Continuous growth in global energy demand, depletion of fossil resources and climate change concerns associated with fossil fuel combustion have increased the motivation on utilization of renewable energy sources. Utilization of renewable sources is vital in Turkey as the country highly depends on imported energy. Biogas is a renewable energy resource produced from decomposing organic waste under anaerobic conditions. Production of biogas from organic wastes such as animal manure is advantageous to contribute renewable energy production and waste management strategies for health and environmental protection. In this study, the animal manure based biogas energy potential of the Mediterranean Region of Turkey is determined. The region is composed of eight provinces including Antalya,
In this study sustainable valorization of cattle manure, recycled polyester, and their blend (1:1 wt.%) were examined by the thermogravimetric analysis (TGA) method. Pyrolysis tests were performed at 10, 30, and 50 °C/min heating rate from room temperature to 1000 °C under a nitrogen environment with a flow of 100 cm3/min. Kinetics of decomposition were analyzed by using Flynn–Wall–Ozawa (FWO) method. Based on activation energies and conversion points, a single region was established for recycled polyester while three regions of pyrolysis were obtained for cattle manure and their blend. Comparison between experimental and theoretical profiles indicated synergistic interactions during co-pyrolysis in the high temperature region. The apparent activation energies calculated by FWO method for cattle manure, recycled polyester. and their blend were 194.62, 254.22 and 227.21 kJ/mol, respectively. Kinetics and thermodynamic parameters, including E, ΔH, ΔG, and ΔS, have shown that cattle manure and recycled polyester blend is a remarkable feedstock for bioenergy.
Sustainable development depends on the availability of energy resources and their impact on environment. Biogas is a carbon neutral renewable energy option and one of the leading solutions to the climate change combat. As Turkey is an energy importer country, using indigenous energy sources is vital to meet future energy demand. Agricultural activities and livestock potential have high contribution to economy in Turkey. Biogas production from organic wastes such as livestock manure in this context, gain more importance to contribute both renewable energy production and waste management strategies. Livestock farming has important economic value in Burdur. In this regard, the animal manure based biogas potential, energy value, electricity and organic fertilizer generation capacity of Burdur Province were determined in this study. The results revealed that Burdur has annually 1.45 million tons of available animal manure potential to be used for biogas production of 27.1 million m 3 /year. This potential corresponds to 135.4 GWh annual energy generation that could be converted to heat and electricity. Considerable amount of the biogas production capacity has accumulated in the Center and, Bucak, Yeşilova, Gölhisar and Karamanlı districts of Burdur. In addition, about 50776 tons/year of organic fertilizer can be produced as the residual of the biogas plants.
Continuous demand for global power generation has increased the attention on renewable energy sources. Biogas is one of the viable options for conversion of organic waste materials into green power and valuable products. In this study, the impact of biogas production from agricultural residues (wheat straw, barley straw, corn stover, cotton residue, olive residue, banana peel, sugarcane bagasse, tomato residue) and municipal solid waste (MSW) on reduction of greenhouse gas (GHG) emissions in Mediterranean Region of Turkey
Continuous growth in energy demand and plastic waste production are two global emerging issues that require development of clean technologies for energy recovery and solid waste disposal. Co-pyrolysis is an effective thermochemical route for upgrading waste materials to produce energy and value added products. In this study, co-pyrolysis of sheep manure (SM) and recycled polyethylene terephthalate (PET) was studied for the first time in a thermogravimetric analyzer (TGA) in the temperature range of 25–1000 °C with heating rates of 10–30–50 °C min−1 under a nitrogen atmosphere. The synergetic effects of co-pyrolysis of two different waste feedstock were investigated. The kinetic parameters are determined using the Flynn–Wall–Ozawa (FWO) model. The results revealed that the mean values of apparent activation energy for the decomposition of sheep manure into a recycled polyethylene terephthalate blend are determined to be 86.27, 241.53, and 234.51 kJ/mol, respectively. The results of the kinetic study on co-pyrolysis of sheep manure with plastics suggested that co-pyrolysis is a viable technique to produce green energy.
Biogas is one the promising sustainable energy options due to high availability of organic wastes. Turkey is an energy importer country and diversification of the energy production with indigenous resources is vital for energy security. In Turkey, agricultural activities and livestock farming have important economic value. Biogas production from anaerobic digestion of organic wastes such as livestock manure is of great importance for renewable energy production and waste management for health and environmental protection. In this study, the animal manure based biogas potential, energy value, greenhouse gas emission reduction potential and organic fertilizer generation capacity of the Aegean Region of Turkey were determined. The region is composed of eight provinces including Afyonkarahisar,
<p>Bucket-type conceptual hydrological models are widely popular, because of their relatively low data and computational demands. With the improved computational techniques and advances in computer sciences, web based hydrological modelling tools are becoming available too. Conceptual rainfall-runoff (CRR) models are designed to approximate the general physical mechanisms which govern the hydrologic cycle and found practical by many hydrologists and engineers. In this context, a web based, open-source, platform independent, easily accessible hydrological modelling tool <strong>Hidro-Odtu</strong> has been designed. Aiming at providing fast and accurate results, <strong>Hidro-Odtu</strong> utilize lumped and semi-distributed hydrological modelling capabilities. The design of the <strong>Hidro-Odtu</strong> contains pre-processing using the tools to automatically delineate the river network and basin boundaries, input the forcing data, lumped hydrological modelling with parameter calibration capability, hydrological overland flow routing and dynamic result visualization. Moreover, web-based technologies allow remotely prepare model input files, run model calculation and display model results for rainfall-runoff calculations. Bucket storage lumped, conceptual rainfall-runoff model is selected as core feature for hydrological model and it is enhanced to a semi-distributed model by including the Muskingum-Cunge flow routing method to simulate overland flow. Model results are evaluated by several performance indices such that Nash&#8211;Sutcliffe Efficiency Index (NSE), Sum of Square of Error (SSE) or Kling-Gupta Efficiency (KGE).</p><p>Hydrological modelling, calibration and routing algorithms have been implemented by using Python programming language for the back-end calculations and Node.js framework, html, JavaScript have been utilized for front-end side to handle data preparation and results visualization.</p><p>Hidro-Odtu have been evaluated with numerous data sets with different study areas and found successful to delineate sub basins and river network, to define rainfall-runoff relationship on the basis of the sub-basins. With this tool, it is aimed to obtain practical hydrological modelling results using web technologies.</p>
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