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1 | It is established that under pressureless filtering throughthe fiberous polypropilen the purification process is the more effective the less is the initial concentration of pollution this material is prevailing other materials in its mechenical, chemical resistance and sorbtional capasity. The maximal degree of purification is acheived 85.7% for Cu, 88.5% for Fe, 68% for suspension, 86.3% for oil products, 46.3% for Zn, 71.4% for phosphates. | 969 | ||||
2 | Technology of water de-ironing is presented, based on filtering water trough fiberous sorbents made by the formation fiberes of melted polypropilen, type 21030-6, spilled from rotating disc. In is established that degree of water de-ironing and the working ability of the filter greatly depend on filter staffing density and on thickness of iron hidroxide layer over the fiber. The ultimate concentration of iron in water after the filtering is less than 0,3 mg/1 under initial concentration about 10 mg/1, if the staffing density is 140 through 200 kg/ m cub. and height of filtering layer is 200 mm. | 916 | ||||
3 | Main characteristics and sorbtional properties of polymeric fiberous materials made of thermoplastic wastages have been studied. It is established that the highest abilities of filtering oil-products is reached with proportions between a product and filter masses of: 6.0 through 9.31 for raw oil, 6.0 through 13.0 for oil type И-20, and 3.5 through 9.95 for diesel oil. They are dominating widely used filtering materials such as sul-focarbon and activated carbon. Regeneretion of fiber-ous sorbents is made by centrifugeing with separation factor equal to 100. Sorbtion capacity decreases no more than 20% after 50 regeneration cycles. | 928 | ||||
4 | The possibility of convenient preparative methods of synthesis of polycyclic aromatic hydrocarbons of foehn set by the way of arylating olefins with halogenarils in the presence of palladium salts and following photochemical dehydrocyclization of 1,2-dyarilethenes are explored. The conditions of receiving of 3, 4, 5-nuclear carbons with different position of substituents with good preparative outputs are found. The prospects of method for synthesis of hydrocarbons of foehn set is shown. | 980 |