Citric+acid+recovery

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This article was downloaded by:[CDL Journals Account] On: 17 September 2007 Access Details: [subscription number 780222585] Publisher: Taylor & Francis Informa Ltd Registered in England and Wales Registered Number: 1072954 Registered office: Mortimer House, 37-41 Mortimer Street, London W1T 3JH, UK Separation Science and Technology Publication details, including instructions for authors and subscription information: http://www.informaworld.com/smpp/title~content=t713708471 Equilibria and Kinetics of Extraction of Citric Acid from Aqueous Solutions in Alamine 336-Cyclohexanone System Bhaurao P. Nikhade a ; Vishwas G. Pangarkar a a Chemical Engineering Division, Mumbai University Institute of Chemical Technology (formerly UDCT), Mumbai, India Online Publication Date: 01 September 2005 To cite this Article: Nikhade, Bhaurao P. and Pangarkar, Vishwas G. (2005) 'Equilibria and Kinetics of Extraction of Citric Acid from Aqueous Solutions in Alamine 336-Cyclohexanone System', Separation Science and Technology, 40:12, 2539 - 2554 To link to this article: DOI: 10.1080/01496390500267681 URL: http://dx.doi.org/10.1080/01496390500267681 PLEASE SCROLL DOWN FOR ARTICLE Full terms and conditions of use: http://www.informaworld.com/terms-and-conditions-of-access.pdf This article maybe used for research, teaching and private study purposes. Any substantial or systematic reproduction, re-distribution, re-selling, loan or sub-licensing, systematic supply or distribution in any form to anyone is expressly forbidden. The publisher does not give any warranty express or implied or make any representation that the contents will be complete or accurate or up to date. The accuracy of any instructions, formulae and drug doses should be independently verified with primary sources. The publisher shall not be liable for any loss, actions, claims, proceedings, demand or costs or damages whatsoever or howsoever caused arising directly or indirectly in connection with or arising out of the use of this material.
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Downloaded By: [CDL Journals Account] At: 18:53 17 September 2007 Equilibria and Kinetics of Extraction of Citric Acid from Aqueous Solutions in Alamine 336–Cyclohexanone System Bhaurao P. Nikhade and Vishwas G. Pangarkar Mumbai University Institute of Chemical Technology (formerly UDCT), Chemical Engineering Division, Matunga, Mumbai, India Abstract: Equilibria and kinetics for the extraction of citric acid by Alamine 336 in cyclohexanone as diluent are reported. The theory of extraction accompanied by a chemical reaction has been used to obtain the intrinsic kinetics of extraction of citric acid by Alamine 336 in cyclohexanone. The reaction has been found to be Frst order in both Alamine 336 and citric acid with a rate constant of 8.8 ± 10 2 3 m 3 kmol 2 1 s 2 1 . Keywords: Citric acid, Alamine 336, cyclohexanone, reactive extraction, equiilibria, kinetics INTRODUCTION Citric acid is one of the most commonly used acids in the food and pharma- ceutical industry because of its high solubility, palatability, strong chelating power, and low toxicity. The food industry is the largest consumer of citric acid, using almost 70% of the total production, followed by about 12% by the pharmaceutical industry and 18% for other applications. There is an
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