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Ismail Inci,Hasan Uslu,Y. Selim Asci 한국공업화학회 2012 Journal of Industrial and Engineering Chemistry Vol.18 No.1
Reactive extraction can be used for the recovery of carboxylic acids from fermentation broth. Through the formation of complex with extractants at the two-phase interface, the carboxylic acids are partitioned into organic solvents. But, the recovery of carboxylic acids is interrupted by the conditions of fermentation broth. In this work, kinetic studies for the extraction of succinic acid from aqueous solution with tridodecylamine diluted in 2-octanone and 1-octanol have been carried out. Equilibrium and kinetic studies for the extraction of succinic acid from aqueous solution with tridodecylamine diluted in two functional groups (alcohol and ketone) such as 2-octanone and 1-octanol are reported. All measurements have been carried out at 298.15 K. The results of the liquid–liquid equilibrium measurements have been correlated by a linear solvation energy relationship – LSER model which takes into account physical interactions.
Xue Wu,Zhidong Chang,Junchao Yuan,Jingge Feng,Hasan Uslu,Wenjun Li 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.58 No.-
In order to get optimal extraction performance as well as ultra-low solvent residual, three fluorinated hexane, perfluorohexane (C6F14), 1H-perfluorohexane (C6F13H) and 1H,6H-perfluorohexane (C6F12H2), were evaluated as diluents for synergistic effect on extraction capability of 1H,1H,2H,2H-Perfluorooctan-1-ol by the way of experimental and computational investigation. Based on extraction experiments, C6F14 showed obvious antagonistic effect because of hydrophobic nature, while the synergistic effect of C6F12H2 was better than that of C6F13H. According to DFT calculation, supported by FT-IR and 1H NMR spectra, the synergistic effect was illustrated as that fluorinated hexane could interact with salicylic acid-fluorinated octanol complex through hydrogen bond.
Xue Wu,Zhidong Chang,Jingge Feng,Hui Dang,Hasan Uslu,Wenjun Li 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.66 No.-
In order to get optimal extraction performance as well as ultra-low solvent residual, the extraction behavior of tris(2,2,3,3,4,4,4-heptafluorobutyl) phosphate (FTBP) dissolved in 2,3,4,5,6-Pentafluorotoluene (FB) was evaluated to investigate the influence of the aggregation state on the extraction of salicylic acid (SA). The effect of SA distribution and water content on aggregation structure in organic phase was assessed through analysis of SAXS data. Based on molecular dynamic simulation, FTBP tended to aggregate with the existence of FB to accommdate more SA molcules. Water in this case was not the critical factor for aggregation formation due to the hydrophobicity of fluorinated solvents.