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<!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>James G. Moberly - MillironX</title><link href="/styles/mix-twbs.min.css" rel=stylesheet></head><body><div class=container-fluid><div class="row wrapper min-vh-100 flex-column flex-sm-row"><aside class="col-12 col-md-3 p-0 bg-dark flex-shrink-1"><nav class="navbar navbar-expand-md navbar-dark bg-dark align-items-start flex-md-column flex-row"><div class=container-fluid><a class="navbar-brand d-block d-md-none" href=#><object class="d-inline-block align-text-top" width=80 height=24 style=filter:invert(100%) data=/graphics/millironx.svg>
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&emsp; Milliron X</h1></header></div><div class=blurred-container><div class=motto><h1 id=motto>James G. Moberly</h1></div><div class=img-src style=background-image:url(/images/saddles.jpg)></div><div class="img-src blur" style=background-image:url(/images/saddles_hu1143faa57f5b1acd11a97eda612b56ee_388130_filter_6742909828560968691.jpg)></div></div><br><section class="container-fluid list-main"><div class="container px-5"></div><div class=row data-masonry='{"percentPosition": true}'><div class="col-xl-6 mb-4"><div class=card><div class=category-button><a href=/categories/paper/ class="btn btn-dark btn-sm" data-bs-toggle=tooltip title=Paper><i class="fad fa-book fa-fw"></i></a></div><div class=card-body><a href=https://doi.org/10.1021/acsestengg.2c00107><h3 class=card-title>Investigation of Hydronium Diffusion in Poly(vinyl alcohol) Hydrogels: A Critical First Step to Describe Acid Transport for Encapsulated Bioremediation</h3></a><div>02 Sep 2022</div><a href=/people/carson-j.-silsby/ class="icon-link card-link"><i class="fad fa-user"></i> Carson J. Silsby</a>
<a href=/people/jonathan-r.-counts/ class="icon-link card-link"><i class="fad fa-user"></i> Jonathan R. Counts</a>
<a href=/people/thomas-a.-christensen-ii/ class="icon-link card-link
fw-bolder"><i class="fad fa-user"></i> Thomas A. Christensen II</a>
<a href=/people/mark-f.-roll/ class="icon-link card-link"><i class="fad fa-user"></i> Mark F. Roll</a>
<a href=/people/kristopher-v.-waynant/ class="icon-link card-link"><i class="fad fa-user"></i> Kristopher V. Waynant</a>
<a href=/people/james-g.-moberly/ class="icon-link card-link"><i class="fad fa-user"></i> James G. Moberly</a><p class=card-text>Bioremediation of chlorinated aliphatic hydrocarbon-contaminated aquifers can be hindered by high contaminant concentrations and acids generated during remediation. Encapsulating microbes in hydrogels may provide a protective, tunable environment from inhibiting compounds; however, current approaches to formulate successful encapsulated systems rely on trial and error rather than engineering approaches because fundamental information on mass-transfer coefficients is lacking. To address this knowledge gap, hydronium ion mass-transfer rates through two commonly used hydrogel materials, poly(vinyl alcohol) and alginic acid, under two solidification methods (chemical and cryogenic) were measured.
<strong><small><a href=https://doi.org/10.1021/acsestengg.2c00107>Read&nbsp;more &#187;</a></small></strong></p></div><div class=card-footer><a href=/tags/diffusion/ class="icon-link card-link"><i class="fad fa-tag"></i> diffusion</a>
<a href=/tags/hydrogels/ class="icon-link card-link"><i class="fad fa-tag"></i> hydrogels</a>
<a href=/tags/ionic-strength/ class="icon-link card-link"><i class="fad fa-tag"></i> ionic strength</a>
<a href=/tags/polymers/ class="icon-link card-link"><i class="fad fa-tag"></i> polymers</a>
<a href=/tags/transport-properties/ class="icon-link card-link"><i class="fad fa-tag"></i> transport properties</a></div></div></div><div class="col-xl-6 mb-4"><div class=card><div class=category-button><a href=/categories/poster/ class="btn btn-dark btn-sm" data-bs-toggle=tooltip title=Poster><i class="fad fa-presentation fa-fw"></i></a></div><div class=card-body><a href=/academia/pva-aiche/measuring_diffusion_of_trichloroethylene.pdf><h3 class=card-title>Measuring Diffusion of Trichlorethylene Breakdown Products in Polyvinylalginate</h3></a><div>29 Oct 2018</div><a href=/people/thomas-a.-christensen-ii/ class="icon-link card-link
fw-bolder"><i class="fad fa-user"></i> Thomas A. Christensen II</a>
<a href=/people/samuel-r.-wolfe/ class="icon-link card-link"><i class="fad fa-user"></i> Samuel R. Wolfe</a>
<a href=/people/jonathan-counts/ class="icon-link card-link"><i class="fad fa-user"></i> Jonathan Counts</a>
<a href=/people/mark-f.-roll/ class="icon-link card-link"><i class="fad fa-user"></i> Mark F. Roll</a>
<a href=/people/kristopher-v.-waynant/ class="icon-link card-link"><i class="fad fa-user"></i> Kristopher V. Waynant</a>
<a href=/people/james-g.-moberly/ class="icon-link card-link"><i class="fad fa-user"></i> James G. Moberly</a><p class=card-text>Trichloroethylene (TCE), a toxic and carcinogenic contaminant, presents unique challenges for cleanup because of its water solubility, density, and volatility. Bioremediation of TCE is a promising cleanup method; however, metabolism of TCE results in acid generation that inhibits remediating microorganisms. Calcium alginate(CA)-polyvinylalcohol (PVA) hydrogels show promise for protecting remediating microbes, however diffusion of TCE or its byproducts through these polymers is unknown. To measure the effective diffusion coefficient of TCE and byproducts through hydrogel membranes, we used a modified diaphragm cell.
<strong><small><a href=/academia/pva-aiche/measuring_diffusion_of_trichloroethylene.pdf>Read&nbsp;more &#187;</a></small></strong></p></div><div class=card-footer><a href=/tags/bioremediation/ class="icon-link card-link"><i class="fad fa-tag"></i> bioremediation</a>
<a href=/tags/polyoxometalate/ class="icon-link card-link"><i class="fad fa-tag"></i> polyoxometalate</a>
<a href=/tags/hydrogel-polymers/ class="icon-link card-link"><i class="fad fa-tag"></i> hydrogel polymers</a>
<a href=/tags/proton-transport/ class="icon-link card-link"><i class="fad fa-tag"></i> proton transport</a>
<a href=/tags/chemical-engineering/ class="icon-link card-link"><i class="fad fa-tag"></i> chemical engineering</a></div></div></div><div class="col-xl-6 mb-4"><div class=card><div class=category-button><a href=/categories/poster/ class="btn btn-dark btn-sm" data-bs-toggle=tooltip title=Poster><i class="fad fa-presentation fa-fw"></i></a></div><div class=card-body><a href=/academia/pva-inbre/><h3 class=card-title>Measuring diffusion of protons in polyvinyalginate</h3></a><div>31 Jul 2018</div><a href=/people/thomas-a.-christensen-ii/ class="icon-link card-link
fw-bolder"><i class="fad fa-user"></i> Thomas A. Christensen II</a>
<a href=/people/jonathan-counts/ class="icon-link card-link"><i class="fad fa-user"></i> Jonathan Counts</a>
<a href=/people/james-g.-moberly/ class="icon-link card-link"><i class="fad fa-user"></i> James G. Moberly</a><p class=card-text>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.
<strong><small><a href=/academia/pva-inbre/>Read&nbsp;more &#187;</a></small></strong></p></div><div class=card-footer></div></div></div></div></section><footer class=fixed-bottom><div class="container-fluid footer-contents"><div class="row justify-content-between"><div class="col-3 align-self-center"><img src=/graphics/brandedbull.min.svg height=95rem></div><div class="col-3 align-self-center"><div class="btn-group float-end" role=group aria-label="Other Milliron X sites"><a class="btn btn-outline-primary btn-sm" href=https://video.millironx.com/ data-bs-toggle=tooltip title="Video (Peertube)"><i class="fax fa-peertube fa-fw"></i></a>
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