<?xml version='1.0' encoding='utf-8'?>
<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:contributor>F. H. Chapelle</dc:contributor>
  <dc:creator>P. M. Bradley</dc:creator>
  <dc:date>2000</dc:date>
  <dc:description>&lt;div class="hlFld-Abstract"&gt;&lt;div id="abstractBox"&gt;&lt;p class="articleBody_abstractText"&gt;Under methanogenic conditions, microbial degradation of [1,2-&lt;sup&gt;14&lt;/sup&gt;C]vinyl chloride (VC) resulted in significant (14 ± 3% maximum recovery) but transient recovery of radioactivity as&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;sup&gt;14&lt;/sup&gt;C-acetate. Subsequently,&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;sup&gt;14&lt;/sup&gt;C-acetate was degraded to&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;sup&gt;14&lt;/sup&gt;CH&lt;sub&gt;4&lt;/sub&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;and&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;sup&gt;14&lt;/sup&gt;CO&lt;sub&gt;2&lt;/sub&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;(18 ± 2% and 54 ± 3% final recoveries, respectively). In contrast, under 2-bromoethanesulfonic acid (BES) amended conditions,&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;sup&gt;14&lt;/sup&gt;C-acetate recovery remained high (27 ± 1% maximum recovery) throughout the study, no&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;sup&gt;14&lt;/sup&gt;CH&lt;sub&gt;4&lt;/sub&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;was produced, and the final recovery of&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;sup&gt;14&lt;/sup&gt;CO&lt;sub&gt;2&lt;/sub&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;was only 35 ± 4%. These results demonstrate that oxidative acetogenesis may be an important mechanism for anaerobic VC biodegradation. Moreover, these results (1) demonstrate that microbial degradation of VC to CH&lt;sub&gt;4&lt;/sub&gt;and CO&lt;sub&gt;2&lt;/sub&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;may involve oxidative acetogenesis followed by acetotrophic methanogenesis and (2) suggest that oxidative acetogenesis may be the initial step in the net oxidation of VC to CO&lt;sub&gt;2&lt;/sub&gt;reported previously under Fe(III)-reducing, SO&lt;sub&gt;4&lt;/sub&gt;-reducing, and humic acids-reducing conditions.&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.1021/es991371m</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>ACS</dc:publisher>
  <dc:title>Acetogenic microbial degradation of vinyl chloride</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>