Reactive extraction of itaconic acid using tri‐n‐butyl phosphate and aliquat 336 in sunflower oil as a non‐toxic diluent |
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Authors: | Kailas L Wasewar Diwakar Shende Amit Keshav |
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Affiliation: | 1. Department of Chemical Engineering, Visvesvaraya National Institute of Technology, Nagpur—440010 India;2. Department of Chemical Engineering, National Institute of Technology (NIT) Raipur, Chhattisgarh—492010, India |
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Abstract: | Itaconic acid finds a place in various industrial applications. It can be produced by biocultivation in a clean and environment friendly route but recovery of the acid from the dilute stream of the bioreactor is an economic problem. Reactive extraction is a promising method to recover carboxylic acid but suffers from toxicity problems of the diluent and extractant employed. So there is need for a non‐toxic extractant and diluent or a combination of less toxic extractants in a non‐toxic diluent that can recover acid efficiently. Effect of different extractants: tri‐n‐butylphosphate (TBP) (an organophosporous compound) and Aliquat 336 (a quaternary amine) in sunflower oil was studied to find the best extractant–sunflower oil combination. Equilibrium complexation constant, KE, values of 1.789 and 2.385 m3 kmol?1, respectively, were obtained for itaconic acid extraction using TBP and Aliquat 336 in sunflower oil. The problem of toxicity in reactive extraction can be reduced by using a natural non‐toxic diluent (sunflower oil) with the extractant. Copyright © 2010 Society of Chemical Industry |
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Keywords: | itaconic acid reactive extraction toxicity sunflower oil tri‐n‐butylphosphate Aliquat 336 |
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