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Removal of Tannic Acid From Aqueous Solution by Cloud Point Extraction and Investigation of Surfactant Regeneration by Microemulsion Extraction
Author(s) -
Ghouas H.,
Haddou B.,
Kameche M.,
Canselier J. P.,
Gourdon C.
Publication year - 2016
Publication title -
journal of surfactants and detergents
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.349
H-Index - 48
eISSN - 1558-9293
pISSN - 1097-3958
DOI - 10.1007/s11743-015-1764-9
Subject(s) - cloud point , pulmonary surfactant , extraction (chemistry) , coacervate , aqueous solution , tannic acid , microemulsion , chromatography , chemistry , sodium dodecyl sulfate , ammonium bromide , aqueous two phase system , organic chemistry , biochemistry
The aim of this work is the extraction of tannic acid (TA) with two commercial nonionic surfactants, separately: Lutensol ON 30 and Triton X ‐114 (TX‐114).The experimental cloud point extraction results are expressed by four responses to surfactant concentration and temperature variations: extent of TA extraction ( E ), remaining solute ( X s,w ) and surfactant ( X t,w ) concentrations in dilute phase and volume fraction of coacervate (Φ c ) at equilibrium. An empirical smoothing method was used and the results are represented on three dimensional plots. In optimal conditions, the extraction extent of TA reaches 95 and 87 % using TX‐114 and Lutensol ON 30, respectively. Sodium sulfate, cetyltrimethylammonium bromide (CTAB) addition and pH effect are also studied. Finally, the possibility of recycling of the surfactant is proved.