from food waste to fuel cell 食物渣工程 st. paul’s co-educational college, hk 5a choi wai tak...
TRANSCRIPT
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FROM FOOD WASTE TO FUEL CELL
食物渣工程ST. PAUL’S CO-EDUCATIONAL COLLEGE, HK5A CHOI WAI TAK
5A LO HO WEN
5A PANG WAI CHING EUNICE
5B LI LOK HIN
5F WONG TIN WAN
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CONTENT
1. Background information
2. Objective
3. Significance
4. Experiment: Preparation of ethanol (3 steps)
5. Interpretation of results
6. Ethanol fuel cell + cyclic voltammetry
7. Benefits of using food waste
8. Limitations
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Hong Kong has a high carbon emission per capita (5.5 metric tonnes)
1. Background information
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landfills in Hong Kong will be depleted very soon
1. Background information
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ok so… what should we do?
1. Background information
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Make use of food waste to produce ethanol which powers fuel cells
2. Objective
Fuel cell
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reduce carbon emission + save landfills!!
3. Significance
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4. EXPERIMENT
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WHAT ARE THE PROCEDURES FOR THE PREPARATION OF ETHANOL?
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STEP 1: GATHERING FOOD WASTE
Considerations when selecting food waste samples:
-Abundance
-Availability
-Ethical issue (why not corn?)
Bread crust Tofu dregs Coffee grounds
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STEP 2:FERMENTATION OF FOOD WASTE EXTRACT
Anaerobic fermentation pathway
Add yeast
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STEP 3:DISTILLATION OF FERMENTED EXTRACT
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5. INTERPRETATION OF RESULTS
A.) Comparing the amount of ethanol obtained from
different kinds of food waste
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B.) Comparing the efficiency of fermentation at
different temperatures
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6. ETHANOL FUEL CELL
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CYCLIC VOLTAMMETRY
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7. BENEFITS OF USING FOOD WASTE TO OBTAIN ETHANOL
• Converting waste into useful materials
• Alleviating the landfill problems in Hong Kong
• Ethanol is a clean fuel
• Avoid problems in current bioethanol generation methods
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8. LIMITATIONS
• Limited variety of food wastes
• Scale of research
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THANK YOUAcknowledge to
St. Paul’s Co-Educational College
The University of Hong Kong