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.
"There is another technology developed recently for the purpose of simultaneous removal of SO 2 and NO. Nasonova et al.  exhibited a plasma chemical vapor deposition (PCVD) method using a non-thermal plasma reactor. In the reactor, glass beads coated with thin film TiO 2 by PCVD process were used as dielectric materials. "
[Show abstract][Hide abstract] ABSTRACT: Simultaneous removal of SO2 and NO from flue gas can be a potential and breakthrough solution to reduce the capital and operating cost of air pollutants control technology, making it more economically feasible. In this study, copper based RHA sorbent was used to adsorb SO2 and NO simultaneously. Effect of operating temperature, concentrations of SO2 and NO towards sorbent sorption activity was studied. The findings from this study revealed that there is no clear trend on the effect of temperature but optimum operating temperature of 100 °C was determined to favour both desulfurization and denitrification process. In addition, optimum SO2 and NO concentration were determined as 2000 ppm and 500 ppm, respectively. Although the optimum operating conditions were determined based on the total mols of pollutants removed by the sorbent but the on-going removal activity by the sorbent during equilibrium stage was not neglected. Optimum adsorption capacity for the derived sorbent was 53.40 mg SO2/g sorbent and 6.90 mg NO/g sorbent. Characterizations were performed on spent sorbent to identify the various products of desulfurization and denitrification activity. This study revealed that the synthesized sorbent does not solely act as a sorbent but also as a catalyst.
Journal of Environmental Chemical Engineering 12/2013; 1(4):755–761. DOI:10.1016/j.jece.2013.07.017
[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 principle
IFSA World Congress and 20th NAFIPS International Conference, 2001. Joint 9th; 08/2001
[Show abstract][Hide abstract] ABSTRACT: A non-thermal plasma rector with a catalytic electrode made of sintered metal fibres (SMFs) was tested for the oxidative decomposition of a model VOC toluene. The input energy was varied in the range 160-295 J/I by varying the applied voltage between 12.5 and 22.5 kV at 200 Hz. Influence of various parameters like toluene concentration, SMF modification by Mn and Co oxides, input energy and ozone formation was studied. It has been observed that plasma catalytic approach is very effective for total oxidation of toluene at low input energy, especially at toluene concentration <= 250 ppm and SMF modification by transition metal oxides increased the performance of the reactor significantly. MnOx modification appears to be a better choice compared to CoOx, which may be attributed to the in situ decomposition of ozone leading to the formation of more reactive oxidants like atomic oxygen. (c) 2010 Elsevier B.V. All rights reserved.
Chemical Engineering Journal 06/2010; 160(2). DOI:10.1016/j.cej.2010.04.011 · 4.32 Impact Factor
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