Polyphenol, polysaccharide and lactate extraction from pulping factory black liquor by ionic liquids

•Soda pulping factory black liquor contained hight concentrations of polyphenols.•Phosphonium based ionic liquids extracted polyphenols from black liquor.•[P66614]Cl and [P66614]Br were both studied for extraction characterization.•Lactate and polysaccharides were also co-extracted but with a lower...

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Bibliographic Details
Published in:Separation and purification technology 2018-05, Vol.196, p.140-148
Main Authors: Magnin, Jean-Pierre, Papaiconomou, Nicolas, Billard, Isabelle
Format: Article
Language:English
Subjects:
[P66614]Cl
Black liquor
Chemical engineering
Chemical Sciences
Distribution coefficient
Extraction
Lactate
Polyphenol
Polysaccharides
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Summary:•Soda pulping factory black liquor contained hight concentrations of polyphenols.•Phosphonium based ionic liquids extracted polyphenols from black liquor.•[P66614]Cl and [P66614]Br were both studied for extraction characterization.•Lactate and polysaccharides were also co-extracted but with a lower efficiency.•[P66614]Cl showed better polyphenol extraction capacities than [P66614]Br. Extraction of polyphenols, polysaccharides and organic acids present in a liquor issued from a pulping factory, so-called black liquor, was studied using two ionic liquids trihexyltetradecylphosphonium chloride ([P66614]Cl) and trihexyltetradecylphosphonium bromide ([P66614]Br). The extraction of each of the three compounds mentioned above was reported asa function of the dilution of the initial black liquor, the volume ratio of liquor vs. ionic liquid, and the initial pH of the black liquor. Polyphenols and polysaccharides were quantitatively extracted at room temperature with both ionic liquids. Extraction of lactate anions was found to be low, exhibiting distribution coefficients below 8 in all cases.
ISSN:1383-5866
1873-3794
DOI:10.1016/j.seppur.2017.08.012