Bakterijsko luženje metala iz elektronskog otpada pomoću At. ferrooxidans

U ovom radu je ispitano biološko luženje metala (Cu, Sn, Ni, Zn i Ag) iz matičnih ploča personalnih računara pomoću Acidithiobacillus ferrooxidans (At. ferrooxidans).Poster: [https://cer.ihtm.bg.ac.rs/handle/123456789/5061

Bakterijsko luženje metala iz elektronskog otpada pomoću At. ferrooxidans

Poster presented at XLIX Savetovanje Srpskog hemijskog društva, (13-14. maj 2011., Kragujevac)Poster: [https://cer.ihtm.bg.ac.rs/handle/123456789/5060

Bakterijsko luženje metala iz elektronskog otpada pomoću At. ferrooxidans

U ovom radu je ispitano biološko luženje metala (Cu, Sn, Ni, Zn i Ag) iz matičnih ploča personalnih računara pomoću Acidithiobacillus ferrooxidans (At. ferrooxidans).Poster: [https://cherry.chem.bg.ac.rs/handle/123456789/5406

Bakterijsko luženje metala iz elektronskog otpada pomoću At. ferrooxidans

Poster presented at XLIX Savetovanje Srpskog hemijskog društva, (13-14. maj 2011., Kragujevac)Abstract: [https://cherry.chem.bg.ac.rs/handle/123456789/5405

Trace and minor elements determination in some herbal drugs by faas

In this paper trace (Cu and Zn) and minor (Mn and Fe) elements in some herbal drugs originating from the plants of the family Asteracae were determined by flame atomic absorption spectrometry. Chamomillae flos, Milefolii herba and Absinthii herba were analyzed taking into account their importance in phytotherapy in different diseases and disorders and the essentiality of mentioned elementsfor plantslife cycle. Validation of proposed method was performed by using CRM, NIST 1573a.Physical chemistry 2004 : 7th international conference on fundamental and applied aspects of physical chemistry; Belgrade (Serbia); 21-23 September 200

Supplementary material for the article: Beškoski, V. P.; Yamamoto, A.; Nakano, T.; Yamamoto, K.; Matsumura, C.; Motegi, M.; Beškoski, L. S.; Inui, H. Defluorination of Perfluoroalkyl Acids Is Followed by Production of Monofluorinated Fatty Acids. Science of the Total Environment 2018, 636, 355–359. https://doi.org/10.1016/j.scitotenv.2018.04.243

Supplementary material for: [https://doi.org/10.1016/j.scitotenv.2018.04.243]Related to published version: [http://cherry.chem.bg.ac.rs/handle/123456789/2168

Removal of Cu(II) from aqueous solutions using adsorbent based on chitosan hydrogel beads

Mine waters and tailings resulting from mining and mineral processing often have a harmful effect on the local environment. Copper has a strong biocidal activity that greatly affects ecosystems. Therefore, the removal of copper from wastewater is of great importance to the environment. Chitosan, a natural biopolymer, obtained from chitin, the most abundant natural fiber, often has better properties than much more expensive synthetic polymers. This paper investigates the application of chitosan-based sorbents for removing copper from aqueous solutions. A novel adsorbent, chitosan hydrogel beads (CHBs), was synthesized from chitosan flakes (medium molecular weight), via ionic/covalent cross-linking. Batch experiments were carried out to optimize the process conditions for efficient removal of Cu(II) and to determine the adsorption capacity of prepared CHBs. The results showed that the maximum Cu(II) adsorption capacity estimated with Langmuir isotherm modeling was 103.6 mg/g which was three times higher than chitosan flakes (33.7 mg/g).IOC 2023 : 54th International October Conference on Mining and Metallurgy; October 18-21, 2023, Bor Lake, Serbi

Humic Substances Transformation During Bioremediation of Petroleum Hydrocarbons on Pilot Experiment

U ovom radu, proučavana je mogućnost primene autohtonog zimogenog konzorcijuma mikroorganizama za bioremedijaciju naftnog zagađenja, kao i mogućnost nastanka huminskih supstanci tokom procesa bioremedijacije. Naime, neki istraživači smatraju da tokom biorazgradnje policikličnih aromatičnih ugljovodonika (PAH) nastaju supstance slične huminskim, što je veoma značajno, s’ obzirom da huminske supstance predstavljaju jedan od ključnih elemenata kvaliteta zemljišta. U cilju ispitivanja navedene hipoteze, dizajniranirano je pilot postrojenje za bioremedijaciju, i praćenje promena u ugljovodoničnom sastavu, kao i promena u sastavu huminskih supstanci.Poster: [https://cer.ihtm.bg.ac.rs/handle/123456789/5046

Extraction of the Rare Earth elements from coal fly ash by the TCLP method

Retki elementi zemljine kore (engl. Rare Earth Elements, REE) koriste se u proizvodnji uređaja visoke tehnologije, optičkih vlakana, superprovodnika, itd. Osim ruda koje su glavni izvor REE, u novije vreme oni se dobijaju iz nusproizvoda ili otpadnih materijala. Sve češće se ispituje mogućnost primene letećeg pepela kao sirovine za dobijanje REE. Uzorci letećeg pepela korišćeni u ovom radu potiču iz četiri termoelektrane sa teritorije Republike Srbije (Tent B, Morava, Kostolac i Kolubara). Ekstrakcija REE je vršena pomoću TCLP ekstrakcionog fluida. Metodom masene spektrometrije sa indukovano spregnutom plazmom analizirano je 17 elemenata (Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Th). Najviše koncentracije REE izmerene su u uzorku pepela iz termoelektrane Tent B.Rare earth elements (REEs) are used as components in high-technology devices, fiber optics, superconductors, etc. In addition to ores, by-products or waste materials are being considered as alternative sources for obtaining REEs. The potential for extracting REE from fly ash is being intensively studied. The fly ash samples used in this work were obtained from four thermal power plants from the Republic of Serbia (Tent B, Morava, Kostolac and Kolubara). The REE were extracted by TCLP extraction fluid. The ICP MS method was used for the analysis of 17 elements (Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Th). The highest concentrations of REE were measured in the sample of fly ash from the Tent B power plant

Humic Substances Transformation During Bioremediation of Petroleum Hydrocarbons on Pilot Experiment

U ovom radu, proučavana je mogućnost primene autohtonog zimogenog konzorcijuma mikroorganizama za bioremedijaciju naftnog zagađenja, kao i mogućnost nastanka huminskih supstanci tokom procesa bioremedijacije. Naime, neki istraživači smatraju da tokom biorazgradnje policikličnih aromatičnih ugljovodonika (PAH) nastaju supstance slične huminskim, što je veoma značajno, s’ obzirom da huminske supstance predstavljaju jedan od ključnih elemenata kvaliteta zemljišta. U cilju ispitivanja navedene hipoteze, dizajniranirano je pilot postrojenje za bioremedijaciju, i praćenje promena u ugljovodoničnom sastavu, kao i promena u sastavu huminskih supstanci.Poster: [https://cherry.chem.bg.ac.rs/handle/123456789/5424