Sürdürülebilir Kalkınma Amaçları
Yayınlar
- Kitap BölümüYalnız künye2026Green-Synthesized Nanocomposites for Sustainable Fuel Desulfurization: Advances and Challenges
Ozkan, Abdullah; Ozkan, Vildan; Bozbeyoglu, Pinar; Altuner, Elif Esra
The mounting global demand for energy signifies that we must depend on fossil fuels, which engenders environmental degradation and precipitates the emission of substantial quantities of sulfur oxides (SOx). Protecting themselves from environmental pollution is a top priority for many countries. Proper removal of sulfur- containing compounds from fossil fuels is becoming a major focus. Fuels such as diesel, fuel oil, and gasoline are particularly important in this regard. Fuels such as diesel, fuel oil, and gasoline are particularly important in this regard. The numerous negative consequences of traditional hydrodesulfurization (HDS) methods are what researchers focus on, and these methods are limited. Some examples of these negative effects include higher costs, the use of too much pressure and temperature, and using too much hydrogen. Scientific studies show that biosourced nanocomposite materials are good for desulfurization methods because they can reduce the potential negative consequences. Using raw materials such as microorganisms, biopolymers, and plant extracts is one of the most important ways to increase energy efficiency and eliminate chemical emissions. The large surface areas, enhanced active site homogeneity, and diverse functional groups of nanocomposite materials obtained from such biosourced raw materials make them promising candidates for use in adsorptive and oxidative desulfurization processes. Metal- metal oxide (Fe, Ni, Cu, TiO2) and carbon- based (graphene, carbon nanotube, and biochar- supported) nanocomposites are particularly preferred for achieving high sulfur removal with low energy consumption. The provision of information on the production methods, chemical properties, sulfur removal methods, and recent scientific research on biosourced nanocomposites is the purpose of this section. In addition, the environmental benefits, economic benefits, and potential roles of biosourced materials in alternative energy systems are discussed.
- MakaleAçık Erişim2025Production of Pure PVC, Graphene and Carbon Nanotube-Doped PVC Electrospun Nanofiber Membranes: A Highly Effective Method for Removing Acid Blue 74 Dye from Wastewater
Bozbeyoglu, Pinar; Ozkan, Vildan
Dyeing wastewater is produced by various industries, including textiles, cosmetics, tanning, and plastics. Annually, about 1.6 million tons of dyes are manufactured, with 10-15% released into the environment as wastewater. Organic dyes are particularly harmful pollutants, even at low concentrations. The adsorption technique has proven effective for removing these pollutants from water, significantly relying on the properties and efficiency of the adsorbent. Nanofibers are emerging as promising adsorbents for dye removal due to their unique properties and high efficiency. This research focuses on polymeric nanofibers to address global dye pollution, as they effectively eliminate various dyes and contaminants. However, their mechanical properties can be a limitation under harsh conditions. To enhance their strength and hydrophilicity, incorporating nanofillers like carbon nanotubes and graphene oxide has shown significant benefits. This study examines the impact of different nanofibers on the adsorption of Acid Blue 74 (AB74) dye. Pure, carbon nanotube-doped, and graphene-doped PVC nanofibers were produced via electrospinning. Their properties were analyzed using FTIR and SEM, while key parameters such as contact time, adsorbent dosage, dye concentration, and pH were assessed to understand the adsorption behavior. Additionally, dye adsorption isotherms and kinetics were investigated.