Novel polyethylene glycol induced cloud point system for extraction and back-extraction of organic compounds

Novel polyethylene glycol induced cloud point system for extraction and back-extraction of organic compounds
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用于有机化合物萃取和反萃取的新型聚乙二醇诱导浊点系统

DOI:
10.1016/j.seppur.2009.01.001
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发表时间:
2009-04
影响因子:
8.6
通讯作者:
--
中科院分区:
工程技术1区
文献类型:
--
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开发了一种新型聚乙二醇(PEG)诱导浊点系统(PEG-CPS),具有高亲水亲油平衡(HLB)值非离子表面活性剂和高分子量 PEG,用于有机化合物的萃取。该新型系统的主要优点是可以用Winsor I微乳液萃取进行从非离子表面活性剂水溶液中反萃取非挥发性有机化合物的反萃取过程。因此,有机化合物与水溶液中的非离子表面活性剂的分离成为可能,从经济和环境考虑,这对于浊点萃取(CPE)或浊点系统中的萃取微生物转化具有潜力。以Triton X-100为模型亲水性非离子表面活性剂,测定了PEG-CPS的相图。用PEG-CPS萃取高沸点有机化合物,如苯酚、对硝基苯酚和1-萘酚苯酚。然后用微乳液反萃取PEG-CPS富含表面活性剂相中的有机化合物。
A novel polyethylene glycol (PEG) induced cloud point system (PEG-CPS) with high hydrophile–lipophile balance (HLB) value nonionic surfactant and high molecular weight PEG had been developed for extraction of organic compounds. The main advantage of this novel system is that the back extraction process of stripping of nonvolatile organic compounds from the nonionic surfactant aqueous solution can be carried out with Winsor I microemulsion extraction. Thus a separation of organic compounds from the nonionic surfactants in aqueous solution become possible, which is potential for cloud point extraction (CPE) or extractive microbial transformation in cloud point system from economical and environmental consideration. With Triton X-100 as a model hydrophilic nonionic surfactant, the phase diagram of PEG-CPS was determined. High boiling point organic compounds, such as phenol, p-nitrophenol and 1-naphthol phenol, were extracted with PEG-CPS. Then the organic compounds in the surfactant rich phase of PEG-CPS were back-extracted with microemulsion.
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