Ricerc@Sapienza

The fluoride removal efficiency of the commercial product Actifluo (Brenntag) has been evaluated on both real industrial wastewater samples as well as on synthetic wastewaters. This study demonstrates that the treatment with the Aluminum polychloride (PAC) containing Actifluo, after a preliminary precipitation step with Ca(OH)2, improved the efficiency in the fluoride removal. This has been proved on wastewaters coming from four different companies of the south of Italy.

Contact glow discharge electrolysis (CGDE) can be exploited in environmental chemistry for the degradation of pollutants in wastewater. This study focuses on the employment of cheap materials (e.g., steel and tungsten) as electrodes for experiments of CGDE conducted in electrochemical cells with variable electrolytic composition. A clear correlation between breakdown voltage (VB)/discharge (or midpoint) voltage (VD) and the conductivity of the electrolyte is shown.