| Popis: |
In this study, the effects of increasing sonication time (60 min, 120 and 150 min), increasing temperatures (25oC, 30oC and 60oC), different Dissolved Oxygen (DO) concentrations (2 mg/l, 4 mg/l, 6 and 10 mg/l), different N2(g) sparging (15 and 30 min) and H2O2 concentrations (100 mg/l, 500 and 2000 mg/l) was investigated on Olive Mill Industry wastewaters (OMI ww) by sonication process. The maximum removal efficiencies were 60.91% CODdis, 59.28% TOC, 49.70% color, 58.25% total phenol, 63.27% total aromatic amines (TAAs), 37.51% total fatty acids (TFAs), at 25oC and 150 min, respectively. The maximum removal yields were 66.83% CODdis, 65.92% TOC, 83.77% color, 61.24% total phenol, 70.52% TAAs, 48.84% TFAs, at 60oC and 150 min, respectively. The maximum removal efficiencies were 88.73% CODdis, 93.79% color, 91.38% total phenol, 91.58% TAAs, 74.44% TFAs, at DO=10 mg/l, at 60oC and 150 min, respectively. The maximum removal efficiencies were 84.51% CODdis, 91.88% color, 78.98% total phenol, 74.56% TAAs, 80.18% TFAs, at 30 min N2(g) sparging, at 60oC and 150 min, respectively. The maximum removal yields were 91.13% CODdis, 93.59% color, 93.65% total phenol, 83.68% TAAs, 90.30% TFAs, at 2000 mg/l H2O2, at 60oC and 150 min, respectively. Sonication at 35 kHz proved to be a viable tool for the effective removal of COD, TOC, color, total phenol, TAAs and TFAs from OMI ww, providing a cost-effective alternative for destroying and detoxifying the refractory compounds in OMI ww. |
