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High concentration benzene production in paper and painting industries is a restrictive problem in production line of companies. In this study, removal of high concentrated benzene produced in painting companies was investigated using a Plate Gliding Arc (PGA) reactor. Decomposition of methane and carbon dioxide as the most predominate byproducts of benzene decomposition was also studied using (PGA) reactor. The effect of several parameters such as input power, feed gas flow rate, type of carrier gas, and [CH(4)/CO(2)] flow ratio was studied by two series of experiments. The results show significant conversion (>70%) of high concentration benzene (74000ppm) without using any catalyst. Selectivity of CO(2) and CO was 88% and 10% respectively showing complete oxidation of benzene. The maximum conversion of CH(4) and CO(2) reached 52% and 69%, respectively by using optimum ratio of 3:4. The main results of this study proved removal of high concentration benzene using a low-energy-density reactor. Furthermore, an optimum value for efficient conversion of methane and carbon dioxide was achieved and the energy density of the PGA reactor was evaluated, which shows a good promise for industrial applications.

In this paper, a layer of titanium nitride deposited on titanium substrate. Titanium nitride produced by the reaction of titanium and nitrogen plasma that generated by plasma torch, then molten particles of titanium nitride huddled on to the substrate. Sample produced by this method analyzed with Raman scattering spectroscopy and X-ray Diffraction witch confirm titanium nitride production. Vickers hardness was measured using the layer that was at best 1150 HV0.3. To study the surface of layer, light microscopy and electron microscopy (SEM) and AFM were used.

This study investigated the deposition of transparent SiO X N Y thin film on polyethylene terephthalate (PET) polymer using tetraethoxysilane (TEOS) at room temperature via the plasma enhanced chemical vapor deposition method. SiO X coatings have desirable properties such as optical transparency, abrasion resistance, low gases permeability and recyclability. Deposition of these layers on polymeric substrates makes them suitable for a great number of applications ranging from optics, interlayer dielectric to barrier films for the food-packaging and medical devices industries. In this work TEOS was prepared as organosilicon precursor and the mixture of oxygen and nitrogen gases were added under 24 W of radio frequency power. The nitrogen flow rate was varied between 0–150 sccm. To compare structural properties of the transparent thin films, atomic force microscopy was applied, and the chemical bonding states of films, have been investigated by using Fourier transform infrared spectroscopy. The plasma diagnostics have been done by optical emission spectrometry. The transparency of synthesized films when examined by UV-visible spectroscopy, was 85% to 90%.