Modification of natural sorbent for providing it with bactericidal and bacteriostatic properties

Currently, the problem of water purification from chemical and microbiological contaminations is very important. Sorption technologies are one of the effective and easy-to-use water purification techniques. To prevent the growth of microbiological contaminations on the surface of investigated sorbents, the surface of the investigated sorbents was treated by aqueous solution of copper sulphate with the further study of bactericidal and bacteriostatic activity. The results of sorption efficiency of original and modified zeolite samples of Kholinsk deposit are presented in this paper. These results were obtained, when Zn{2+} and Pb{2+} ions were removed from the simulated solutions. It was concluded that it is possible to provide natural zeolites with bactericidal and bacteriostatic properties

Water Purification with Natural Sorbents: Effect of Surface Modification with Nano-structured Particles

Modified nanostructured sorbents are widely used in water treatment processes. In this work, aluminum and iron particles prepared by electro-spark dispersion have been applied as modifiers. Zeolite samples from "Holinskoe" mineral deposit (Russia, Republic of Buryatia), with a size smaller than 0.1 mm, have been modified with aluminum and iron particles, using a sol-gel process. The properties of the modified materials have been determined by means of sorption test, when removing ions Pb{2+}, Fe{3+} and Cd{2+} from the model solutions in static conditions. Using the method of thermal desorption of nitrogen (BET) it has been shown that increasing the iron content in the samples of nanostructured modified sorbents does not affect the increase in specific surface area and pore volume of the samples. Ions concentrations have been analyzed by stripping voltammetry and photocolorimetry. As a result, modified sorbents revealed a high efficiency sorption of heavy metals

Modification of natural sorbent for providing it with bactericidal and bacteriostatic properties

Currently, the problem of water purification from chemical and microbiological contaminations is very important. Sorption technologies are one of the effective and easy-to-use water purification techniques. To prevent the growth of microbiological contaminations on the surface of investigated sorbents, the surface of the investigated sorbents was treated by aqueous solution of copper sulphate with the further study of bactericidal and bacteriostatic activity. The results of sorption efficiency of original and modified zeolite samples of Kholinsk deposit are presented in this paper. These results were obtained, when Zn2+ and Pb2+ ions were removed from the simulated solutions. It was concluded that it is possible to provide natural zeolites with bactericidal and bacteriostatic properties

Application of Combined Sorbent For Process of Water Purification From Microbial Contamination

The results of sorption efficiency of filter material which was obtained on the base of river sand and modified by aluminium oxyhydroxide with the sol-gel process are presented. All components were tested as sorbents, and their properties were compared. New filter material was found effective in the process of water treatment from bacterial contamination

Application of Combined Sorbent For Process of Water Purification From Microbial Contamination

The results of sorption efficiency of filter material which was obtained on the base of river sand and modified by aluminium oxyhydroxide with the sol-gel process are presented. All components were tested as sorbents, and their properties were compared. New filter material was found effective in the process of water treatment from bacterial contamination