Jezdimirović, Slađana

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  • Jezdimirović, Slađana (3)
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Author's Bibliography

POSSIBILITY OF USING ULTRASONIC CAVITATION IN THE PROCESS OF INDUSTRIAL WASTEWATER TREATMENT

Jezdimirović, Slađana; Dojčinović, Marina

(Beograd : Union of Mechanical and Electrotechnical Engineers and Technicians of Serbia SMEITS, 2023)

TY  - CONF
AU  - Jezdimirović, Slađana
AU  - Dojčinović, Marina
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7006
AB  - With the development of industry and population growth in recent years, there are problems related
to wastewater from production. All wastewater from the plant, regardless of how it was generated,
contains harmful substances that may have a certain degree of toxic impurities and must be treated
if their quality does not meet the legal framework. The goal of wastewater treatment is to remove
harmful substances, which reduces the degree of pollution. Most of the pollutants are of organic
origin and their removal can be realized by applying advanced techniques with ultrasound and
ultrasonic cavitation to achieve water quality that complies with legal regulations. The principle of
operation of ultrasound in wastewater treatment is based on the conversion of electricity into
vibrations of a certain amplitude and frequency, which cause the decomposition and destroying of
microorganisms and bacteria. Improved processes are the most efficient methods for removing and
degrading sparingly soluble pollutants from wastewater. The purification process is optimized in
regard to to the technological procedure, concentration, treatment time and the amount of oxidizing
agent applied.
AB  - Razvojem industrije i rastom populacije tokom poslednjih godina javljaju se problemi u vezi sa
otpadnim vodama iz proizvodnje. Sve otpadne vode iz postrojenja, bez obzira kako su nastale,
sadrže štetne materije koje mogu da imaju i određen stepen toksičnih primesa i moraju se prečistiti
ako njihov kvalitet ne odgovara zakonskim okvirima. Cilj tretmana otpadnih voda je uklanjanje
štetnih materija čime se postiže smanjenje stepena zagađenosti. Većina zagađujućih materija su
organskog porekla i njihovo uklanjanje se može realizovati primenom naprednih tehnika ultrazvuka
i ultrazvučne kavitacije, a sve u cilju postizanja kvaliteta vode u skladu sa zakonskom regulativom.
Princip delovanja ultrazvuka u obradi otpadnih voda temelji se na pretvaranju električne energije u
vibracije određene amplitude i frekvencije, koje izazivaju razgradnju i uništavanje
mikroorganizama i bakterija. Unapređeni procesi predstavljaju najefikasnije metode za uklanjanje i
degradaciju teško rastvornih zagađujućih materija iz otpadnih voda. Proces prečišćavanja je
optimizovan u odnosu na tehnološki postupak, koncentraciju, vreme tretmana i količinu
primenjenog oksidacionog sredstva.
PB  - Beograd : Union of Mechanical and Electrotechnical Engineers and Technicians of Serbia SMEITS
C3  - 11th International Conference on Renewable Electrical Power Sources
T1  - POSSIBILITY OF USING ULTRASONIC CAVITATION IN THE PROCESS OF INDUSTRIAL WASTEWATER TREATMENT
T1  - MOGUĆNOST PRIMENE ULTRAZVUČNE KAVITACIJE U PROCESU PRERADE INDUSTRIJSKIH OTPADNIH VODA
EP  - 226
SP  - 219
UR  - https://hdl.handle.net/21.15107/rcub_technorep_7006
ER  - 
@conference{
author = "Jezdimirović, Slađana and Dojčinović, Marina",
year = "2023",
abstract = "With the development of industry and population growth in recent years, there are problems related
to wastewater from production. All wastewater from the plant, regardless of how it was generated,
contains harmful substances that may have a certain degree of toxic impurities and must be treated
if their quality does not meet the legal framework. The goal of wastewater treatment is to remove
harmful substances, which reduces the degree of pollution. Most of the pollutants are of organic
origin and their removal can be realized by applying advanced techniques with ultrasound and
ultrasonic cavitation to achieve water quality that complies with legal regulations. The principle of
operation of ultrasound in wastewater treatment is based on the conversion of electricity into
vibrations of a certain amplitude and frequency, which cause the decomposition and destroying of
microorganisms and bacteria. Improved processes are the most efficient methods for removing and
degrading sparingly soluble pollutants from wastewater. The purification process is optimized in
regard to to the technological procedure, concentration, treatment time and the amount of oxidizing
agent applied., Razvojem industrije i rastom populacije tokom poslednjih godina javljaju se problemi u vezi sa
otpadnim vodama iz proizvodnje. Sve otpadne vode iz postrojenja, bez obzira kako su nastale,
sadrže štetne materije koje mogu da imaju i određen stepen toksičnih primesa i moraju se prečistiti
ako njihov kvalitet ne odgovara zakonskim okvirima. Cilj tretmana otpadnih voda je uklanjanje
štetnih materija čime se postiže smanjenje stepena zagađenosti. Većina zagađujućih materija su
organskog porekla i njihovo uklanjanje se može realizovati primenom naprednih tehnika ultrazvuka
i ultrazvučne kavitacije, a sve u cilju postizanja kvaliteta vode u skladu sa zakonskom regulativom.
Princip delovanja ultrazvuka u obradi otpadnih voda temelji se na pretvaranju električne energije u
vibracije određene amplitude i frekvencije, koje izazivaju razgradnju i uništavanje
mikroorganizama i bakterija. Unapređeni procesi predstavljaju najefikasnije metode za uklanjanje i
degradaciju teško rastvornih zagađujućih materija iz otpadnih voda. Proces prečišćavanja je
optimizovan u odnosu na tehnološki postupak, koncentraciju, vreme tretmana i količinu
primenjenog oksidacionog sredstva.",
publisher = "Beograd : Union of Mechanical and Electrotechnical Engineers and Technicians of Serbia SMEITS",
journal = "11th International Conference on Renewable Electrical Power Sources",
title = "POSSIBILITY OF USING ULTRASONIC CAVITATION IN THE PROCESS OF INDUSTRIAL WASTEWATER TREATMENT, MOGUĆNOST PRIMENE ULTRAZVUČNE KAVITACIJE U PROCESU PRERADE INDUSTRIJSKIH OTPADNIH VODA",
pages = "226-219",
url = "https://hdl.handle.net/21.15107/rcub_technorep_7006"
}
Jezdimirović, S.,& Dojčinović, M.. (2023). POSSIBILITY OF USING ULTRASONIC CAVITATION IN THE PROCESS OF INDUSTRIAL WASTEWATER TREATMENT. in 11th International Conference on Renewable Electrical Power Sources
Beograd : Union of Mechanical and Electrotechnical Engineers and Technicians of Serbia SMEITS., 219-226.
https://hdl.handle.net/21.15107/rcub_technorep_7006
Jezdimirović S, Dojčinović M. POSSIBILITY OF USING ULTRASONIC CAVITATION IN THE PROCESS OF INDUSTRIAL WASTEWATER TREATMENT. in 11th International Conference on Renewable Electrical Power Sources. 2023;:219-226.
https://hdl.handle.net/21.15107/rcub_technorep_7006 .
Jezdimirović, Slađana, Dojčinović, Marina, "POSSIBILITY OF USING ULTRASONIC CAVITATION IN THE PROCESS OF INDUSTRIAL WASTEWATER TREATMENT" in 11th International Conference on Renewable Electrical Power Sources (2023):219-226,
https://hdl.handle.net/21.15107/rcub_technorep_7006 .

THE INFLUENCE OF THE GLASS GARDEN EFFECT ON CLIMATE CHANGES

Jezdimirović, Slađana; Dojčinović, Marina

(Beograd : Union of Mechanical and Electrotechnical Engineers and Technicians of Serbia SMEITS, 2023)

TY  - CONF
AU  - Jezdimirović, Slađana
AU  - Dojčinović, Marina
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7007
AB  - The burning of fossil fuels and other human activities in order to clear the land for the needs of
agriculture or the construction of settlements, lead to increased emissions by releasing into the
atmosphere gases that retain heat within it. The atmosphere, similar to glass, mostly passes the
solar radiation, but it is poorly permeable to the radiation of the Earth's surface. Part of the energy
that enters the Earth - atmosphere system remains in it and is converted into thermal energy,
heating the Earth's surface and the lower layers of the atmosphere and leading to the appearance of
the greenhouse effect. The greenhouse effect is the process of the planet Earth warming, caused by
the disruption of the energy balance between the amount of radiation that the Earth's surface
receives from the Sun and returns to space. Part of the heat radiation, which reaches the Earth's
crust, is reflected into the atmosphere and instead of going into space, it is absorbed by some gases
in the atmosphere and re-radiated to the Earth. In this way, the temperature of the Earth's surface
rises. The gases that contribute the most to this phenomenon are carbon dioxide and methane and
they build up in the atmosphere, trapping more and more heat near the Earth's surface thus causing
the climate to warm. As a result, there are sudden changes, which lead to the parameters of global
warming and climate change becoming unpredictable in the occurrence of frequent hurricanes,
floods, cyclones and other weather disasters, melting of ice on the polar caps and glaciers, which
cause an increase in the height of the seas and oceans, the impossibility of accurate prediction
weather forecasts, etc. Greenhouse gas emissions are critical to understanding and addressing the climate crisis and must be reduced by 2030 to limit global warming to 1.5 °C compared to pre
industrial levels by the end of the century.
AB  - Sagorevanje fosilnih goriva i drugih ljudskih aktivnosti u cilju raščišćavanja zemljišta za potrebe
zemljoradnje ili izgradnje naselja, dovode do povećane emisije, oslobađajući u atmosferu gasove
koji zadržavaju toplotu unutar nje. Atmosfera, slično staklu, uglavnom propušta Sunčevo zračenje,
ali je slabo propusna za zračenje Zemljine površine. Deo energije koji uđe u sistem Zemlja -
atmosfera, ostaje u njemu i pretvara se u toplotnu energiju, zagrevajući Zemljinu površinu i niže
slojeve atmosfere i dovodi do pojave efekta staklene bašte. Efekat staklene bašte je proces
zagrevanja planete Zemlje koji je nastaje poremećajem energetske ravnoteže između količine
zračenja koje Zemljina površina prima od Sunca i vraća u svemir. Deo toplotnog zračenja, koje
stiže do Zemljine kore, odbija se u atmosferu i, umesto da ode u svemir, apsorbuju ga neki gasovi i
ponovno zrače na Zemlju. Na ovaj način, temperatura Zemljine površine se povišava. Ovom
fenomenu najviše diprinose gasovi ugljen-dioksid i metan koji se nagomilavaju u atmosferi,
zadržavajući sve više toplote pri Zemljinoj površini, što uzrokuje otopljavanje. Kao posledicu toga,
javljaju se nagle promene koje dovode da parametri globalnog zagrevanja i klimatskih promena
postaju nepredvidivi u pojavama učestalih uragana, poplava, ciklona i ostalih vremenskih
nepogoda, topljenja leda na polarnim kapama i glečerima, što uzrokuje porast visine mora i
okeana, nemogućnost tačnog predviđanja vremenske prognoze i sl. Emisije gasova staklene bašte
su od ključne važnosti za razumevanje i rešavanje klimatske krize i moraju se smanjiti do 2030.
god., kako bi se ograničilo globalno zagrevanje na 1,5 °C u poređenju sa predindustrijskim nivoima
do kraja veka.
PB  - Beograd : Union of Mechanical and Electrotechnical Engineers and Technicians of Serbia SMEITS
C3  - 11th International Conference on Renewable Electrical Power Sources
T1  - THE INFLUENCE OF THE GLASS GARDEN EFFECT ON CLIMATE CHANGES
T1  - UTICAJ EFEKTA STAKLENE BAŠTE NA KLIMATSKE PROMENE
EP  - 294
SP  - 287
UR  - https://hdl.handle.net/21.15107/rcub_technorep_7007
ER  - 
@conference{
author = "Jezdimirović, Slađana and Dojčinović, Marina",
year = "2023",
abstract = "The burning of fossil fuels and other human activities in order to clear the land for the needs of
agriculture or the construction of settlements, lead to increased emissions by releasing into the
atmosphere gases that retain heat within it. The atmosphere, similar to glass, mostly passes the
solar radiation, but it is poorly permeable to the radiation of the Earth's surface. Part of the energy
that enters the Earth - atmosphere system remains in it and is converted into thermal energy,
heating the Earth's surface and the lower layers of the atmosphere and leading to the appearance of
the greenhouse effect. The greenhouse effect is the process of the planet Earth warming, caused by
the disruption of the energy balance between the amount of radiation that the Earth's surface
receives from the Sun and returns to space. Part of the heat radiation, which reaches the Earth's
crust, is reflected into the atmosphere and instead of going into space, it is absorbed by some gases
in the atmosphere and re-radiated to the Earth. In this way, the temperature of the Earth's surface
rises. The gases that contribute the most to this phenomenon are carbon dioxide and methane and
they build up in the atmosphere, trapping more and more heat near the Earth's surface thus causing
the climate to warm. As a result, there are sudden changes, which lead to the parameters of global
warming and climate change becoming unpredictable in the occurrence of frequent hurricanes,
floods, cyclones and other weather disasters, melting of ice on the polar caps and glaciers, which
cause an increase in the height of the seas and oceans, the impossibility of accurate prediction
weather forecasts, etc. Greenhouse gas emissions are critical to understanding and addressing the climate crisis and must be reduced by 2030 to limit global warming to 1.5 °C compared to pre
industrial levels by the end of the century., Sagorevanje fosilnih goriva i drugih ljudskih aktivnosti u cilju raščišćavanja zemljišta za potrebe
zemljoradnje ili izgradnje naselja, dovode do povećane emisije, oslobađajući u atmosferu gasove
koji zadržavaju toplotu unutar nje. Atmosfera, slično staklu, uglavnom propušta Sunčevo zračenje,
ali je slabo propusna za zračenje Zemljine površine. Deo energije koji uđe u sistem Zemlja -
atmosfera, ostaje u njemu i pretvara se u toplotnu energiju, zagrevajući Zemljinu površinu i niže
slojeve atmosfere i dovodi do pojave efekta staklene bašte. Efekat staklene bašte je proces
zagrevanja planete Zemlje koji je nastaje poremećajem energetske ravnoteže između količine
zračenja koje Zemljina površina prima od Sunca i vraća u svemir. Deo toplotnog zračenja, koje
stiže do Zemljine kore, odbija se u atmosferu i, umesto da ode u svemir, apsorbuju ga neki gasovi i
ponovno zrače na Zemlju. Na ovaj način, temperatura Zemljine površine se povišava. Ovom
fenomenu najviše diprinose gasovi ugljen-dioksid i metan koji se nagomilavaju u atmosferi,
zadržavajući sve više toplote pri Zemljinoj površini, što uzrokuje otopljavanje. Kao posledicu toga,
javljaju se nagle promene koje dovode da parametri globalnog zagrevanja i klimatskih promena
postaju nepredvidivi u pojavama učestalih uragana, poplava, ciklona i ostalih vremenskih
nepogoda, topljenja leda na polarnim kapama i glečerima, što uzrokuje porast visine mora i
okeana, nemogućnost tačnog predviđanja vremenske prognoze i sl. Emisije gasova staklene bašte
su od ključne važnosti za razumevanje i rešavanje klimatske krize i moraju se smanjiti do 2030.
god., kako bi se ograničilo globalno zagrevanje na 1,5 °C u poređenju sa predindustrijskim nivoima
do kraja veka.",
publisher = "Beograd : Union of Mechanical and Electrotechnical Engineers and Technicians of Serbia SMEITS",
journal = "11th International Conference on Renewable Electrical Power Sources",
title = "THE INFLUENCE OF THE GLASS GARDEN EFFECT ON CLIMATE CHANGES, UTICAJ EFEKTA STAKLENE BAŠTE NA KLIMATSKE PROMENE",
pages = "294-287",
url = "https://hdl.handle.net/21.15107/rcub_technorep_7007"
}
Jezdimirović, S.,& Dojčinović, M.. (2023). THE INFLUENCE OF THE GLASS GARDEN EFFECT ON CLIMATE CHANGES. in 11th International Conference on Renewable Electrical Power Sources
Beograd : Union of Mechanical and Electrotechnical Engineers and Technicians of Serbia SMEITS., 287-294.
https://hdl.handle.net/21.15107/rcub_technorep_7007
Jezdimirović S, Dojčinović M. THE INFLUENCE OF THE GLASS GARDEN EFFECT ON CLIMATE CHANGES. in 11th International Conference on Renewable Electrical Power Sources. 2023;:287-294.
https://hdl.handle.net/21.15107/rcub_technorep_7007 .
Jezdimirović, Slađana, Dojčinović, Marina, "THE INFLUENCE OF THE GLASS GARDEN EFFECT ON CLIMATE CHANGES" in 11th International Conference on Renewable Electrical Power Sources (2023):287-294,
https://hdl.handle.net/21.15107/rcub_technorep_7007 .

Influence of the polymer matrix type on cavitation resistance of composites

Dojčinović, Marina; Pavlović, Marko; Jezdimirović, Slađana; Purić, Branka; Cvetković, Aleksandar

(Banja Luka : Faculty of Mechanical Engineering, 2021)

TY  - CONF
AU  - Dojčinović, Marina
AU  - Pavlović, Marko
AU  - Jezdimirović, Slađana
AU  - Purić, Branka
AU  - Cvetković, Aleksandar
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7056
AB  - Cavitation resistance of polymer matrix/basalt powder composites was determined in this work.
Two types of composites were tested: epoxy resin / basalt powder composite and polyester resin /
basalt powder composite. In both cases, a basalt powder was used as reinforcement in the resin
(grain size 20µm, in the amount of 15 wt%). An ultrasonic vibration method with a stationary
sample was used to test the cavitation resistance of composites in laboratory conditions.The change 
in sample mass with test time was monitored to define cavitation rate. Scanning electron microscopy 
was used to monitor the morphology of composites surface damage.
PB  - Banja Luka : Faculty of Mechanical Engineering
C3  - Proceedings : DEMI 2021 / 15th international conference on accomplishments in mechanical and industrial engineering, Banja Luka, May 2021
T1  - Influence of the polymer matrix type on cavitation resistance of composites
EP  - 386
SP  - 383
UR  - https://hdl.handle.net/21.15107/rcub_technorep_7056
ER  - 
@conference{
author = "Dojčinović, Marina and Pavlović, Marko and Jezdimirović, Slađana and Purić, Branka and Cvetković, Aleksandar",
year = "2021",
abstract = "Cavitation resistance of polymer matrix/basalt powder composites was determined in this work.
Two types of composites were tested: epoxy resin / basalt powder composite and polyester resin /
basalt powder composite. In both cases, a basalt powder was used as reinforcement in the resin
(grain size 20µm, in the amount of 15 wt%). An ultrasonic vibration method with a stationary
sample was used to test the cavitation resistance of composites in laboratory conditions.The change 
in sample mass with test time was monitored to define cavitation rate. Scanning electron microscopy 
was used to monitor the morphology of composites surface damage.",
publisher = "Banja Luka : Faculty of Mechanical Engineering",
journal = "Proceedings : DEMI 2021 / 15th international conference on accomplishments in mechanical and industrial engineering, Banja Luka, May 2021",
title = "Influence of the polymer matrix type on cavitation resistance of composites",
pages = "386-383",
url = "https://hdl.handle.net/21.15107/rcub_technorep_7056"
}
Dojčinović, M., Pavlović, M., Jezdimirović, S., Purić, B.,& Cvetković, A.. (2021). Influence of the polymer matrix type on cavitation resistance of composites. in Proceedings : DEMI 2021 / 15th international conference on accomplishments in mechanical and industrial engineering, Banja Luka, May 2021
Banja Luka : Faculty of Mechanical Engineering., 383-386.
https://hdl.handle.net/21.15107/rcub_technorep_7056
Dojčinović M, Pavlović M, Jezdimirović S, Purić B, Cvetković A. Influence of the polymer matrix type on cavitation resistance of composites. in Proceedings : DEMI 2021 / 15th international conference on accomplishments in mechanical and industrial engineering, Banja Luka, May 2021. 2021;:383-386.
https://hdl.handle.net/21.15107/rcub_technorep_7056 .
Dojčinović, Marina, Pavlović, Marko, Jezdimirović, Slađana, Purić, Branka, Cvetković, Aleksandar, "Influence of the polymer matrix type on cavitation resistance of composites" in Proceedings : DEMI 2021 / 15th international conference on accomplishments in mechanical and industrial engineering, Banja Luka, May 2021 (2021):383-386,
https://hdl.handle.net/21.15107/rcub_technorep_7056 .