| Continuous electrochemical treatment of phenolic wastewater in a tubular reactor. | |
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MedLine Citation:
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PMID: 12600378 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The electrochemical treatment of phenolic wastewater in a continuous tubular reactor, constructed from a stainless steel tube with a cylindrical carbon anode at the centre, was investigated in this study, being first in literature. The effects of residence time on phenol removal was studied at 25 degrees C, 120 g l(-1) electrolyte concentration for 450 and 3100 mg l(-1) phenol feed concentrations with 61.4 and 54.7 mA cm(-2) current densities, respectively. The change in phenol concentration and pH of the reaction medium was monitored in every run and GC/MS analyses were performed to determine the fate of intermediate products formed during the electrochemical reaction in a specified batch run. During the electrolysis mono, di- and tri-substituted chlorinated phenol products were initially formed and consumed along with phenol thereafter mainly by polymerization mechanism. For 10 and 20 min of residence time phenol removal was 56% and 78%, respectively, with 450 mg l(-1) phenol feed concentration and above 40 min of residence time all phenol was consumed within the column. For 1, 1.5, 2 and 3h of residence time, phenol removal achieved was 42%, 71%, 81% and 98%, respectively, at 3100 mg l(-1) phenol feed concentration. It is noteworthy that more than 95% of the initial phenol was converted into a non-passivating polymer without hazardous end products in a comparatively fast and energy-efficient process, being a safe treatment. |
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Authors:
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Bahadir K Körbahti; Abdurrahman Tanyolaç |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Water research Volume: 37 ISSN: 0043-1354 ISO Abbreviation: Water Res. Publication Date: 2003 Apr |
Date Detail:
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Created Date: 2003-02-25 Completed Date: 2003-06-18 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0105072 Medline TA: Water Res Country: England |
Other Details:
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Languages: eng Pagination: 1505-14 Citation Subset: IM |
Copyright Information:
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Copyright 2002 Elsevier Science Ltd. |
Affiliation:
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Faculty of Engineering, Chemical Engineering Department, Hacettepe University, Beytepe 06532, Ankara, Turkey. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Disinfectants
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chemistry*,
isolation & purification Electrochemistry Environmental Monitoring Kinetics Phenols / chemistry*, isolation & purification Polymers Waste Disposal, Fluid Water Pollutants, Chemical / isolation & purification* Water Purification / methods* |
| Chemical | |
Reg. No./Substance:
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0/Disinfectants; 0/Phenols; 0/Polymers; 0/Water Pollutants, Chemical |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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