Yazar "Karakaya, Nusret" seçeneğine göre listele
Listeleniyor 1 - 7 / 7
Sayfa Başına Sonuç
Sıralama seçenekleri
Öğe Cost of Solid Waste Management: A Case of Bolu(Yildiz Technical Univ, 2011) Tınmaz Köse, Esra; Karakaya, Nusret; Aslan, R. GülerNumerous studies concerning municipal solid waste management have been conducted in the literature, and there is a considerable accumulation of knowledge and experience about municipal solid waste management in Turkey. On the contrary, there are a few studies carried out about the cost of municipal solid waste management in Turkey. In this study, the cost of municipal solid waste management was investigated in the case of Bolu, and results were presented in the paper. The stream of municipal solid waste in the province of Bolu is periodically collected and distributed to the waste recycling center. Once papers, metals, and plastics that can be recycled are sorted out in the waste sorting center, the remaining solid waste is stored at the sanitary landfill. The cost of municipal solid waste management practice in Bolu is determined as 33,51 TL/ton waste and 56% of which value is used for worker.Öğe Decision making, policy and financing(Springer, 2008) Wolflin, John P.; Russo, Rosemarie C.; Burak, Selmin; Karakaya, Nusret; Orbi, Abdellatif; Razinkovas, Arturas; Torun, Yasin[No Abstract Available]Öğe Novel Uses of Red Mud in Textile Wastewater Treatment, Dyeing, and Concrete Production(Gh Asachi Technical Univ Iasi, 2015) Yıldız, Aylin; Öztaş, Merve; Karakaya, Nusret; Evrendilek, Fatih; Akyıldız, Aylin; Ağırgan, Ahmet Özgür; Çelik, Suna Özden; Akyıldız, Aylin; Tınmaz-Köse, Esra; Şişman, Can Burak; Kaykıoğlu, GülOptimum conditions for the reusability of red mud were explored testing both dried and HCl-activated red mud as a coagulant in the treatment of dyehouse wastewater. Treated dyehouse wastewater was further reused in five dyebaths with different mixture ratios of distilled water (D) and treated wastewater (W) for dyeing fabrics at three color strengths of three reactive dyes. Sludge obtained from the optimum dosage of HCl-activated red mud was tested for its reuse potential in the production of concrete. The best color removal efficiency occurred using 1 g/L dried red mud at pH 12 and 120 mg/L HCl-activated red mud at pH 12. The best color yield was obtained with a textile dyeing treatment of D50/W50 with 2% color strength when dyehouse wastewater was treated with HCl-activated red mud. Concrete samples with an addition ratio of 2% HCl-activated red mud sludge had the slightly highest compressive strength. The reuses of HCl-activated red mud and its sludge appear to be a promising alternative to some conventional treatments of dye wastewater, dyeing, and concrete production.Öğe Removal of cod from oil recovery industry wastewater by the advanced oxidation processes (AOP) based on H2O2(Global Network Environmental Science & Technology, 2008) Dinçer, Ali Rıza; Karakaya, Nusret; Güneş, Elçin; Güneş, YalçınThe combinations of H2O2/Fe, UV/H2O2/Fe and UV/H2O2 process were investigated on treatment of oil recovery industry wastewater. Treatment of oil recovery industry wastewater, a typical high pollution strength industrial wastewater (chemical oxygen deman (COD): 21000 mg l(-1), biological oxygen demand (BOD): 8000 mg l(-1), oil and grease:1140 mg l(-1), total dissolved solids (TDS): 37000 mg l(-1), total suspended solids: 2580 mg l(-1)), was carried out by batch oxidation processes. The optimal mass ratio for H2O2/Fe+2 yielding the highest COD removal-was found to be 8.658 corresponding to 200.52 g 1(-1) H2O2 and 23.16 g l(-1) Fe+2 concentrations for 60 minutes reaction time. Fenton process gave a maximum COD reduction of 86% (from 21000 to 2980 mg l(-1)) and the combination of UV/H2O2 gave a COD reduction of 39% (from 21000 to 12730). The percentage of removal, after the total reaction time (3.5h), H2O2: 8.4 g l(-1) and Fe+2 : 0.05g l(-1), in the photo Fenton process, corresponded to 81 % of the total initial COD (4200 mg l(-1)). The oxidative ability of the UV/Fe+2 /H2O2 process (81 %) was greater than that of the UV/H2O2 process (55%) for 80% diluted wastewater. COD removal efficiency for UV/H(2)O2 process (COD/H2O2=1/2 (w/w)) was 90%, 55%, and 39 when initial COD was 1050, 4200, and 21000 mg l(-1), respectively, whereas COD removal was 943, 2320, and 8270 mg l(-1), respectively.Öğe Setting Measures for Tackling Agricultural Diffuse Pollution of Küçük Menderes Basin(2021) Çankaya, Burhan Fuat; Güneş, Elçin; Görgün, Erdem; Karakaya, Nusret; Gökdereli, Gökçen; Tanık, Ayşegül; Karaaslan, YakupWe explained the methodology used in setting the basic and supplementary measures for diffuse pollutants at Küçük Menderes Basin. As the majority of diffuse pollutants arise from livestock breeding and agricultural activities, we focused to propose measures regarded with tackling the pollution from agricultural activities. The types and distribution of diffuse loads were expressed by total nitrogen and phosphorous parameters. We used the results of a yearlong surface water quality monitoring involving physico-chemical, chemical and biological parameters with specific pollutants and priority substances, set in the European Union Water Framework Directive as the AquaTool input data. The AquaTool model was run for attaining the outcomes of a series of measures determined according to the ecological sensitivity of each water body. The removal efficiency of pollution loads provided by the best management practices in agricultural activities and livestock breeding were compiled from literature, and typical removal rates were further determined for the basin. We produced nine alternative scenarios at first cycle for determining compliance measures for mitigating point and diffuse sources of pollution in surface water bodies, and water quality improvements observed in the Model were reported. A number of exemptions were defined for some of the water bodies that could not achieve the environmental objectives at the end of first implementation cycle. 759 proposed measures for tackling diffuse pollution were 81% of the total measures considered. Additionally, the measures for mitigating diffuse agricultural pollution were almost equal to half of the diffuse pollutant measures, and 40% of the overall measures listedÖğe Utility of a source-related matrix in basin management studies: a practice on a sub-Basin in Turkey(Springer Heidelberg, 2021) Hanedar, Asude; Tanik, Ayşegül; Girgin, Emine; Güneş, Elçin; Karakaya, Nusret; Gorgun, Erdem; Dikmen, BilalAccording to the water framework directive (WFD), the chemical status should be determined for each water body in a basin through monitoring and evaluation studies, and the gap between the status of water bodies and good water status should be revealed in river basin management plans. In this context, the methodology starting with the evaluation of the monitoring results of the priority substances (PSs) until the end of determining the measures to achieve good condition in surface waters was given in this study. The key aim was to provide a useful methodology defined as a matrix for determining the sources of pollutants that caused this gap. This matrix was applied to the most polluted sub-basin of Kucuk Menderes Basin located on the western part of the Turkey. Monitoring studies were carried out in 21 water bodies for a 1-year period for 45 PSs and monitoring results were compared with environmental quality standards (EQS). It was determined that 13 of 45 PSs in 15 water bodies exceeded the EQS. The common PSs in the basin were lead, nickel, fluoranthene, benzo(a)pyrene, C10-13 chloroalkanes, and 4-nonylphenols and average rates of exceeding the EQS were 58.3%, 36.4%, 91.5%, 99.9%, 74.8%, and 49.4%, respectively. The detailed emission inventory of each water body in the basin has been made. Potential sources of PSs were searched via the matrix formed and a total number of 420 basic and supplementary measures were proposed to improve the water quality of the sub-basin.Öğe Utilizing aluminum etching wastewater for tannery wastewater coagulation: performance and feasibility(Taylor & Francis Inc, 2016) Gungor, Kerem; Karakaya, Nusret; Güneş, Yalçın; Yatkin, Sinan; Evrendilek, FatihThe main objective of this study was to investigate the feasibility of utilizing etching wastewater (EW) of aluminum (Al) coating industry as an alum substitute in industrial wastewater treatment. Our hypothesis was that Al-rich EW could be an effective substitute for commercial liquid alum used in a nearby (<10km) tannery wastewater treatment plant (Corlu, Turkey). Bench-scale alum and EW jar tests along with an economic analysis were performed to test this hypothesis. Jar test results conducted using identical pH and Al doses showed that Al-rich EW performed similar to alum in terms of chemical oxygen demand (COD), suspended solids (SS), and turbidity removal. Regardless of its origin (alum or EW), 1 g of Al approximately removed 30g COD and 20g SS via a combined effect of coagulation and plain settling. Commercial alum and EW removed more than 95% of COD and turbidity; 60% of total COD from the tannery wastewater. Preliminary cost analysis showed that coagulant expenditure could be reduced by 40% if alum was substituted with EW.
