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Fluoride removal from industrial effluents by combining precipitation and electrocoagulation processes
Date issued
2019
DOI
10.37358/RC.19.1.6905
Abstract
The aim of this study was the removal of fluoride from a fluoride-rich industrial wastewater by combining
two processes, precipitation with a magnesium salt and electrocoagulation. The sacrificial anode was
made of Al and the applied current densities were of 100, 200 and 300 A/m2, respectively. The experiments
were conducted at pH of 5.2, 6.2 and 7.2, respectively, and the electrolysis time was of 15, 30, 45 and 60 min,
respectively. 0.01 M NaCl was supporting electrolyte. The best results were obtained at pH of 6.2, 200 A/m2
and 45 minutes of electrolysis when the specific energy consumption was of 5.6 kWh/m3.
two processes, precipitation with a magnesium salt and electrocoagulation. The sacrificial anode was
made of Al and the applied current densities were of 100, 200 and 300 A/m2, respectively. The experiments
were conducted at pH of 5.2, 6.2 and 7.2, respectively, and the electrolysis time was of 15, 30, 45 and 60 min,
respectively. 0.01 M NaCl was supporting electrolyte. The best results were obtained at pH of 6.2, 200 A/m2
and 45 minutes of electrolysis when the specific energy consumption was of 5.6 kWh/m3.
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