Naslov
Uklanjanje enrofloksacina iz otpadnih voda sorpcijom na kominu grožđa
(Enrofloxacine removal from wastewater by sorption on grape marc)

Autori
Ašperger, Danijela ; Tomaz, Ivana ; Gavranić, Marija ; Prišlin, Barbara ; Maslov, Luna ; Karoglan Kontić, Jasminka ; Babić, Sandra

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

Izvornik
Knjiga sažetaka "24. Hrvatski skup kemičara i kemijskih inženjera" / Ukić, Šime ; Bolanča, Tomislav - Zagreb : Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI), 2015, 118-118

ISBN
978-953-6894-58-1

Skup
24. Hrvatski skup kemičara i kemijskih inženjera

Mjesto i datum
Zagreb, Hrvatska, 21.04.2015. - 24.04.2015

Vrsta sudjelovanja
Poster

Vrsta recenzije
Domaća recenzija

Ključne riječi
enrofloksacin, otpadne vode, sorpcija, komina grožđa
(enrofloxacine, wastewater, sorption, grape marc)

Sažetak
The presence of pharmaceuticals in different environmental compartments becomes an interesting subject of scientific research, with hundreds of investigations conducted. Numerous pharmaceuticals have been found in European and American waters at concentrations ranging from several nanograms to several micrograms per liter. The main sources of pharmaceuticals in water are industrial and municipal water treatment systems, which are not adequate to remove such small molecules in very low concentrations. So, classical wastewater treatment processes are not efficient for removal of so called emerging contaminants like pharmaceuticals, personal care products and endocrine disrupting chemicals including hormones. Many studies have shown that coagulation, flocculation, precipitation and biological processes are ineffective for removing many dissolved organic contaminants, such as pharmaceuticals, especially the antibiotics. Therefore, in this paper sorption on grape marc was used as alternative method for removal of enrofloxacin (ENRO) from aqueous solution. ENRO is a fluoroquinolone antibiotic, widely used in poultry production for respiratory and enteric bacterial infections treatment, so it is widely present in water. Its core structure is a dihydroquinoline or 4-quinolone ring. It is lipophilic structure with low molecular weight, allowing tissue penetration. The influences of the initial ENRO concentration, contact time and temperature on adsorption performance were experimentally verified by a batch method. The kinetic data were analyzed using the pseudo- first-order and pseudo-second-order kinetic models. The equilibrium data were fitted to the three adsorption isotherm models: Freundlich, Langmuir and Dubinin-Radushkevich. Linear and non-linear methods were used for comparing the best fitting of the isotherms. The values of the thermodynamic parameters (G°, H°, S°) were calculated using adsorption equilibrium constant obtained from the Langmuir isotherm. This study shows that grape marc can be an important low-cost adsorbent for ENRO removal.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA