Item talk:Q255180
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{
"USGS Publications Warehouse": { "@context": "https://schema.org", "@type": "Article", "additionalType": "Journal Article", "name": "Kinetics of DCE and VC mineralization under methanogenic and Fe(III)- reducing conditions", "identifier": [ { "@type": "PropertyValue", "propertyID": "USGS Publications Warehouse IndexID", "value": "70019585", "url": "https://pubs.usgs.gov/publication/70019585" }, { "@type": "PropertyValue", "propertyID": "USGS Publications Warehouse Internal ID", "value": 70019585 }, { "@type": "PropertyValue", "propertyID": "DOI", "value": "10.1021/es970110e", "url": "https://doi.org/10.1021/es970110e" }, { "@type": "PropertyValue", "propertyID": "ISSN", "value": "0013936X" } ], "journal": { "@type": "Periodical", "name": "Environmental Science & Technology", "volumeNumber": "31", "issueNumber": "9" }, "inLanguage": "en", "isPartOf": [ { "@type": "CreativeWorkSeries", "name": "Environmental Science & Technology" } ], "datePublished": "1997", "dateModified": "2019-02-13", "abstract": "The kinetics of anaerobic mineralization of DCE and VC under methanogenic and Fe(III)-reducing conditions as a function of dissolved contaminant concentration were evaluated. Microorganisms indigenous to creek bed sedi ments, where groundwater contaminated with chlorinated ethenes continuously discharges, demonstrated significant mineralization of DCE and VC under methanogenic and Fe(III)-reducing conditions. Over 37 days, the recovery of [1,2-14C]VC radioactivity as\u00a014CO2\u00a0ranged from 5% to 44% and from 8% to 100% under methanogenic and Fe(III)-reducing conditions, respectively. The recovery of [1,2-14C]DCE radioactivity as\u00a014CO2ranged from 4% to 14% and did not vary significantly between methanogenic and Fe(III)-reducing conditions. VC mineralization was described by Michaelis\u2212Menten kinetics. Under methanogenic condi tions,\u00a0Vmax\u00a0was 0.19 \u00b1 0.01 \u03bcmol L-1\u00a0d-1\u00a0and the half-saturation constant,\u00a0km, was 7.6 \u00b1 1.7 \u03bcM. Under Fe(III)-reducing conditions,\u00a0Vmax\u00a0was 0.76 \u00b1 0.07 \u03bcmol L-1\u00a0d-1\u00a0and\u00a0km\u00a0was 1.3 \u00b1 0.5 \u03bcM. In contrast, DCE mineralization could be described by first-order kinetics. The first-order degradation rate constant for DCE mineralization was 0.6 \u00b1 0.2% d-1\u00a0under methanogenic and Fe(III)-reducing conditions. The results indicate that the kinetics of chlorinated ethene mineralization can vary significantly with the specific contaminant and the predominant redox conditions under which mineralization occurs.", "description": "5 p.", "publisher": { "@type": "Organization", "name": "ACS" }, "author": [ { "@type": "Person", "name": "Bradley, P. M.", "givenName": "P. M.", "familyName": "Bradley", "identifier": { "@type": "PropertyValue", "propertyID": "ORCID", "value": "0000-0001-7522-8606", "url": "https://orcid.org/0000-0001-7522-8606" } }, { "@type": "Person", "name": "Chapelle, F. H.", "givenName": "F. H.", "familyName": "Chapelle" } ], "funder": [ { "@type": "Organization", "name": "Toxic Substances Hydrology Program", "url": null } ] }, "OpenAlex": { "_id": "https://openalex.org/w2011728122", "abstract_inverted_index": { "The": [ 0, 76, 155, 173 ], "kinetics": [ 1, 178 ], "of": [ 2, 5, 17, 41, 55, 78, 179 ], "anaerobic": [ 3 ], "mineralization": [ 4, 40, 99, 148, 162, 182, 197 ], "DCE": [ 6, 42, 147, 161 ], "and": [ 7, 11, 43, 47, 65, 72, 88, 95, 117, 138, 170, 190 ], "VC": [ 8, 44, 98 ], "under": [ 9, 45, 70, 168, 195 ], "methanogenic": [ 10, 46, 71, 94, 106, 169 ], "Fe(III)-reducing": [ 12, 48, 73, 96, 128, 171 ], "conditions": [ 13, 194 ], "as": [ 14, 58, 81 ], "a": [ 15 ], "function": [ 16 ], "dissolved": [ 18 ], "contaminant": [ 19, 189 ], "concentration": [ 20 ], "were": [ 21 ], "evaluated.": [ 22 ], "Microorganisms": [ 23 ], "indigenous": [ 24 ], "to": [ 25, 63, 68, 86 ], "creek": [ 26 ], "bed": [ 27 ], "sedi": [ 28 ], "ments,": [ 29 ], "where": [ 30 ], "groundwater": [ 31 ], "contaminated": [ 32 ], "with": [ 33, 186 ], "chlorinated": [ 34, 180 ], "ethenes": [ 35 ], "continuously": [ 36 ], "discharges,": [ 37 ], "demonstrated": [ 38 ], "significant": [ 39 ], "conditions.": [ 49, 97, 172 ], "Over": [ 50 ], "37": [ 51 ], "days,": [ 52 ], "the": [ 53, 118, 177, 187, 191 ], "recovery": [ 54, 77 ], "[1,2-14C]VC": [ 56 ], "radioactivity": [ 57, 80 ], "14CO2": [ 59, 82 ], "ranged": [ 60, 83 ], "from": [ 61, 66, 84 ], "5%": [ 62 ], "44%": [ 64 ], "8%": [ 67 ], "100%": [ 69 ], "conditions,": [ 74, 129 ], "respectively.": [ 75 ], "[1,2-14C]DCE": [ 79 ], "4%": [ 85 ], "14%": [ 87 ], "did": [ 89 ], "not": [ 90 ], "vary": [ 91, 184 ], "significantly": [ 92, 185 ], "between": [ 93 ], "was": [ 100, 110, 122, 131, 140, 163 ], "described": [ 101, 151 ], "by": [ 102, 152 ], "Michaelis\u2212Menten": [ 103 ], "kinetics.": [ 104, 154 ], "Under": [ 105, 127 ], "condi": [ 107 ], "tions,": [ 108 ], "Vmax": [ 109, 130 ], "0.19": [ 111 ], "\u00b1": [ 112, 124, 133, 142, 165 ], "0.01": [ 113 ], "\u03bcmol": [ 114, 135 ], "L-1": [ 115, 136 ], "d-1": [ 116, 137, 167 ], "half-saturation": [ 119 ], "constant,": [ 120 ], "km,": [ 121 ], "7.6": [ 123 ], "1.7": [ 125 ], "\u03bcM.": [ 126, 144 ], "0.76": [ 132 ], "0.07": [ 134 ], "km": [ 139 ], "1.3": [ 141 ], "0.5": [ 143 ], "In": [ 145 ], "contrast,": [ 146 ], "could": [ 149 ], "be": [ 150 ], "first-order": [ 153, 156 ], "degradation": [ 157 ], "rate": [ 158 ], "constant": [ 159 ], "for": [ 160 ], "0.6": [ 164 ], "0.2%": [ 166 ], "results": [ 174 ], "indicate": [ 175 ], "that": [ 176 ], "ethene": [ 181 ], "can": [ 183 ], "specific": [ 188 ], "predominant": [ 192 ], "redox": [ 193 ], "which": [ 196 ], "occurs.": [ 198 ] }, "apc_list": null, "apc_paid": null, "authorships": [ { "author_position": "first", "author": { "id": "https://openalex.org/A5075056636", "display_name": "Paul M. 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