Investigation dielectric and morphological properties of fly ash collected from thermal power plant
Asia-Pacific Journal of Chemical Engineering, cilt.15, sa.4, 2020 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 15 Sayı: 4
- Basım Tarihi: 2020
- Doi Numarası: 10.1002/apj.2437
- Dergi Adı: Asia-Pacific Journal of Chemical Engineering
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Applied Science & Technology Source, Chemical Abstracts Core, Compendex, INSPEC
- Anahtar Kelimeler: dielectric spectroscopy, fly ash, frequency, impedance, temperature
- Ankara Hacı Bayram Veli Üniversitesi Adresli: Hayır
Özet
Fly ash is finely divided waste obtained during the generation of energy in thermal power plants by burning powdered coal. The recycling of fly ash has become an issue in recent years, as this industrial waste is environmentally and economically important. To utilizate this waste material, some electrical analyzes were carried out in the present study. The impedance, dielectric dissipation, dielectric permittivity and conductivity parameters of the pellet were measured as a function of temperature. Then, they were analysed how these parameters change depending on frequency and varying temperatures. Real and imaginary part of dielectric properties of the fly ash was measured in the frequency range of 100 Hz –15 MHz in the temperature range of 25–200 °C. The origins of observed anomalies have discussed. Temperature dependence of real and imaginary part of dielectric permittivity suggests that fly ash exhibits strong broadband electrical behavior. Additionally, EDX, XRD, TGA and DSC measurements have performed to determine structural properties of fly ash. SEM analysis has performed to observe the morphology of pellets. From the results obtained, fly ash can provide suitable new broadband absorption capacity. With utilization of this waste, it is possible to save energy, produce cheaper, protect ecological balance.