Modified Bleaching Clay as a Sorption Material

Abstract

In the process of refining vegetable oils, bleaching clays are often used, which leads to the formation of organic mineral solid waste. In the work, the possibility of neutralizing waste bleaching clay by the thermal method and its subsequent use for sewage treatment from dyes was investigated. As a result of the waste heat treatment, a finely dispersed powder was obtained, on the surface of which there were products of various degrees of carbonization of organic substances. To substantiate the theoretical possibility of using the studied material as an adsorbent, the structure of its structure was studied. The obtained micrographs showed that the particles of the modified material are a loose bulk surface with protrusions, cracks, channels, which indicates a strong defect in their surface and high surface energy of the system as a whole, which is a positive factor for the occurrence of adsorption processes. Studies on model solutions of the dye “methylene blue” allowed us to establish that the optimum temperature for roasting is 350 °C and to achieve a cleaning efficiency of 96%.