CATIONIC DYE REMOVAL FROM AQUEOUS SOLUTIONS USING IONIC LIQUID AND NONIONIC SURFACTANT-IONIC LIQUID SYSTEMS: A COMPARATIVE STUDY BASED UPON EXPERIMENTAL DESIGN

In order to separate methylene blue from aqueous solution, a novel method based upon liquid-liquid extraction, using a nonionic surfactant-ionic liquid system as extracting phase, was investigated. A comparative study was carried out with the ionic liquid 1-butyl-3-methylimidazolium hexafluorophosph...

Full description

Saved in:
Bibliographic Details
Published in:Chemical engineering communications 2014-01, Vol.201 (1), p.41-52
Main Authors: Talbi, Z., Haddou, B., Ghouas, H., Kameche, M., Derriche, Z., Gourdon, C.
Format: Article
Language:English
Subjects:
Aqueous solutions
Chemical and Process Engineering
Chemical engineering
Chemical Sciences
Cloud point extraction
Comparative analysis
Dyes
Effluents
Engineering Sciences
Ionic liquid
Ionic liquids
Liquid-liquid extraction
Liquids
Methylene blue
Nonionic
Nonionic surfactant
Surfactants
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In order to separate methylene blue from aqueous solution, a novel method based upon liquid-liquid extraction, using a nonionic surfactant-ionic liquid system as extracting phase, was investigated. A comparative study was carried out with the ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate, known as [C4mim]PF6. By using the nonionic surfactant-ionic liquid system, the extraction efficiency could reach 97.8%, indicating that the addition of nonionic surfactant (Triton X-114) significantly improves the extraction of methylene blue. Under optimal conditions, the dye concentration in the effluent showed an almost 50-fold reduction. However, the extraction extent of methylene blue was found to be low at low pH values, and in the presence of K 2 CO 3, which may be useful for surfactant-ionic liquid system regeneration.
ISSN:0098-6445
1563-5201
DOI:10.1080/00986445.2012.759563