Science Investigatory Project
The extraction of Bio-ethanol from banana and apple peelings through the process of Fermentation and Distillation
Purpose & Hypothesis
The main purpose of the experiment was to observe if the common household wastes apple and banana peelings- were suitable to be used as another source for production of bio-ethanol It was hypothesized that the banana peelings would produce more bio-ethanol than the apple peelings due to its greater amount of sugar
Ethanol, which is also known as ethyl alcohol, pure alcohol, grain alcohol, or drinking alcohol, is a volatile, flammable, colorless liquid Ethanol is a renewable fuel made from plants and is a cheap alternative to gasoline Yeasts are eukaryotic microorganisms and unicellar, and can be used to generate electricity in microbial fuel cells and produce ethanol.
Background Information
Background Information
Distillation Process
Fermentation is a process in which energy is derived from the oxidation of organic compounds, therefore producing ethanol and carbon dioxide as waste by-products. Distillation is a process used to separate different mixtures by heating a liquid until it boils, then capturing and cooling the vapor, and collecting it into condensed vapor
Variables
Manipulated Variables Amount of bio-wastes used and the duration of the fermentation process. Responding Variable The responding variable in the experiment was the different yield of bio-ethanol obtained. Controls The temperature in which we boiled the ethanol The amount of water added to each of the bio-waste Amount of yeast added to each of the bio-waste The temperature during the fermentation
Methods
Mashed up apple and banana peelings were each measured to 4 piles of 40g and 4 piles of 60g and placed into a plastic cup 150mL of water was measured and poured into each cup
4 cups of apple and 4 cups of banana were left out to be fermented for 24 hours
6.25 g of Active-Dry Yeast was added to each cup and was sealed with
Purpose & Hypothesis
The main purpose of the experiment was to observe if the common household wastes apple and banana peelings- were suitable to be used as another source for production of bio-ethanol It was hypothesized that the banana peelings would produce more bio-ethanol than the apple peelings due to its greater amount of sugar
Ethanol, which is also known as ethyl alcohol, pure alcohol, grain alcohol, or drinking alcohol, is a volatile, flammable, colorless liquid Ethanol is a renewable fuel made from plants and is a cheap alternative to gasoline Yeasts are eukaryotic microorganisms and unicellar, and can be used to generate electricity in microbial fuel cells and produce ethanol.
Background Information
Background Information
Distillation Process
Fermentation is a process in which energy is derived from the oxidation of organic compounds, therefore producing ethanol and carbon dioxide as waste by-products. Distillation is a process used to separate different mixtures by heating a liquid until it boils, then capturing and cooling the vapor, and collecting it into condensed vapor
Variables
Manipulated Variables Amount of bio-wastes used and the duration of the fermentation process. Responding Variable The responding variable in the experiment was the different yield of bio-ethanol obtained. Controls The temperature in which we boiled the ethanol The amount of water added to each of the bio-waste Amount of yeast added to each of the bio-waste The temperature during the fermentation
Methods
Mashed up apple and banana peelings were each measured to 4 piles of 40g and 4 piles of 60g and placed into a plastic cup 150mL of water was measured and poured into each cup
4 cups of apple and 4 cups of banana were left out to be fermented for 24 hours
6.25 g of Active-Dry Yeast was added to each cup and was sealed with
Bibliography: Workman, Daniel. "Countries Dependent on Oil Imports." 4 May. 2008 < http://importexport.suite101.com/article.cfm/countries_dependent_on_oil _imports>. Poulter, Sean. "Families throw away around one third of all the food they buy." 7 April 2008. < http://www.dailymail.co.uk/news/article-557938/Familiesthrow-away-food-buy-including-4-4million-apples-day.html>. Halperin, Alex. "Ethanol: Myths and Realities." 19 May 2006. BusinessWeek. 19 Oct. 2008 .