Optimisation of hydrodynamic cavitation as an advanced oxidation option for removal of persistent contaminants in wastewater

 2019FEREC-STD-77 

Calibration Curve for orange II dye.

Perfluorooctanoic acid (PFOA) data measurement.

Effect of different cavitating devices on dye decolouration in the HC pilot plant (Fixed parameters: Orange II concentration 20 ppm, 10 L solution, solution pH 2, 60 min experiment, 10 min sampling interval, 300 KPa inlet pressure, 22 degree celcuis starting temperature).

Effect of orifice size and Catalyst (Iron sulphate) and/or hydrogen peroxide on dye decolouration (Fixed parameters: Orange II concentration 20 ppm, 10 L solution, solution pH 2, 60 min experiment, 10 min sampling interval, 300 KPa inlet pressure, 22 degree celcuis starting temperature).

Effect of different cavitating devices on dye decolouration in the HC pilot plant (Fixed parameters: Orange II concentration 20 ppm, 10 L solution, solution pH 2, 10 min experiment, 2 min sampling interval, 300 KPa inlet pressure, 22 degree celcuis starting temperature).

Effect of an orifice, a venturi and the combination of both cavitating devices on dye decolouration in HC pilot plant (Fixed parameters: Orange II concentration 20 ppm, 10 L solution, solution pH 2, 10 min experiment, 2 min sampling interval, 300 KPa inlet pressure, 22 degree celcuis starting temperature).

Chemical oxygen demand for perluorooctanoic acid (Fixed parameters: Orifice 2 mm hole,PFOA concentration 10 ppm, 10 L solution, solution pH 2, 10 min experiment, 2 min sampling interval, 300 KPa inlet pressure, 22 degree celcuis starting temperature).

Zero, first and second rate reaction plot for removal of orange II ((Fixed parameters: Orifice 2 mm hole, orange II concentration 20 ppm, 10 L solution, solution pH 2, 10 min experiment, 2 min sampling interval, 300 KPa inlet pressure, 22 degree celcuis starting temperature).

Temperature rise profile ((Fixed parameters: Orifice 2 mm hole, orange II concentration 20 ppm, 10 L solution, solution pH 2, 60 min experiment, 10 min sampling interval, 300 KPa inlet pressure, 22 degree celcuis starting temperature)