Akademik Veri Yönetim Sistemi
International Conference on Environment Pollution and Prevention (ICEPP‒23), Liverpool, İngiltere, 22 - 23 Aralık 2023, ss.42
In the textile industry, wastewater containing high concentrations of organic matter and different type of
dyes (anionic, cationic, reactive, etc.) are discharged into the environment. Recently, there have been many studies on
the removal of dye in wastewater using zero–valent particles (Al0
, Cu0
, Fe0
, Mg0
, Ni0
, Zn0
) as an alternative to
chemical or advanced oxidation processes. Within the scope of the study, the effect of ultrasound process (US) under
single and dual frequencies such as 20, 22, 98, 200, 300, 400, 490, and 760 kHz using zero–valent magnesium (ZVMg)
particles for Acid Violet 12 (AV12) dye removal considering pH, ZVMg dose, and reaction time parameters were
investigated. According to the obtained results, the ZVMg used alone, which has high electrochemical potential (E
0= –
2.37 volt), and the US process used alone was determined effective for AV12 removal. The particle size of ZVMg,
which was determined according to SEM-EDS and particles size analysis, decreased under the effect of US frequency,
and thus AV12 removal was achieved in a short time. While 400 and 760 kHz frequencies were effective in single and
dual frequency, while applied in combination with ZVMg, the range of 200 and 760 kHz frequencies was more
effective than other frequencies. The effective ranking of ultrasound frequencies according to dye removal was
200 > 400 > 760 > 300 > 490 > 20 > 98 > 22 kHz. These results were showed that dual frequencies produced more
hydroxyl radicals (HO•), and larger bubbles, and ZVMg adsorbed more dye as the surface diffusion rate increased
with the effect of the 20 kHz probe system at dual frequencies. It was determined that dye adsorption with ZVMg and
US process was in accordance with Freundlich isotherm and second‒order adsorption kinetics.