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Commit 88814082 authored by Lekang Chen's avatar Lekang Chen
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.catalog ul {
color: var(--orange);
line-height: 1.4;
}
.catalog li {
margin-bottom: 1rem;
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whiteboard for improving teamwork. This attempt can help future teams collaborate more efficiently remotely and run
their project more smoothly.
<img src="https://static.igem.wiki/teams/4134/wiki/wiki/contribution/boardmix.png"
alt="Using Boardmix to discuss our safety form" />
alt="Using BoardMix to discuss our safety form" />
</p>
<h2 id="build">A platform for the spread of cutting-edge knowledge</h2>
<p>We have already established long-term cooperation with the Postgraduates Voluntary Teaching Corps of Nanjing University so that not only the current members of our team but also the next generation of Nanjing-China and other willing teams can offer voluntary teaching courses to the children in areas lacking high-quality educational resources. After the voluntary teaching, students, as well as teachers, are very satisfied with the courses and the interest in synthetic biology has been successfully cultivated in children's hearts. During this year, we held several lectures for audiences with varied educational backgrounds with different partners. This means we've built a brand-new platform for the collaboration of Postgraduates Voluntary Teaching Corps with any other group even more than the iGEM teams which is willing to get involved. This platform can provide everyone in underdeveloped areas with constant access to frontier knowledge and fuel the interest of the new generation in synthetic biology and fields even more than synthetic biology. More importantly, such a platform will help to promote educational equity, give each child more opportunities to contact the outside world and establish lofty ideals instead of being buried in a mediocre life. This is also one of the most important values of science education. See more in our <a href="{{url_for("pages",page="education")}}">Education</a> page.</p>
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{% block header %}
<style>
body{
background-color: #f59781;
background-color: #f59a82;
}
</style>
{% endblock %}
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<img src="https://static.igem.wiki/teams/4134/wiki/wiki/model/mfc.jpg" alt="This model shows the effect of the assumed parameter change on the output voltage after adding silver nanoparticles" /></p>
<h2 id="futureexperiments">Future Experiments</h2>
<p>Based on the model and our interviews with the sewage treatment plant, we plan to build a closed full-cell device. We plan to use rGO as the anode of the battery and \(\ce{Fe(SCN)3}\) as the cathode of the cell. We will perform three experiments using a full-cell device.</p>
<h3 id="experiment1">Experiment 1</h3>
<h3 id="experiment1">Experiment 1: Full Cell</h3>
<p>Test the voltage and current densities achievable by our engineered Shewanella using a full-cell device. To apply our device in an actual sewage treatment plant, we plan to measure the voltage and current density of the microbial fuel cell. The test results can help us design downstream circuit components to charge the appropriate battery. Once the hardware is complete, we can test the stability during the device's operation, proving that our device will work for a long time.</p>
<h3 id="experiment2">Experiment 2</h3>
<h3 id="experiment2">Experiment 2: Sewage</h3>
<p>Use sewage or simulated sewage to test the performance of the MFC. In the experiments, we used lactic acid as the single substrate. However, the composition of sewage substrates in the real world is very complex. We plan to use sewage or simulated sewage to demonstrate the ability of our design to increase power generation in complex environments.</p>
<h3 id="experiment3">Experiment 3</h3>
<h3 id="experiment3">Experiment 3: Silver</h3>
<p>Use different silver ion concentrations to test the safety of the device. Although our engineered <em>Shewanella</em> works in a closed device in an anaerobic environment, we still need to consider the leakage of silver ions/AgNPs or engineered bacteria. We plan to use lower concentrations of silver ions for the biosynthesis of silver nanoparticles by <em>Shewanella</em>. If lower concentrations of silver ions still achieve better results, we can use lower concentrations of silver ions to further improve the safety of our device. At the same time, the use of low-concentration silver ions can reduce the treatment cost after the device is decommissioned.</p>
<h3 id="devicedesign">Device Design</h3>
<p>The device prototype we designed consists of five parts: MFC, MCU, power management, sensor, and battery. MFCs are responsible for converting chemical energy in organic matter into electrical energy. Power management can stabilize the voltage output by the MFC within the power supply range of the battery, keeping the current and voltage stable. It can also supply power to the MCU. The battery stores the electrical energy output by the MFC. The MCU collects information such as temperature, pH, current, and voltage of the MFC cathode, anode, or power management by sensors. The MCU can report the collected data to the users and control the input of substrates to the MFC.
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