Team:SCAU-China

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                <div class="ti"><a href="#">Abstract</a></div>
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<h1 >WELCOME TO iGEM 2014! </h1>
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                        <p style="margin-left:390px">In view of rapid depletion of traditional energy resources and increasing demand of desalination of seawater for fresh water, we aimed to enhance the electrogenic capacity of microbial fuel cells (MFC) by genetically modified bacteria and optimize the traditional microbial desalination cells (MDC) device.</p>
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<p>Your team has been approved and you are ready to start the iGEM season!
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<br>On this page you can document your project, introduce your team members, document your progress <br> and share your iGEM experience with the rest of the world! </p>
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<p style="color:#E7E7E7"> <a href="https://2014.igem.org/wiki/index.php?title=Team:SCAU-China&action=edit"style="color:#FFFFFF"> Click here  to edit this page!</a> </p>
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                <div class="ti"><a href="#">MFC/MDC Devices</a></div>
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                <div class="ti"><a href="#">Meet Our Team</a></div>
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                    <p>Although members of SCAU-China come from different grades and majors with diverse specialties and interests, we all contribute to accomplish our project. IGEM competition gives us a great opportunity to develop our scientific skills and achieve specific goals in a limited time. We enjoy the ... <a href="https://2014.igem.org/Team:SCAU-China/Team">[more>>]</a></p>
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<p> Please be sure to keep these links, your audience will want to find your: </p>
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<li><a href="https://2014.igem.org/Team:SCAU-China">Home</a> </li>
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<br> In the meantime you can also view other team wikis for inspiration! Here are some very good examples</p>
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<li> <a href="https://2013.igem.org/Team:SDU-Denmark/"> 2013 SDU Denmark </a> </li>
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<li> <a href="https://2013.igem.org/Team:SYSU-China">2013 SYSU China</a> </li>
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<li> <a href="https://2013.igem.org/Team:Shenzhen_BGIC_ATCG"> 2013 Shenxhen BGIG ATCG </a></li>
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<li> <a href="https://2013.igem.org/Team:Colombia_Uniandes">2013 Colombia Unianades </a></li>
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<p>For traditional energy resources are depleting rapidly in modern sociecty, new clean energy resources are highly desired to sustain the human development. In addition, fresh water shortage is a critical globle issue, which increases the demand of desalination of seawater despite its high-costed and energy-consuming processes. Microbial Fuel Cell (MFC) is a novel electricity generator, producing electric current via metabolization of waste organic substrates by electrogenic microorganisms. However, low output of power density limits the application of MFC. So in this project, we combined MFC with a seawater desalination device as a Microbial Desalination Cell (MDC), and tried to increase the power density by genetic modification of the microbes in three ways. Firstly, we knocked out the  arcA gene of E.coli, which encodes a negative regulatory transcriptional factor of enzymes in TCA Circle and reduces the metabolic rate under anaerobic condition, leading to increase the electricity output. Secondly, we over-expressed nadE gene to boot up the NAD+(H) level in the cells facilitating the electron transferring rate. Finaly, we incorporated porin OprF, a membrane channels for electron exchange, into the nadE-overexpressed microbes. Moreover, we optimized the desalination effeciency by improving the size of chamber, the shape of water path and the electrode composition in a traditional MDC device. In short, our project aims to enhence the electrogenic capacity with our genetically modified bacteria, so the sewage treatment and desalination plant can work together to achieve a prospective sustainable eco-device.
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Latest revision as of 00:55, 18 October 2014

Abstract

In view of rapid depletion of traditional energy resources and increasing demand of desalination of seawater for fresh water, we aimed to enhance the electrogenic capacity of microbial fuel cells (MFC) by genetically modified bacteria and optimize the traditional microbial desalination cells (MDC) device.

MFC/MDC Devices
Human Practice
Meet Our Team

Although members of SCAU-China come from different grades and majors with diverse specialties and interests, we all contribute to accomplish our project. IGEM competition gives us a great opportunity to develop our scientific skills and achieve specific goals in a limited time. We enjoy the ... [more>>]


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