WSEAS Transactions on Environment and Development, cilt.19, ss.45-69, 2023 (Scopus)
© 2023, World Scientific and Engineering Academy and Society. All rights reserved.In this study, the effects of ambient conditions, the effects of increasing sonication time (60 min, 120 and 150 min), increasing temperatures (25o C, 30oC and 60oC), different nitrogen gas sparging {15 min [3 mg/l N2(g)] and 30 min [6 mg/l N2(g)]} on sonication at a textile industry wastewater (TI ww) treatment plant in Izmir (Turkey) containing toxic and resistant pollutants was investigated in 500 ml glass reactor, at 640 W sonication power, at 35 kHz sonication frequency has been researched. The maximum removal yields were measured to 98.23% chemical oxygen demand-dissolved (CODdis), 95.30% color and 68.08% total aromatic amines (TAAs), at 30 min N2(g) [6 mg/l N2(g)] sparging after 150 min sonication time, at pH=7.0 and at 60oC in TI ww, respectively. In the final stage of this study, the energy and costs used for the sonication process were compared in detail with the other Advanced Oxidation Process (AOPs) methods. Statistical analysis was also investigated for operational conditions. Finally, sonication at 35 kHz proved to be a viable tool for the effective removal of CODdis, color and TAAs from TI ww, providing a cost-effective alternative for destroying and detoxifying the refractory compounds in TI ww, respectively. Also, this study showed that the energy requirements of the sonication process is lower than the other AOPs.