@conference{
author = "Karić, Nataša and Maletić, Marina and Marković, Natalija and Vukčević, Marija and Perić-Grujić, Aleksandra and Ristić, Mirjana and Trivunac, Katarina",
year = "2021",
abstract = "Cilj ovog rada bio je ispitivanje adsorpcionih svojstava materijala na bazi skroba za
uklanjanje fosfora iz vodenih rastvora. U komunalnim i industrijskim otpadnim vodama fosfor je
dosta prisutan u obliku rastvornih fosfata, pa je prečišćavanje otpadnih voda i uklanjanje fosfata od
presudnog značaja za sprečavanje procesa eutrofikacije, odnosno pogoršanja kvaliteta voda usled
bujanja biljnih vrsta, naročito algi i cijanobakterija. Zbog svoje jednostavnosti, ekonomičnosti i
efikasnosti, adsorpcija postaje sve atraktivnija metoda za uklanjanje fosfata iz otpadnih voda. Kao
adsorpcioni materijali korišćeni su katjonski skrobovi dobijeni katjonizacijom skroba sa
glicidiltrimetilamonijum hloridom (CS-G) i betain hidrohloridom (CS-B). Adsorpciona ispitivanja
su izvršena u šaržnom sistemu. Efikasnost adsorpcije određena je spektrofotometrijski, dok su
apsorpcione krive iskorišćene za određivanje radne talasne dužine. Ispitana je kinetika procesa,
adsorpcione izoterme, kao i uticaj pH vrednosti rastvora na kapacitet adsorpcije. Dobijeni rezultati
su upoređeni sa modelima adsorpcionih izotermi (Langmuir i Freundlich) da bi se odredilo
slaganje i dobile informacije o mehanizmu i tipu adsorpcionog procesa. Takođe, ispitan je i uticaj
prisustva pojedinačnih anjona (sulfata, fluorida i nitrata) na efikasnost adsorpcije. Rezultati
adsorpcionih ispitivanja su pokazali da se CS-G i CS-B mogu koristiti kao efikasni prirodni
adsorbenti za uklanjanje jona fosfata iz vodenih rastvora., The aim of this study was to investigate the adsorption properties of starch-based
materials for removing phosphorus from aqueous solutions. In municipal and industrial wastewater
phosphorus is quite present in the form of soluble phosphates, so wastewater treatment and
phosphate removal are crucial to prevent the process of eutrophication, i.e. deterioration of water
quality due to the proliferation of plant species, especially algae and cyanobacteria. Due to its simplicity, economy, and efficiency, adsorption is becoming an increasingly significant method for
removing phosphate from wastewater. Cationic starches obtained by cationization of starch with
glycidyltrimethylammonium chloride (CS-G) and betaine hydrochloride (CS-B) were used as
adsorption materials. Adsorption tests were performed in a batch system. The adsorption efficiency
was determined spectrophotometrically, while the apsorption curves were used to determine the
operating wavelength. The kinetics of the process, adsorption isotherms, as well as the influence of
the pH value of the solution on the adsorption capacity were investigated. The obtained results were
compared with models of adsorption isotherms (Langmuir and Freundlich) in order to determine
the agreement and obtain information about the mechanism and type of adsorption process. The
influence of the presence of individual anions (sulphate, fluoride, and nitrate) on the adsorption
efficiency was also examined. The results of adsorption studies have shown that CS-G and CS-B
can be used as effective natural adsorbents to remove phosphate ions from aqueous solutions.",
publisher = "AKADEMIJA TEHNIČKIH STRUKOVNIH STUDIJA BEOGRAD",
journal = "Šesti naučno-stručni skup Politehnika 2021",
title = "Proučavanje adsorpcionih svojstava katjonski modifikovanog skroba za uklanjanje fosfata iz vodenih rastvora, Study of adsorption properties of cationic modified starch for phosphate removal from aqueous solutions",
pages = "142-136",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6118"
}
