -technologie (IKFT)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2024
Sprache Englisch
Identifikator ISSN: 0887-0624, 1520-5029
KITopen-ID: 1000169651
HGF-Programm 38.05.01 (POF IV, LK 01) Anthropogenic Carbon Cycle
Erschienen in Energy & Fuels
Verlag American Chemical Society (ACS)
Band 38
Heft 7
Seiten 6012–6019
Vorab online veröffentlicht am 18.03.2024
Schlagwörter Activation energy, Ethanol, Pyrolysis, Redox reactions, Viscosity
Nachgewiesen in Web of Science
OpenAlex
Dimensions
Scopus
Globale Ziele für nachhaltige Entwicklung Ziel 7 – Bezahlbare und saubere Energie

Verlagsausgabe §
DOI: 10.5445/IR/1000169651
Veröffentlicht am 28.03.2024
Originalveröffentlichung
DOI: 10.1021/acs.energyfuels.3c04201
Scopus
Zitationen: 1
Web of Science
Zitationen: 1
Dimensions
Zitationen: 2
Seitenaufrufe: 75
seit 28.03.2024
Downloads: 56
seit 28.03.2024
Cover der Publikation
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft
KITopen Landing Page