TY  - JOUR
AU  - Vidojković, Sonja
AU  - Rakin, Marko
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3724
AB  - Deposits and scales formed on heat transfer surfaces in power plant water/steam circuits have a significant negative impact on plant reliability, availability and performance, causing tremendous economic consequences and subsequent increases in electricity cost. Consequently, the improvement of the understanding of deposition mechanisms on power generating surfaces is defined as a high priority in the power industry. The deposits consist principally of iron oxides, which are steel corrosion products and usually present in colloidal form. Magnetite (Fe3O4) is the predominant and most abundant compound found in water/steam cycles of all types of power plants. The crucial factor that governs the deposition process and influences the deposition rate of magnetite is the electrostatic interaction between the metal wall surfaces and the suspended colloidal particles. However, there is scarcity of data on magnetite surface properties at elevated temperatures due to difficulties in their experimental measurement. In this paper a generalized overview of existing experimental data on surface characteristics of magnetite at high temperatures is presented with particular emphasis on possible application in the power industry. A thorough analysis of experimental techniques, mathematical models and results has been performed and directions for future investigations have been considered. The state-of-the-art assessment showed that for the characterization of magnetite/aqueous electrolyte solution interface at high temperatures acid-base potentiometric titrations and electrophoresis were the most beneficial and dependable techniques which yielded results up to 290 and 200 degrees C, respectively. Mass titrations provided data on magnetite surface charge up to 320 degrees C, however, this technique is highly sensitive to the minor concentrations of impurities present on the surface of particle. Generally, fairly good correlation between the isoelectric point (pH(iep)) and point of zero charge (pH(pzc)) values has been obtained. All obtained results showed that the surface of magnetite particles is negatively charged in typical high temperature thermal power plant water, which indicates the low probability of aggregation and deposition on plant metal surfaces. The results also gave strong evidence on decline of pHiep and pHpzc with temperature in the same manner as neutral pH of water. The thermodynamic parameters of magnetite surface protonation reactions were in good agreement with each other and obtained using one site/two pK and mainly one site/one pK model. All collected data provided evidences for interaction between particles, probability of deposition and eventual attachment to the steel surface at various pH and temperatures and can serve as a foundation for future surface studies aimed at optimizing plant performances and reducing of magnetite deposition. In future works it would be indispensable to provide the surface experimental data for extended temperature ranges, typical solution chemistries and metal surfaces of power plant structural components and thus obtain entire set of results useful in modeling the surface behavior and control of deposition process in power reactors and thermal plant circuits. Moreover, the acquired results will be applicable and greatly valuable to all other types of power plants, industrial facilities and technological processes using the high temperature water medium.
PB  - Elsevier, Amsterdam
T2  - Advances in Colloid and Interface Science
T1  - Surface properties of magnetite in high temperature aqueous electrolyte solutions: A review
EP  - 129
SP  - 108
VL  - 245
DO  - 10.1016/j.cis.2016.08.008
ER  - 

@article{
author = "Vidojković, Sonja and Rakin, Marko",
year = "2017",
abstract = "Deposits and scales formed on heat transfer surfaces in power plant water/steam circuits have a significant negative impact on plant reliability, availability and performance, causing tremendous economic consequences and subsequent increases in electricity cost. Consequently, the improvement of the understanding of deposition mechanisms on power generating surfaces is defined as a high priority in the power industry. The deposits consist principally of iron oxides, which are steel corrosion products and usually present in colloidal form. Magnetite (Fe3O4) is the predominant and most abundant compound found in water/steam cycles of all types of power plants. The crucial factor that governs the deposition process and influences the deposition rate of magnetite is the electrostatic interaction between the metal wall surfaces and the suspended colloidal particles. However, there is scarcity of data on magnetite surface properties at elevated temperatures due to difficulties in their experimental measurement. In this paper a generalized overview of existing experimental data on surface characteristics of magnetite at high temperatures is presented with particular emphasis on possible application in the power industry. A thorough analysis of experimental techniques, mathematical models and results has been performed and directions for future investigations have been considered. The state-of-the-art assessment showed that for the characterization of magnetite/aqueous electrolyte solution interface at high temperatures acid-base potentiometric titrations and electrophoresis were the most beneficial and dependable techniques which yielded results up to 290 and 200 degrees C, respectively. Mass titrations provided data on magnetite surface charge up to 320 degrees C, however, this technique is highly sensitive to the minor concentrations of impurities present on the surface of particle. Generally, fairly good correlation between the isoelectric point (pH(iep)) and point of zero charge (pH(pzc)) values has been obtained. All obtained results showed that the surface of magnetite particles is negatively charged in typical high temperature thermal power plant water, which indicates the low probability of aggregation and deposition on plant metal surfaces. The results also gave strong evidence on decline of pHiep and pHpzc with temperature in the same manner as neutral pH of water. The thermodynamic parameters of magnetite surface protonation reactions were in good agreement with each other and obtained using one site/two pK and mainly one site/one pK model. All collected data provided evidences for interaction between particles, probability of deposition and eventual attachment to the steel surface at various pH and temperatures and can serve as a foundation for future surface studies aimed at optimizing plant performances and reducing of magnetite deposition. In future works it would be indispensable to provide the surface experimental data for extended temperature ranges, typical solution chemistries and metal surfaces of power plant structural components and thus obtain entire set of results useful in modeling the surface behavior and control of deposition process in power reactors and thermal plant circuits. Moreover, the acquired results will be applicable and greatly valuable to all other types of power plants, industrial facilities and technological processes using the high temperature water medium.",
publisher = "Elsevier, Amsterdam",
journal = "Advances in Colloid and Interface Science",
title = "Surface properties of magnetite in high temperature aqueous electrolyte solutions: A review",
pages = "129-108",
volume = "245",
doi = "10.1016/j.cis.2016.08.008"
}

Vidojković, S.,& Rakin, M.. (2017). Surface properties of magnetite in high temperature aqueous electrolyte solutions: A review. in Advances in Colloid and Interface Science
Elsevier, Amsterdam., 245, 108-129.
https://doi.org/10.1016/j.cis.2016.08.008

Vidojković S, Rakin M. Surface properties of magnetite in high temperature aqueous electrolyte solutions: A review. in Advances in Colloid and Interface Science. 2017;245:108-129.
doi:10.1016/j.cis.2016.08.008 .

Vidojković, Sonja, Rakin, Marko, "Surface properties of magnetite in high temperature aqueous electrolyte solutions: A review" in Advances in Colloid and Interface Science, 245 (2017):108-129,
https://doi.org/10.1016/j.cis.2016.08.008 . .

TY  - JOUR
AU  - Vidojković, Sonja
AU  - Onjia, Antonije
AU  - Devečerski, Aleksandar
AU  - Grahovac, Nebojša N.
AU  - Nastasović, Aleksandra
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2720
AB  - The main causes of efficiency loss in thermal power plants are boiler tube failures that diminish unit reliability and availability, and raise the cost of the electric energy. For that reason, the regular examination of boiler tubes is indispensable measure for prevention of future malfunctions of power units. The microscopic examination of economizer's inner wall microstructure, the analysis of chemical composition of deposit using X-ray diffraction (XRD) and scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS) have been performed in a subcritical power plant. Stress corrosion cracking, pitting corrosion, destroyed protective magnetite layer, presence of magnetite and hematite in deposit and corrosive impurities within the cracks have indicated the effect of inadequate quality of feedwater that cannot entirely ensure reliable operation of the boiler. It may be stated that maintenance of present boiler does not provide its reliable operation. The extensive chemical control of water/steam cycle was recommended.
PB  - Savez hemijskih inženjera, Beograd
T2  - Hemijska industrija
T1  - Economizer water-wall damages initiated by feedwater impurities
EP  - 563
IS  - 5
SP  - 559
VL  - 68
DO  - 10.2298/HEMIND130715082V
ER  - 

@article{
author = "Vidojković, Sonja and Onjia, Antonije and Devečerski, Aleksandar and Grahovac, Nebojša N. and Nastasović, Aleksandra",
year = "2014",
abstract = "The main causes of efficiency loss in thermal power plants are boiler tube failures that diminish unit reliability and availability, and raise the cost of the electric energy. For that reason, the regular examination of boiler tubes is indispensable measure for prevention of future malfunctions of power units. The microscopic examination of economizer's inner wall microstructure, the analysis of chemical composition of deposit using X-ray diffraction (XRD) and scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS) have been performed in a subcritical power plant. Stress corrosion cracking, pitting corrosion, destroyed protective magnetite layer, presence of magnetite and hematite in deposit and corrosive impurities within the cracks have indicated the effect of inadequate quality of feedwater that cannot entirely ensure reliable operation of the boiler. It may be stated that maintenance of present boiler does not provide its reliable operation. The extensive chemical control of water/steam cycle was recommended.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Hemijska industrija",
title = "Economizer water-wall damages initiated by feedwater impurities",
pages = "563-559",
number = "5",
volume = "68",
doi = "10.2298/HEMIND130715082V"
}

Vidojković, S., Onjia, A., Devečerski, A., Grahovac, N. N.,& Nastasović, A.. (2014). Economizer water-wall damages initiated by feedwater impurities. in Hemijska industrija
Savez hemijskih inženjera, Beograd., 68(5), 559-563.
https://doi.org/10.2298/HEMIND130715082V

Vidojković S, Onjia A, Devečerski A, Grahovac NN, Nastasović A. Economizer water-wall damages initiated by feedwater impurities. in Hemijska industrija. 2014;68(5):559-563.
doi:10.2298/HEMIND130715082V .

Vidojković, Sonja, Onjia, Antonije, Devečerski, Aleksandar, Grahovac, Nebojša N., Nastasović, Aleksandra, "Economizer water-wall damages initiated by feedwater impurities" in Hemijska industrija, 68, no. 5 (2014):559-563,
https://doi.org/10.2298/HEMIND130715082V . .

TY  - CONF
AU  - Tomković, Tanja
AU  - Radovanović, Filip
AU  - Nastasović, Aleksandra
AU  - Marković, Jelena
AU  - Ekmeščić, Bojana
AU  - Vidojković, Sonja
AU  - Onjia, Antonije
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2582
AB  - Novel polyethersulfone membranes with integrated submicron adsorbent particles were prepared by combining photoirradiation with liquid phase inversion. These particles consist of cross-linked poly(glycidyl methacrylate-co-acrylamido-2-methylpropane sulfonic acid), pGMA-AMPS. After membrane preparation, the epoxide groups were reacted with diethylene triamine to incorporate amine functionalities. Membranes were characterized using FTIR-ATR, SEM and dynamic adsorption of copper from a dilute solution. Effects of monomer concentrations on the properties and separation performance of membrane adsorbers are presented.
PB  - Belgrade, Serbia : Society of Physical Chemists of Serbia
C3  - Proceedings of the 12th International Conference on Fundamental and Applied Aspects of Physical Chem
T1  - Polyethersulfone membranes with integrated adsorbent particles for heavy metals capture
EP  - 790
SP  - 787
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7531
ER  - 

@conference{
author = "Tomković, Tanja and Radovanović, Filip and Nastasović, Aleksandra and Marković, Jelena and Ekmeščić, Bojana and Vidojković, Sonja and Onjia, Antonije",
year = "2014",
abstract = "Novel polyethersulfone membranes with integrated submicron adsorbent particles were prepared by combining photoirradiation with liquid phase inversion. These particles consist of cross-linked poly(glycidyl methacrylate-co-acrylamido-2-methylpropane sulfonic acid), pGMA-AMPS. After membrane preparation, the epoxide groups were reacted with diethylene triamine to incorporate amine functionalities. Membranes were characterized using FTIR-ATR, SEM and dynamic adsorption of copper from a dilute solution. Effects of monomer concentrations on the properties and separation performance of membrane adsorbers are presented.",
publisher = "Belgrade, Serbia : Society of Physical Chemists of Serbia",
journal = "Proceedings of the 12th International Conference on Fundamental and Applied Aspects of Physical Chem",
title = "Polyethersulfone membranes with integrated adsorbent particles for heavy metals capture",
pages = "790-787",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7531"
}

Tomković, T., Radovanović, F., Nastasović, A., Marković, J., Ekmeščić, B., Vidojković, S.,& Onjia, A.. (2014). Polyethersulfone membranes with integrated adsorbent particles for heavy metals capture. in Proceedings of the 12th International Conference on Fundamental and Applied Aspects of Physical Chem
Belgrade, Serbia : Society of Physical Chemists of Serbia., 787-790.
https://hdl.handle.net/21.15107/rcub_vinar_7531

Tomković T, Radovanović F, Nastasović A, Marković J, Ekmeščić B, Vidojković S, Onjia A. Polyethersulfone membranes with integrated adsorbent particles for heavy metals capture. in Proceedings of the 12th International Conference on Fundamental and Applied Aspects of Physical Chem. 2014;:787-790.
https://hdl.handle.net/21.15107/rcub_vinar_7531 .

Tomković, Tanja, Radovanović, Filip, Nastasović, Aleksandra, Marković, Jelena, Ekmeščić, Bojana, Vidojković, Sonja, Onjia, Antonije, "Polyethersulfone membranes with integrated adsorbent particles for heavy metals capture" in Proceedings of the 12th International Conference on Fundamental and Applied Aspects of Physical Chem (2014):787-790,
https://hdl.handle.net/21.15107/rcub_vinar_7531 .

TY  - JOUR
AU  - Vidojković, Sonja
AU  - Onjia, Antonije
AU  - Matović, Branko
AU  - Grahovac, Nebojša N.
AU  - Maksimović, Vesna
AU  - Nastasović, Aleksandra
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2451
AB  - Prevention and minimizing corrosion processes on steam generating equipment is highly important in the thermal power industry. The maintenance of feedwater quality at a level corresponding to the standards of technological designing, followed by timely respond to the fluctuation of measured parameters, has a decisive role in corrosion prevention. In this study, the comprehensive chemical control of feedwater quality in 210 MW Thermal Power Plant (TPP) was carried out in order to evaluate its potentiality to assure reliable function of the boiler and discover possible irregularity that might be responsible for frequent boiler tube failures. Sensitive on-line and off-line analytical instruments were used for measuring key and diagnostic parameters considered to be crucial for boiler safety and performances. Obtained results provided evidences for exceeded levels of oxygen, silica, sodium, chloride, sulfate, copper, and conductivity what distinctly demonstrated necessity of feedwater control improvement. Consequently, more effective feedwater quality monitoring concept was recommended. In this paper, the explanation of presumable root causes of corrosive contaminants was given including basic directions for their maintenance in proscribed limits.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Applied Thermal Engineering
T1  - Extensive feedwater quality control and monitoring concept for preventing chemistry-related failures of boiler tubes in a subcritical thermal power plant
EP  - 694
IS  - 1-2
SP  - 683
VL  - 59
DO  - 10.1016/j.applthermaleng.2013.06.028
ER  - 

@article{
author = "Vidojković, Sonja and Onjia, Antonije and Matović, Branko and Grahovac, Nebojša N. and Maksimović, Vesna and Nastasović, Aleksandra",
year = "2013",
abstract = "Prevention and minimizing corrosion processes on steam generating equipment is highly important in the thermal power industry. The maintenance of feedwater quality at a level corresponding to the standards of technological designing, followed by timely respond to the fluctuation of measured parameters, has a decisive role in corrosion prevention. In this study, the comprehensive chemical control of feedwater quality in 210 MW Thermal Power Plant (TPP) was carried out in order to evaluate its potentiality to assure reliable function of the boiler and discover possible irregularity that might be responsible for frequent boiler tube failures. Sensitive on-line and off-line analytical instruments were used for measuring key and diagnostic parameters considered to be crucial for boiler safety and performances. Obtained results provided evidences for exceeded levels of oxygen, silica, sodium, chloride, sulfate, copper, and conductivity what distinctly demonstrated necessity of feedwater control improvement. Consequently, more effective feedwater quality monitoring concept was recommended. In this paper, the explanation of presumable root causes of corrosive contaminants was given including basic directions for their maintenance in proscribed limits.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Applied Thermal Engineering",
title = "Extensive feedwater quality control and monitoring concept for preventing chemistry-related failures of boiler tubes in a subcritical thermal power plant",
pages = "694-683",
number = "1-2",
volume = "59",
doi = "10.1016/j.applthermaleng.2013.06.028"
}

Vidojković, S., Onjia, A., Matović, B., Grahovac, N. N., Maksimović, V.,& Nastasović, A.. (2013). Extensive feedwater quality control and monitoring concept for preventing chemistry-related failures of boiler tubes in a subcritical thermal power plant. in Applied Thermal Engineering
Pergamon-Elsevier Science Ltd, Oxford., 59(1-2), 683-694.
https://doi.org/10.1016/j.applthermaleng.2013.06.028

Vidojković S, Onjia A, Matović B, Grahovac NN, Maksimović V, Nastasović A. Extensive feedwater quality control and monitoring concept for preventing chemistry-related failures of boiler tubes in a subcritical thermal power plant. in Applied Thermal Engineering. 2013;59(1-2):683-694.
doi:10.1016/j.applthermaleng.2013.06.028 .

Vidojković, Sonja, Onjia, Antonije, Matović, Branko, Grahovac, Nebojša N., Maksimović, Vesna, Nastasović, Aleksandra, "Extensive feedwater quality control and monitoring concept for preventing chemistry-related failures of boiler tubes in a subcritical thermal power plant" in Applied Thermal Engineering, 59, no. 1-2 (2013):683-694,
https://doi.org/10.1016/j.applthermaleng.2013.06.028 . .

TY  - CONF
AU  - Vidojković, Sonja
AU  - Onjia, Antonije
AU  - Nastasović, Aleksandra
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7208
PB  - Beograd : Udruženje za tehnologiju vode i sanitarno inženjerstvo
C3  - Kvalitet vode u sistemima vodovoda i vode u industriji, Beograd, 08-09. novembar 2012. godine
T1  - Parametri kvaliteta napojne vode i pravci optimizacije hemijskog monitoringa u cilju prevencije oštećenja cevnog sistema kotla u termoelektranama
T1  - Parameters of Feedwater Quality and Directions for Monitoring Concept Optimization to Prevent Boiler Tube Failures in Thermal Power Plants
EP  - 197
SP  - 193
UR  - https://hdl.handle.net/21.15107/rcub_technorep_7208
ER  - 

@conference{
author = "Vidojković, Sonja and Onjia, Antonije and Nastasović, Aleksandra",
year = "2012",
publisher = "Beograd : Udruženje za tehnologiju vode i sanitarno inženjerstvo",
journal = "Kvalitet vode u sistemima vodovoda i vode u industriji, Beograd, 08-09. novembar 2012. godine",
title = "Parametri kvaliteta napojne vode i pravci optimizacije hemijskog monitoringa u cilju prevencije oštećenja cevnog sistema kotla u termoelektranama, Parameters of Feedwater Quality and Directions for Monitoring Concept Optimization to Prevent Boiler Tube Failures in Thermal Power Plants",
pages = "197-193",
url = "https://hdl.handle.net/21.15107/rcub_technorep_7208"
}

Vidojković, S., Onjia, A.,& Nastasović, A.. (2012). Parametri kvaliteta napojne vode i pravci optimizacije hemijskog monitoringa u cilju prevencije oštećenja cevnog sistema kotla u termoelektranama. in Kvalitet vode u sistemima vodovoda i vode u industriji, Beograd, 08-09. novembar 2012. godine
Beograd : Udruženje za tehnologiju vode i sanitarno inženjerstvo., 193-197.
https://hdl.handle.net/21.15107/rcub_technorep_7208

Vidojković S, Onjia A, Nastasović A. Parametri kvaliteta napojne vode i pravci optimizacije hemijskog monitoringa u cilju prevencije oštećenja cevnog sistema kotla u termoelektranama. in Kvalitet vode u sistemima vodovoda i vode u industriji, Beograd, 08-09. novembar 2012. godine. 2012;:193-197.
https://hdl.handle.net/21.15107/rcub_technorep_7208 .

Vidojković, Sonja, Onjia, Antonije, Nastasović, Aleksandra, "Parametri kvaliteta napojne vode i pravci optimizacije hemijskog monitoringa u cilju prevencije oštećenja cevnog sistema kotla u termoelektranama" in Kvalitet vode u sistemima vodovoda i vode u industriji, Beograd, 08-09. novembar 2012. godine (2012):193-197,
https://hdl.handle.net/21.15107/rcub_technorep_7208 .

TY  - CONF
AU  - Vidojković, Sonja
AU  - Onjia, Antonije
AU  - Nastasović, Aleksandra
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7210
PB  - Beograd : Udruženje inženjera Srbije za koroziju i zaštitu materijala
C3  - Exchanging Experiences in the Fields of Corrosion, Materials and Enviromental Protection : proceedings / XIV YuCorr International Conference = Razmena iskustava u oblastima korozije, zaštite materijala i životne sredine : knjiga radova / XIV YuCorr Jugoslovenska korozija Međunarodna konferencija 17-20. April, 2012, Tara
T1  - Contribution of Electrostatic Interaction in Prevention and Controlling Deposition of Corrosion Products on Heat
EP  - 136
SP  - 133
UR  - https://hdl.handle.net/21.15107/rcub_technorep_7210
ER  - 

@conference{
author = "Vidojković, Sonja and Onjia, Antonije and Nastasović, Aleksandra",
year = "2012",
publisher = "Beograd : Udruženje inženjera Srbije za koroziju i zaštitu materijala",
journal = "Exchanging Experiences in the Fields of Corrosion, Materials and Enviromental Protection : proceedings / XIV YuCorr International Conference = Razmena iskustava u oblastima korozije, zaštite materijala i životne sredine : knjiga radova / XIV YuCorr Jugoslovenska korozija Međunarodna konferencija 17-20. April, 2012, Tara",
title = "Contribution of Electrostatic Interaction in Prevention and Controlling Deposition of Corrosion Products on Heat",
pages = "136-133",
url = "https://hdl.handle.net/21.15107/rcub_technorep_7210"
}

Vidojković, S., Onjia, A.,& Nastasović, A.. (2012). Contribution of Electrostatic Interaction in Prevention and Controlling Deposition of Corrosion Products on Heat. in Exchanging Experiences in the Fields of Corrosion, Materials and Enviromental Protection : proceedings / XIV YuCorr International Conference = Razmena iskustava u oblastima korozije, zaštite materijala i životne sredine : knjiga radova / XIV YuCorr Jugoslovenska korozija Međunarodna konferencija 17-20. April, 2012, Tara
Beograd : Udruženje inženjera Srbije za koroziju i zaštitu materijala., 133-136.
https://hdl.handle.net/21.15107/rcub_technorep_7210

Vidojković S, Onjia A, Nastasović A. Contribution of Electrostatic Interaction in Prevention and Controlling Deposition of Corrosion Products on Heat. in Exchanging Experiences in the Fields of Corrosion, Materials and Enviromental Protection : proceedings / XIV YuCorr International Conference = Razmena iskustava u oblastima korozije, zaštite materijala i životne sredine : knjiga radova / XIV YuCorr Jugoslovenska korozija Međunarodna konferencija 17-20. April, 2012, Tara. 2012;:133-136.
https://hdl.handle.net/21.15107/rcub_technorep_7210 .

Vidojković, Sonja, Onjia, Antonije, Nastasović, Aleksandra, "Contribution of Electrostatic Interaction in Prevention and Controlling Deposition of Corrosion Products on Heat" in Exchanging Experiences in the Fields of Corrosion, Materials and Enviromental Protection : proceedings / XIV YuCorr International Conference = Razmena iskustava u oblastima korozije, zaštite materijala i životne sredine : knjiga radova / XIV YuCorr Jugoslovenska korozija Međunarodna konferencija 17-20. April, 2012, Tara (2012):133-136,
https://hdl.handle.net/21.15107/rcub_technorep_7210 .

TY  - CONF
AU  - Vidojković, Sonja
AU  - Onjia, Antonije
AU  - Nastasović, Aleksandra
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7181
AB  - One of the foremost concern in thermal power plants is the formation of deposits of corrosion products
in diverse areas of the water/ steam cycle. This deposition process causes local overheating and rupture
of boiler tubes, damages of turbines and other segments of power units, that ultimately leads to sizable
efficiency loss. The corrosion products are metal oxides usually present in colloidal form and tend to
precipitate on the heat exchange surfaces. In this paper a new approach to prevention deposit using
electrokinetic properties of colloidal particles is discussed. The mechanism of deposition formation is
outlined considering the role of electrostatic interactions between the steel wall surface and colloidal
particles. Furthermore, utilization of zeta potential data in deposit predicting and control is thoroughly
elucidated. It was inferred that described concept is applicable in power industry through changing
electrokinetic potential of colloidal particle what is attainable either by modification of structure of
adsorption layer of metal oxide particles or by altering pH of boiler water. It was stated that exploiting
surface properties of corrosion product for controlling and mitigation deposition in power chemistry
circuits may have a huge benefit for power plants improving their availability, reliability and
performances.
PB  - Belgrade : Society of Thermal Engineers of Serbia
C3  - Proceedings / International Conference Power Plants (2012), October 30 - November 02, 2012, Zlatibor, Serbia
T1  - Role of electrokinetic properties of corrosion products in prevention and controlling deposition in water/steam cycle of thermal power plants
T1  - Uloga elektrokinetičkih svojstava korozionih produkata u prevenciji i kontroli naslaga u ciklusu voda/para na termoelektranama
SP  - E2012-046
UR  - https://hdl.handle.net/21.15107/rcub_technorep_7181
ER  - 

@conference{
author = "Vidojković, Sonja and Onjia, Antonije and Nastasović, Aleksandra",
year = "2012",
abstract = "One of the foremost concern in thermal power plants is the formation of deposits of corrosion products
in diverse areas of the water/ steam cycle. This deposition process causes local overheating and rupture
of boiler tubes, damages of turbines and other segments of power units, that ultimately leads to sizable
efficiency loss. The corrosion products are metal oxides usually present in colloidal form and tend to
precipitate on the heat exchange surfaces. In this paper a new approach to prevention deposit using
electrokinetic properties of colloidal particles is discussed. The mechanism of deposition formation is
outlined considering the role of electrostatic interactions between the steel wall surface and colloidal
particles. Furthermore, utilization of zeta potential data in deposit predicting and control is thoroughly
elucidated. It was inferred that described concept is applicable in power industry through changing
electrokinetic potential of colloidal particle what is attainable either by modification of structure of
adsorption layer of metal oxide particles or by altering pH of boiler water. It was stated that exploiting
surface properties of corrosion product for controlling and mitigation deposition in power chemistry
circuits may have a huge benefit for power plants improving their availability, reliability and
performances.",
publisher = "Belgrade : Society of Thermal Engineers of Serbia",
journal = "Proceedings / International Conference Power Plants (2012), October 30 - November 02, 2012, Zlatibor, Serbia",
title = "Role of electrokinetic properties of corrosion products in prevention and controlling deposition in water/steam cycle of thermal power plants, Uloga elektrokinetičkih svojstava korozionih produkata u prevenciji i kontroli naslaga u ciklusu voda/para na termoelektranama",
pages = "E2012-046",
url = "https://hdl.handle.net/21.15107/rcub_technorep_7181"
}

Vidojković, S., Onjia, A.,& Nastasović, A.. (2012). Role of electrokinetic properties of corrosion products in prevention and controlling deposition in water/steam cycle of thermal power plants. in Proceedings / International Conference Power Plants (2012), October 30 - November 02, 2012, Zlatibor, Serbia
Belgrade : Society of Thermal Engineers of Serbia., E2012-046.
https://hdl.handle.net/21.15107/rcub_technorep_7181

Vidojković S, Onjia A, Nastasović A. Role of electrokinetic properties of corrosion products in prevention and controlling deposition in water/steam cycle of thermal power plants. in Proceedings / International Conference Power Plants (2012), October 30 - November 02, 2012, Zlatibor, Serbia. 2012;:E2012-046.
https://hdl.handle.net/21.15107/rcub_technorep_7181 .

Vidojković, Sonja, Onjia, Antonije, Nastasović, Aleksandra, "Role of electrokinetic properties of corrosion products in prevention and controlling deposition in water/steam cycle of thermal power plants" in Proceedings / International Conference Power Plants (2012), October 30 - November 02, 2012, Zlatibor, Serbia (2012):E2012-046,
https://hdl.handle.net/21.15107/rcub_technorep_7181 .