Volume 45, Issue 3 pp. 417-424
Research Article

Reactive Extraction of Gluconic Acid Using Trioctylamine in Different Diluents

Sivasankar Kakku

Sivasankar Kakku

Manipal University Jaipur, Dehmikalan, Department of Chemical Engineering, 303007 Jaipur, Rajasthan, India

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Shripal M. Gaikwad

Shripal M. Gaikwad

Shivaji University, Department of Technology, 416004 Kolhapur –, Maharashtra, India

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Shashank Gaikwad

Corresponding Author

Shashank Gaikwad

CSIR-National Chemical Laboratory, Chemical Engineering & Process Development, 411008 Pune, Maharashtra, India

Correspondence: Shashank Gaikwad ([email protected]), Chemical Engineering & Process Development, CSIR-National Chemical Laboratory, Pune – 411008, Maharashtra, India. Nandana Chakinala ([email protected]), Department of Chemical Engineering, Manipal University Jaipur, Dehmikalan, Jaipur – 303007, Rajasthan, India.Search for more papers by this author
Suyogkumar V. Taralkar

Suyogkumar V. Taralkar

Annasaheb Dange College of Engineering and Technology, Department of Food Technology, 416301 Ashta, Maharashtra, India

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Sarath Babu Billa

Sarath Babu Billa

Sri. Venkateswara University, Department of Chemical Engineering, 517502 Tirupati, Andhra Pradesh, India

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Anand Gupta Chakinala

Anand Gupta Chakinala

Manipal University Jaipur, Dehmikalan, Department of Chemical Engineering, 303007 Jaipur, Rajasthan, India

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Nandana Chakinala

Corresponding Author

Nandana Chakinala

Manipal University Jaipur, Dehmikalan, Department of Chemical Engineering, 303007 Jaipur, Rajasthan, India

Correspondence: Shashank Gaikwad ([email protected]), Chemical Engineering & Process Development, CSIR-National Chemical Laboratory, Pune – 411008, Maharashtra, India. Nandana Chakinala ([email protected]), Department of Chemical Engineering, Manipal University Jaipur, Dehmikalan, Jaipur – 303007, Rajasthan, India.Search for more papers by this author
First published: 15 December 2021
Citations: 4

Presented at the International Chemical Engineering Conference on “100 Glorious Years of Chemical Engineering & Technology”, Jalandhar, India, September 2021.

Abstract

Reactive extraction of gluconic acid (GA) from aqueous solutions was investigated using trioctylamine (TOA) as extractant in the presence of benzyl alcohol (BA) and 1-decanol (DE) as diluents. Physical extraction of GA with pure diluents in the absence of TOA was found to be poor. Reactive extraction with an amine-diluent mixture enhanced the separation process. Higher extraction efficiencies and distribution coefficients were achieved in the presence of BA as compared to DE. Further optimization studies were carried out to determine the synergistic effect of amine/diluent ratio. Loading ratios higher than 0.5 suggested 3:1 complex formation of GA with the amine. A reactive extraction mechanism of GA in TOA was proposed, and the equilibrium complexation constant was determined.

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