Jurado Alameda E., Vicaria J., Herrera Marquez O., Olivares V., Sosa G., 2016, Study on the Use of Ozonation Catalyzed by Nanoparticles for Ecological Cleaning Processes, Chemical Engineering Transactions, 47, 259-264.
The cleaning of dried gelatinized starch adhered to stainless steel fibers was studied in a cleaning device which simulates a CIP system. The influence of ozone, surfactant (fatty ethoxylated alcohol), temperature (25- 45 °C), pH (3-13), time (45 min), nanoparticles (Al2O3 and TiO2) and nanoparticle concentration (0.0-5.0 g/L) was analyzed. No detergency was obtained with pH from 3 to 9.6. At pH=13 and 45 °C, the ozone increased the detergency value to 42%. The combined effect of ozone-surfactant produced high detergency (61.9 %) at high temperature (45 °C), increasing the degradation of the wastewater generated. When ozone and Al2O3 or TiO2 aqueous suspensions were used jointly, the detergency did not increase but decreased. The nanoparticles were adsorbed to the starch.
