sensitive and selective method for liquid-liquid extraction of cationic dye from aqueous solution

Research Article
Sathya M, Elumalai S and Muthuraman G*
DOI: 
xxx-xxxx-xxx
Subject: 
science
KeyWords: 
Malachite green, D2EHPA, Extraction, Stripping, Reusability.
Abstract: 

A rapid, sensitive and selective method, liquid-liquid extraction has been used to remove the dye from aqueous synthetic solutions using Di (2-ethylhexyl) phosphoric acid (D2EHPA) in hexane as carrier. Malachite green (MG) was determined by using UV visible spectrophotometry at 617 nm. The percentage of extraction of dye increases with increasing pH and carrier in aqueous and organic phase respectively. The maximum percentage of extraction was obtained at pH ±9.0. The loaded organic dye stripped into glacial acetic acid and oxalic acid solution. The extraction and stripping of dye does not varied in presence of various inorganic salts. The other parameters examined were; effect of extractant concentration, effect of diluents, effect of pH, effect of temperature, various stripping agents, aqueous to organic phase ratio and reusability of solvent.