{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,17]],"date-time":"2026-08-17T14:32:09Z","timestamp":1786977129169,"version":"build-2736575974"},"reference-count":28,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2017,12,6]],"date-time":"2017-12-06T00:00:00Z","timestamp":1512518400000},"content-version":"am","delay-in-days":358,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#am"},{"start":{"date-parts":[[2016,12,13]],"date-time":"2016-12-13T00:00:00Z","timestamp":1481587200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/100000001","name":"National Science Foundation","doi-asserted-by":"publisher","award":["DGE\u20101148903"],"award-info":[{"award-number":["DGE\u20101148903"]}],"id":[{"id":"10.13039\/100000001","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Biotech &amp;amp; Bioengineering"],"published-print":{"date-parts":[[2017,5]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:label\/>\n                    <jats:p>\n                      Bioelectrochemical systems (BESs) may be used to upgrade anaerobic digester biogas by directly converting CO\n                      <jats:sub>2<\/jats:sub>\n                      to CH\n                      <jats:sub>4<\/jats:sub>\n                      . The objective of this study was to evaluate gas (N\n                      <jats:sub>2<\/jats:sub>\n                      , CO\n                      <jats:sub>2<\/jats:sub>\n                      , CH\n                      <jats:sub>4<\/jats:sub>\n                      , and H\n                      <jats:sub>2<\/jats:sub>\n                      ) and carbon transport within a methanogenic BES. Four BES configurations were evaluated: abiotic anode with abiotic cathode (AAn\u2010ACa), bioanode with abiotic cathode (BAn\u2010ACa), abiotic anode with biocathode (AAn\u2010BCa), and bioanode with biocathode (BAn\u2010BCa). Transport of N\n                      <jats:sub>2<\/jats:sub>\n                      , a gas commonly used for flushing anoxic systems, out of the anode headspace ranged from 3.7 to 6.2\u2009L\/d\u2010atm\u2010m\n                      <jats:sup>2<\/jats:sup>\n                      , normalized to the proton exchange membrane (PEM) surface area and net driving pressure (NDP). CO\n                      <jats:sub>2<\/jats:sub>\n                      was transported from the cathode to the anode headspace at rates from 3.7 to 5.4\u2009L\/d\u2010atm\u2010m\n                      <jats:sup>2<\/jats:sup>\n                      . The flux of H\n                      <jats:sub>2<\/jats:sub>\n                      from cathode to anode headspace was 48% greater when the system had a biocathode (AAn\u2010BCa) than when H\n                      <jats:sub>2<\/jats:sub>\n                      was produced at an abiotic cathode (BAn\u2010ACa), even though the abiotic cathode headspace had 75% more H\n                      <jats:sub>2<\/jats:sub>\n                      than the AAn\u2010BCa biocathode at the end of 1 day. A 7\u2010day carbon balance of a batch\u2010fed BAn\u2010BCa BES showed transient microbial carbon storage and a net transport of carbon from anode to cathode. After a 7\u2010day batch incubation, the CH\n                      <jats:sub>4<\/jats:sub>\n                      production in the biocathode was 27% greater on a molar basis than the initial CO\n                      <jats:sub>2<\/jats:sub>\n                      supplied to the biocathode headspace, indicating conversion of CO\n                      <jats:sub>2<\/jats:sub>\n                      produced in the anode. This research expands the current understanding of methanogenic BES operation, which may be used in improving the assessment of BES performance and\/or in the development of alternative BES designs and mathematical models. Biotechnol. Bioeng. 2017;114: 961\u2013969. \u00a9 2016 Wiley Periodicals, Inc.\n                    <\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/bit.26230","type":"journal-article","created":{"date-parts":[[2016,12,6]],"date-time":"2016-12-06T05:53:07Z","timestamp":1481003587000},"page":"961-969","source":"Crossref","is-referenced-by-count":14,"title":["Evaluation of gas and carbon transport in a methanogenic bioelectrochemical system (BES)"],"prefix":"10.1002","volume":"114","author":[{"given":"Christy M.","family":"Dykstra","sequence":"first","affiliation":[{"name":"School of Civil and Environmental Engineering Georgia Institute of Technology 311 Ferst Drive Atlanta Georgia 30332\u20100512"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Spyros G.","family":"Pavlostathis","sequence":"additional","affiliation":[{"name":"School of Civil and Environmental Engineering Georgia Institute of Technology 311 Ferst Drive Atlanta Georgia 30332\u20100512"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2016,12,13]]},"reference":[{"key":"e_1_2_6_2_1","unstructured":"American Public Health Association (APHA).2012. 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