@conference{
author = "Stanišić, Tijana and Đolić, Maja and Ćujić, Mirjana and Ristić, Mirjana and Perić-Grujić, Aleksandra",
year = "2021",
abstract = "Olovo i arsen predstavljaju značajnu grupu neorganskih polutanata koji su prisutni uživotnoj sredini, pre svega u vodenim sistemima, pa je njihovo uklanjanje veliki tehničkotehnološki izazov. Zbog toga se sve više pažnje posvećuje razvoju pristupačnih, efikasnih iekološki prihvatljivih adsorbenata. Prirodni materijali na bazi oksida metala (SiO2, Al2O3,Fe2O3), poput ilovače, predstavljaju efikasne adsorbente za uklanjanje katjonskih i anjonskihvrsta iz vodenih rastvora. U ovom radu adsorpciona svojstva ilovače ispitivana su u šaržnomsistemu, promenom pH vrednosti početnog rastvora, dok su masa adsorbenta, vreme itemperature procesa bili konstantni. Značajnu ulogu u odvijanju adsorpcionog procesa ima pHvrednost rastvora, stoga se eksperiment zasnivao na određivanju efikasnosti procesa pri vrednostipH rastvora 4, 5 i 6. Strukturne karakteristike ilovače su određene primenom rendgenskedifrakcione analize (engl. X-Ray Difraction, XRD), infracrvenom spektroskopijom sa Furijeovomtransformacijom (engl. Fourier-Transform Infrared Spectroscopy, FTIR) i skenirajuće elektronskemikroskopije (engl. Scanning electron microscopy, SEM). Koncentracija jona nakon procesaadsorpcije određena je pomoću indukovano spregnute plazme sa masenom spektrometrijom (engl.Inductively Coupled Plasma Mass Spectrometry, ICP-MS). Maksimalna efikasnost uklanjanjajona olova postignuta je na pH vrednosti 5 (94,2 %), dok je za jone arsena optimalna pH vrednostbila 6 (35,1 %)., Lead and arsenic represent an important group of inorganic pollutants that can be found in the environment, primarily in aquatic systems. Their removal from water systems is a big environmental problem, but also a significant technological challenge. Therefore, an increasing attention is paid to the development of widely available, efficient and environmentally friendly adsorbents. Natural metal oxide-based materials (SiO2, Al2O3, Fe2O3), such as loam, are effective adsorbents for removal of cationic and anionic species. The adsorption experiments were performed in a batch system, varying the pH value of the initial solution, while the mass of adsorbent, time and temperature were constant. The influence of pH value has a leading influence to the adsorption process so the process efficiency was determined at the pH values set at: 4, 5 and 6. The structural characteristics of the loam was performed using X-ray diffraction analysis (XRD), Fourier-Transform Infrared Spectroscopy (FTIR) and scanning electron microscopy (SEM). The concentration of ions after their removal was determined using inductively coupled plasma mass spectrometry (ICP-MS). The maximum removal of lead ions was obtained at pH 5 (94.2%), while for arsenic ions, it was at pH 6 (35.1%).",
publisher = "Akademija tehničkih strukovnih studija Beograd",
journal = "6. Naučno-stručni skup Politehnika, Zbornik radova",
title = "Ispitivanje adsorpcionih svojstava ilovače za uklanjanje jona olova i arsena iz vodenih rastvora",
pages = "143-148",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11233"
}