Glycolaldehyde co-extraction during the reactive extraction of acetic acid with tri-n-octylamine/2-ethyl-1-hexanol from a wood-based pyrolysis oil-derived aqueous phase

Conceptual process design of an integrated bio-based acetic acid, glycolaldehyde, and acetol production in a pyrolysis oil-based biorefinery

“…For extraction simulation, the distribution coefficient data for several compounds are available in the literatures Vitasari et al, 2012a). If data is unavailable, the distribution coefficient of a particular compound was estimated using the Dortmund modified UNIFAC (UNIF-DMD) property method (see Table S1 in the Supplementary Information).…”

“…A solvent-to-feed ratio of 6 is needed to extract all acetic acid and glycolaldehyde from both pyrolysis oil-derived aqueous streams. This calculation result was based on the assumption that the distribution coefficients are composition independent (Vitasari et al, 2012a). Moreover, about two-thirds of the acetol is co-extracted.…”

“…2). The combined one-step extraction was selected over the two-step extraction since it does not employ TOA (Vitasari et al, 2012a); hence, eliminates the complicated (Oasmaa et al, 2010) 15.3 (Oasmaa et al, 2010) regeneration step by a coupling of temperature and diluent swings, which requires high temperature and energy consumption (Tamada and King, 1990). This paper discusses the conceptual design of the combined one-step extraction process using 2-ethyl-1-hexanol as solvent.…”

“…In this paper, forest residue-and pine-derived pyrolysis oils were used as feedstocks. Unlike the previous conceptual design , the process simulation used more elaborate experimental data Vitasari et al, 2012a). The process design aimed to recover all acetic acid and glycolaldehyde with purity above 99%.…”

Separation of phenols and ketones from bio-oil produced from ethanolysis of wheat stalk

“…Considering the mild condition, extraction and column chromatography has been employed to separate bio-oil. Table 1 summarizes the literatures which focused on the separation of bio-oil by extraction and column chromatography [2,7,8,[16][17][18][19][20][21][22][23][24][25][26]. Extraction is always used as bench-scale separation technique of bio-oil and has been widely investigated to produce phenols and sugars (such as levoglucosan and glycolaldehyde) from bio-oil as Table 1 lists.…”