The results of industrial tests of a cascade of chemical absorbents for catching spent halogen-containing processes gases during discharge into the atmosphere are discussed. It is noted that the volume of the discharged gases decreases as a result of CO 2 absorption. The HF and Cl 2 content in passing gas can serve as a criterion for the completion of each catching step; Cl 2 detection after the last step is a service life criterion for all chemical absorbents of a facility without exception. The average catching efficiency is 99.7 and 98.5% with respect to fluorine-and chlorine-containing components, respectively. An approximate calculation of the near-ground concentration of HF and Cl 2 is performed. The gases discharged by the isotope separation plant at the Siberian Chemical Combine were purified at the level of the maximum admissible concentration for the working zone and not at the level of the technical norm established individually for each industrial enterprise. Equipping nuclear fuel cycle enterprises with such systems will make it possible to decrease environmental contamination considerably.Modernized mercerized wood must be tested under the operating conditions of a gas-dust catching facility as the final sanitary step in neutralizing gas mixtures because the halogen-containing substances whose chemical activity is low when interacting with marble dust are not adequately removed. The normalized process discharge from the isotope separation plant Siberian Chemical Combine is 3 mg HF/m 3 . The principal absorbing reagent NaOH in wood absorbents is a chemically more active substance with respect to acid gases than Ca(OH) 2 , which forms the base of the calcium absorbent (CCA) and especially crystalline CaCO 3 which is the base of marble dust. In addition, calcium absorbent does not contain a reducing additive, while in modernized mercerized wood the additive is Na 2 SO 3 , which makes it possible to reduce the comparatively inert compound Cl 2 to HCl and the Cl 2 interacts more actively with sodium hydroxide [1,2]. A factor of no small importance is the proximity of the supplier of chemical absorbents -the expert plant National Technical Center Zapsibpromtekhnologiya (Tomsk) whose capacity reaches to 20 tons/yr [3].Thermodynamic calculations confirmed that alkali-metal hydroxides, as compared with active compounds of other absorbents, are chemically more active with respect to acid substances (Table 1). The change of the Gibbs energy was calculated with respect to reactions of the active component of an absorbent with HF.
The infectious complications of injuries and wounds are the actual problem of surgery. One of the most important tasks for today is the investigation of new remedies to prevent from the infectious process and to accelerate purifying processes from necrotic tissues in the wound and to intensify the wound regeneration. In this connection, to guarantee sorbing, antimicrobic, necrolitic and anesthetic protective actions is necessary to develop the first stage wound process bandage. As a result of the doctors’ and scientists’ team-work investigation a new dressing model for treating exuding wounds has been made. In the experiment this adsorbing bandage with the sorption level based on graphite particles (thermo broadened form of fluorinated graphite intercalated compound) has shown the high wound healing and drainage activity in treating associated gunshot bone-arterial injuries of extremities.
The marketing research has been made to find out the outlooks for commercial activities and market entry for the graphitebased adsorbent dressing. The bandage market increase is caused by the wide application, growing requirement and low price. Domestic cheap ineffective bulky dressings prevail on the market but last years the tendency to the gain in sales of innovative, expensive and effective in treatment import bandages is being observed. The new graphite-based adsorbent dressing has good market prospects in connection with the segment increase, low business competition and high demand of modern effective bandages with adsorbent, wound healing and atraumatic properties.
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