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From Food Waste to Fuel Cell 食物渣工程

From Food Waste to Fuel Cell 食物渣工程. ST. PAUL’S CO-EDUCATIONAL COLLEGE, HK 5A Choi Wai Tak 5A Lo Ho Wen 5A Pang Wai Ching Eunice 5B Li Lok Hin 5F Wong Tin Wan . Content. Background information Objective Significance Experiment: Preparation of ethanol (3 steps)

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From Food Waste to Fuel Cell 食物渣工程

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  1. From Food Waste to Fuel Cell食物渣工程 ST. PAUL’S CO-EDUCATIONAL COLLEGE, HK 5A Choi WaiTak 5A Lo Ho Wen 5A Pang WaiChing Eunice 5B Li LokHin 5F Wong Tin Wan

  2. Content • Background information • Objective • Significance • Experiment: Preparation of ethanol (3 steps) • Interpretation of results • Ethanol fuel cell + cyclic voltammetry • Benefits of using food waste • Limitations

  3. 1. Background information Hong Kong has a high carbon emission per capita (5.5 metric tonnes)

  4. 1. Background information landfills in Hong Kong will be depleted very soon

  5. 1. Background information ok so… what should we do?

  6. 2. Objective Make use of food waste to produce ethanol which powers fuel cells Fuel cell

  7. 3. Significance reduce carbon emission + save landfills!!

  8. 4. Experiment

  9. What are the procedures for the preparation of ethanol?

  10. Step 1: Gathering food waste Considerations when selecting food waste samples: • Abundance • Availability • Ethical issue (why not corn?) Bread crust Tofu dregs Coffee grounds

  11. Step 2:Fermentation of food waste extract Anaerobic fermentation pathway Add yeast

  12. Step 3:Distillation of fermented extract

  13. 5. Interpretation of results A.) Comparing the amount of ethanol obtained from different kinds of food waste

  14. B.) Comparing the efficiency of fermentation at different temperatures

  15. 6. Ethanol fuel cell

  16. Cyclic Voltammetry

  17. 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

  18. 8. Limitations • Limited variety of food wastes • Scale of research

  19. THANK YOU Acknowledge to • St. Paul’s Co-Educational College • The University of Hong Kong

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