TITLE:
Rapid and Continuous Extraction of Methyl Red from Wastewater Using Counter Current Chromatography
AUTHORS:
Nasrin Adli, Azam Azimvand, Zinolabedin. Bashiri Sadr, Moharam Moharamzadeh, Hossein Salar Amoli
KEYWORDS:
Counter Current Chromatography, Rapid Extraction, Methyl Red, Continuous Removal
JOURNAL NAME:
Materials Sciences and Applications,
Vol.7 No.6,
June
13,
2016
ABSTRACT: A new prototype and
simple low speed counter current chromatography (LSCCC) has been fabricated and
a laboratory work has been carried out for rapid and continuous removal of
methyl red from wastewater using xylene as an extractant. The distribution
ratio (D) and percentage of recoveries were calculated. The optimum
concentration for extraction of methyl red was in the range of 2 × 10-4 to 8 × 10-4 mol·L-1. Maximum extraction achieved at pH range of 2 to
4.5. Various dye concentrations and solvent effects were studied to optimized
conditions. It was shown that when the ratio of the organic phase to aqueous
phase increased to more than 3:1, the striping efficiency decreased sharply.
The experiments were carried out for 5 times and the highest extraction
achieved was 99.8 per cent by two-solvent system LSCCC in
just 5 minutes. Real wastewater samples were analyzed and the efficiency of the
technique was compared with liquid-liquid extraction (LLE). In practice it was
shown that although both techniques are rapid, the efficiency of the LSCCC is
much better than LLE.