Dr. Ferhat Karaca, is an Associate Professor at Civil Engineering Department in School of Engineering at Nazarbayev University. He has many peer-reviewed publications in the top scientific journals in the field (e.g. Atmospheric Environment, Science of the Total Environment, Energy). He focuses on the fields of air quality modeling, air pollution forecasting, pollution prevention, and sustainable infrastructure research. His Ph.D. study was related to atmospheric pollution and source apportionment of the airborne particles. After his Ph.D., Dr. Karaca continued to work as Senior Researcher, Assistant Prof and Associate Prof Positions in several institutions located in Turkey, Germany, Finland, UK and USA. Dr Karaca involved to development of several environmental and air quality models to predict and explain the natural behavior of environmental pollution. He is interested in “Environmental Management’, “Sustainable Development and Assessment”, “Green Construction” and “Civil Infrastructure Designs and Developments for Future Cities”.
This study evaluates the toxicity and genotoxicity levels of atmospheric particulate matter (PM) ... more This study evaluates the toxicity and genotoxicity levels of atmospheric particulate matter (PM) samples collected at several locations of a megacity (Istanbul, Turkey) with different urban and industrial characteristics. The ambient air samples, in the form of a coarse fraction of inhalable particulates, PM2.5-10, were collected on Teflon filters using a passive sampling method on a monthly basis during a one-year period. Later, they were extracted into both the lipophilic and hydrophilic phases using dimethyl sulfoxide (DMSO) and ultra-pure water, respectively. The obtained aqueous extracts were tested for acute toxicity and genotoxicity using the photo-luminescent bacterium Vibrio fischeri Microtox(®) and SOS Chromotest(®) assays, respectively. Statistically significant differences greater than background levels were obtained in both measurements, indicating the presence of toxic substances absorbed on particulate matter. The PM2.5-10 extracts identified significant seasonal and ...
The gaseous and nonvolatile particulate matter (PM) emissions of two T56-A-15 turboprop engines o... more The gaseous and nonvolatile particulate matter (PM) emissions of two T56-A-15 turboprop engines of a C-130H aircraft stationed at the 123rd Airlift Wing in the Kentucky Air National Guard were characterized. The emissions campaign supports the Strategic Environmental Research and Development Program (SERDP) project WP-1401 to determine emissions factors from military aircraft. The purpose of the project is to develop a comprehensive emissions measurement program using both conventional and advanced techniques to determine emissions factors of pollutants, and to investigate the spatial and temporal evolutions of the exhaust plumes from fixed and rotating wing military aircraft. Standard practices for the measurement of gaseous emissions from aircraft have been well established; however, there is no certified methodology for the measurement of aircraft PM emissions. In this study, several conventional instruments were used to physically characterize and quantify the PM emissions from the two turboprop engines. Emissions samples were extracted from the engine exit plane and transported to the analytical instrumentation via heated lines. Multiple sampling probes were used to assess the spatial variation and obtain a representative average of the engine emissions. Particle concentrations, size distributions, and mass emissions were measured using commercially available aerosol instruments. Engine smoke numbers were determined using established Society of Automotive Engineers (SAE) practices, and gaseous species were quantified via a Fourier-transform infrared-based gas analyzer. The engines were tested at five power settings, from idle to take-off power, to cover a wide range of operating conditions. Average corrected particle numbers (PNs) of (6.4-14.3) x 10(7) particles per cm3 and PN emission indices (EI) from 3.5 x 10(15) to 10.0 x 10(15) particles per kg-fuel were observed. The highest PN EI were observed for the idle power conditions. The mean particle diameter varied between 50 nm at idle to 70 nm at maximum engine power. PM mass EI ranged from 1.6 to 3.5 g/kg-fuel for the conditions tested, which are in agreement with previous T56 engine measurements using other techniques. Additional PM data, smoke numbers, and gaseous emissions will be presented and discussed.
Data Revues 12962074 V14i2 S129620741200091x, Mar 25, 2013
ABSTRACT This paper presents the most comprehensive study conducted so far for evaluating the cor... more ABSTRACT This paper presents the most comprehensive study conducted so far for evaluating the corrosion levels related to air quality and the seasonal pollutant (NO2, SO2, and O3) exposure levels over 50 monitoring stations distributed on the historical peninsula of Istanbul. Istanbul has been one of the most important as well as most populated major cities in the world during all the ages. Today, owing to its historical and cultural structures, the historical peninsula of Istanbul has become an attraction point of tourism and is one of the most unique and ancient urban settlement areas in the world. However, the cultural heritage stocks in the peninsula are under the risk of corrosion and critical air pollution level exposure caused by chemical reactions under the multi-pollutant situation of the air pollutants, principally SO2, NO2, and O3, as well as meteorological factors, e.g. humidity and temperature. In the present study, seasonal exposure of NO2, SO2, and O3 pollutants were monitored using passive samplers, and corrosion attack values were calculated using dose-response functions. The geostatistical analyst tool of ArcGIS® 9.1 was then used for generating GIS-based surface pollution and corrosion distribution maps. Subsequently, two hotspots were clearly identified, the tip of the peninsula and the area around the Ataturk Bridge, which fall under serious corrosion risks for copper, cast bronze, and carbon steel materials. However, no significant risk was identified for cultural heritage materials made of limestone in the peninsula.
International Journal of Environment and Pollution, 2006
... Biographical notes: Ferhat Karaca received his MSc in Department of Environmental Engineering... more ... Biographical notes: Ferhat Karaca received his MSc in Department of Environmental Engineering, Fatih University, Turkey. He is a Lecturer at Fatih University, Department of Environmental Engineering since 2002 and currently a Doctoral Candidate at the Yildiz Technical ...
International Journal of Environment and Pollution, 2010
... Biographical notes: Ferhat Karaca has been a Lecturer at Fatih University&#x2... more ... Biographical notes: Ferhat Karaca has been a Lecturer at Fatih University's Department of Environmental Engineering since 2002. ... Engineering, Fatih University, Turkey, in 2000 and PhD degree from the Department of Environmental Engineering, Yıldız Technical University ...
ABSTRACT The identification of risk factors and levels for cultural heritage collections in museu... more ABSTRACT The identification of risk factors and levels for cultural heritage collections in museums, archives, and libraries is an important part of their risk management plans. Air pollutants are some of the most important risk factors, and their synergic impacts on material deformations are well known; thus, they have become important criteria in collection risk management plans. Pollution levels and their potential sources should be identified, monitored, and assessed within such risk management plans. Although pollution identification and monitoring methods are well-known practices, the assessment methodologies are not yet sufficiently developed. In this study, a novel air pollution condition indexing assessment method based on an analytical hierarchy process (AHP), the so-called Air Quality Risk Condition Index (AQRCI), is suggested. It quantifies the relative potential synergic impacts (e.g., soiling and color change, salt crystallization, metal corrosion, biodegradation, swelling/shrinkage, loss of strength, cracking, and embrittlement) of measured pollution levels on collection materials in any selected location. The proposed method is based on quantitative (gaseous and particulate pollutant levels) and qualitative (pairwise comparison scores for associated risks) data. Dolmabahçe Palace was selected as a study site, and the proposed AQRCI method was used to present the relative risk levels for five different categories in several indoor locations where the Dolmabahçe Palace collections are being presented.
In this study PM10 profile of Istanbul atmosphere was investigated. The main scope of this study ... more In this study PM10 profile of Istanbul atmosphere was investigated. The main scope of this study is to determine the effects of long-range PM10 transport and/or regional PM10 transport to Istanbul. For this purpose PM10 concentration data of 10 air quality monitoring stations belonging to Istanbul Metropolitan Municipality (IMM) were examined. First of all the effects of local sources on
9 Kasım 1937 tarihli TBMM Baş-kanlık Divan kararıyla Güzel Sanatlar Akademisi'ne (Mimar Sinan... more 9 Kasım 1937 tarihli TBMM Baş-kanlık Divan kararıyla Güzel Sanatlar Akademisi'ne (Mimar Sinan Güzel Sanatlar Üniversitesi) Türk Resim ve Heykel Müzesi ola-rak kullanılmak üzere devredilen Dolmabahçe Sarayı Veliaht Dairesi, TBMM Başkanlık Divanı'nın yerin-de inceleme yapmasından sonra, "Dolmabahçe Sarayı'nın ayrılmaz bir parçası konumunda olması ve en önemli kültür miraslarımızdan birinin üniversite tarafından gerekli bakımlarının yapılmadığından, tah-ribata uğraması nedeniyle", 6 Ocak 2012 tarihli TBMM Başkanlık Divanı 12 no.lu kararıyla, Üniversite'ye yapılan tahsise ilişkin söz konusu kararı yürürlükten kaldırmıştır. Veliaht Dairesi'nin içinde bu-lunan eşyalar ile Dolmabahçe Sarayı'nda bulunan tabloların bir kısmı ise, Bakanlar Kurulu kararı uyarınca TBMM Katib-i Umumiliği tarafından, 14 Aralık 1938 tarih ve 3915/3003 sayıyla Türk Resim ve Heykel Müzesi Müdürlüğü'ne dev-redilmiştir.* * İlgili Bakanlar Kurulu kararı TBMM Katib-i Umumiliği'n...
This study evaluates the toxicity and genotoxicity levels of atmospheric particulate matter (PM) ... more This study evaluates the toxicity and genotoxicity levels of atmospheric particulate matter (PM) samples collected at several locations of a megacity (Istanbul, Turkey) with different urban and industrial characteristics. The ambient air samples, in the form of a coarse fraction of inhalable particulates, PM2.5-10, were collected on Teflon filters using a passive sampling method on a monthly basis during a one-year period. Later, they were extracted into both the lipophilic and hydrophilic phases using dimethyl sulfoxide (DMSO) and ultra-pure water, respectively. The obtained aqueous extracts were tested for acute toxicity and genotoxicity using the photo-luminescent bacterium Vibrio fischeri Microtox(®) and SOS Chromotest(®) assays, respectively. Statistically significant differences greater than background levels were obtained in both measurements, indicating the presence of toxic substances absorbed on particulate matter. The PM2.5-10 extracts identified significant seasonal and ...
The gaseous and nonvolatile particulate matter (PM) emissions of two T56-A-15 turboprop engines o... more The gaseous and nonvolatile particulate matter (PM) emissions of two T56-A-15 turboprop engines of a C-130H aircraft stationed at the 123rd Airlift Wing in the Kentucky Air National Guard were characterized. The emissions campaign supports the Strategic Environmental Research and Development Program (SERDP) project WP-1401 to determine emissions factors from military aircraft. The purpose of the project is to develop a comprehensive emissions measurement program using both conventional and advanced techniques to determine emissions factors of pollutants, and to investigate the spatial and temporal evolutions of the exhaust plumes from fixed and rotating wing military aircraft. Standard practices for the measurement of gaseous emissions from aircraft have been well established; however, there is no certified methodology for the measurement of aircraft PM emissions. In this study, several conventional instruments were used to physically characterize and quantify the PM emissions from the two turboprop engines. Emissions samples were extracted from the engine exit plane and transported to the analytical instrumentation via heated lines. Multiple sampling probes were used to assess the spatial variation and obtain a representative average of the engine emissions. Particle concentrations, size distributions, and mass emissions were measured using commercially available aerosol instruments. Engine smoke numbers were determined using established Society of Automotive Engineers (SAE) practices, and gaseous species were quantified via a Fourier-transform infrared-based gas analyzer. The engines were tested at five power settings, from idle to take-off power, to cover a wide range of operating conditions. Average corrected particle numbers (PNs) of (6.4-14.3) x 10(7) particles per cm3 and PN emission indices (EI) from 3.5 x 10(15) to 10.0 x 10(15) particles per kg-fuel were observed. The highest PN EI were observed for the idle power conditions. The mean particle diameter varied between 50 nm at idle to 70 nm at maximum engine power. PM mass EI ranged from 1.6 to 3.5 g/kg-fuel for the conditions tested, which are in agreement with previous T56 engine measurements using other techniques. Additional PM data, smoke numbers, and gaseous emissions will be presented and discussed.
Data Revues 12962074 V14i2 S129620741200091x, Mar 25, 2013
ABSTRACT This paper presents the most comprehensive study conducted so far for evaluating the cor... more ABSTRACT This paper presents the most comprehensive study conducted so far for evaluating the corrosion levels related to air quality and the seasonal pollutant (NO2, SO2, and O3) exposure levels over 50 monitoring stations distributed on the historical peninsula of Istanbul. Istanbul has been one of the most important as well as most populated major cities in the world during all the ages. Today, owing to its historical and cultural structures, the historical peninsula of Istanbul has become an attraction point of tourism and is one of the most unique and ancient urban settlement areas in the world. However, the cultural heritage stocks in the peninsula are under the risk of corrosion and critical air pollution level exposure caused by chemical reactions under the multi-pollutant situation of the air pollutants, principally SO2, NO2, and O3, as well as meteorological factors, e.g. humidity and temperature. In the present study, seasonal exposure of NO2, SO2, and O3 pollutants were monitored using passive samplers, and corrosion attack values were calculated using dose-response functions. The geostatistical analyst tool of ArcGIS® 9.1 was then used for generating GIS-based surface pollution and corrosion distribution maps. Subsequently, two hotspots were clearly identified, the tip of the peninsula and the area around the Ataturk Bridge, which fall under serious corrosion risks for copper, cast bronze, and carbon steel materials. However, no significant risk was identified for cultural heritage materials made of limestone in the peninsula.
International Journal of Environment and Pollution, 2006
... Biographical notes: Ferhat Karaca received his MSc in Department of Environmental Engineering... more ... Biographical notes: Ferhat Karaca received his MSc in Department of Environmental Engineering, Fatih University, Turkey. He is a Lecturer at Fatih University, Department of Environmental Engineering since 2002 and currently a Doctoral Candidate at the Yildiz Technical ...
International Journal of Environment and Pollution, 2010
... Biographical notes: Ferhat Karaca has been a Lecturer at Fatih University&#x2... more ... Biographical notes: Ferhat Karaca has been a Lecturer at Fatih University's Department of Environmental Engineering since 2002. ... Engineering, Fatih University, Turkey, in 2000 and PhD degree from the Department of Environmental Engineering, Yıldız Technical University ...
ABSTRACT The identification of risk factors and levels for cultural heritage collections in museu... more ABSTRACT The identification of risk factors and levels for cultural heritage collections in museums, archives, and libraries is an important part of their risk management plans. Air pollutants are some of the most important risk factors, and their synergic impacts on material deformations are well known; thus, they have become important criteria in collection risk management plans. Pollution levels and their potential sources should be identified, monitored, and assessed within such risk management plans. Although pollution identification and monitoring methods are well-known practices, the assessment methodologies are not yet sufficiently developed. In this study, a novel air pollution condition indexing assessment method based on an analytical hierarchy process (AHP), the so-called Air Quality Risk Condition Index (AQRCI), is suggested. It quantifies the relative potential synergic impacts (e.g., soiling and color change, salt crystallization, metal corrosion, biodegradation, swelling/shrinkage, loss of strength, cracking, and embrittlement) of measured pollution levels on collection materials in any selected location. The proposed method is based on quantitative (gaseous and particulate pollutant levels) and qualitative (pairwise comparison scores for associated risks) data. Dolmabahçe Palace was selected as a study site, and the proposed AQRCI method was used to present the relative risk levels for five different categories in several indoor locations where the Dolmabahçe Palace collections are being presented.
In this study PM10 profile of Istanbul atmosphere was investigated. The main scope of this study ... more In this study PM10 profile of Istanbul atmosphere was investigated. The main scope of this study is to determine the effects of long-range PM10 transport and/or regional PM10 transport to Istanbul. For this purpose PM10 concentration data of 10 air quality monitoring stations belonging to Istanbul Metropolitan Municipality (IMM) were examined. First of all the effects of local sources on
9 Kasım 1937 tarihli TBMM Baş-kanlık Divan kararıyla Güzel Sanatlar Akademisi'ne (Mimar Sinan... more 9 Kasım 1937 tarihli TBMM Baş-kanlık Divan kararıyla Güzel Sanatlar Akademisi'ne (Mimar Sinan Güzel Sanatlar Üniversitesi) Türk Resim ve Heykel Müzesi ola-rak kullanılmak üzere devredilen Dolmabahçe Sarayı Veliaht Dairesi, TBMM Başkanlık Divanı'nın yerin-de inceleme yapmasından sonra, "Dolmabahçe Sarayı'nın ayrılmaz bir parçası konumunda olması ve en önemli kültür miraslarımızdan birinin üniversite tarafından gerekli bakımlarının yapılmadığından, tah-ribata uğraması nedeniyle", 6 Ocak 2012 tarihli TBMM Başkanlık Divanı 12 no.lu kararıyla, Üniversite'ye yapılan tahsise ilişkin söz konusu kararı yürürlükten kaldırmıştır. Veliaht Dairesi'nin içinde bu-lunan eşyalar ile Dolmabahçe Sarayı'nda bulunan tabloların bir kısmı ise, Bakanlar Kurulu kararı uyarınca TBMM Katib-i Umumiliği tarafından, 14 Aralık 1938 tarih ve 3915/3003 sayıyla Türk Resim ve Heykel Müzesi Müdürlüğü'ne dev-redilmiştir.* * İlgili Bakanlar Kurulu kararı TBMM Katib-i Umumiliği'n...
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