Marković, Radmila

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orcid::0000-0001-9754-1150
  • Marković, Radmila (6)
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Author's Bibliography

Influence of the Shape of Copper Powder Particles on the Crystal Structure and Some Decisive Characteristics of the Metal Powders

Avramović, Ljiljana; Maksimović, Vesna M.; Baščarević, Zvezdana; Ignjatović, Nenad; Bugarin, Mile; Marković, Radmila; Nikolić, Nebojša D.

(Basel : MDPI, 2019)

TY  - JOUR
AU  - Avramović, Ljiljana
AU  - Maksimović, Vesna M.
AU  - Baščarević, Zvezdana
AU  - Ignjatović, Nenad
AU  - Bugarin, Mile
AU  - Marković, Radmila
AU  - Nikolić, Nebojša D.
PY  - 2019
UR  - https://www.mdpi.com/2075-4701/9/1/56
UR  - https://dais.sanu.ac.rs/123456789/4770
AB  - Three different forms of Cu powder particles obtained by either galvanostatic electrolysis or a non-electrolytic method were analyzed by a scanning electron microscope (SEM), X-ray diffraction (XRD) and particle size distribution (PSD). Electrolytic procedures were performed under different hydrogen evolution conditions, leading to the formation of either 3D branched dendrites or disperse cauliflower-like particles. The third type of particles were compact agglomerates of the Cu grains, whose structural characteristics indicated that they were formed by a non-electrolytic method. Unlike the sharp tips that characterize the usual form of Cu dendrites, the ends of both the trunk and branches were globules in the formed dendrites, indicating that a novel type of Cu dendrites was formed in this investigation. Although the macro structures of the particles were extremely varied, they had very similar micro structures because they were constructed by spherical grains. The Cu crystallites were randomly oriented in the dendrites and compact agglomerates of the Cu grains, while the disperse cauliflower-like particles showed (220) and (311) preferred orientation. This indicates that the applied current density affects not only the morphology of the particles, but also their crystal structure. The best performance, defined by the largest specific surface area and the smallest particle size, was by the galvanostatically produced powder consisting of disperse cauliflower-like particles.
PB  - Basel : MDPI
T2  - Metals
T1  - Influence of the Shape of Copper Powder Particles on the Crystal Structure and Some Decisive Characteristics of the Metal Powders
SP  - 56
VL  - 9
IS  - 1
DO  - 10.3390/met9010056
UR  - https://hdl.handle.net/21.15107/rcub_dais_4770
ER  - 
@article{
author = "Avramović, Ljiljana and Maksimović, Vesna M. and Baščarević, Zvezdana and Ignjatović, Nenad and Bugarin, Mile and Marković, Radmila and Nikolić, Nebojša D.",
year = "2019",
abstract = "Three different forms of Cu powder particles obtained by either galvanostatic electrolysis or a non-electrolytic method were analyzed by a scanning electron microscope (SEM), X-ray diffraction (XRD) and particle size distribution (PSD). Electrolytic procedures were performed under different hydrogen evolution conditions, leading to the formation of either 3D branched dendrites or disperse cauliflower-like particles. The third type of particles were compact agglomerates of the Cu grains, whose structural characteristics indicated that they were formed by a non-electrolytic method. Unlike the sharp tips that characterize the usual form of Cu dendrites, the ends of both the trunk and branches were globules in the formed dendrites, indicating that a novel type of Cu dendrites was formed in this investigation. Although the macro structures of the particles were extremely varied, they had very similar micro structures because they were constructed by spherical grains. The Cu crystallites were randomly oriented in the dendrites and compact agglomerates of the Cu grains, while the disperse cauliflower-like particles showed (220) and (311) preferred orientation. This indicates that the applied current density affects not only the morphology of the particles, but also their crystal structure. The best performance, defined by the largest specific surface area and the smallest particle size, was by the galvanostatically produced powder consisting of disperse cauliflower-like particles.",
publisher = "Basel : MDPI",
journal = "Metals",
title = "Influence of the Shape of Copper Powder Particles on the Crystal Structure and Some Decisive Characteristics of the Metal Powders",
pages = "56",
volume = "9",
number = "1",
doi = "10.3390/met9010056",
url = "https://hdl.handle.net/21.15107/rcub_dais_4770"
}
Avramović, L., Maksimović, V. M., Baščarević, Z., Ignjatović, N., Bugarin, M., Marković, R.,& Nikolić, N. D.. (2019). Influence of the Shape of Copper Powder Particles on the Crystal Structure and Some Decisive Characteristics of the Metal Powders. in Metals
Basel : MDPI., 9(1), 56.
https://doi.org/10.3390/met9010056
https://hdl.handle.net/21.15107/rcub_dais_4770
Avramović L, Maksimović VM, Baščarević Z, Ignjatović N, Bugarin M, Marković R, Nikolić ND. Influence of the Shape of Copper Powder Particles on the Crystal Structure and Some Decisive Characteristics of the Metal Powders. in Metals. 2019;9(1):56.
doi:10.3390/met9010056
https://hdl.handle.net/21.15107/rcub_dais_4770 .
Avramović, Ljiljana, Maksimović, Vesna M., Baščarević, Zvezdana, Ignjatović, Nenad, Bugarin, Mile, Marković, Radmila, Nikolić, Nebojša D., "Influence of the Shape of Copper Powder Particles on the Crystal Structure and Some Decisive Characteristics of the Metal Powders" in Metals, 9, no. 1 (2019):56,
https://doi.org/10.3390/met9010056 .,
https://hdl.handle.net/21.15107/rcub_dais_4770 .
24
15
27

Dewatering of sludge obtained by neutralisation from sulfuric-acid waste solutions

Marković, Radmila; Gardić, Vojka; Jugović, Branimir; Stevanović, Marija

(Bor: Mining and Metallurgy Institute, 2014)

TY  - JOUR
AU  - Marković, Radmila
AU  - Gardić, Vojka
AU  - Jugović, Branimir
AU  - Stevanović, Marija
PY  - 2014
UR  - https://scindeks.ceon.rs/article.aspx?artid=2334-88361404125M
UR  - https://dais.sanu.ac.rs/123456789/3372
AB  - The aim of this paper was to investigate the possibility of removing the liquid phase from the sludge using the mechanical dewatering methods. The sludge was obtained by neutralization of sulfuric acid waste solution from the process of copper electrolysis, using 1M Ca (OH)2 with and without addition of FeCl3 and AlCl3 as coagulants. Classical method of filtration by gravity and vacuum filtration method were used for tests of sludge dewatering process in the laboratory conditions. Solution volume, amount of sample, dewatering duration was measured during the experiments. The obtained results, presented in this paper, showed that using the vacuum filtration method, high of sludge sample was reduced for 75%, which is almost three times higher value compared to the results obtained using the gravity filtration. Data relating to the time of filtration, using different methods, show that in application of vacuum filtration method the dewatering time is almost 200 times faster compared to the time dewatering with gravity filtration. The shortest settling time was registered for the sludge that was obtained by neutralization process without coagulants addition.
AB  - Cilj ovog rada bio je da se ispita mogućnost uklanjanja tečne faze iz mulja metodama mehaničkog odvodnjavanja. Mulj je dobijen neutralizacijom sumporno-kiselih otpadnih rastvora iz procesa elektrolize bakra, korišćenjem 1M Ca(OH)2 sa i bez dodataka FeCl3 i AlCl3 kao koagulanata. Metoda klasične filtracije pod uticajem gravitacije i metoda vakuumske filtracije, korišćene su za ispitivanja procesa odvodnjavanja mulja u laboratorijskim uslovima. Tokom eksperimenata merena je zapremina rastvora, visina uzoraka, trajanje odvodnjavanja. Dobijeni rezultati prikazani u ovom radu pokazali su da je vakuumskom filtracijom postignuto smanjenje visine mulja od 75 % što predstavlja gotovo 3 puta veću vrednost u odnosu na rezultate dobijene klasičnom filtracijom. Podaci koji se odnose na vreme filtracije primenom različitih metoda, pokazuju da je primenom vakuumske filtracione metode vreme odvodnjavanja gotovo 200 puta kraće u odnosu na vreme odvodnjavanja klasičnom filtracijom. Najkraće vreme bistrenja suspenzije registrovano je kod mulja dobijenog procesom neutralizacije bez dodataka koagulanata.
PB  - Bor: Mining and Metallurgy Institute
T2  - Mining and Metallurgy Engineering Bor
T1  - Dewatering of sludge obtained by neutralisation from sulfuric-acid waste solutions
T1  - Odvodnjavanje mulja dobijenog neutralizacijom sumporno-kiselih otpadnih rastvora
SP  - 125
EP  - 136
IS  - 4
DO  - 10.5937/MMEB1404125M
UR  - https://hdl.handle.net/21.15107/rcub_dais_3372
ER  - 
@article{
author = "Marković, Radmila and Gardić, Vojka and Jugović, Branimir and Stevanović, Marija",
year = "2014",
abstract = "The aim of this paper was to investigate the possibility of removing the liquid phase from the sludge using the mechanical dewatering methods. The sludge was obtained by neutralization of sulfuric acid waste solution from the process of copper electrolysis, using 1M Ca (OH)2 with and without addition of FeCl3 and AlCl3 as coagulants. Classical method of filtration by gravity and vacuum filtration method were used for tests of sludge dewatering process in the laboratory conditions. Solution volume, amount of sample, dewatering duration was measured during the experiments. The obtained results, presented in this paper, showed that using the vacuum filtration method, high of sludge sample was reduced for 75%, which is almost three times higher value compared to the results obtained using the gravity filtration. Data relating to the time of filtration, using different methods, show that in application of vacuum filtration method the dewatering time is almost 200 times faster compared to the time dewatering with gravity filtration. The shortest settling time was registered for the sludge that was obtained by neutralization process without coagulants addition., Cilj ovog rada bio je da se ispita mogućnost uklanjanja tečne faze iz mulja metodama mehaničkog odvodnjavanja. Mulj je dobijen neutralizacijom sumporno-kiselih otpadnih rastvora iz procesa elektrolize bakra, korišćenjem 1M Ca(OH)2 sa i bez dodataka FeCl3 i AlCl3 kao koagulanata. Metoda klasične filtracije pod uticajem gravitacije i metoda vakuumske filtracije, korišćene su za ispitivanja procesa odvodnjavanja mulja u laboratorijskim uslovima. Tokom eksperimenata merena je zapremina rastvora, visina uzoraka, trajanje odvodnjavanja. Dobijeni rezultati prikazani u ovom radu pokazali su da je vakuumskom filtracijom postignuto smanjenje visine mulja od 75 % što predstavlja gotovo 3 puta veću vrednost u odnosu na rezultate dobijene klasičnom filtracijom. Podaci koji se odnose na vreme filtracije primenom različitih metoda, pokazuju da je primenom vakuumske filtracione metode vreme odvodnjavanja gotovo 200 puta kraće u odnosu na vreme odvodnjavanja klasičnom filtracijom. Najkraće vreme bistrenja suspenzije registrovano je kod mulja dobijenog procesom neutralizacije bez dodataka koagulanata.",
publisher = "Bor: Mining and Metallurgy Institute",
journal = "Mining and Metallurgy Engineering Bor",
title = "Dewatering of sludge obtained by neutralisation from sulfuric-acid waste solutions, Odvodnjavanje mulja dobijenog neutralizacijom sumporno-kiselih otpadnih rastvora",
pages = "125-136",
number = "4",
doi = "10.5937/MMEB1404125M",
url = "https://hdl.handle.net/21.15107/rcub_dais_3372"
}
Marković, R., Gardić, V., Jugović, B.,& Stevanović, M.. (2014). Dewatering of sludge obtained by neutralisation from sulfuric-acid waste solutions. in Mining and Metallurgy Engineering Bor
Bor: Mining and Metallurgy Institute.(4), 125-136.
https://doi.org/10.5937/MMEB1404125M
https://hdl.handle.net/21.15107/rcub_dais_3372
Marković R, Gardić V, Jugović B, Stevanović M. Dewatering of sludge obtained by neutralisation from sulfuric-acid waste solutions. in Mining and Metallurgy Engineering Bor. 2014;(4):125-136.
doi:10.5937/MMEB1404125M
https://hdl.handle.net/21.15107/rcub_dais_3372 .
Marković, Radmila, Gardić, Vojka, Jugović, Branimir, Stevanović, Marija, "Dewatering of sludge obtained by neutralisation from sulfuric-acid waste solutions" in Mining and Metallurgy Engineering Bor, no. 4 (2014):125-136,
https://doi.org/10.5937/MMEB1404125M .,
https://hdl.handle.net/21.15107/rcub_dais_3372 .
2

Treatment of Waste Copper Electrolytes Using Insoluble and Soluble Anodes

Marković, Radmila; Stevanović, Jasmina S.; Gvozdenović, Milica M.; Jugović, Branimir; Grujić, Aleksandar; Nedeljković, Dragutin; Stajić Trošić, Jasna

(Belgrade : ESG, 2013)

TY  - JOUR
AU  - Marković, Radmila
AU  - Stevanović, Jasmina S.
AU  - Gvozdenović, Milica M.
AU  - Jugović, Branimir
AU  - Grujić, Aleksandar
AU  - Nedeljković, Dragutin
AU  - Stajić Trošić, Jasna
PY  - 2013
UR  - https://dais.sanu.ac.rs/123456789/365
AB  - The use of copper anodes with non standard content of impurities for the treatment of waste, sulphur acid solutions that came as a result of the industrial process of electrolytic copper refining was investigated. Those solutions contain the high content of copper, nickel and arsine, and because of that, the copper anodes with high content of Ni, Pb, Sn and Sb were prepared. Examination the effect of high impurities content as well as the influence of the solution temperature on the anodes behaviour during the electrolytic process under the conditions that are the same as the industrial was the aim of this work. Obtained results clearly indicate that tested anodes could be used for the refined during the electrorefining process. Dissolution of copper anodes was not stoppage after the first appearance of the passivation region for A1 and A2 anodes while appearance of passivation for A3 anode, for test duration of 72 h, was not registered. The start time of the first passivation appearance is shorter in the case of the anode with high content of all impurities, anode A1. The first passivation occurrence was detected on higher temperature after about 29 h from the test starts. The change of chemical composition of electrolyte was monitored during electrolysis. Concentration of nickel in the working electrolyte at the end of process is increased and it corresponds to the Ni content in anodes. The copper and arsenic concentrations are decreased during the process. Arsenic passes into the anode slime, while the copper is deposited on the cathode and also passed in the slime. After the process is finished, obtained solution could be used for the nickel recover using the electrochemically or chemically methods.
PB  - Belgrade : ESG
T2  - International Journal of Electrochemical Science
T1  - Treatment of Waste Copper Electrolytes Using Insoluble and Soluble Anodes
SP  - 7357
EP  - 7370
VL  - 8
UR  - https://hdl.handle.net/21.15107/rcub_dais_365
ER  - 
@article{
author = "Marković, Radmila and Stevanović, Jasmina S. and Gvozdenović, Milica M. and Jugović, Branimir and Grujić, Aleksandar and Nedeljković, Dragutin and Stajić Trošić, Jasna",
year = "2013",
abstract = "The use of copper anodes with non standard content of impurities for the treatment of waste, sulphur acid solutions that came as a result of the industrial process of electrolytic copper refining was investigated. Those solutions contain the high content of copper, nickel and arsine, and because of that, the copper anodes with high content of Ni, Pb, Sn and Sb were prepared. Examination the effect of high impurities content as well as the influence of the solution temperature on the anodes behaviour during the electrolytic process under the conditions that are the same as the industrial was the aim of this work. Obtained results clearly indicate that tested anodes could be used for the refined during the electrorefining process. Dissolution of copper anodes was not stoppage after the first appearance of the passivation region for A1 and A2 anodes while appearance of passivation for A3 anode, for test duration of 72 h, was not registered. The start time of the first passivation appearance is shorter in the case of the anode with high content of all impurities, anode A1. The first passivation occurrence was detected on higher temperature after about 29 h from the test starts. The change of chemical composition of electrolyte was monitored during electrolysis. Concentration of nickel in the working electrolyte at the end of process is increased and it corresponds to the Ni content in anodes. The copper and arsenic concentrations are decreased during the process. Arsenic passes into the anode slime, while the copper is deposited on the cathode and also passed in the slime. After the process is finished, obtained solution could be used for the nickel recover using the electrochemically or chemically methods.",
publisher = "Belgrade : ESG",
journal = "International Journal of Electrochemical Science",
title = "Treatment of Waste Copper Electrolytes Using Insoluble and Soluble Anodes",
pages = "7357-7370",
volume = "8",
url = "https://hdl.handle.net/21.15107/rcub_dais_365"
}
Marković, R., Stevanović, J. S., Gvozdenović, M. M., Jugović, B., Grujić, A., Nedeljković, D.,& Stajić Trošić, J.. (2013). Treatment of Waste Copper Electrolytes Using Insoluble and Soluble Anodes. in International Journal of Electrochemical Science
Belgrade : ESG., 8, 7357-7370.
https://hdl.handle.net/21.15107/rcub_dais_365
Marković R, Stevanović JS, Gvozdenović MM, Jugović B, Grujić A, Nedeljković D, Stajić Trošić J. Treatment of Waste Copper Electrolytes Using Insoluble and Soluble Anodes. in International Journal of Electrochemical Science. 2013;8:7357-7370.
https://hdl.handle.net/21.15107/rcub_dais_365 .
Marković, Radmila, Stevanović, Jasmina S., Gvozdenović, Milica M., Jugović, Branimir, Grujić, Aleksandar, Nedeljković, Dragutin, Stajić Trošić, Jasna, "Treatment of Waste Copper Electrolytes Using Insoluble and Soluble Anodes" in International Journal of Electrochemical Science, 8 (2013):7357-7370,
https://hdl.handle.net/21.15107/rcub_dais_365 .
2
3

Copper-Sulfate Pentahydrate as a Product of the Waste Sulfuric Acid Solution Treatment

Marković, Radmila; Stevanović, Jasmina S.; Avramović, Ljiljana; Nedeljković, Dragutin; Jugović, Branimir; Stajić Trošić, Jasna; Gvozdenović, Milica M.

(Springer US, 2012)

TY  - JOUR
AU  - Marković, Radmila
AU  - Stevanović, Jasmina S.
AU  - Avramović, Ljiljana
AU  - Nedeljković, Dragutin
AU  - Jugović, Branimir
AU  - Stajić Trošić, Jasna
AU  - Gvozdenović, Milica M.
PY  - 2012
UR  - https://dais.sanu.ac.rs/123456789/478
AB  - The aim of this study is synthesis of copper-sulfate pentahydrate from the waste sulfuric acid solution-mother liquor generated during the regeneration process of copper bleed solution. Copper is removed from the mother liquor solution in the process of the electrolytic treatment using the insoluble lead anodes alloyed with 6 mass pct of antimony on the industrial-scale equipment. As the result of the decopperization process, copper is removed in the form of the cathode sludge and is precipitated at the bottom of the electrolytic cell. By this procedure, the content of copper could be reduced to the 20 mass pct of the initial value. Chemical characterization of the sludge has shown that it contains about 90 mass pct of copper. During the decopperization process, the very strong poison, arsine, can be formed, and the process is in that case terminated. The copper leaching degree of 82 mass pct is obtained using H2SO4 aqueous solution with the oxygen addition during the cathode sludge chemical treatment at 80 °C ± 5 °C. Obtained copper salt satisfies the requirements of the Serbian Standard for Pesticide, SRPS H.P1. 058. Therefore, the treatment of waste sulfuric acid solutions is of great economic and environmental interest.
PB  - Springer US
T2  - Metallurgical and Materials Transactions B
T1  - Copper-Sulfate Pentahydrate as a Product of the Waste Sulfuric Acid Solution Treatment
SP  - 1388
EP  - 1392
VL  - 43
IS  - 6
DO  - 10.1007/s11663-012-9721-8
UR  - https://hdl.handle.net/21.15107/rcub_dais_478
ER  - 
@article{
author = "Marković, Radmila and Stevanović, Jasmina S. and Avramović, Ljiljana and Nedeljković, Dragutin and Jugović, Branimir and Stajić Trošić, Jasna and Gvozdenović, Milica M.",
year = "2012",
abstract = "The aim of this study is synthesis of copper-sulfate pentahydrate from the waste sulfuric acid solution-mother liquor generated during the regeneration process of copper bleed solution. Copper is removed from the mother liquor solution in the process of the electrolytic treatment using the insoluble lead anodes alloyed with 6 mass pct of antimony on the industrial-scale equipment. As the result of the decopperization process, copper is removed in the form of the cathode sludge and is precipitated at the bottom of the electrolytic cell. By this procedure, the content of copper could be reduced to the 20 mass pct of the initial value. Chemical characterization of the sludge has shown that it contains about 90 mass pct of copper. During the decopperization process, the very strong poison, arsine, can be formed, and the process is in that case terminated. The copper leaching degree of 82 mass pct is obtained using H2SO4 aqueous solution with the oxygen addition during the cathode sludge chemical treatment at 80 °C ± 5 °C. Obtained copper salt satisfies the requirements of the Serbian Standard for Pesticide, SRPS H.P1. 058. Therefore, the treatment of waste sulfuric acid solutions is of great economic and environmental interest.",
publisher = "Springer US",
journal = "Metallurgical and Materials Transactions B",
title = "Copper-Sulfate Pentahydrate as a Product of the Waste Sulfuric Acid Solution Treatment",
pages = "1388-1392",
volume = "43",
number = "6",
doi = "10.1007/s11663-012-9721-8",
url = "https://hdl.handle.net/21.15107/rcub_dais_478"
}
Marković, R., Stevanović, J. S., Avramović, L., Nedeljković, D., Jugović, B., Stajić Trošić, J.,& Gvozdenović, M. M.. (2012). Copper-Sulfate Pentahydrate as a Product of the Waste Sulfuric Acid Solution Treatment. in Metallurgical and Materials Transactions B
Springer US., 43(6), 1388-1392.
https://doi.org/10.1007/s11663-012-9721-8
https://hdl.handle.net/21.15107/rcub_dais_478
Marković R, Stevanović JS, Avramović L, Nedeljković D, Jugović B, Stajić Trošić J, Gvozdenović MM. Copper-Sulfate Pentahydrate as a Product of the Waste Sulfuric Acid Solution Treatment. in Metallurgical and Materials Transactions B. 2012;43(6):1388-1392.
doi:10.1007/s11663-012-9721-8
https://hdl.handle.net/21.15107/rcub_dais_478 .
Marković, Radmila, Stevanović, Jasmina S., Avramović, Ljiljana, Nedeljković, Dragutin, Jugović, Branimir, Stajić Trošić, Jasna, Gvozdenović, Milica M., "Copper-Sulfate Pentahydrate as a Product of the Waste Sulfuric Acid Solution Treatment" in Metallurgical and Materials Transactions B, 43, no. 6 (2012):1388-1392,
https://doi.org/10.1007/s11663-012-9721-8 .,
https://hdl.handle.net/21.15107/rcub_dais_478 .
4
3
4

The effect of Ni content on passivation of copper anodes with non-standard chemical composition

Marković, Radmila; Stevanović, Jasmina S.; Jugović, Branimir; Gvozdenović, Milica M.; Avramović, Ljiljana

(Tatranské Matliare : Slovak Society of Chemical Engineering, 2012)

TY  - CONF
AU  - Marković, Radmila
AU  - Stevanović, Jasmina S.
AU  - Jugović, Branimir
AU  - Gvozdenović, Milica M.
AU  - Avramović, Ljiljana
PY  - 2012
UR  - https://dais.sanu.ac.rs/123456789/495
AB  - In this paper are presented the results of the first appearance of full pasivation during the treatment of the waste sulphuric-acid solution generated in the conventional copper electrorefining process. The copper anodes with non-standard content of nickel, lead, tin and antimony were used as material for electrochemical refinement. Nickel content in anodes was approximately 5 or 7.5 wt. %, and the summary content of lead, tin and antimony was up to 3 wt. %. Copper content was a difference of up to 100 wt. %. Chemical analysis of the waste solution from copper refining process which was used as electrolyte has shown that the Ni and As ions are present in concentrations of Ni - 20.5 g dm-3 and As – 4 g dm-3. The experiments were carried out in galvanostatic mode at current density of 250 A m-2, at electrolyte temperatures of T1 = 63 ± 2 0C and T2 = 73 ± 2 0C for a process duration of 72 h. The data obtained on the basis of the measured values of cell voltage for each anode where the nickel content was approximately 5 wt. % (anodes marked as A1-A4) and nickel content of approximately 7.5 wt.% (anodes marked as A5-A8) shown that using the anodes with lower nickel content (A2 and A3) leads to the appearance of full pasivation phenomenon at both electrolyte temperature. The apperance of full passivation for anodes with higher nickel content (A5-A7) is registered only at lower electrolyte temperature.
PB  - Tatranské Matliare : Slovak Society of Chemical Engineering
C3  - Proceedings of the 39th International Conference of Slovak Society of Chemical Engineering
T1  - The effect of Ni content on passivation of copper anodes with non-standard chemical composition
SP  - 1462
EP  - 1466
UR  - https://hdl.handle.net/21.15107/rcub_dais_495
ER  - 
@conference{
author = "Marković, Radmila and Stevanović, Jasmina S. and Jugović, Branimir and Gvozdenović, Milica M. and Avramović, Ljiljana",
year = "2012",
abstract = "In this paper are presented the results of the first appearance of full pasivation during the treatment of the waste sulphuric-acid solution generated in the conventional copper electrorefining process. The copper anodes with non-standard content of nickel, lead, tin and antimony were used as material for electrochemical refinement. Nickel content in anodes was approximately 5 or 7.5 wt. %, and the summary content of lead, tin and antimony was up to 3 wt. %. Copper content was a difference of up to 100 wt. %. Chemical analysis of the waste solution from copper refining process which was used as electrolyte has shown that the Ni and As ions are present in concentrations of Ni - 20.5 g dm-3 and As – 4 g dm-3. The experiments were carried out in galvanostatic mode at current density of 250 A m-2, at electrolyte temperatures of T1 = 63 ± 2 0C and T2 = 73 ± 2 0C for a process duration of 72 h. The data obtained on the basis of the measured values of cell voltage for each anode where the nickel content was approximately 5 wt. % (anodes marked as A1-A4) and nickel content of approximately 7.5 wt.% (anodes marked as A5-A8) shown that using the anodes with lower nickel content (A2 and A3) leads to the appearance of full pasivation phenomenon at both electrolyte temperature. The apperance of full passivation for anodes with higher nickel content (A5-A7) is registered only at lower electrolyte temperature.",
publisher = "Tatranské Matliare : Slovak Society of Chemical Engineering",
journal = "Proceedings of the 39th International Conference of Slovak Society of Chemical Engineering",
title = "The effect of Ni content on passivation of copper anodes with non-standard chemical composition",
pages = "1462-1466",
url = "https://hdl.handle.net/21.15107/rcub_dais_495"
}
Marković, R., Stevanović, J. S., Jugović, B., Gvozdenović, M. M.,& Avramović, L.. (2012). The effect of Ni content on passivation of copper anodes with non-standard chemical composition. in Proceedings of the 39th International Conference of Slovak Society of Chemical Engineering
Tatranské Matliare : Slovak Society of Chemical Engineering., 1462-1466.
https://hdl.handle.net/21.15107/rcub_dais_495
Marković R, Stevanović JS, Jugović B, Gvozdenović MM, Avramović L. The effect of Ni content on passivation of copper anodes with non-standard chemical composition. in Proceedings of the 39th International Conference of Slovak Society of Chemical Engineering. 2012;:1462-1466.
https://hdl.handle.net/21.15107/rcub_dais_495 .
Marković, Radmila, Stevanović, Jasmina S., Jugović, Branimir, Gvozdenović, Milica M., Avramović, Ljiljana, "The effect of Ni content on passivation of copper anodes with non-standard chemical composition" in Proceedings of the 39th International Conference of Slovak Society of Chemical Engineering (2012):1462-1466,
https://hdl.handle.net/21.15107/rcub_dais_495 .

Decopperization process of waste solutions from conventional copper electrolysis

Marković, Radmila; Stevanović, Jasmina S.; Gvozdenović, Milica M.; Jugović, Branimir; Jonović, R.

(Tatranské Matliare : Slovak Society of Chemical Engineering, 2012)

TY  - CONF
AU  - Marković, Radmila
AU  - Stevanović, Jasmina S.
AU  - Gvozdenović, Milica M.
AU  - Jugović, Branimir
AU  - Jonović, R.
PY  - 2012
UR  - https://dais.sanu.ac.rs/123456789/494
AB  - This paper is adresses on treatment of sulphuric acid waste solutions obtained during the conventional copper metallurgical activities. Mother liquor is a part of this solutions and it is generated during the regeneration process of copper bleed solution. Copper, nickel and sulphuric acid are the main components and the other registered impurities are: As, Se, Fe, Sb, Zn, Bi, Pb, Cl ions. Aim to copper removing from the mother liquor, the decopperization process on the industrial scale equipment, is investigated. Investigation was done using the rectangular insoluble lead anodes alloyed with 6 wt.% of antimony at current value of 13 000 A, identical to the current in a commercial copper refinery plant. A few parameters as so as: current, cell voltage, electrolyte temperature, electrolyte flow rate, level of electrolyte, were monitored during the test. Comparing the values of copper content in the solution before and after the decopperization of copper, it was found that it decreased of about 80 wt. % of the initial value. Chemical characterization of the sludge obtained on cathode has shown that it is a material with copper content of about 90 wt. %.
PB  - Tatranské Matliare : Slovak Society of Chemical Engineering
C3  - Proceedings of the 39th International Conference of Slovak Society of Chemical Engineering
T1  - Decopperization process of waste solutions from conventional copper electrolysis
SP  - 292
EP  - 297
UR  - https://hdl.handle.net/21.15107/rcub_dais_494
ER  - 
@conference{
author = "Marković, Radmila and Stevanović, Jasmina S. and Gvozdenović, Milica M. and Jugović, Branimir and Jonović, R.",
year = "2012",
abstract = "This paper is adresses on treatment of sulphuric acid waste solutions obtained during the conventional copper metallurgical activities. Mother liquor is a part of this solutions and it is generated during the regeneration process of copper bleed solution. Copper, nickel and sulphuric acid are the main components and the other registered impurities are: As, Se, Fe, Sb, Zn, Bi, Pb, Cl ions. Aim to copper removing from the mother liquor, the decopperization process on the industrial scale equipment, is investigated. Investigation was done using the rectangular insoluble lead anodes alloyed with 6 wt.% of antimony at current value of 13 000 A, identical to the current in a commercial copper refinery plant. A few parameters as so as: current, cell voltage, electrolyte temperature, electrolyte flow rate, level of electrolyte, were monitored during the test. Comparing the values of copper content in the solution before and after the decopperization of copper, it was found that it decreased of about 80 wt. % of the initial value. Chemical characterization of the sludge obtained on cathode has shown that it is a material with copper content of about 90 wt. %.",
publisher = "Tatranské Matliare : Slovak Society of Chemical Engineering",
journal = "Proceedings of the 39th International Conference of Slovak Society of Chemical Engineering",
title = "Decopperization process of waste solutions from conventional copper electrolysis",
pages = "292-297",
url = "https://hdl.handle.net/21.15107/rcub_dais_494"
}
Marković, R., Stevanović, J. S., Gvozdenović, M. M., Jugović, B.,& Jonović, R.. (2012). Decopperization process of waste solutions from conventional copper electrolysis. in Proceedings of the 39th International Conference of Slovak Society of Chemical Engineering
Tatranské Matliare : Slovak Society of Chemical Engineering., 292-297.
https://hdl.handle.net/21.15107/rcub_dais_494
Marković R, Stevanović JS, Gvozdenović MM, Jugović B, Jonović R. Decopperization process of waste solutions from conventional copper electrolysis. in Proceedings of the 39th International Conference of Slovak Society of Chemical Engineering. 2012;:292-297.
https://hdl.handle.net/21.15107/rcub_dais_494 .
Marković, Radmila, Stevanović, Jasmina S., Gvozdenović, Milica M., Jugović, Branimir, Jonović, R., "Decopperization process of waste solutions from conventional copper electrolysis" in Proceedings of the 39th International Conference of Slovak Society of Chemical Engineering (2012):292-297,
https://hdl.handle.net/21.15107/rcub_dais_494 .