Fish pond water treatment using ultrasonic cavitation and advanced oxidation processes
| Autor: | Weng Kiat Tan, Shridharan Parthasarathy, Siew Cheong Cheah, Sivakumar Manickam, R.P. Rajesh, Cheng Heng Pang |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Environmental Engineering
Health Toxicology and Mutagenesis 0208 environmental biotechnology 02 engineering and technology 010501 environmental sciences 01 natural sciences Water Purification chemistry.chemical_compound Environmental Chemistry Animals Ultrasonics Nitrite Hydrogen peroxide Ponds 0105 earth and related environmental sciences business.industry Ultrasound Public Health Environmental and Occupational Health Fishes General Medicine General Chemistry Hydrogen Peroxide Carbonate hardness Pollution 020801 environmental engineering chemistry Chemical engineering Reagent Cavitation Ultrasonic sensor Water treatment business Oxidation-Reduction |
| Zdroj: | Chemosphere. 274 |
| ISSN: | 1879-1298 |
| Popis: | This investigation explores the efficacy of employing ultrasonic cavitation and coupling it with advanced oxidation processes (hydrogen peroxide and Fenton’s reagent) for reducing the levels of total ammonia nitrogen in fish pond water containing Tilapia fishes. Ultrasonic cavitation is a phenomenon where the formation, growth and collapse of vaporous bubbles occur in a liquid medium producing highly reactive free radicals. Ultrasonic probe system (20 kHz with 750 W and 1000 W) was used to induce cavitation. Besides, to intensify the process, ultrasonic cavitation was coupled with hydrogen peroxide and Fenton’s reagent. Using SERA colour indicator test kits, the levels of ammonium, nitrite and carbonate hardness were measured. The results obtained from this study clearly show that the advanced oxidation processes are more efficient in reducing the ammonium and nitrite levels in fish pond water than using ultrasound alone. The pH and carbonate hardness levels were not affected significantly by ultrasonic cavitation. The optimal treatment time and ultrasound power to treat the water samples were also established. Energy efficiency and cost analysis of this treatment have also been presented, indicating that ultrasonic cavitation coupled with hydrogen peroxide appears to be a promising technique for reducing total ammonia nitrogen levels in the fish pond water. |
| Databáze: | OpenAIRE |
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