| Autor: |
G.W. Meindersma, C.R. Vitasari, A.B. de Haan |
| Jazyk: |
angličtina |
| Rok vydání: |
2012 |
| Předmět: |
|
| Zdroj: |
Separation and Purification Technology, 95, 39-43. Elsevier |
| ISSN: |
1383-5866 |
| DOI: |
10.1016/j.seppur.2012.04.016 |
| Popis: |
Glycolaldehyde and acetic acid are promising bio-based platform chemicals, which could be extracted from a wood-based pyrolysis oil-derived aqueous phase. The aim of this paper was to study the effect of the aqueous feed composition and tri-n-octylamine/2-ethyl-1-hexanol concentration on the acetic acid extraction and glycolaldehyde co-extraction performance. In the physical and reactive extractions, glycolaldehyde and acetic acid are extracted independently from each other. In the physical extraction, the feed composition has a slight influence on the distribution coefficients and yields of both acetic acid extraction and glycolaldehyde co-extraction. In the reactive extraction, the acetic acid extraction and glycolaldehyde co-extraction are relatively independent of the feed composition. For a combined one-step acetic acid and glycolaldehyde extraction pure 2-ethyl-1-hexanol solvent provides the highest yields. Although 40 wt.% tri-n-octylamine provides the best acetic acid extraction performance, a solvent containing more than 50 wt.% tri-n-octylamine in 2-ethyl-1-hexanol is preferred for a two-step scenario in which acetic acid is extracted prior to glycolaldehyde, due to the decrease of glycolaldehyde co-extraction with increasing tri-n-octylamine concentration. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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Full Text from ScienceDirect