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Articles by Bashar Mudhaffar Abdullah
Total Records ( 2 ) for Bashar Mudhaffar Abdullah
  Bashar Mudhaffar Abdullah and Jumat Salimon
  Linoleic Acid (LA) from a mixture of free fatty acids obtained from local Jatropha curcas seed oil was separated using urea complex fractionation. In this study, variations of factors that affect the urea complex fractionation such as the ratio of urea to free fatty acid, crystallization temperature and crystallization time were examined to obtain optimum condition using response surface method (D-optimal design). Under the optimal conditions, the percentage of LA was 92.81 and the percentage of yield of NUCF 7.8 at urea/FFA ratio (w/w) 5, a crystallization temperature of -10°C and a crystallization time 24 h. This showed that the experimental conditions should be suitable for the preparation of high purity LA. Performing the experiment at this condition gave results that were close to the predicted values.
  Bashar Mudhaffar Abdullah and Jumat Salimon
  This study has attempted to show the efficiency of epoxidation under different catalysts conditions. It was found that different catalysts have been used for epoxidation of oil and unsaturated fatty acid with almost complete conversion and mono-epoxide of unsaturated carbon. Catalysts such as H2SO4, Ti(IV)-grafted silica catalysts, tungsten-based catalyst, acidic ion, exchange resin, potassium peroxomonosulfate, alumina-catalzed have been studied. H2SO4 was found to be more effective in terms of oxirane complete conversion. The epoxidation of oils and unsaturated fatty acids is widely used for the production of oxiranes, valuable industrial products providing an access to various fine chemicals but none has yet found industrial application. The application of different catalysts enables the preparation of a number of epoxy compounds impossible to obtain by other methods, or considerable improvement of the yields of those currently studied.
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