Effects of fulvic acid and ferric hydroxide on removal of Fe2+ and Mn2+ by oxidation and aerated/submerged ultrafiltration membrane system

The purpose of this study is to evaluate the effects of fulvic acid (FA) and ferric hydroxide on the Fe2+ and Mn2+ removal by oxidation and aerated/submerged membrane systems. Firstly, the oxidation kinetics of Fe2+ and Mn2+ in the presence of FA and ferric hydroxide are discussed and then the contr...

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Published in:Water science & technology. Water supply 2017-12, Vol.17 (6), p.1712-1721
Main Authors: Acar, Turkan Ormanci, Durak, Sevgi Gunes, Tüfekci, Nese
Format: Article
Language:English
Subjects:
Acids
Adsorption
Aeration
Aqueous solutions
Contaminants
Desalination
Disinfection & disinfectants
Drinking water
Efficiency
Energy consumption
Environmental science
Ferric hydroxide
Fulvic acids
Groundwater
Hydroxides
Iron
Kinetics
Lakes
Membrane separation
Membranes
Oxidation
Reaction kinetics
Removal
Singers
Ultrafiltration
Water treatment
Water treatment plants
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description The purpose of this study is to evaluate the effects of fulvic acid (FA) and ferric hydroxide on the Fe2+ and Mn2+ removal by oxidation and aerated/submerged membrane systems. Firstly, the oxidation kinetics of Fe2+ and Mn2+ in the presence of FA and ferric hydroxide are discussed and then the contribution of the oxidation step in membrane experiments is determined. All experiments are conducted with synthetic drinking water and the concentration of contaminants is determined by characterization of two different drinking water sources in the city of Istanbul: Ömerli Dam Lake and Danamandıra Village groundwater. The addition of ferric hydroxide helps to mitigate fouling and enhances the rejection of Mn2+ by up to 90% by developing a secondary filtration layer on the membrane surface which has been considered a challenge in drinking water treatment plants.
doi_str_mv 10.2166/ws.2017.033
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ispartof Water science & technology. Water supply, 2017-12, Vol.17 (6), p.1712-1721
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1607-0798
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source Alma/SFX Local Collection
subjects Acids
Adsorption
Aeration
Aqueous solutions
Contaminants
Desalination
Disinfection & disinfectants
Drinking water
Efficiency
Energy consumption
Environmental science
Ferric hydroxide
Fulvic acids
Groundwater
Hydroxides
Iron
Kinetics
Lakes
Membrane separation
Membranes
Oxidation
Reaction kinetics
Removal
Singers
Ultrafiltration
Water treatment
Water treatment plants
title Effects of fulvic acid and ferric hydroxide on removal of Fe2+ and Mn2+ by oxidation and aerated/submerged ultrafiltration membrane system
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