Water extraction of pyrolysis oil: the first step for the recovery of renewable chemicals

C.R. Vitasari, G.W. Meindersma, A.B. Haan, de

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Abstract

The interest in biomass as a source of renewable energy and chemicals has been increasing in keeping up with the transition to a sustainable bio-based economy. An important initial step of chemicals recovery from biomass-derived pyrolysis oil is water extraction where most of polar compounds are isolated in the aqueous phase. This study was done to investigate the effects of stirring rate and water-to-oil ratio on the extraction capability (distribution coefficient and yield), water content, and atomic composition of both aqueous and organic phases. The results show that the stirring rate above 300 rpm has no influence on the equilibrium. Increasing the water-to-oil ratio dilutes the aqueous phase without changing the atomic distribution. Forest residue-derived pyrolysis oil should be extracted at a water-to-oil ratio of 0.65–0.7, whereas pine-derived pyrolysis oil is preferably extracted at the lowest feasible water-to-oil ratio where complete phase separation occurs, which is 0.5 in this study.
Original languageEnglish
Pages (from-to)7204-7210
JournalBioresource Technology
Volume102
Issue number14
DOIs
Publication statusPublished - 2011

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pyrolysis
Oils
Pyrolysis
Recovery
Water
oil
Biomass
water
biomass
chemical
water extraction
Phase separation
Water content
water content
Chemical analysis
energy

Cite this

Vitasari, C.R. ; Meindersma, G.W. ; Haan, de, A.B. / Water extraction of pyrolysis oil: the first step for the recovery of renewable chemicals. In: Bioresource Technology. 2011 ; Vol. 102, No. 14. pp. 7204-7210.
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Water extraction of pyrolysis oil: the first step for the recovery of renewable chemicals. / Vitasari, C.R.; Meindersma, G.W.; Haan, de, A.B.

In: Bioresource Technology, Vol. 102, No. 14, 2011, p. 7204-7210.

Research output: Contribution to journalArticleAcademicpeer-review

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AB - The interest in biomass as a source of renewable energy and chemicals has been increasing in keeping up with the transition to a sustainable bio-based economy. An important initial step of chemicals recovery from biomass-derived pyrolysis oil is water extraction where most of polar compounds are isolated in the aqueous phase. This study was done to investigate the effects of stirring rate and water-to-oil ratio on the extraction capability (distribution coefficient and yield), water content, and atomic composition of both aqueous and organic phases. The results show that the stirring rate above 300 rpm has no influence on the equilibrium. Increasing the water-to-oil ratio dilutes the aqueous phase without changing the atomic distribution. Forest residue-derived pyrolysis oil should be extracted at a water-to-oil ratio of 0.65–0.7, whereas pine-derived pyrolysis oil is preferably extracted at the lowest feasible water-to-oil ratio where complete phase separation occurs, which is 0.5 in this study.

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