KINETICS, ISOTHERM AND THERMODYNAMICS OF ABSORPTION OF Cr (VI) IONS INTO PPE-2 ANIONITE BASED ON POLYVINYL CHLORIDE
In the last decade, sorption materials such as biosorbents, clay minerals, and organic tars have been widely used in the
purification of Cr (VI) ions from wastewater. However, traditional sorbents often have low adsorption capacity, low mechanical
and chemical stability, and lack of reusability. Taking into account the above-mentioned problems, in our ongoing scientific
work, studies were conducted on the use of PPE-2 anionic-carrying material obtained on the basis of polyvinyl chloride and urea
in the purification of highly toxic Cr (VI) ions from wastewater. For this, the laws of sorption of Cr (VI) ions from artificial
solutions to PPE-2 anionite under static conditions were studied. The influence of various external factors, concentration of Cr
(VI) ions in the solution, temperature of the sorption environment, duration of sorption and pH of the solution on the process of
sorption of Cr (VI) ions to the anion exchange material based on polyvinyl chloride was studied.
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