Study of the kinetics of the extraction of zinc ions from wastewater by ferritization

Abstract

Given the relevance of the problem of wastewater treatment from heavy metal ions, and in particular from zinc ions, it is necessary to study the regularities of the process. One of the key aspects is the kinetics of the process and the dependence of the ion extraction efficiency on the duration of the purification process. Reducing the time of the process makes it possible to reduce the cost of electrical energy for technological processes, in particular for the activation of the reaction mixture by heating or electromagnetic pulses.
 Based on the obtained results of the experiment, a mathematical model of the kinetics of the process of extracting zinc ions from wastewater by ferritization with thermal and electromagnetic pulse activation was built. A regression model was used for data processing and an algorithm for calculating the dependence of the degree of purification on the time of the process was proposed. Determined the degree of purification of wastewater from heavy metal ions at different values ​​of the process duration. The expediency of carrying out the process of ferritization cleaning with a duration of 10-15 minutes has been substantiated.

Devising a comprehensive technology for treating industrial iron sulfate-containing effluents of galvanic production

“…The process of energy-saving ferrite treatment of galvanic effluents consists in the formation of inert sediments of various phase composition in the presence of iron ions and their separation by magnetic separation [18]. The advantages of this method are high efficiency, the possibility of its application for the removal of heavy metal ions from widespread galvanic processes of galvanizing [19] and nickel plating [20], cheapness due to the repeated use of commercial products. Such processes using iron salts [18] are of industrial importance.…”