Yazar "Ozdemir C." seçeneğine göre listele
Listeleniyor 1 - 6 / 6
Sayfa Başına Sonuç
Sıralama seçenekleri
Öğe Investigation of heavy metals in main wastewater system of Konya and determination of accumulation on soil and plants(2006) Karatas M.; Dursun S.; Ozdemir C.; Argun M.E.Heavy metals in wastewater are quite important because of being toxic effect for public health. Wastewaters that contain heavy metals are generally caused by industries discharged, either after primary treatment or even no-treatment farmers in Konya use wastewater for irrigation that discharged into canal. This causes soil pollution also decreases plant quality. Heavy metals can reach to humans and animals and causes toxic effects through food-chain. The aim of this study is determining heavy metal accumulation on soils and plants that were irrigated by Konya main sewage system waters. Water and soil samples have been taken and heavy metal concentration analysed for six months time period and three months for plant samples. As the result of this study, heavy metal concentration in soil was higher than canal water. Heavy metal concentrations in wheat dose not reach to toxic affect level. © 2006. International Scientific Conference SGEM.Öğe Noise pollution measurements of Giresun city center at the black sea border(2007) Kalipci E.; Dursun Ş.; Ozdemir C.Recently, the noisy problem is increasing parallel to the improvement of the technology, which arises in the developed countries and makes the life difficult. It is recently one of crucial environmental problem that it is a sort of pollution, still least known and least struggled in our country. However, the investigations carried out on noise pollution have brought up that the matter is a problem of public health gaining importance increasingly. The aim of this study was noisy measurements, both to determine the noisy level of the Giresun City and to attract attention the noisy pollutions exposed in the centre centre. Based on the measurements of the noise level in the Giresun City, the charts were prepared in such way that they showed the noisy level of the streets, the districts, and the industries and it has been found that limit values were exceeded in the most spots.Öğe Removal of cod wi?th dichloromethane and tetrachlori?neethylene in the up-flow anaerobic sludge bed reactors (UASB)(2006) Ozdemir C.; Dursun S.; Şen N.Low concentration of chlorinated aliphatic compounds may be found in wastewater and contaminated soils from different industrial sources and in the air arisen from these type sources. Low levels of Volatile Organic Compounds (VOC)'s could be removed by adsorption, incineration or biofiltration methods. These methods have some disadvantages with low removal efficiency or high operation cost. Chlorine has been removed from the chlorinated aliphatic compounds by biological methods at anaerobic conditions. The aim of this research was investigation of biological treatment of VOC's in high flow speed reactors. Resistance capacity of micro-organisms was investigated in an upflow anaerobic sludge bed reactors (UASB) designed with automate control system by feeding with addition co-substrate, loading different ratio of organic matter, hydraulic retention time (HRT), at stable condition of COD, Volatile Fatty Acids (VFA), pH, alkalinity, temperature (35C°) etc. during the anaerobic treatment. In this research, the removal of DCM and PCE were approximately 60-70% and 98%. The removal of COD for DCM and PCE were approximately 75.5% and 97.4%. The decomposition ratios were calculated for DCM and PCE as 0.136 mg /gVSS.d and 0.305 mg /gVSS.d respectively. The highest methane ratio in the biogas production was 64% with DCM decomposition. Also inhibition concentrations for DCM and PCE (IC) in 24 hour were determinated as IC50; 42.6 and IC25; 16.8 and IC50; 24.9 and IC25; 6.7. The highest methane ratios in the obtained biogas were 64% for DCM, 82.8% for PCE. © 2006. International Scientific Conference SGEM.Öğe Road traffic noise in the city of konya modelling using by GIS(2006) Sahinkaya S.; Ozdemir C.; Yakar M.Noise is defined as unwanted sound and one of the threatening factors for human health. Noise effects on human health psychological, physiological and mentally such as interference with communication, hearing loss, sleep disturbance, stress, annoyance, effects on performance. Road traffic is one of the most important noise sources in residental areas. Subsource of the road noise are engine noise, tyre/road noise and aerodynamic noise. The level of noise from traffic is correlated with the traffic flow rate, the speed of the vehicles, and the proportion of heavy vehicles, which, together with motorcycles, tend to be about twice as loud as motor cars. The aim of this study is road traffic noise modelling and visualization based on GIS as a noise map. The noise maps are important to determine whether noise levels due to the roadway exceeds admissible levels according to Turkish Noise Regulation or not. The needed datas for noise map of road traffic were obtained from measurements along the Konya - Istanbul motorway. Road traffic noise was measured at different points on main road, where traffic flow is free, in the morning hours between 07.00 - 09.00, at noon hours between 11.00 - 14.00, in evening hours between 16.00 - 18.00 and at night hours between 22.00 - 24.00. The measured datas were included traffic volume and combination, the average speed of each type of vehicles, physical conditions of roadway, number of lanes, lane, shoulder and median width for main carriageway. The total traffic noise was analyzed from traffic volume of all vehicles types on both sides of mainroad. Noise propagation calculations were made by a developed visual basic application in the present study. Traffic noise model used in this study was developed by the US's Federal Highway Administration (FHWA). Geographical Information Systems (GIS) play an important role in noise mapping. An appropriate use of GIS in mapping noise effects makes it possible to optimise quality and efficiency of noise effect studies. So noise visualition was implemented by a commercial Georaphical Information Systems (GIS) in this study. As a result, noise pollution from roadway is visualized in the form of noise contours which provide a visual description of the soundscape. Futhermore, it's seen that noise was not admissible levels according to Turkish Noise Regulation. © 2006. International Scientific Conference SGEM.Öğe Road traffic noise pollution measurements of trabzon city centre at black sea border(2007) Kalipci E.; Dursun Ş.; Ozdemir C.Recently, the effect of noise pollution appeared due to noise increasing from highway transportation, especially, the great majorities of the people living in city centers. Identifying the noise levels have gained great importance in terms of planning of the cities, regions, industries and our being informed how degree the noisy pollution have influenced our daily life. Development plans performed in our country have been carried out without taking into consideration the factor of noise pollution. One of the biggest reasons of it has also resulted from not being available data, adequate and healthy. Therefore, with this study carried out, it has been attempted to determine how degree the people have been influenced from the noise. On the main streets and arteries in Centrum of Trabzon, making noise measurement for totally 100 spots, some charts showing the noisy levels in the city were prepared. It has been found that, on all spots, where the noise measurements were performed, limit values were exceeded, and the noisy levels had reached the size threatening the human health. In this study, it has been suggested that the results obtained were harmful regarding to human health and the measures to be taken were briefly indicated.Öğe Use of fenton's reagent for removal of pesticides from industrial wastewater(2007) Sahinkaya S.; Ozdemir C.; Karatas M.We report in this paper the preliminary results obtained during removal of pesticides from industrial wastewater by Fenton's reagent. Fenton process is attractive alternative to conventional oxidation processes in effluent treatment of recalcitrant compounds. The aim of this study is to evaluate the efficiency of fenton process for the reduction of COD in wastewaters from pesticide industry. Several parameters were also studied: dose of Fe+2 and H2O2. The process of pesticide removal from industrial wastewater using Fenton's reaction has been analysed by taking into consideration COD removal. The optimum ratio of [Fe2+] to [H2O2] was 1: 1,56 (mM/mM) at pH 3.0 and room temperature (20°C). 93 % COD removal was achieved when treated wastewater by Fenton's reagent.
