Person: SALİHOĞLU, GÜRAY
Loading...
Email Address
Birth Date
Research Projects
Organizational Units
Job Title
Last Name
SALİHOĞLU
First Name
GÜRAY
Name
5 results
Search Results
Now showing 1 - 5 of 5
Publication Incorporation of solar-heated aeration and greenhouse in grass composting(Springer, 2021-01-26) Poblete, Rodrigo; Salihoğlu, Güray; Salihoğlu, Nezih Kamil; SALİHOĞLU, GÜRAY; SALİHOĞLU, NEZİH KAMİL; Bursa Uludağ Üniversitesi/Mühendislik Fakültesi/Çevre Mühendisliği Bölümü; 0000-0003-0714-048X; AAG-9399-2021; AAG-9413-2021Composting is an environment-friendly method for recycling organic waste, and incorporation of heat and aeration can enhance favorable conditions for microbial growth in the process. This research aimed to evaluate the influence of the introduction of solar heat and aeration to the waste grass exposed to the composting process. The compost piles studied were subjected to different processes: application of solar-heated aeration, only-aeration, solar heating with a greenhouse, and control. Solar-heated air was introduced to a compost pile of grass clippings and compared with a greenhouse compost system. The composting process of 70 days was monitored for temperature, oxygen, moisture, organic matter loss, and humification rate. Germination index has been used to evaluate the maturation of the composts produced. The highest temperature was obtained at the compost pile with the greenhouse. This system reached the highest temperature (68.2 degrees C) on day 15; the ambient temperature on that day was 20.6 degrees C. The decreases in the C/N ratios after day 70 of composting were 20% and 15% for the greenhouse and the system where solar-heated air was introduced, respectively. Although the temperature of the solar-heated air was higher than that of the greenhouse, thermophilic temperature levels could not be reached in the aerated compost pile, which indicated a cooling effect of excessive aeration even with the heated air. Composting of grass clippings resulted in a decrease in organic matter content and enhancement in seed germination and root growth, obtaining high GI levels, inferring no phytotoxicity. This study showed that composting of grass clippings with low C/N ratios and high humidity can still be possible by using solar energy.Publication Life cycle assessment for municipal waste management: Analysis for Bursa(Pamukkale Üniversitesi, 2019-01-01) Salihoğlu, Güray; Poroy, Zehra; Salihoğlu, Nezih Kamil; SALİHOĞLU, GÜRAY; Poroy, Zehra; SALİHOĞLU, NEZİH KAMİL; Bursa Uludağ Üniversitesi/Mühendislik Fakültesi/Çevre Mühendisliği Bölümü.; 0000-0003-0714-048X; AAG-9413-2021; AAG-9399-2021; DLX-7345-2022Solid waste management model of the city of Bursa that responds to the waste management needs of the city creates a burden on the environment, like every other activity. The purpose of this study was to analyze the environmental burden arising from municipal solid waste management in Bursa and to determine the necessary steps to be taken to reduce this. Environmental burden was analyzed by using life cycle assessment (LCA) approach and landfill gas impact modeling. Municipal waste management steps, namely collection and transport, transport to transfer station, landfilling, energy conversion from landfill gas, were included into the system boundaries in LCA. SimaPro 8.5.0 software was used for the LCA study, and EPA LandGem model was employed for the assessment of the impact by landfill gas. The findings of the study showed that the emissions reduced by the landfill gas to energy plant in one year is approximately 0.5 million ton CO2 equivalent, and the contribution of municipal waste, which is mainly managed by landfilling, to the global warming in one year is approximately 44 million ton CO2 equivalent. The approximate contribution of municipal waste management to smog formation was calculated as 55 million ton O-3 equivalent, the contribution to depletion of ozone layer was 647 kg CFC-11 equivalent, and to carcinogenic substance formation was 22.5 CTUh. Its inhalation impact was found as 1732 ton PM10 equivalent.Publication Photocatalytic degradation of chlothianidin: Effect of humic acids, nitrates, and oxygen(Pleiades Publishing Inc, 2019-12-01) Kralj, M. B.; Mazur, D. M.; Lebedev, A. T.; Trebse, P.; Dilcan, E. G.; Salihoğlu, G.; SALİHOĞLU, GÜRAY; Bursa Uludağ Üniversitesi/Mühendislik Fakültesi/Çevre Mühendisliği Bölümü.; AAG-9399-2021The use of neonicotinoid insecticides has been constantly revised because of their impact on bees, causing their decrease and bee malady. Unfortunately, because of the worldwide differences in pesticide regulation, chlothianidin is still allowed in European Union for greenhouse use and worldwide in some cases without any restictions. Lately, it was detected on soil particles and in raw and drinking waters. The preparation of drinking waters implies different purification processes, including chlorination, ozonation, and UV irradiation and nowadays advanced oxidation processes, including TiO2. The TiO2 photocatalytic degradation of chlothianidin in the presence of oxygen, nitrate, and humic acids was followed by kinetic studies, whereas the photoproducts formed were identified by liquid chromatography/tandem mass spectrometry. The efficiency of different set-ups of the photocatalytic degradation of chlothianidin was evaluated by the identification of photoproducts and bioluminescence inhibition of bacteria Vibrio fischeri. The results indicate that less harmful photoproducts are generated in the samples with added humic acids.Publication Optimization of the solar brine evaporation process: Introduction of a solar air heater(Wiley, 2019-05-01) Poblete, Rodrigo; Salihoğlu, Nezih Kamil; Salihoğlu, Güray; SALİHOĞLU, NEZİH KAMİL; SALİHOĞLU, GÜRAY; Bursa Uludağ Üniversitesi/Mühendislik Fakültesi/Çevre Mühendisliği Bölümü.; 0000-0002-7730-776X; 0000-0003-0714-048X; AAG-9399-2021; AAG-9413-2021The purpose of this study was to investigate the evaporation process of reject brine by using a solar system. The solar system contained a solar still coupled with a solar air heater (SAH). Solar still had a heated base, which was connected to the solar collector with a copper pipe. The influence of the introduction of the SAH to the system and increased levels of air mass flowrates was investigated. Variations in temperature and solar irradiation were monitored as well as brine evaporation. Introducing the SAH and increasing the air mass flowrate resulted in faster brine evaporation, higher utilization rate of solar radiation, higher brine, and base temperature levels within the solar still compared to the system without the SAH. The mean base temperature of the system with the SAH was 43.46 +/- 11.3 degrees C, while that of the system without the SAH was 30.62 +/- 7.35 degrees C. The use of the SAH and high air mass flowrates influenced the temperature distribution within the solar still, which affected the evaporation of the brine in a positive way. Introduction of the SAH and high air mass flowrate increased the drying efficiency of the solar system at a level of 120%. (c) 2018 American Institute of Chemical Engineers Environ Prog, 38:e13062, 2019Publication Recycling of sewage sludge incineration ashes as construction material(Gazi Üniversitesi Mühendislik Mimarlık Fakültesi, 2020-01-01) Yiğit, Berna; Salihoğlu, Güray; Mardani-Aghabaglou, Ali; Salihoğlu, Nezih Kamil; Özen, Süleyman; Yiğit, Berna; SALİHOĞLU, GÜRAY; MARDANİ, ALİ; SALİHOĞLU, NEZİH KAMİL; Bursa Uludağ Üniversitesi/Mühendislik Fakültesi/Çevre Mühendisliği Bölümü; Bursa Uludağ Üniversitesi/Mühendislik Fakültesi/İnşaat Mühendisliği Bölümü; 0000-0003-0714-048X; 0000-0003-0326-5015; AAG-9399-2021; AAG-9413-2021; AAJ-6415-2021; C-7860-2015; EHO-7411-2022Sewage sludges that are originating from the municipal wastewater treatment plants of Bursa city have been incinerated with a fluidized bed reactor of 400 tons/day capacity since 2017. Each month, on an average, 615 tons of ash is generated as a waste of the incineration process, which needs disposal. The purpose of this study was to investigate if the sludge incinerator ash can be recycled as a construction material. Stabilization/solidification (S/S) and geopolymerization technologies were applied to the sludge ash with this aim. Portland cement, fly ash from a coal-fired power plant, and marble sludge were used as binders. S/S samples were activated with water, while geopolymer samples were activated with 8MNaOH and NaSilNaOH solutions. The prepared paste samples were air-cured for 28 days and analyzed for compressive strength and heavy metals leaching. S/S samples containing sludge ash yielded a compressive strength level of 21.8 MPa, while geopolymer samples resulted in a compressive strength level of 50.0 MPa. Higher compressive strength levels of several samples containing waste sludge ash than that of the control samples without waste were noticed. Leaching tests showed that heavy metals leaching from the samples prepared with sludge ash were much lower than the legal limit values for toxicity. Both leaching tests and compressive strength tests showed that sludge ash has the potential to be considered as a construction material.