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Elimination of Dissolved Fe3+ Ions from Water by Electrocoagulation.
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SYSNO ASEP 0507033 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Elimination of Dissolved Fe3+ Ions from Water by Electrocoagulation. Author(s) Gaálová, Jana (UCHP-M) RID, SAI, ORCID
Krystyník, Pavel (UCHP-M) RID, SAI, ORCID
Dytrych, Pavel (UCHP-M) RID, ORCID, SAI
Klusoň, Petr (UCHP-M) RID, ORCID, SAISource Title Journal of Sol-Gel Science and Technology. - : Springer - ISSN 0928-0707
Roč. 88, č. 1 (2018), s. 49-56Number of pages 8 s. Language eng - English Country US - United States Keywords water treatment ; iron ; electrocoagulation Subject RIV CI - Industrial Chemistry, Chemical Engineering OECD category Chemical process engineering R&D Projects TA04020130 GA TA ČR - Technology Agency of the Czech Republic (TA ČR) LM2015073 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Limited access Institutional support UCHP-M - RVO:67985858 UT WOS 000445914600006 EID SCOPUS 85046543504 DOI 10.1007/s10971-018-4669-z Annotation Electrocoagulation (EC) was applied for elimination of dissolved Fe3+ ions from model contaminated water. Electrochemical experiments were performed using a coagulation set-up with the volume of storage tank of 50L. To represent inorganic contamination, FeCl(3)6H(2)O was chosen as a model pollutant. Its concentration was equal to 50mg/L. Experiments were carried out by circulating model effluent (1 pass) through the cell at a flow rate (40L/h) whilst operating the power supply in galvanostatic mode. Dosing concentration was varying by changing the input current between set points and holding for sufficient time for steady state to be reached and for a sample to be collected. The process using the steel electrode reached removal efficiency up to 99%, depending on pH, and proved to be very suitable for elimination of dissolved Fe3+ ions from water. However, electrochemical experiments using the aluminum electrode reached removal efficiency only up to 25%. The different efficiency of two anodes is probably due to lower adsorption capacity of hydrous aluminum oxide for iron ions in comparison to hydrous ferric oxides. Produced nanostructured flocs were subsequently filtered, dried, and characterized by N-2 physisorption, X-ray photoelectron spectroscopy, and scanning electron microscopy. Obtained characteristics synchronously demonstrate different tendencies of Al and Fe nanostructured flocs. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2020 Electronic address http://hdl.handle.net/11104/0298125
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