2 results
Search Results
Now showing 1 - 2 of 2
Article Citation - Scopus: 2Effect of Geothermal Water Composition and Pretreatment on the Product Water for Boron-Sensitive Crops(Turkish Energy Nuclear and Mining Research Institute, 2021) Güler, EnverThe membrane filtration is an effective way to produce water for human consumption, industrial use, or irrigation purpose. In this study, a brackish water reverse osmosis (BWRO) membrane was practically investigated to obtain irrigation water from geothermal water. The quality of the produced water was analyzed to understand the potential in agricultural use for boron-sensitive crops. The effects of the feed solution composition and pretreatment by microfiltration were studied. Results showed that the ionic content was effective in reduction of permeate flux. However, the rejections of salt and silica did not change significantly by the change in the feed water composition and they were successfully removed from the geothermal water by more than 95% rejection. Pretreatment of the geothermal water with a microfiltration (MF) membrane having a pore-size of 0.8 μm provided higher flux than the one having a pore size of 5 μm. The higher rejections of boron were only achieved with increased pH in the pretreatment. The pH of 9.5 in the geothermal water provided a rejection of boron as 75% with a permeate boron concentration of 2.4 mg/L when 15 bar of operating pressure was employed. This level of boron concentration in the irrigation water was found to be allowable only for some boron resistant crops (e.g. beans, lettuce, onion) and semi-sensitive crops (e.g. sunflower, potato, tomato).Article Citation - WoS: 1Citation - Scopus: 1Effect of Asymmetric Feed Flow Rate and Temperature on Reverse Electrodialysis: A Response Surface Methodology Approach(Elsevier, 2025) Gul, Taha Furkan; Gonlugur, Miray Emreol; Guler, Enver; Cihanoglu, Aydin; Kabay, NalanReverse electrodialysis (RED) has the potential to generate sustainable energy by utilizing the salinity gradient potential between natural water sources with different salinities, such as river water and seawater. It is essential to comprehend the RED process's characteristics and optimize operational parameters to enhance its commercial viability. This study investigated the effects of varying inlet feed flow rates and temperatures on RED performance using Response Surface Methodology. Unlike conventional approaches, where inlet flow rates of seawater and river water solutions are typically kept equal, this research explores their diverse combinations. Key performance metrics of RED, including power density and open circuit voltage, were evaluated. Moreover, the impacts of different feed flow rates and temperatures on ohmic and non-ohmic resistances were thoroughly examined. The findings underscore significant interactions between feed flow rates, temperature, and RED performance outputs, providing insights essential for optimizing RED operations and enhancing its practical application in sustainable energy solutions.
