Bioethanol: Uses and Advantages
VILNIUS GEDIMINAS TECHNICAL UNIVERSITY
FACULTY OF TRANSPORT ENGINEERING DEPARTMENT OF AUTOMOBILE TRANSPORT
Bioethanol
Vilnius, 2011
CONTENTS
Introduction…………………………………………………………………………….………..3 1. What is Bioethanol?...........................................................................................................4 2. Bioethanol Production............................................................................................................4 3.1. Concentrated Acid Hydrolysis Process .....................................................................5 3.2. Dilute Acid Hydrolysis ............................... .............................................................5 3.3. Enzymatic Hydrolysis ......................... ......................................................................5 3.4. Wet Milling Processes ......................... .....................................................................5 3.5. Dry Milling Process ......................... .........................................................................6 3.6. Sugar Fermentation Process ......................... .............................................................6 3.7. Fractional Distillation Process ........................ ..........................................................7 3. Ethanol-based engines............................... .............................................................................7 4. Environment.........................................................................................................................9 5. Advatages and disadvantages of bioethanol fuel..................... ..........................................9 6.8. Engine cold start during the winter..........................................................................11 6. Numbers
FACULTY OF TRANSPORT ENGINEERING DEPARTMENT OF AUTOMOBILE TRANSPORT
Bioethanol
Vilnius, 2011
CONTENTS
Introduction…………………………………………………………………………….………..3 1. What is Bioethanol?...........................................................................................................4 2. Bioethanol Production............................................................................................................4 3.1. Concentrated Acid Hydrolysis Process .....................................................................5 3.2. Dilute Acid Hydrolysis ............................... .............................................................5 3.3. Enzymatic Hydrolysis ......................... ......................................................................5 3.4. Wet Milling Processes ......................... .....................................................................5 3.5. Dry Milling Process ......................... .........................................................................6 3.6. Sugar Fermentation Process ......................... .............................................................6 3.7. Fractional Distillation Process ........................ ..........................................................7 3. Ethanol-based engines............................... .............................................................................7 4. Environment.........................................................................................................................9 5. Advatages and disadvantages of bioethanol fuel..................... ..........................................9 6.8. Engine cold start during the winter..........................................................................11 6. Numbers