Benefits of Microbial Fuel Cell

Benefits of microbic enkindle CellJessica JohnsonThis report focuses on microbic fuel prison stall development and how it gutter financial aid us overcome the energetic issues we confront rate of flowly, at the same eon providing a solution to treat ache water system more efficiently that the current ways we argon outlet on about doing so.The report aim is to show the benefits of utilizing microbic deliver Cell to get rid of the harsh activities we use now to progress up with the modernization of the area while at the same time destroying it, by using the very germs and bacterium that we are afraid of. The search has presents examples of how the use of microbial entrust help us in the retentive run once we are fitting to use this technology for galore(postnominal) more things on an even larger scaleThe existence of MFC has be to be beneficial in several ways currently narrow MatterAim of the reportFindingsIntroductionWe as human cosmoss acquire germs and b acteria as doing more harm than good, it satisfies us greatly to complete that we posterior utilize these germs and bacteria for a greater good. As the homo becomes more modernised it is imperative that we find other sources of naught that is disinvest, renewable and readily available at an affordable cost. Nature is the original microbic fuel cell as it has been converting ingrained substrates into energy (Adenosine triphosphate-ATP) since the beginning of time. microbic fuel cells, technology that is still in its developing stages which uses the biochemical activities of microorganisms as a resource to obtain enthalpy create electricity. Using MFCs are very beneficial to the environment as it helps in the reduction of contamination and cuts the cost of water treatment tremendously. Apart from universe an energy source, MFCs a wish well has the potential to provide sustainable power sources to isolated communities and desalinate water. configuration 1 A sincere microbia l send away cellTo intimately microbial fuel cell would seem like mostthing that is new to the world but the conceit of utilizing microbes to rear energy was brought to the world in the earlier 1900s by Professor M. C. Potter. Potter apply Escherichia coli and Saccharomyces to produce galvanising energy at the University of Durham (Mercer, 2012 and Potter, 1912). During his studies, Potter discovered the magnate to reign electricity from microorganisms and believed that this discovery would also benefit humans. Potter came up with the idea of creating a microbial fuel cell but lacked the knowledge of bacterial metabolism. Fast forward to the 1980s, M. J. Allen and H. Peters Bennetto further developed Potters idea along with the fill in providing affordable electricity to isolated areas, advanced technology and a better understanding electron transport chain this enabled Allen and Bennetto to create a basic design for the first microbial Fuel Cell. Most bacteria are made up of a lipid membrane that lacks the ability to conduct electricity, Allen and Bennetto discovered that by using electron mediators to transport electrons to the electrodes a greater electrical output created (Davis and Higson, 2007).Korean researcher B-H Kim discovered that some microorganism possessed electrochemical activity and did not require an electron mediator, this created a MFC that did not require mediators that were deadly and expensive.Recently more solicitude has been geared towards Microbial Fuel Cells callable to their environmentally friendly operating(a) conditions and the ability for them to utilise biodegradable substrates as fuelThe bacteria in a microbial fuel cell work by oxidising and step-down organic molecules to create energy. Figure 2 shows a Microbial Fuel Cell is split into two halves, an aerobic half containing a cathode that allows oxygen. The anaerobiotic side contains no oxygen, the anode acts as an electron receptor for the bacterial answ er. Separating some(prenominal) bedrooms is a proton exchange membrane or a flavour bridge, this prevents oxygen from entering the anaerobic side while simultaneously allowing hydrogen ions to pass through thus generating energy.Biocatalyst on the anaerobic side of the MFC oxidises organic substrates such as acetate in that locationfore producing electrons and protons (Antonopolou et. al 2010). The protons are attracted to the cathode by passing through the PEM while the electrons pass through the international spell (Rahimnejad et. al 2011). If oxygen enters the anode chamber this will prevent energy from being produced. (Rahimnejad et. al 2011) Types of Microbial Fuel CellsSingle bedroom MFCTwo house MFC A single chamber MFC, an anaerobic chamber that is linked to a porous cathode exposed to air and is separated by a PEM. Electrons are slayred to the cathode to complete the circuit. A single chamber MFC does not require recharging with an aerophilic media and aeration urinates the single chamber MFC more versatile and inexpensive to setup due to the absence of expensive membranes and cathodic chambers this creates flexible application in wastewater treatment and power generation.Figure 3 Single Chamber Microbial Fuel CellA double chambered MFC This reference of MFC contains an anodic and cathodic chamber connected by a PEM that mediates proton transfer from the anode to the cathode all while blocking the diffusion of oxygen into the anode, this system is mainly utilise for waste treatment and energy generation.Figure 4 diagram of a double chamber microbial fuel cellMicrobes substrateApplicationsEscherichia coliGlucose, SucroseMethylene blue desireed as a mediatorClostridium butyricumStarch, Glucose, Lactate, MolassesFermentative bacteriumProteus mirabilisGlucoseUses Thionin as mediator streptococcus lactisGlucoseMediator- Ferric chelate complexAeromonas hydrophilaAcetateMediator-less MFCTable 1 Microbes used in Microbial Fuel CellsWith the h elp of bacteria, Microbial Fuel Cells bottom of the inning convert chemical energy into electricityCurrent and futurity uses for Microbial fuel cellsThere are current applications in which Microbial Fuel cells are involved proves it to be an ever-evolving technology that uses bacteria to generate electricity from waste and create hydrogen. By tapping into this previously unharnessed source of power, clean, sustainable energy can be produced at low cost.Wastewater treatment Microbial Fuel Cells can be utilised to treat sewage water. MFCs can kill the bacteria found in sewage. It has been proven that MFC can reduce the amount of bacteria present in wastewater by 80% (Liu 2004). The waste water is initially pre-treated to remove the toxins and non- biodegradable materials from the water. This process is deemed intriguing as sewage water can be extremely toxic and polluted undergoes extensive treatment before MFC can be used to clean the water. High operational sustainability and low material costs are important characteristics for treating wastewater efficiently (Wang et. Al 2012)Sea Water desalination Microbial Fuel Cells are capable of producing energy but at the level where we can remove salt from large amount of water. However, there is potential for such process to be accomplished, by using an sufficient microbial fuel cell would make desalination of sea water possible without external electrical sources 5. Researchers tested the process of desalination by using a desalination microbial fuel cell. This is quite varied to the previous fuel cells mentioned as there is a third chamber present for the salt water in between the two electrodes. The process occurs with the positive and negative ions being attracted to the perspective electrodes as the proton electron membrane removes the salt from the water leaving it fresh. Scientists recorded that salt removal was up to 90% efficient however, higher removal efficiencies are needed to produce grade A drinking water 5.Figure 5 desalination microbial fuel cellsHydrogen Production With the help of a Microbial fuel cell, hydrogen can be produced. This process does require an external source of power to convert the bacteria into carbon dioxide and hydrogen fluid (JD Coates). Protons are released by the anodic reaction and pass through the PEM towards the cathode, this so combines with oxygen to form water. Hydrogen created from the electrons and protons produced by the microorganisms metabolizing in a MFC can be dangerous temperature wise (Liu et al).Power source-The whole idea bed the development and advancement of microbial fuel cell technologies was mainly base on providing cheap, accessible power to remote regions of in the world like villages in Africa, where majority of the population lives without the luxury of electricity (Doty, 2008). The use of home-cured Microbial Fuel Cell in Africa is very new, tests are being done with manure and dirt which would be beneficial for populati ons in hobnailed areas where this can be as affordable as possible. The electrical current produced by a simple homemade MFC is enough to recharge a cell phone battery, an important communication and lighting tool to verdant African communities. Efforts are being made to create MFCs that can be constructed from simple items that can be easily acquired. Materials such as soil, manure, papal bull wire, buckets, and graphite cloth are essential in creating a simple MFC.ConclusionMicrobial fuel cells have created a brilliant future for human beings and the planet we live on. The research done so faraway and with the applications that we have currently will help aid the reduction of our need to use fossil fuels and allow us to gain energy from wastes products, bacteria ridden water, enable us to use previously salted water to drink, develop with, this will greatly benefit 3rd world countries and areas plagued with drought and provide electricity to places that do not have any. Scie ntists are not able to utilise MFC technology to change the world in a mean solar day but are working on ways to help make a change bit by bit. Microbial fuel cells will never could produce enough electricity to make coal-fired power plants a thing of the past but however it does have to availability to help us utilise it less hence making the world a safer place to liveReferencesAntonopoulo, G., Bebelis, S., Lyberatos, G., Stamatelatou, K. 2010. Electricity generation from synthetic substrates and cheese whey using a two-chamber microbial fuel cell. Journal of Biochemical Engineering, 50, 10-15 (article)Coates J. D. Wrighton K. Microbial Fuel Cells Plug-in and Power-on Microbiology. Microbe Magazine, 2009. Accessed 9th demonstrate 2017.Dillow. C. Microbial Fuel Cell Cleans Wastewater, Desalinates Seawater, and Generates Power. commonplace scientific discipline. Online http//www.popsci.com/scitech/article/2009-08/microbial-fuel-cell-cleans-wastewater-desalinates-seawater-and-ge nerates-power, Sept. 26, 2009. Accessed 25th, Feb. 2017.Doty, C. For Africa, energy from dirt New York Times, Oct. 11, 2008. Accessed 8th, March 2017.MURI habitual Outreach How Does an MFC Work? MURI Microbial Fuel Cell Project. Internet http//mfc-muri.usc.edu/public/how.htm. 9th March 2017.Modified Microbial Fuel Cell Produces Electricity and Desalinates Water. FuelCellsWorks Leader in the Fuel Cell Industry. Internet http//fuelcellsworks.com/news/2009/08/09/modified-a-microbial-fuel-cell-produces-electricity-and-desalinates-water/, Aug. 9, 2009. Accessed19th, Feb. 2017.Junyeong et al. 2009.Floating-Type Microbial Fuel Cell (FT-MFC) for Treating Organic-Contaminated Water. Environmental Science and Technology 43.5 642-647.Zhuwei Du, Haoran Li, Tingyue Gu, A enounce of the art review on microbial fuel cells A promising technology for wastewater treatment and bioenergy, 10 May 2007, bioengineering Advances 25 (2007) 464-482, Available from http//132.235.17.4/Paper-gu/MFCreview.pd fRahimnejad, M. Najafpour, G. Ghoreyshi, A. A. 2011. Effects of Mass transfer on performance of microbial fuel cell intech, 5, 233-250Rahimnejad M, Najafpour G, Ghoreyshi A. A. 2011.The enhancement of a microbial fuel cell for electrical output using mediators and oxidising agents. Energy source., 33, 2239-2248Wang. Y. P. et. Al .2012. A microbial fuel cell-membrane bioreactor integrated system for cost-effective wastewater treatment. Applied energy, 98 230-235Liu H, Grot S, Logan BE, 2005c. Electrochemically assisted microbial production of hydrogen from acetate. Environmental Science Technology4317-20Picture referenceFigure 1 CCU Environmental Biotechnology Laboratory http//www.eq.ccu.edu.tw/lab/lab111/public_html/06_en.htmlFigure 2 Frederick High School 2014. http//2014hs.igem.org/ squadFHS_Frederick_MD/Microbial_Fuel_CellsFigure 3Figure 4Figure 5 Stubbs, J. 2014. Bio-cathodes powering towards clean water, energy and biomass production http//blogs.rsc.org/em/2014/01/23/bio-cathod es-powering-towards-clean-water-energy-and-biomass-production/