NO and SO2 removal in non-thermal plasma reactor packed with glass beads-TiO2 thin film coated by PCVD process
ABSTRACT We analyzed the NO and SO2 removal in the non-thermal plasma discharge process combined with TiO2 photocatalyst. The non-thermal plasmas were generated by dielectric barrier discharge with glass beads as dielectric materials. The TiO2 thin films were coated on the glass beads uniformly without crack by a rotating cylindrical plasma chemical vapor deposition reactor. The NO and SO2 removal efficiencies obtained in non-thermal plasma–TiO2 photocatalysts hybrid system were higher than those in plasma process only, because of the additional removal of NO and SO2 by photocatalysts. The NO and SO2 removal efficiencies become higher, as applied peak voltage, pulse frequency and gas residence time increase, or as the initial NO and SO2 concentrations decrease. The hybrid system of non-thermal plasma and photocatalyst thin film on glass beads prepared by PCVD process is quite efficient method to remove NO and SO2.
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ABSTRACT: Cerous trinitrate hexahydrate was used as a surface modifier to treat hollow glass beads via a process of chemical deposition, and its effects on the strength, rheological, optical, and thermal properties of isotactic polypropylene/hollow glass beads(iPP/HGB) composites were assessed. The strength test results showed that the tensile strength and impact strength of iPP/HGB composites were obviously improved when HGB were modified, the optimum weight concentration of this modifier was 1.2 wt%. Moreover, dynamic rheological measurements showed that the complex viscosity and storage and loss moduli of the iPP/HGB composites were also increased when the HGB were treated. Additionally, the influences of this modifier on the structure and thermal properties, including the crystallizing and melting behaviors, of the composites were studied by means of X-ray diffraction, polarized optical microscopy, and differential scanning calorimetry. The results showed that the modifier had a nucleating effect on the matrix and promoted the formation of β-crystals of isotactic polypropylene.Journal of Macromolecular Science, Part B. 01/2012; 51(4):807-816.
Conference Paper: A fundamental decomposition of type-2 fuzzy sets[Show abstract] [Hide abstract]
ABSTRACT: Type-2 fuzzy sets let us model and minimize the effects of uncertainties in rule-base fuzzy logic systems; however, they are difficult to understand for a variety of reasons which we enunciate. We strive to overcome the difficulties by: (1) establishing a small set of terms that let us easily communicate about type-2 fuzzy sets and also let us define such sets very precisely, and (2) presenting a new representation for type-2 fuzzy sets. This new representation can be used to derive formulas for union, intersection and complement of type-2 fuzzy sets without having to use the extension principleIFSA World Congress and 20th NAFIPS International Conference, 2001. Joint 9th; 08/2001
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ABSTRACT: The combination of plasma discharge and TiO2 photocatalysis exhibits high performances in the removal of nitrogen monoxide (NO). This article is aimed at elucidating the relationships between NO decomposition efficiency and various experimental parameters, including voltages, humidity and temperature. The experimental results indicate that the efficiency of NO removal by synergic plasma-catalyst coupling is significantly higher than plasma only or photocatalyst only systems. Moreover, the NO removal efficiency improves with the increase of applied voltage. Meanwhile, a higher humidity results in a reduced number of electron-hole pairs at the surface of TiO2 photocatalyst, leading to lower synergic purification efficiencies. Finally, the efficiency of NO removal is raised with the increase of temperature due to the fact that the adsorption of NO and water by nano-TiO2 is affected by environmental temperature.Environmental Science and Pollution Research 07/2013; · 2.76 Impact Factor