Study on the treatment of photovoltaic wastewater using electrocoagulation: fluoride removal with aluminium electrodes--characteristics of products.
In this work, treatment of synthetic fluoride-containing solutions by electrocoagulation method using aluminium electrodes has been studied. Electrocoagulation was investigated for applied potential (10-30 V), electrolysis time and supporting electrolyte (NaCl) concentration (0-100mg/L). The results showed that with increasing applied potential and electrolysis time, the Al(3+) dosage increases, and thereby favouring the fluoride ions removal. It was also observed that defluoridation is dependant on the concentration of supporting electrolyte. Finally, X-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy of X-rays and Fourier transform infrared spectroscopy were used to characterize the solid products formed by aluminium electrodes during the EC process.
Drouiche
N
N
Silicon Technology Development Unit (UDTS), Alger-7-merveilles 16200, Algeria. nadjibdrouiche@yahoo.fr
Aoudj
S
S
Hecini
M
M
Ghaffour
N
N
Lounici
H
H
Mameri
N
N
D000535:Aluminum; D004564:Electrocoagulation / Q000295:instrumentation / Q000379:methods*; D004566:Electrodes; D004572:Electrolysis; D005459:Fluorides / Q000302:isolation & purification*; D007220:Industrial Waste / Q000517:prevention & control; D014865:Waste Disposal, Fluid / Q000295:instrumentation / Q000379:methods*
D007220:Industrial Waste; D000535:Aluminum; D005459:Fluorides