Behaviour tensides of water solutions in a contact with clays

Abstract

Tensides often appear in textile industries waste waters, where can imperil life in water streams. They can be removed from water by biodegradation on a very big soil surface and through a long time. The investigations of the behaviour of tensides water solutions in a contact with clays are interesting because of oportunity of their removal from waste waters and because of investigations regarding their influence on soil, where they can remain for a longer or shorter time. In this work the behaviour of water solutions of different tensides, which are used in textile industry, in a contact with natural aluminosilicates through an adsorption process has been investigated. Anion-active, non-ionic and cation-active tensides have been studied, and as adsorbents were used natural kaoline and a mixture of aluminosilicates containing about 35 % of amorphous silica. By means of a dynamic method of columns with the unstationar immobile layer the influence of adsorbent quantity and concentration of tensides on the adsorption process has been investigated. The electrical conductivity, surface tension and pH value of solution samples, passed through the column and caught in ratios of 50 cm3 have been measured.