DC Field | Value | Language |
---|---|---|
dc.contributor.author | CHO, KANGWOO | - |
dc.contributor.author | Yan Qu | - |
dc.contributor.author | Daejung Kwon | - |
dc.contributor.author | Hao Zhang | - |
dc.contributor.author | Clément A. Cid | - |
dc.contributor.author | Asghar Aryanfar | - |
dc.contributor.author | Michael R. Hoffmann | - |
dc.date.accessioned | 2018-01-09T09:04:41Z | - |
dc.date.available | 2018-01-09T09:04:41Z | - |
dc.date.created | 2017-11-28 | - |
dc.date.issued | 2014-02-18 | - |
dc.identifier.issn | 0013-936X | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/40864 | - |
dc.description.abstract | We have investigated electrochemical treatment of real domestic wastewater coupled with simultaneous production of molecular H-2 as useful byproduct. The electrolysis cells employ multilayer semiconductor anodes with electroactive bismuth-doped TiO2 functionalities and stainless steel cathodes. DC-powered laboratory-scale electrolysis experiments were performed under static anodic potentials (+2.2 or +3.0 V NHE) using domestic wastewater samples, with added chloride ion in variable concentrations. Greater than 95% reductions in chemical oxygen demand (COD) and ammonium ion were achieved within 6 h. In addition, we experimentally determined a decreasing overall reactivity of reactive chlorine species toward COD with an increasing chloride ion concentration under chlorine radicals (Cl center dot, Cl-2(-)center dot) generation at +3.0 V NHE. The current efficiency for COD removal was 12% with the lowest specific energy consumption of 96 kWh kgCOD(-1) at the cell voltage of near 4 V in 50 mM chloride. The current efficiency and energy efficiency for H-2 generation were calculated to range from 34 to 84% and 14 to 26%, respectively. The hydrogen comprised 35 to 60% by volume of evolved gases. The efficacy of our electrolysis cell was further demonstrated by a 20 L prototype reactor totally powered by a photovoltaic (PV) panel, which was shown to eliminate COD and total coliform bacteria in less than 4 h of treatment. | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.relation.isPartOf | ENVIRONMENTAL SCIENCE & TECHNOLOGY | - |
dc.subject | MOLECULAR-HYDROGEN | - |
dc.subject | OXIDE ELECTRODES | - |
dc.subject | ORGANIC POLLUTANTS | - |
dc.subject | ACTIVE CHLORINE | - |
dc.subject | OXIDATION | - |
dc.subject | ELECTROLYSIS | - |
dc.subject | DEGRADATION | - |
dc.subject | OXYGEN | - |
dc.subject | PERCHLORATE | - |
dc.subject | WASTEWATERS | - |
dc.title | Effects of anodic potential and chloride ion on overall reactivity in electrochemical reactors designed for solar-powered wastewater treatment | - |
dc.type | Article | - |
dc.identifier.doi | 10.1021/es404137u | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | ENVIRONMENTAL SCIENCE & TECHNOLOGY, v.48, no.4, pp.2377 - 2384 | - |
dc.identifier.wosid | 000331774100035 | - |
dc.date.tcdate | 2019-02-01 | - |
dc.citation.endPage | 2384 | - |
dc.citation.number | 4 | - |
dc.citation.startPage | 2377 | - |
dc.citation.title | ENVIRONMENTAL SCIENCE & TECHNOLOGY | - |
dc.citation.volume | 48 | - |
dc.contributor.affiliatedAuthor | CHO, KANGWOO | - |
dc.identifier.scopusid | 2-s2.0-84894237419 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.wostc | 45 | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | ORGANIC POLLUTANTS | - |
dc.subject.keywordPlus | MOLECULAR-HYDROGEN | - |
dc.subject.keywordPlus | ACTIVE CHLORINE | - |
dc.subject.keywordPlus | OXIDATION | - |
dc.subject.keywordPlus | ELECTROLYSIS | - |
dc.subject.keywordPlus | DEGRADATION | - |
dc.subject.keywordPlus | OXYGEN | - |
dc.subject.keywordPlus | PERCHLORATE | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | ELECTRODES | - |
dc.relation.journalWebOfScienceCategory | Engineering, Environmental | - |
dc.relation.journalWebOfScienceCategory | Environmental Sciences | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalResearchArea | Environmental Sciences & Ecology | - |
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