Recovery of erythromycin from aqueous solutions with an ionic liquid and high-pressure carbon dioxide

被引:17
作者
Manic, Marina S. [1 ]
da Ponte, Manuel Nunes [1 ]
Najdanovic-Visak, Vesna [1 ]
机构
[1] Univ Nova Lisboa, Fac Ciencias & Tecnol, Dept Quim, REQUIMTE, P-2829516 Caparica, Portugal
关键词
Extraction; Ionic liquids; Antibiotic; Supercritical CO2; SUPERCRITICAL CO2; AMINO-ACIDS; EXTRACTION; WATER; SOLUBILITY; SEPARATION; MIXTURES; SOLVENTS; PURIFICATION; ANTIBIOTICS;
D O I
10.1016/j.cej.2011.04.037
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Recovery of erythromycin from aqueous solutions was studied in two steps: (i) single- and multi-stage extraction of erythromycin from an aqueous solution with a hydrophobic ionic liquid, 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide [BMPyrrol][Tf2N], as a function of pH and feed to solvent volume ratio, and (ii) high-pressure CO2 extraction of erythromycin from the ionic liquid, as a function of pressure, temperature and presence of water. Furthermore, data on the mutual solubilities of the hydrophobic ionic liquid and water, as well as on the solubility of erythromycin in [BMPyrrol][Tf2N], were obtained. The chemical stability of erythromycin in water-free and water saturated ionic liquid was tested. These results allowed the evaluation of the coupling of liquid-liquid and high-pressure CO2 extractions. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码:904 / 911
页数:8
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