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

Irina Martemianova,Dmitrii Martemianov,Luiza Nadeina,Evgenii Plotnikov

doi:10.1051/matecconf/20168501030

Abstract

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.

Highlights

One of the current problems is to provide people with clean drinking water
Natural mineral sorbents are often used in water purification due to their low cost and higher sorption capacity
Microbiological pollution is known to appear on the surface of sorbent in the water purification module

Summary

Introduction

One of the current problems is to provide people with clean drinking water. Natural mineral sorbents are often used in water purification due to their low cost and higher sorption capacity. Zeolite is one of well-known natural minerals possessing good sorption properties. It is necessary to provide sorption materials (zeolites) with bacteriostatic properties in order to prevent the growth of microbiological pollution on their surface. In order not to reproduce microbes in the filtered water, sorption material needs to be provided with bactericidal properties. Copper is known to possess a number of useful properties It prevents bacteria, harmful fungi and other organisms to produce on the different surfaces. The thing is, the copper content in water should not exceed maximum permissible concentration (MPC) The aim of this investigation is to immobilize copper salts on the surface and inside natural zeolite pores of Kholinsk deposit (the Republic of Buryatia, Russia) in order to provide them with bactericidal and bacteriostatic properties. Sorption properties of investigated materials should be identified in removing Zn2+ and Pb2+ ions from the simulated solutions

Materials and methods

Results

Conclusion