{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,16]],"date-time":"2026-09-16T00:23:28Z","timestamp":1789518208925,"version":"build-2803163510"},"reference-count":63,"publisher":"MDPI AG","issue":"15","license":[{"start":{"date-parts":[[2022,8,7]],"date-time":"2022-08-07T00:00:00Z","timestamp":1659830400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"European Union","award":["H2020-MSCA\u2013IF\u20132018\u2013SPFPs\u2013244209"],"award-info":[{"award-number":["H2020-MSCA\u2013IF\u20132018\u2013SPFPs\u2013244209"]}]},{"name":"European Union","award":["S2018\/EMT-4317"],"award-info":[{"award-number":["S2018\/EMT-4317"]}]},{"name":"European Union","award":["PID2019-105934RB-I00"],"award-info":[{"award-number":["PID2019-105934RB-I00"]}]},{"name":"Regional Government of Madrid","award":["H2020-MSCA\u2013IF\u20132018\u2013SPFPs\u2013244209"],"award-info":[{"award-number":["H2020-MSCA\u2013IF\u20132018\u2013SPFPs\u2013244209"]}]},{"name":"Regional Government of Madrid","award":["S2018\/EMT-4317"],"award-info":[{"award-number":["S2018\/EMT-4317"]}]},{"name":"Regional Government of Madrid","award":["PID2019-105934RB-I00"],"award-info":[{"award-number":["PID2019-105934RB-I00"]}]},{"name":"Spanish Ministry of Science and Innovation","award":["H2020-MSCA\u2013IF\u20132018\u2013SPFPs\u2013244209"],"award-info":[{"award-number":["H2020-MSCA\u2013IF\u20132018\u2013SPFPs\u2013244209"]}]},{"name":"Spanish Ministry of Science and Innovation","award":["S2018\/EMT-4317"],"award-info":[{"award-number":["S2018\/EMT-4317"]}]},{"name":"Spanish Ministry of Science and Innovation","award":["PID2019-105934RB-I00"],"award-info":[{"award-number":["PID2019-105934RB-I00"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJERPH"],"abstract":"<jats:p>Chlorinated organic compounds (COCs) are among the more toxic organic compounds frequently found in soil and groundwater. Among these, toxic and low-degradable chlorobenzenes are commonly found in the environment. In this work, an innovative process using hydrogen peroxide as the oxidant, ferrioxalate as the catalyst and a visible light-emitting diode lamp (Vis LED) were applied to successfully oxidize 124-trichlorobenzene (124-TCB) in a saturated aqueous solution of 124-TCB (28 mg L\u22121) at a neutral pH. The influence of a hydrogen peroxide (HP) concentration (61.5\u2013612 mg L\u22121), Fe3+ (Fe) dosage (3\u201310 mg L\u22121), and irradiation level (Rad) (I = 0.12 W cm\u22122 and I = 0.18 W cm\u22122) on 124-TCB conversion and dechlorination was studied. A D\u2013Optimal experimental design combined with response surface methodology (RSM) was implemented to maximize the quality of the information obtained. The ANOVA test was used to assess the significance of the model and its coefficients. The maximum pollutant conversion at 180 min (98.50%) was obtained with Fe = 7 mg L\u22121, HP = 305 mg L\u22121, and I = 0.12 W cm\u22122. The effect of two inorganic anions usually presents in real groundwater (bicarbonate and chloride, 600 mg L\u22121 each) was investigated under those optimized operating conditions. A slight reduction in the 124-TCB conversion after 180 min of reaction was noticed in the presence of bicarbonate (8.31%) and chloride (7.85%). Toxicity was studied with Microtox\u00ae (Azur Environmental, Carlsbad, CA, USA) bioassay, and a remarkable toxicity decrease was found in the treated samples, with the inhibition proportional to the remaining 124-TCB concentration. That means that nontoxic byproducts are produced in agreement with the high dechlorination degrees noticed.<\/jats:p>","DOI":"10.3390\/ijerph19159733","type":"journal-article","created":{"date-parts":[[2022,8,7]],"date-time":"2022-08-07T22:51:46Z","timestamp":1659912706000},"page":"9733","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Vis LED Photo-Fenton Degradation of 124-Trichlorobenzene at a Neutral pH Using Ferrioxalate as Catalyst"],"prefix":"10.3390","volume":"19","author":[{"given":"Leandro O.","family":"Conte","sequence":"first","affiliation":[{"name":"Chemical Engineering and Materials Department, Chemical Sciences Faculty, Complutense University of Madrid, 28040 Madrid, Spain"},{"name":"Instituto de Desarrollo Tecnol\u00f3gico para la Industria Qu\u00edmica (INTEC), Consejo Nacional de Investigaciones Cient\u00edficas y T\u00e9cnicas (CONICET) and Universidad Nacional del Litoral (UNL), Santa Fe 3100, Argentina"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0616-579X","authenticated-orcid":false,"given":"Carmen M.","family":"Dominguez","sequence":"additional","affiliation":[{"name":"Chemical Engineering and Materials Department, Chemical Sciences Faculty, Complutense University of Madrid, 28040 Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5846-2396","authenticated-orcid":false,"given":"Alicia","family":"Checa-Fernandez","sequence":"additional","affiliation":[{"name":"Chemical Engineering and Materials Department, Chemical Sciences Faculty, Complutense University of Madrid, 28040 Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7804-5677","authenticated-orcid":false,"given":"Aurora","family":"Santos","sequence":"additional","affiliation":[{"name":"Chemical Engineering and Materials Department, Chemical Sciences Faculty, Complutense University of Madrid, 28040 Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2022,8,7]]},"reference":[{"key":"ref_1","first-page":"1","article-title":"Directive 2013\/39\/EU of the European Parliament and of the Council of 12 August 2013 amending Directives 2000\/60\/EC and 2008\/105\/EC as regards priority substances in the field of water policy","volume":"226","author":"Directive","year":"2013","journal-title":"Off. 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