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Öğe An analysis of corporate social responsibility and its usefulness in catalysing ecosystem sustainability(Inderscience Enterprises Ltd, 2009) Topal, R. Seminur; Öngen, Atakan; Filho, Walter LealAlthough current definitions of sustainability do not specifically refer to the stability of systems, this has proven to be an elementary requirement for competent behaviour. This is based on the fact that future generations will be able to fulfil their needs if the ecological, economical, and social systems are adaptable and capable of surviving. In order to be viable in the long-term, products, functions and organisational structures need to be united with the biology of nature and human kind; they must be correspondingly developed. Ecological aspects have often dominated the discussion concerning sustainability. This paper examines the perspectives of 'ecosystem sustainability' and 'social responsibility' from the risk management system point of view. It outlines some of the elements to be considered in preserving and extending the protection of habitats and biological diversity and some of the means that may be used in order to promote the use of CSR to foster the cause of ecological sustainability.Öğe Copper and Cadmium Contents in Ground and Surface Water in Corlu, Turkey(Scibulcom Ltd, 2008) Öngen, Atakan; Dökmeci, H.; Çelik, Suna Özden; Şabudak, Temine; Kaykıoğlu, Gül; Dökmeci, I.Heavy metal Pollution is a quickly growing problem for water systems, Such as oceans, lakes, and rivers in the areas with intensive industry. There are several different ways that heavy metal pollution ends up in our oceans. lakes and bays. The four main ways are: burning heavy metal, heavy metal runoff, dumping or heavy metals, and tributary inflow. Roadways and automobiles are also considered to be one of the largest sources of heavy metals. Zinc, copper, and lead are three of the most common heavy metals released from road travel, accounting for at least 90 of the total metals in road runoff. Meanwhile. they are natural components of the Earth's crust. They can not be degraded or destroyed. To a small extent they enter Our bodies via food, drinking water and air. Heavy metals become dangerous when they tend to bioaccumulate. Since study area has been Under a heavy industrialisation period, alteration of natural water resources has been reported in the area. In order to evaluate the potential of this alteration heavy metal monitoring program was run in the area. In the region, drinking water is supplied by groundwater abstraction. Surface water has limited usage because of its low quality. Surface water has both organic and inorganic based Pollution related to uncontrolled agricultural and industrial activities. Both groundwater and Surface water samples were collected from over 30 sampling points. Cadmium and copper analyses were carried out via atomic absorption spectroscopy (AAS). Great variations in the results among the samples were recognised during analysis. Maximum concentrations for both cadmium and copper were determined in surface water samples as 202 ppb and 19 ppb, respectively. Analysis Of groundwater samples from municipal wells showed that copper and cadmium levels were under standards which Would harm people health.Öğe Determination of micro-elements in surface water resources(Destech Publications, Inc, 2007) Sahmurova, Aida; Öngen, Atakan; Elmaslar Özbaş, Emine; Balkaya, NilgünThe basic resources of microelements that are essential for human life. However, in larger or lower amounts, they may become important and critical. They may accumulate in biological systems and become a significant health hazard. Biochemical and physical adaptation of microorganisms is related to geophysical properties and the environmental factors in the surrounding habitat. Therefore many research studies have been conducted dealing microelements and their effect on ecosystems. In this study, heavy metal contamination in the samples taken from surface water resources in the Republic of Azerbaijan were examined. During the study, concentrations of 7 microelements (I, F, Cu, Co, Mn, Zn, Mo) in surface waters were determined. As microelement concentration of the water in the water springs varied from region to region due to the ion structure of the water, microelement concentrations are shown as minimums and maximums and the correlation between above-mentioned microelements was determined. This correlation was taken into account as an additional factor for occurrence of endemic illnesses.Öğe Determination of Nickel and Lead Contents in Soil and Plant in Corlu, Turkey(Scibulcom Ltd, 2008) Şabudak, Temine; Kaykıoğlu, Gül; Öngen, Atakan; Dökmeci, Ayşe Handan; Çelik, Suna Özden; Dökmeci, I.The extent of the environmental pollution derived from industrial activities has intensive adverse effects in Corlu, Turkey. In the study area industrialisation has been growing rapidly and uncontrolled since 1970's. Corlu has a great importance regarding its industrial improvement both for Thrace region and Turkey. This consequence has not yet been evaluated sufficiently in the view of environmental concerns. Due to environmental cycle, trace elements, emanating from atmospheric and industrial Pollution accumulate, in soil and affect the ecosystem nearby. These elements may accumulate in soil, collected in plant or infiltrated 10 ground water. If they accumulate in a plant the), may reach to food chain and become harmful for human life. Hence, the investigation of trace elements in soil and plant samples is very important in the point of environmental Pollution, especially for plants. In the present study, levels of Pb and Ni in soil and plant samples collected from Corlu, Turkey, were determined by flame atomic absorption spectrometry (FAAS). The maximum levels of trace elements were determined as 52.91 mg Pb kg(-1) and 40.68 mg Ni kg(-1) in soil and 80.90 mg Pb kg(-1) in plant parts. Phytotoxic Pb amount ill the some samples was observed. The nickel in plant samples was not in detectable limits for FAAS.Öğe Environmental Toxicity of Cadmium and Health Effect(Scibulcom Ltd, 2009) Dökmeci, Ayşe Handan; Öngen, Atakan; Dağdeviren, S.Environmental toxicology examines the fate and effects of contaminants in the environment. Exposures to heavy metals can affect human health both directly or indirectly by disrupting ecological systems that exist in rivers, lake, oceans, streams, wetlands, estuaries and other ecosystems. It is known that cadmium input to the aquatic environment through discharge of industrial waste, surface run off and deposition of cadmium also strongly absorbed onto sediments and soils. On the other hand, non-ferrous metal mines and human activities such as using phosphate fertilisers, burning coal, iron alloys, steel and cement and disposing household waste, represent a major source of cadmium release to the aquatic ecosystems. Cadmium can easily entered into the body by food chain, drinking water, smoking a cigarette or even breathing the air. Acute and chronic exposure to cadmium in both human and animals results in health diseases. Cadmium was classified as a potential human carcinogen under the EPA (1996) cancer guidelines. The aim of this study was to review the effect of cadmium on human health and ecosystem. In this study, the effects of cadmium on vacating, digestion, and digestive system was reported. It was observed that cadmium has caused kidney disease, severely irritated the stomach, vomiting and diarrhea, sometimes even sudden deaths.Öğe Heavy metal concentration in deepwater rose shrimp species (Parapenaeus longirostris, Lucas, 1846) collected from the Marmara Sea Coast in Tekirdag(Springer, 2014) Dökmeci, Ayşe Handan; Yıldız, T.; Öngen, Atakan; Sivri, N.Zn, Cd, Cr, Hg, As (total), Cu, Pb, and Ni levels of the deepwater rose shrimp (Parapenaeus longirostris, Lucas 1846), which were collected from the Tekirdag coast of the Marmara Sea, were evaluated. The Marmara Sea is the recipient of discharges from both land-based sources and the Black Sea Bosphorus stream. There are large numbers of anthropogenic activities in the coastal region of the northern Marmara Sea that include urban effluent, discharges from touristic resorts, agricultural runoff, fishing, and transportation. Heavy metal contamination of water resources may cause critical health problems for the people living around these water bodies. In deepwater rose shrimp (P. longirostris), the highest concentration level detected for Zn was 22.4 +/- 24.4 mg/kg in winter 2012, Cd 0.106 +/- 0.01 mg/kg in summer 2012, Cr 0.77 +/- 0.05 mg/kg in winter 2012, Hg 0.18 +/- 0.04 mg/kg in summer 2011, As 9.93 +/- 1.4 mg/kg in spring 2012, Cu 25.48 +/- 0.3 mg/kg in winter 2012, Pb 2.12 +/- 0.8 mg/kg in spring, and Ni 19.25 +/- 7.1 mg/kg in spring. The values of heavy metal analysis were compared to both the Turkish Food Codex (TFC) limits and international standards for human consumption. The Pb, As, and Cu levels were found to be higher than the maximum allowable limits.Öğe Microelements in the Lands of the Azerbaijan Republic(Scibulcom Ltd, 2006) Sahmurova, Aida; Öngen, AtakanMicroelements are necessary to support life. However, in larger or lower amounts, they may become more important and critical. They may be accumulated in biological systems and become a significant health hazard. The main scope of this study was to determine the amount of microelements in soil in order to evaluate the relation between microelement content of soil and its health effect in some regions in the Republic of Azerbaijan. Endemic health problems are widespread in the region. For instance, endemic goitre, a type of goitre that is associated with dietary iodine deficiency, has been seen frequently in some regions of the Azerbaijan and many researhers have been working on the relation between microelement content of soil and endemic goitre. During the study, six main regions were determined to collect soil samples and those sites were devided into sub-regions. Totally, 161 soil samples were collected and microelements such as cobalt(Co), copper(Cu), fluorine(F), manganese(Mn), molybdenum(Mo), zinc(Zn) and iodine(I) were measured and the results were compared with the samples where no endemic goitre were noticed. Measurements were also compared with the standards in order to evaluate the magnitude of the problem. Results revealed that the amount of microelements in the Republic of Azerbaijan soil samples varied in a large range even in the different parts of the same region. Especially, the amount of iodine in soil sample was measured low (average, 1.18-7.43 mg/kg) where endemic goitre was freguently seen. It is also revealed that not only the deficiency of iodine was a reason for endemic diseases but also other microelements take role in the existence of such problems in the Republic of Azerbaijan.Öğe Prediction of tropospheric ozone concentration with Bagging-MLP method(2023) Cihan, Pınar; Ozcan, Husayin Kurtulus; Öngen, AtakanHuman activities are linked to atmospheric pollution and are affected by economic development. Ground-level ozone has become an important and harmful pollutant for many countries, adversely affecting public health. As there is a limited number of on-site measurements, alternative methods are required to accurately estimate ozone concentrations. In this study, a database containing annual average concentrations of CO2, N2O, CO, NOx, SOx, and O3, covering the years 2008-2018 for ten countries in Europe, was created. Ten different artificial intelligence regression methods were developed to predict the O3 concentration using these variables. The predictive performance of the developed artificial intelligence models was compared using the coefficient of determination, mean absolute error, root mean square error, and relative absolute error criteria. Experimental results show that the Bagging-MLP method has a better prediction performance than other models in ozone concentration estimation, with an R2 value of 0.9994, mean absolute error of 24.67, root mean square error of 33.85, and relative absolute error of 2.9%. This study shows that the O3 concentration can be estimated very close to the actual value by using the Bagging-MLP method, one of the artificial intelligence methods.Öğe Sustainable technologies for recycling and reuse: an overview(Springer Heidelberg, 2018) Meriç, Süreyya; Selçuk, Hüseyin; Onat, Burcu; Öngen, Atakan[No Abstract Available]Öğe Tekirdağ'da Çorlu ilinde endüstriyel alanlardaki ğır metal kirliliğinin çevresel ve insan sa ğlığı açısından etkileri(2017) Dökmeci, Ayşe Handan; Çelik, Suna Özden; Kaykıo, Gül; Öngen, AtakanToprak, bitkilerin makro ve mikro elementlerini sağladığı ana karadır. Özellikle tarıma elverişli toprakların yakınında kurulan sanayi tesisleri çevresel ve insan sağlığı açısından büyük tehdit oluşturmaktadır. Tekirdağ'ın Çorlu ilçesinde bulunan sanayi tesislerinin oluşturduğu kirlilik yüzey suyunun da kalitesini etkilemiş ve bunun sonucunda toprak da etkilenmibüyük oranda etkilemektedir. Çalışmamızda 2006- 2007 yılları arasında sanayinin yoğun olduğu Çorlu ilinden 3 aylık periyotlar şeklinde toprak numuneleri toplanmıştır.Sanayi atık sularının deşarj edildiği yüzey sularına yakın 7 noktadan toplanan toprak numunelerinde Pb, Cu, Zn, Fe, Mn, Ni, Co, Cd ve Cr miktarları Alevli Atomik Absorbsiyon Spektrometresi (FAAS) ile belirlenmiştir. Tespit edilen ağır metal miktarlarını ulusal ve uluslararası izin verilebilir sınır değerlerle karşılaştırarak de ğerlendirilmiştir. Özellikle Türkgücü köyü, Çorlu deresi (Sinop Mah.) ve Velimeşe Çerkezköy Organize Sanayi Bölgesi (OSB) civarından toplanan toprak numunelerinde Zn, Cr, Cd ve Ni içeriği çoğunlukla Toprak Kirliliği Kontrol Yönetmeliği (TKKY) EKIa'da belirtilen sınır demetallerin varlığı, tarımsal üretime, yer altı suyu kalitesine ve dolaylı yoldan insan sağlığına olumsuz etkide bulunabilir. Bu yüzden ağır metaller tarafından kirlenmiş toprağın iyileştirilmesi, pestisit kullanımının kontrolü ve en önemlisi ağır metalleri giderebilecek arıtma tesislerinin dizaynını yaparak antropojenik kaynaklı atık suların arıtılarak alıcı ortamlara verilmesini sağlamaktırÖğe The 2nd International Conference on Recycling and Reuse, held on June 4-6, 2014, in Istanbul, Turkey(Taylor & Francis Inc, 2016) Meriç, Süreyya; Selçuk, Hüseyin; Sivri, Nuket; Aydın, Serdar; Onat, Burcu; Şahin, Ulku Alver; Öngen, Atakan[No Abstract Available]Öğe The impact of social responsibility on the environment(Ashgate Publishing Ltd, 2008) Topal, R. Seminur; Öngen, Atakan[No abstract available]Öğe Treatability of Pesticide Industry Effluent By Zonation and Coagulation: A Real Effluent Investigation(Scibulcom Ltd, 2012) Öngen, Atakan; Güneş, Yalçın; Talinli, I.Chemical oxidation of hazardous liquid waste derived from a pesticide-formulating industry was studied by applying ozone alone and together with coagulation process. Chemical oxidation has been applied to many different fields in wastewater treatment. Pesticide pollution of environmental waters is a pervasive problem with widespread ecological consequences. In the study, ozone was applied both before and after coagulation process to evaluate the most effective treatment combination for the selected industry effluent. Conventional parameters such as pH, TSS (total suspended solids), oil and grease, COD (chemical oxygen demand), and soluble COD were analysed to monitor the efficiencies of each experimental step. Coagulation experiments were conducted by using FeCl3 and Al-2(SO4)(3). 14H(2)O as the coagulant dosages varied between 500-3000 mg/l. Ozone gas was supplied with the dosage of 477 mg/min and 5 l/min ozone gas flux rate. Series of experimental investigations showed that COD was reduced approximately 60% after ozonation alone while it decreased about 90% after ozonation following coagulation with ferric chloride. However, the results obtained by the ozonation and chemical treatment with alum were less effective with removal efficiency of about 70%. The complete process of ozonation and coagulation was effective to reduce the pollution potential of the liquid hazardous waste for further treatment facilities.
