Asian Journal of Microbiology, Biotechnology & Environmental Sciences Paper

Vol 21, Issue 2, 2019; Page No.( 475-478)

EXTRACTION OF ECOTOXIC DYES FROM TEXTILE DYEING EFFLUENTS BY SOLVENT EXTRACTION WITH NATURAL SURFACTANTS FROM PERICARP OF SOAPNUT

RAMAPRIYA R., ASWINI V., RAMALINGAM P., MANIMARAN D.R., SUGANTHY M. AND SARASWATHY N.

Abstract

Solvent extraction is the emerging technique to remove the dyes from effluent. In this study non polar solvent such as iso-amyl alcohol, n-butyl alcohol, and iso-butyl alcohol were used to extract the textile dyealong with natural surfactants obtained from pericarp of soapnut. Parameters that influenced the extraction process by one-factor-at-a time were initial dye concentration, surfactant dose, time, pH and temperature. These parameters were further optimized by Plackett-Burman design and response surface methodology. Among the solvents tested, iso-amyl alcohol showed maximum percent extraction of acid green dye (90%). Scale-up studies (at 300 mL) was also carried out under the above optimized conditions, and the extraction efficiency was reduced to 56%.

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