Extended Essay

1513 words - 7 pages

A microbial fuel cell (MFC) or biological fuel cell is a bio-electrochemical system that drives a current by using bacteria, and mimicking bacterial interactions found in nature. (2)
This assignment focuses on creating a microbiological fuel cell to create and obtain low voltage electricity by using six different sugars (Glucose, Fructose, Sucrose, Maltose, Galactose) and dry yeast as the micro-organism instead of bacteria.
To generate electrical energy through oxidation of biodegradable organic matter the microbiological cell uses a biochemical oxidation process. This happens in the presence of a biocatalyst. There are many advantages in using microbiological fuel cells. For example the most significant advantage is that they use organic materials to produce electricity. Another advantage is that highly regulated distributions are not required like the ones required by the hydrogen fuel cells. The microbiological cells also have higher conversion efficiency than the enzymatic cells and around 90% of the electrons are harvested by them from the bacterial electron transport system (3).
This topic has aroused my interest as now around the world, using fossil fuels to produce electricity is depleted and other alternatives are considered,which would create lower amount of greenhouse gases, and also because microbial fuel cells represent a clean and renewable energy source.I was also fascinated when we did chapter 9 of our syllabus which is oxidation and reduction I was so enthusiastic to see if there is another way of producing low voltage electricity without using electrodes and their salts/electrolytes. My aim in this experiment is to discover“How different types of sugar (Glucose,Fructose,Sucrose,Maltose and Galactose) used in a microbiological fuel cell affect the amount of voltage that is produced under control conditions, and after this has established,would connecting 3 fuel cells of the sugar that has displayed the best voltage, in series makes the voltage produced tripled?’’
Another aspect that has developedmy interest is the actual working chemistry behind these fuelcells.
Under aerobic conditions, the electrical energy which is present in the bonds of the organic compound are turned into electrical energy by the fuel cells into to energy that can be used, using the reactions of micro-organisms. How these cells work is, when the cell is prepared and set up the protons move in the direction towards the cathode section through the proton exchange membrane to complete the circuit. (4)When the equation taking place inside the fuel cell is considered, it can be expressed as: C6H12O6 (s)+ 6O2 (g)6CO2 (g)+6H2O (l)
When living things metabolize food to supply them with the necessary energy they draw the energy from the substances that are rich in electrons by disengaging them from carbohydrates after which, this reaction takes place.
In microbial catabolism, initially a carbohydrate or any other similar substrate is oxidised without oxygen,...

Find Another Essay On Extended Essay

'NOH THEATRE' - Drama Essay (Extended Written Response)

876 words - 4 pages "Traditional Japanese theatrical forms, although unique in nature, hold relevance for contemporary audiences and performers."...................The Essence of Noh Theatre...................The fundamental principle of Noh theatre can be illustrated using the Zen term 'Yugen' meaning 'beauty that is felt'.["Back to Beckett" (Internet)]. This old form of traditional Asian theatre is not a 'drama' as the word is used nowadays. It is closer to a

Extended Definition Essay over "Wutering Heights" by Emily Bronte's

706 words - 3 pages Pain, suffering usually localized physical suffering associated with bodily disorder or an acute mental or emotional distress, presents itself in many ways throughout Emily Bronte's story Wuthering Heights. When someone thinks of pain, they most often relate pain to the aftermath of a strenuous activity or situation, whether it be falling on the ground and experiencing pain, or by feeling sad for losing a special someone. While many of the

An Extended Version Of My Previous Essay About Sandra Schmirler

4007 words - 16 pages There are not very many people who have not heard of the Sandra Schmirler foursome. They are the first ever Olympic gold medallists for the sport of women's curling. The team consists of Marcia Gudereit, Joan McCusker, Jan Betker, and Sandra Schmirler. This team has accomplished a lot through their ten years curling together. They have been three time Scott Champions in 1993, 1994, and 1997, three time World Champions 1993, 1994,and 1997, and

Extended English Essay - "Lockie Leonard, Human Torpedo" and "Lex and Rory"

1426 words - 6 pages constructed. This essay will discuss the similarities of the issues between the two texts and how theses issues are constructed.Both narratives used relationships to play a great part, relationships such as friendships, family and love.Love played a large part between the two narratives. In Lex & Rory, Lex knew all about Dai and how she felt deep inside even more than Dai's father because Lex supported Dai's wish to go to arts school since that was

"The Life of Edgar Allen Poe" Assignment: Read an extended bibliography. Then write an essay in which you explor how the author's works are a reflection of his/her life.

1217 words - 5 pages "We struggle in vain." Poe's simple words from The Imp of the Perverse provide a perfect characterization of his life. Depressing and difficult, Edgar Allen Poe's life is evident in nearly all of his works. He suffered the loss of many loved ones as a child. While it was not diagnosable at the time, Poe quite possibly carried a psychological disorder such as bipolar or manic depression. His mental state, when coupled with the many deaths

This is a long extended essay on The Canadian Pacific Railway in the 1800's and its affect on the Political and Social growth of Canada during this time.

1270 words - 5 pages The Canadian Pacific Railway as a Catalyst for Political and Social Development in Canada during the 1800'sThe Canadian Pacific Railway was a crucial turning point in Canada's development because it was a Technological advancement, which forever changed Canada's position in the world. Although direct causes of the building and operation of the Canadian Pacific Railway would have been a stronger economy, both social and political benefits were

Extended Language Study

952 words - 4 pages Extended language studyMicah SolisIntroductionFor this language study, I have chosen to focus on the language used by people in text messaging. The reason why I chose to analyse the form of language in text messaging is because I enjoy texting a lot and I myself use this kind of language in texting. Text messaging refers to the exchange of brief written messages through mobile phones using the SMS (short messaging service). Text messaging is a

Extended Families

601 words - 2 pages Extended Families The evolution of extended families has progressed far from the early black and white episodes of The Addams Family, to the country life of The Waltons, and to the crazy lives of the family in Full House. It is clear that the changes in the portrayals of families provide audience members with a picture of families being more complex if nothing else (Bryant, 2001). Therefore, it is certain that each decade has surpassed

Explain how the neoclassical growth model can be extended to enhance our understanding of economic growth.

1858 words - 8 pages Explain how the neoclassical growth model can be extended to enhance our understanding of economic growth. INTRODUCTION AIM AND OBJECTIVE The aim of this essay is to clarify how the neoclassical growth model can be used to explain economic growth by taking into account two new inputs: Natural Resources (R) and Land (T) by substantiating it with relevant research. THE NEOCLASSICAL GROWTH MODEL According to the Neoclassical Solow Model

Who benefits and who loses when a common market for labour is extended to more countries

1948 words - 8 pages Who benefits and who loses when a common market for labour is extended to more countries? Explain your answer with reference to economic theory and to EU experience. Comment also on the future implications of the 2004 enlargement. Many people talk about the 'common market', by which they meant the European Economic Community in its early decades. Ths is a group of geographically close European nations among

Arabian tale extended

950 words - 4 pages "Scheherazade, tonight you promise to tell the story, the tale of the story teller", spoke the king. "I must hear this story, but this will be the last one, tell me, is it better then Ali Baba and the forty thieves?" "That I cannot say", she replied, "the stories worth is up to you". "Then get on with the story" the king irate king replied, "you are testing my patience, I want to here the story!" "well", started Scheherazade, "the story begins on

Similar Essays

Extended Essay

1886 words - 8 pages Spread of Information with the MediaQuestion: How has technology changed the dissemination of information?Media and technology shape the world we live in. It does not matter if the news being covered concerns us, we hear about it, sometimes even before the families and friends of the people involved in the story. Instead of local information staying local, it is broadcast all over the world. The media is very determined to make sure that you

Extended Essay

1648 words - 7 pages can other businesses use Google’s corporate strategy as a tool for attracting and retaining the best employees? INTRODUCTION In this essay, I will be assessing the aspects of Google’s corporate framework that have enabled it to be the best organisation to work for in recent years. Also, I will be evaluating each of these aspects using business and management theory and explaining how other businesses can use Google’s corporate strategy as a

Extended Essay

1086 words - 5 pages Some parents perceive and attribute success to how they’ve turned out and who they’ve become. In some cases, this can subtly hint to the student to drop out of school and care for family and siblings, and in other cases, it can be of encouragement to become successful, and this usually occurs in traditional and/or financially unstable families. Such teachings do not entail academic success, they are demonstrated, incorporated and stressed upon in

Political Correctness An Extended Essay

884 words - 4 pages - changes. Each of these new changes has affected the Australian workplace. New laws have been introduced and old laws have been altered according to society’s view of what is right and wrong. In turn, people have been hired and fired according to these changes. This essay will examine society’s changing views on political correctness and the effect of this on the Australian workplace during the 20th and 21st centuries.In 1902 the