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- W943485256 abstract "A wide variety of antibiotics are one of the substances for human’s concern in Pharmacy. Antibiotics are with bio-accumulation and bio-inhibition that often use for infection treatment in various human and animal diseases. This study will focus on tetracycline in antibiotics as a target and the experimentation of using Enhanced Sonolysis process to decompose and mineralize tetracycline as well as adjusting the process of transition metal iron (Fe2+, Co2+, Ag+) and oxidant (H2O2, S2O82-) in order to verify the best methods combination. Also, regarding to the differ conditions, included in the pH, and Fe2+ and H2O2 concentrations, an evaluation is made to confirm the possibility for tetracycline treatment in wastewater. As the result, it shows that after 60 minutes of ultrasound process combined with each chemical, Fe2+, Co2+, and Ag+ the removed tetracycline were only 9.8%, 8.3%, and 3.8%; and the removed TOC (total organic carbon) were only 7.2%, 5.6%, and 2.0%. Therefore, the results of ultrasound and metal chemical process are shown as ineffectual with the removal of tetracycline. However, adding H2O2 or S2O82- as oxidant in the experiment may increase the result of removed tetracycline to 3% - 83.2% and the concentration of tetracycline is reduced in the wastewater, which clearly shows that H2O2 or S2O82- are effective in this result. In comparison, Fe2+ should be the best result in the experimentation of three different metal transition irons. If various types of oxidant are listed as consideration in the experiment, the best process will be US/Fe2+/H2O2. Removal efficiency of tetracycline is removed by US/Fe2+/H2O2 at pH 3 – 6 were 91% approximately, and the TOC removals are 26.4%, 30.6%, 25.7% and 29.4%, respectively. Initially, the result shows that the different initial of pH are not effective to the removal of tetracycline as well as the removal of TOC, and yet after increased the amount of Fe2+ and H2O2 concentration by a continuous dosing mode, it discovered that it is beneficial to the removal of tetracycline in wastewater. While Fe2+ concentration reached 0.2 mM, and H2O2 concentration reached to 2 mM, it can remove 90.7% of tetracycline and 45.8% of TOC. After the chemical reaction, 0.2 mg/L NH3-N concentration was found in the final result. It occupies the full release of NH3-N 23.9%. It shows that most of the tetracycline is not mineralized to CO2 and H2O. Due to the increasing TOC efficiency (20.9% - 45.8%), may enhance the cell viability (55.2% - 87.5%) in wastewater. Therefore, according to the experimental results shown in this study, US/Fe2+/H2O2 process is effective on the degradation of tetracycline; appropriate dosages of chemicals and reaction condition are helpful in enhancing the reduction of tetracycline and reducing the toxicity." @default.
- W943485256 created "2016-06-24" @default.
- W943485256 creator A5068231187 @default.
- W943485256 creator A5072075844 @default.
- W943485256 date "2013-01-01" @default.
- W943485256 modified "2023-09-24" @default.
- W943485256 title "以 Enhanced Sonolysis 程序降解四環素廢水之可行性探討" @default.
- W943485256 hasPublicationYear "2013" @default.
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