TY  - JOUR
AU  - Milosavljević, Milutin M.
AU  - Mijin, Dušan
AU  - Konstantinović, Sandra
AU  - Elezović, Nataša M.
AU  - Takić, Ljiljana
AU  - Dražević, Ljubinka
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2628
AB  - Flotation reagents can be transformed to industrial waste if they are stored for a long period of time. Also, if synthesis or drying process is not performed under defined conditions in industrial plants, which produce flotation reagents, batch of waste may arise and be stored as a waste. The chemical composition of this waste depends on the phase in which it was created, but typically includes: unreacted alkali hydroxide, solvent - alcohol and trithiocarbonate and oxidation product - dixanthogenate. In this paper a new laboratory procedure for the treatment of such wastes is described. the identification and separation of industrial waste components is also included. From the separated dixantogenate and xanthate a laboratory synthesis of thioncarbamates is given. In addition, a semi-industrial treatment of waste xanthate is presented. Synthesis of N-alkyl and N,N-dialkyl-O-isobutylthioncarbamates were obtained from the filtrate obtained in the first step. As a by-product, sodium thioglycolate was produced. This by-product is transformed to a thioglycolic acid by the addition of an acid. Also, the synthesis of thioncarbamates from dixanthogenates, isolated from industrial waste as a cake, is desribed. Described waste treatment is additionally interesting due to the production of sulphur as another by-product. laboratory synthesis gave thioncarbamates in yields from 69.7 to 87.7%, while the semi-industrial process for the selected batches produced thioncarbamates in yields from 74.2 to 80.5%. Taking into account the importance of the synthesized compounds as selective flotation reagents, a new procedure of their synthesis from industrial waste is characterized by good yields and purity of the obtained compounds, the simplicity of process, low environmental impact and short reaction times of synthesis.
AB  - U ovom radu je opisan novi laboratorijski postupak prerade industrijskog otpada na bazi ksantata i dat poluindustrijski postupak prerade sa definisanim tehnološkim parametrima. U prvoj fazi prerade se izdvajaju komponente koje ulaze u sastav otpadnog ksantata. Druga faza prerade predstavlja tretman izdvojenih komponenata u prvoj fazi, pri čemu se izdvojeni ksantati i diksantogenati upotrebljavaju za sintezu alkiltionkarbamata, koji nalaze primenu u flotaciji kao selektivni flotoreagensi. Laboratorijskim postupkom prerade dobijeni su tionkarbamati u prinosu od 69,7-87,7%, dok se poluindustrijskim postupkom, za odabrane šarže odgovarajućeg sastava, tionkarbamati dobijaju u prinosu od 74,2-80,5%.
PB  - Association of Chemical Engineers of Serbia
T2  - Hemijska industrija
T1  - A new procedure for the treatment of an industrial waste containing flotation reagents
T1  - Novi postupak prerade industrijskog otpada koji sadrži flotoreagense na bazi ksantata
EP  - 339
IS  - 3
SP  - 331
VL  - 68
DO  - 10.2298/HEMIND130618059M
ER  - 

@article{
author = "Milosavljević, Milutin M. and Mijin, Dušan and Konstantinović, Sandra and Elezović, Nataša M. and Takić, Ljiljana and Dražević, Ljubinka",
year = "2014",
abstract = "Flotation reagents can be transformed to industrial waste if they are stored for a long period of time. Also, if synthesis or drying process is not performed under defined conditions in industrial plants, which produce flotation reagents, batch of waste may arise and be stored as a waste. The chemical composition of this waste depends on the phase in which it was created, but typically includes: unreacted alkali hydroxide, solvent - alcohol and trithiocarbonate and oxidation product - dixanthogenate. In this paper a new laboratory procedure for the treatment of such wastes is described. the identification and separation of industrial waste components is also included. From the separated dixantogenate and xanthate a laboratory synthesis of thioncarbamates is given. In addition, a semi-industrial treatment of waste xanthate is presented. Synthesis of N-alkyl and N,N-dialkyl-O-isobutylthioncarbamates were obtained from the filtrate obtained in the first step. As a by-product, sodium thioglycolate was produced. This by-product is transformed to a thioglycolic acid by the addition of an acid. Also, the synthesis of thioncarbamates from dixanthogenates, isolated from industrial waste as a cake, is desribed. Described waste treatment is additionally interesting due to the production of sulphur as another by-product. laboratory synthesis gave thioncarbamates in yields from 69.7 to 87.7%, while the semi-industrial process for the selected batches produced thioncarbamates in yields from 74.2 to 80.5%. Taking into account the importance of the synthesized compounds as selective flotation reagents, a new procedure of their synthesis from industrial waste is characterized by good yields and purity of the obtained compounds, the simplicity of process, low environmental impact and short reaction times of synthesis., U ovom radu je opisan novi laboratorijski postupak prerade industrijskog otpada na bazi ksantata i dat poluindustrijski postupak prerade sa definisanim tehnološkim parametrima. U prvoj fazi prerade se izdvajaju komponente koje ulaze u sastav otpadnog ksantata. Druga faza prerade predstavlja tretman izdvojenih komponenata u prvoj fazi, pri čemu se izdvojeni ksantati i diksantogenati upotrebljavaju za sintezu alkiltionkarbamata, koji nalaze primenu u flotaciji kao selektivni flotoreagensi. Laboratorijskim postupkom prerade dobijeni su tionkarbamati u prinosu od 69,7-87,7%, dok se poluindustrijskim postupkom, za odabrane šarže odgovarajućeg sastava, tionkarbamati dobijaju u prinosu od 74,2-80,5%.",
publisher = "Association of Chemical Engineers of Serbia",
journal = "Hemijska industrija",
title = "A new procedure for the treatment of an industrial waste containing flotation reagents, Novi postupak prerade industrijskog otpada koji sadrži flotoreagense na bazi ksantata",
pages = "339-331",
number = "3",
volume = "68",
doi = "10.2298/HEMIND130618059M"
}

Milosavljević, M. M., Mijin, D., Konstantinović, S., Elezović, N. M., Takić, L.,& Dražević, L.. (2014). A new procedure for the treatment of an industrial waste containing flotation reagents. in Hemijska industrija
Association of Chemical Engineers of Serbia., 68(3), 331-339.
https://doi.org/10.2298/HEMIND130618059M

Milosavljević MM, Mijin D, Konstantinović S, Elezović NM, Takić L, Dražević L. A new procedure for the treatment of an industrial waste containing flotation reagents. in Hemijska industrija. 2014;68(3):331-339.
doi:10.2298/HEMIND130618059M .

Milosavljević, Milutin M., Mijin, Dušan, Konstantinović, Sandra, Elezović, Nataša M., Takić, Ljiljana, Dražević, Ljubinka, "A new procedure for the treatment of an industrial waste containing flotation reagents" in Hemijska industrija, 68, no. 3 (2014):331-339,
https://doi.org/10.2298/HEMIND130618059M . .

TY  - JOUR
AU  - Dražević, Ljubinka
AU  - Petrović, Rada
AU  - Ivanović, Radomir
AU  - Onjia, Antonije
PY  - 2010
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1589
AB  - Research takes place in areas of Kosovska Mitrovica and Zvecan with the aim to determine content of following heavy metals: Pb, Cd, Cr, Hg, Zn and also pH values in surface water of Ibar river, underground waters (wells) and soil immediately near mesurment places of water on 30 m depth. Research of heavy metals presence and pH values in samples of surface and underground waters was done seasonaly, during spring, summer, autumn and winter of 2006. and 2007. While pH values and heavy metals in soil samples were examined during cold (winter) and worm(summer) periods. This kind of heavy metals presence examination in life environment was done with purpose of finding out level of their presence after Metallurgical, Mining and Chemical Combine 'Trepca' as a main pollutant stops working in year 1999, also to mention that ' Trepca' were primary pollutant for wider area than those in which research takes place. Concentration of heavy metals in samples of water from Ibar River and wells, also Cadmium in soil samples were determined by using Atom absorption spectrometry-graphite techniques and by techniques of cold steams (Hg). Other heavy metals in soil samples were determined by using X-ray fluorescence spectrometry. Results of heavy metals content (expect Hg) in soil samples show us considerably high concentration of those, more than maximum allowed concentration (MAC) , while in water beside few exceptions its content is less than MAC for drinking water. Parallel researching presence of heavy metals in natural water and soil can give us insight into state of environmental pollution and biodiversity of research area. It is noticeable that biodiversity of aqua ecosystem ie. Ibar Rivear is satisfied. While on other side biodivesity of soil is very reduced and changed.
AB  - Na područjima Kosovske Mitrovice i Zvečana ispitivan je sadržaj teških metala: Pb, Cd, Cr, Hg, Zn i pH vrednost u površinskoj vodi reke Ibar , podzemnim vodama (bunarima) i zemljišta u neposrednoj blizini mernih mesta za vode na dubini od 30 cm. Ispitivanja teških metala i pH vrednosti u uzorcima površinskih i podzemnih voda su urađena sezonski, tj. za četiri godišnja doba (proleće, leto, jesen i zima) 2006. i 2007. godine. pH vrednost i teški metali u uzorcima zemljišta ispitani su u hladnom (zima) i toplom (leto) periodu. Na ovakav način ispitivanja teških metala u životnoj sredini ispitivanog područja odlučeno je da bi se ustanovio sadržaj istih nakon prestanka rada industrijskih postrojenja Rudarsko-metalurškohemijskog Kombinata, RMHK'Trepča', 1999. g. kao primarnog zagađivača teškim metalima životne sredine ispitivanog područja i šire. Koncentracija teških metala u uzorcima vode Ibra i bunara, kao i kadmijuma iz uzoraka zemljišta, određena je atomskom apsorpcionom spektrometrijom-grafitnom tehnikom i tehnikom hladnih para (Hg). U uzorcima zemljišta, ostali teški metali su određeni metodom X-ray fluoroscentne spektrometrije. Rezultati sadržaja teških metala u uzorcima zemljišta, izuzev Hg, pokazuju znatno povišenu koncentraciju iznad maksimalno dozvoljene koncentracije (MDK), a u vodama je, uz male izuzetke, sadržaj manji od MDK za vodu za piće. Ispitivani teški metali, uporedo, za prirodne vode i zemljište mogu pružiti uvid u stanje zagađenosti životne sredine i biodiverziteta na ispitivanom području. Tako je primetno da je biodiverzitet akvatičnog ekosistema tj. reke Ibar zadovoljavajući. Dok zemljišni biodiverzitet je veoma smanjen i izmenjen.
PB  - Naučno-stručno društvo za zaštitu životne sredine Srbije - Ecologica, Beograd
T2  - Ecologica
T1  - Environmental pollution by heavy metals and biodiversity monitoring of places Kosovska Mitrovica and Zvečan
T1  - Zagađenje životne sredine teškim metalima i monitoring biodiverziteta gradova Kosovske Mitrovice i Zvečana
EP  - 358
IS  - 59
SP  - 355
VL  - 17
UR  - https://hdl.handle.net/21.15107/rcub_technorep_1589
ER  - 

@article{
author = "Dražević, Ljubinka and Petrović, Rada and Ivanović, Radomir and Onjia, Antonije",
year = "2010",
abstract = "Research takes place in areas of Kosovska Mitrovica and Zvecan with the aim to determine content of following heavy metals: Pb, Cd, Cr, Hg, Zn and also pH values in surface water of Ibar river, underground waters (wells) and soil immediately near mesurment places of water on 30 m depth. Research of heavy metals presence and pH values in samples of surface and underground waters was done seasonaly, during spring, summer, autumn and winter of 2006. and 2007. While pH values and heavy metals in soil samples were examined during cold (winter) and worm(summer) periods. This kind of heavy metals presence examination in life environment was done with purpose of finding out level of their presence after Metallurgical, Mining and Chemical Combine 'Trepca' as a main pollutant stops working in year 1999, also to mention that ' Trepca' were primary pollutant for wider area than those in which research takes place. Concentration of heavy metals in samples of water from Ibar River and wells, also Cadmium in soil samples were determined by using Atom absorption spectrometry-graphite techniques and by techniques of cold steams (Hg). Other heavy metals in soil samples were determined by using X-ray fluorescence spectrometry. Results of heavy metals content (expect Hg) in soil samples show us considerably high concentration of those, more than maximum allowed concentration (MAC) , while in water beside few exceptions its content is less than MAC for drinking water. Parallel researching presence of heavy metals in natural water and soil can give us insight into state of environmental pollution and biodiversity of research area. It is noticeable that biodiversity of aqua ecosystem ie. Ibar Rivear is satisfied. While on other side biodivesity of soil is very reduced and changed., Na područjima Kosovske Mitrovice i Zvečana ispitivan je sadržaj teških metala: Pb, Cd, Cr, Hg, Zn i pH vrednost u površinskoj vodi reke Ibar , podzemnim vodama (bunarima) i zemljišta u neposrednoj blizini mernih mesta za vode na dubini od 30 cm. Ispitivanja teških metala i pH vrednosti u uzorcima površinskih i podzemnih voda su urađena sezonski, tj. za četiri godišnja doba (proleće, leto, jesen i zima) 2006. i 2007. godine. pH vrednost i teški metali u uzorcima zemljišta ispitani su u hladnom (zima) i toplom (leto) periodu. Na ovakav način ispitivanja teških metala u životnoj sredini ispitivanog područja odlučeno je da bi se ustanovio sadržaj istih nakon prestanka rada industrijskih postrojenja Rudarsko-metalurškohemijskog Kombinata, RMHK'Trepča', 1999. g. kao primarnog zagađivača teškim metalima životne sredine ispitivanog područja i šire. Koncentracija teških metala u uzorcima vode Ibra i bunara, kao i kadmijuma iz uzoraka zemljišta, određena je atomskom apsorpcionom spektrometrijom-grafitnom tehnikom i tehnikom hladnih para (Hg). U uzorcima zemljišta, ostali teški metali su određeni metodom X-ray fluoroscentne spektrometrije. Rezultati sadržaja teških metala u uzorcima zemljišta, izuzev Hg, pokazuju znatno povišenu koncentraciju iznad maksimalno dozvoljene koncentracije (MDK), a u vodama je, uz male izuzetke, sadržaj manji od MDK za vodu za piće. Ispitivani teški metali, uporedo, za prirodne vode i zemljište mogu pružiti uvid u stanje zagađenosti životne sredine i biodiverziteta na ispitivanom području. Tako je primetno da je biodiverzitet akvatičnog ekosistema tj. reke Ibar zadovoljavajući. Dok zemljišni biodiverzitet je veoma smanjen i izmenjen.",
publisher = "Naučno-stručno društvo za zaštitu životne sredine Srbije - Ecologica, Beograd",
journal = "Ecologica",
title = "Environmental pollution by heavy metals and biodiversity monitoring of places Kosovska Mitrovica and Zvečan, Zagađenje životne sredine teškim metalima i monitoring biodiverziteta gradova Kosovske Mitrovice i Zvečana",
pages = "358-355",
number = "59",
volume = "17",
url = "https://hdl.handle.net/21.15107/rcub_technorep_1589"
}

Dražević, L., Petrović, R., Ivanović, R.,& Onjia, A.. (2010). Environmental pollution by heavy metals and biodiversity monitoring of places Kosovska Mitrovica and Zvečan. in Ecologica
Naučno-stručno društvo za zaštitu životne sredine Srbije - Ecologica, Beograd., 17(59), 355-358.
https://hdl.handle.net/21.15107/rcub_technorep_1589

Dražević L, Petrović R, Ivanović R, Onjia A. Environmental pollution by heavy metals and biodiversity monitoring of places Kosovska Mitrovica and Zvečan. in Ecologica. 2010;17(59):355-358.
https://hdl.handle.net/21.15107/rcub_technorep_1589 .

Dražević, Ljubinka, Petrović, Rada, Ivanović, Radomir, Onjia, Antonije, "Environmental pollution by heavy metals and biodiversity monitoring of places Kosovska Mitrovica and Zvečan" in Ecologica, 17, no. 59 (2010):355-358,
https://hdl.handle.net/21.15107/rcub_technorep_1589 .