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Title: Hydrotropic studies on solubility mass transfer coefficient and extraction of organic compounds
Researcher: Gnana Prakash, D
Guide(s): Nagendra Gandhi, N
Keywords: Hydrotropic studies
Upload Date: 20-Jan-2014
University: Anna University
Completed Date: 2012
Abstract: In the present work a comprehensive study on the effect of hydrotropes such as sodium salicylate, sodium benzoate, nicotinamide and urea on the solubility and mass transfer coefficient of a series of organic acids such as benzoic acid, p-hydroxybenzoic acid, p-nitrobenzoic acid and cinnamic acid has been carried out. Similarly, the effect of hydrotropes i.e., potassium p-toluene sulfonate, sodium salicylate, sodium benzoate, nicotinamide and urea on the solubility and mass transfer coefficient of alizarin has been studied. Data on various aspects of hydrotropic study on the solubility and mass transfer coefficient for a series of organic acids and alizarin have been provided for the first time. The experimental solubility data for various solutes at different temperatures have been analyzed using the modified Setchenow equation. The solubility of the organic acids and alizarin increases with increase in hydrotrope concentration and also with system temperature. All hydrotropes used in this work showed an enhancement in the solubility and mass transfer coefficient to different degrees. The maximum enhancement factor, which is the ratio of the value in presence and absence of a hydrotrope, has been determined for both the cases. To predict the solubility of organic acids and alizarin in different hydrotrope solutions Artificial Neural Network (ANN) model has been developed. Two hydrotropes such as sodium salicylate and sodium cumene sulfonate were used to study the extraction efficiency and recovery of mangiferin from hydrotrope solutions. Sodium salicylate was found suitable for extraction and recovery of mangiferin. The individual and interactive effects of extraction variables such as concentration of hydrotropes, extraction temperature and raw material loading were evaluated by Response Surface Methodology (RSM) using Central Composite Design (CCD). The implications of the study have been fully discussed and the scope for future research has been suggested. newline newline newline
Pagination: xxiii, 188
Appears in Departments:Faculty of Technology

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02_certificates.pdf818.35 kBAdobe PDFView/Open
03_abstract.pdf16.73 kBAdobe PDFView/Open
04_acknowledgement.pdf15.28 kBAdobe PDFView/Open
05_contents.pdf52.79 kBAdobe PDFView/Open
06_chapter 1.pdf21.86 kBAdobe PDFView/Open
07_chapter 2.pdf44.18 kBAdobe PDFView/Open
08_chapter 3.pdf442.56 kBAdobe PDFView/Open
09_chapter 4.pdf33.82 kBAdobe PDFView/Open
10_chapter 5.pdf54.85 kBAdobe PDFView/Open
11_chapter 6.pdf41.28 kBAdobe PDFView/Open
12_chapter 7.pdf880.86 kBAdobe PDFView/Open
13_chapter 8.pdf35.71 kBAdobe PDFView/Open
14_appendices 1 to 5.pdf314.55 kBAdobe PDFView/Open
15_references.pdf46.33 kBAdobe PDFView/Open
16_publications.pdf15.17 kBAdobe PDFView/Open
17_vitae.pdf13.89 kBAdobe PDFView/Open

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