Naslov
Using nZVI particles and hydrogel incorporated nZVI for amoxicillin removal

Autori
Špoljarić, Andrea ; Vidović, Elvira

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
28th Croatian Meeting of Chemist and Chemical Engineers / - , 2023, 241-241

Skup
28th Croatian Meeting of Chemist and Chemical Engineers

Mjesto i datum
Rovinj, Hrvatska, 28.03.2023. - 31.03.2023

Vrsta sudjelovanja
Poster

Vrsta recenzije
Domaća recenzija

Ključne riječi
nano zero-valent iron, amoxicillin, advanced oxidation process

Sažetak
Antibiotics have become a great environmental issue of modern world. Their concentrations are gradually rising in wastewater and ground water where they are imposing a risk for aquatic and terrestrial organisms. Various methods for pharmaceutical wastewater treatment including adsorption, filtration and advanced oxidation processes (AOP) have already been implemented by industries while researchers are working on the improvement of efficiency of those methods. Nano zero-valent iron (nZVI) particles can be used for the removal of amoxicillin (AMX) from water using one of the AOP methods – heterogeneous Fenton-like reaction. [1] In this work, we conducted two sets of experiments for removal of AMX. First experiments of AMX removal were carried out using bare commercial nZVI particles with different mass concentration (7.5, 12.5 and 25 mg). In the second set of removal experiments two different types of synthetized hydrogels were used. Both of them are copolymers of cellulose and poly(2-(dimethylamino)ethyl methacrylate), molar ratio of 1:3, and contain silica nanofiller. At the same time, they differ because hydrogel 1-3 KSP was not irradiated and 1-3 KSZ was irradiated with gamma radiation of 100 kGy. Finally, those hydrogels were submerged in water dispersions of commercial nZVI particles of different mass concentrations (75, 125 and 250 mg/L). AMX concentration was determined with UV-visible spectrophotometry and removal efficiency was calculated afterwards. The removal efficiency of AMX by bare nZVI increased with mass load and reached a maximum around 40%. Irradiated hydrogel composites with nZVI particles displayed decreasing removal efficiency with increasing mass load of nZVI particles. Among non-irradiated hydrogels, 1-3 KSP hydrogel with the highest mass load of nZVI showed the highest removal efficiency (around 38%). [1] S. Zha, Y. Cheng, Y. Gao, Z. Chen, M. Megharaj, R. Naidu, Chemical Engineering Journal 255 (2014) 141-148.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Kemijsko inženjerstvo

POVEZANOST RADA