Phenol and benzenoid alcohols separation from aqueous stream using cloud point extraction: Scaling-up of the process in a mixer-settler
| Autor: | Boumediene Haddou, Jean-Paul Canselier, Houaria Benkhedja, Christophe Gourdon |
|---|---|
| Přispěvatelé: | Laboratoire de génie chimique [ancien site de Basso-Cambo] (LGC), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées, Université des sciences et de la Technologie d'Oran Mohamed Boudiaf [Oran] (USTO MB), Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - INPT (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université des Sciences et de la Technologie Mohamed Boudiaf d'Oran - USTO (ALGERIA), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE) |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Analytical chemistry
02 engineering and technology 010402 general chemistry 01 natural sciences chemistry.chemical_compound Cloud point extraction [CHIM.GENI]Chemical Sciences/Chemical engineering Phase (matter) Phenol Génie chimique [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering Safety Risk Reliability and Quality Génie des procédés Waste Management and Disposal Cloud point Coacervate Chromatography Aqueous solution [SDE.IE]Environmental Sciences/Environmental Engineering Process Chemistry and Technology Mixer-settler Extraction (chemistry) Nonionic surfactants 021001 nanoscience & nanotechnology 6. Clean water 0104 chemical sciences chemistry 13. Climate action Benzyl alcohol Organic pollutants 0210 nano-technology Biotechnology |
| Zdroj: | Journal of Water Process Engineering Journal of Water Process Engineering, Elsevier, 2017, 18, pp.202-212. ⟨10.1016/j.jwpe.2017.06.016⟩ |
| ISSN: | 2214-7144 |
| DOI: | 10.1016/j.jwpe.2017.06.016⟩ |
| Popis: | International audience; In the present work, the cloud point extraction (CPE) of three organic pollutants (phenol,benzyl alcohol and 1-phenylethanol) with aqueous solutions of biodegradable alkoxylated nonionic surfactants (TERGITOL 15-S-7 and SIMULSOL NW342), is investigated. First, the partial phase diagrams of the water–surfactant binary systems are established. Then, the effects of organic pollutants and sodium chloride on the cloud point (Tc) are determined. Extraction efficiency is evaluated by the following responses: percentage of solute extracted, E (%), residual concentrations of solute and surfactant in dilute phase (Xs,w, and Xt,w, respectively) and volume fraction of coacervate at equilibrium (ϕc). Three-dimensional empirical correlations are used for fitting the experimental results. The comparison between experimental and calculated values allows model parameter identification. Based on these data, CPE was implemented in a continuous mixer-settler device. The feasibility of a multi-stage crossflow process for the purification of samples containing phenol using SIMULSOL NW342 was tested. Six stages were required to reduce the pollutant concentration below the allowed level (0.3 ppm), which proves the efficiency of CPE in the treatment of wastewaters. |
| Databáze: | OpenAIRE |
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