Experimental Study on Reactive Extraction of Malonic Acid with Validation by Fourier Transform Infrared Spectroscopy

• DOI: 10.1021/acs.jced.8b00972
• Publication Date: 2019-02-13T21:30:46Z
• Authors: Vicky R. Dhongde; Biswajit S. De; Kailas L. Wasewar
• Keywords: Malonic acid; Mass action law; Diluent

Malonic acid is an essential carboxylic that used as a backbone reactant in deriving multiple higher-order compounds. The successful attempt of producing malonic from biological route has attracted the scientific community to extract fermentation broth or dilute aqueous stream. Experimental study on recovery by reactive extraction was performed, and effects TBP concentration, diluents (alkane, ketone, alcohol), concentration were investigated. equilibrium models (relative basicity mass action law models) number theoretical units (NTU) also evaluated. Fourier transform infrared spectroscopy provided evidence for formation significant bonds among extractant–diluent–acid complexation systems which support experimental outcomes. results are discussed regarding dimerization constant (DMA), partition coefficient (PMA), efficiency (EMA%), distribution (KD(MA)), overall (KE(MA)), loading factor (ZMA). highest 73.5% with 0.5962 mol·kg–1 MIBK. (KD(MA)) various exhibited trend MIBK > octanol heptane. comparison between values predicted model outcomes shows relative better than acid. NTU calculated be 2, estimated modified Kremser equation designing countercurrent column.