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Effects of synthesis parameters in a solvent-free production of isoamyl acetate in a milli-reactor

Effects of synthesis parameters in a solvent-free production of isoamyl acetate in a milli-reactor / Rajaviknesswaran Singaravelan
Isoamil asetat adalah ester yang mempunyai kewangian sama dengan buah pisang. Isoamil asetat selalunya digunakan sebagai perasa tambahan khasnya dalam industri pemakanan. Pada zaman dahulu, kajian tentang isoamil asetat telah dilakukan secara tradisional, iaitu menggunakan kaedah pengestrakan dari tumbuhan atau buah diikuti dengan penghasilan isoamil asetat dengan proses tindak balas kimia. Kini, proses esterifikasi telah berkembang maju kearah penghasilan isoamyl asetat dengan menggunakan pemangkin. Hal ini kerana, pelanggan lebih suka akan isoamyl asetat yang dihasilkan dengan proses semula jadi berbanding dengan proses tindak balas kimia. Selain itu, process intensifikasi juga sedang menjadi popular dalam kalangan penyelidik kerana kelebihannya. Hal ini kerana proses intensifikasi boleh dilakukan dalam mili-reaktor yang mempunyai kelebihan untuk menghasilkan isoamil asetat yang berkualiti dalam masa yang singkat berbanding reactor kontemporari. Oleh itu, eksperimen ini telah dikhususkan untuk megkaji kesan sintesis parameters terhadap penghasilan isoamyl asetat dalam mili-reactor. Tindak balas antara anhidrida asetik dan alcohol isoamil untuk menghasilkan isoamil asetat dilakukan dalam mili-reaktor yang berdiameter 1 mm. Faktor-faktor yang dikaji ialah kadar aliran reaktan, suhu tindak balas dan nisbah asid-alkohol. Kesan kadar aliran eaktan, suhu tindak balas dan nisbah asid-alkohol kepada penghasilan isoamil acetat telah dikaji. Kesan parameters terhadap trend isoamil asetat dan penukaran anhidrida asetik telah dikaji. Trend kepekatan isoamil asetat telah dikaitkan dengan asid asetik. _______________________________________________________________________________________________________ Isoamyl acetate is a type of ester that has similar fragrance to banana. It is widely being used as banana flavouring in food industries. Initially, isoamyl acetate was extracted using traditional method from plants and fruits, and then followed by chemical synthesis. Over the time, the esterification process is conducted using enzyme because consumers highly prefer naturally synthesized ester compared to chemically synthesized ester. Meanwhile, process intensification is gaining momentum among the researchers due to numerous advantages. This is because the maximum conversion and yield can be achieved in shorter time in milli-reactors compared to the large conventional batch reactors. Thus this study is conducted to investigate the effects of synthesis parameters on the production of isoamyl acetate in milli-reactors. Acetic anhydride is reacted with isoamyl alcohol in milli-reactor of internal diameter 1mm to produce isoamyl acetate. The effect of synthesis parameters such as flow rate of reactants, reaction temperatures and acid-alcohol ratio without the presence of enzyme was investigated in this study. The trend of the final concentration of isoamyl acetate produced and conversion of acetic anhydride was studied. The trend of the final concentration of isoamyl acetate is also related to the by-product of this reaction which is the acetic acid.
Contributor(s):
Rajaviknesswaran Singaravelan - Author
Primary Item Type:
Final Year Project
Identifiers:
Accession Number : 875008142
Language:
English
Subject Keywords:
Isoamyl; ester; banana
First presented to the public:
6/1/2019
Original Publication Date:
6/28/2019
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Chemical Engineering
Citation:
Extents:
Number of Pages - 65
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2019-07-01 15:21:23.102
Submitter:
Mohd Jasnizam Mohd Salleh

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Effects of synthesis parameters in a solvent-free production of isoamyl acetate in a milli-reactor1 2019-07-01 15:21:23.102