39 lines
No EOL
4.6 KiB
HTML
39 lines
No EOL
4.6 KiB
HTML
<!doctype html><html class=no-js lang=en><head><meta charset=utf-8><meta http-equiv=x-ua-compatible content="ie=edge"><meta name=viewport content="width=device-width,initial-scale=1"><title>Measuring diffusion of protons in polyvinyalginate - MillironX</title>
|
||
<link href=/styles/millironx.min.css rel=stylesheet></head><body><header><object data=/graphics/millironx.svg>
|
||
<img src=/graphics/millironx.svg alt="Milliron X"></object><h1 class=font-small-caps>Milliron X</h1></header><div class=row><aside><nav><a href=/><span class="fa-container fa-fw"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 576 512"><path d="M511.8 287.6H576V240L288.4.0.0 240v47.6H64.1V512H224V352H352V512H512.8l-1-224.4z"/></svg></span>
|
||
Home
|
||
</a><a href=/contact/><span class="fa-container fa-fw"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 576 512"><path d="M224 0H0V512H384V427l-1.7 1.7-120.1 17.2-11.7 1.9-11.6 1.9-5.3-10.5L222.1 416H209.9l-11.6 23.2-4.4 8.8H184h-8-11.9l-3.4-11.4L144 381l-16.7 55.6L123.9 448H112 80 64V416H80h20.1l20.6-68.6 3.4-11.4H136h16 11.9l3.4 11.4 15.4 51.4 3-5.9 4.4-8.8H2e2h32 9.9l4.4 8.8 7.2 14.5 13.5-94 117-117V160H224V0zm32 0V128H384L256 0zM505 119.8l-41.3 41.3 71 71L576 190.8l-71-71zm-63.9 63.9L299.9 325 288 407.9 370.9 396 512.1 254.7l-71-71z"/></svg></span>
|
||
Contact
|
||
</a><a href=/academia/><span class="fa-container fa-fw"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M0 144 256 0 512 144v48H0V144zM0 512V464l64-48V224h64V416h40V224h64V416h48V224h64V416h40V224h64V416l64 48v48H0zM256 144a32 32 0 100-64 32 32 0 100 64z"/></svg></span>
|
||
Academia
|
||
</a><a href=/videos/><span class="fa-container fa-fw"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 576 512"><path d="M384 64H0V448H384V64zM576 448V64L416 174.9V337.1L576 448z"/></svg></span>
|
||
Videos
|
||
</a><a href=/websites/><span class="fa-container fa-fw"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M0 32H512V480H0V32zm160 72v48H448V104H160zm-32-8H64v64h64V96z"/></svg></span>
|
||
Websites</a></nav></aside><main><section><h5>Idaho INBRE Summer Research Conference: Moscow, Idaho</h5><h2>Measuring diffusion of protons in polyvinyalginate</h2><h3><small><a href=/people/thomas-a.-christensen-ii/ class="card-link
|
||
bolder"><span class="fa-container fa-fw"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512"><path d="M224 256A128 128 0 10224 0a128 128 0 100 256zM448 512 384 304H64L0 512H448z"/></svg></span>
|
||
Thomas A. Christensen II</a>
|
||
<a href=/people/jonathan-counts/ class=card-link><span class="fa-container fa-fw"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512"><path d="M224 256A128 128 0 10224 0a128 128 0 100 256zM448 512 384 304H64L0 512H448z"/></svg></span>
|
||
Jonathan Counts</a>
|
||
<a href=/people/james-g.-moberly/ class=card-link><span class="fa-container fa-fw"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512"><path d="M224 256A128 128 0 10224 0a128 128 0 100 256zM448 512 384 304H64L0 512H448z"/></svg></span>
|
||
James G. Moberly</a></small></h3><h4>July 31, 2018</h4><p>Trichloroethylene (TCE) is a toxic and carcinogenic contaminant that presents
|
||
unique challenges for cleanup because of its density and volatility. Use of
|
||
microorganisms may be a promising remediation method, however metabolism of TCE
|
||
results in acid buildup, which consequently impedes the ability of
|
||
microorganisms to perform this remediation. Polyvinylalginate (PVA) shows
|
||
promise as a useful shield for microorganisms carrying out bioremediation of TCE
|
||
by surrounding them in a protective biofilm-like layer, however, key information
|
||
is missing which relates diffusion of TCE or its metabolic products through PVA.
|
||
To measure the effective diffusion coefficient of H<sup>+</sup>
|
||
ions through
|
||
a PVA membrane cross-linked with boric acid and calcium ions, we used a modified
|
||
diaphragm cell. We found the effective diffusion coefficient to be 1.40 ×
|
||
10<sup>-5</sup>
|
||
± 1.91 × 10<sup>-6</sup>
|
||
cm<sup>2</sup>
|
||
s, a nearly
|
||
seven-fold decrease in diffusivity compared to protons in water, with an
|
||
unexpected significant but as of yet unquantified adsorption capacity. These
|
||
results suggest that polyvinylalginate is effective in slowing diffusion of
|
||
protons and buffering these acids produced by trichloroethylene metabolism, and
|
||
remains suitable for encapsulation of microorganisms involved in bioremediation.</p></section></main></div><footer><img src=/graphics/brandedbull.min.svg height=95rem><p>© 2018 Thomas A. Christensen II<br>Licensed
|
||
<a rel=license href=http://creativecommons.org/licenses/by/4.0/>CC-BY 4.0</a><br>Built with <a href=https://gohugo.io>Hugo</a> v0.126.1</p></footer><script data-goatcounter=https://millironx.goatcounter.com/count async src=//gc.zgo.at/count.js></script></body></html> |