Optimization Of Combined Cellulose-Inorganic Sorbents Obtaining Technology for Radioactive Cesium Concentration

Віта Василівна Галиш, Аркадій Маркусович Шахновський, Микола Тимофійович Картель, Віталій Віталійович Мілютин

Abstract


In this article the optimization of the synthesis conditions of combined sorption materials based on cellulose fiber and copper ferrocyanide selective toward radioactive cesium. The influence of the parameters of modification process on the modifier in the bulk of organic carrier content and sorption characteristics of products was investigated. According to the results of mathematical processing of the experimental data the adequate statistical model of the modification of bleached cotton fiber with the solutions of copper ferrocyanide at different values of pH and temperature of the process were obtained. The optimal values of the technological parameters were determined using Harrington's desirability function. It was shown that the optimum parameters of the modification process allowing to obtain an effective sorbents with the content of copper ferrocyanide 4.37 % in the volume of the carrier, which are characterized by a recovery rate of cesium from aqueous solutions of 95.14 % and the distribution coefficient of 7501 ml/g, are pH 5.4 and temperature 90 °C. However, the optimal specific sorption properties (specific recovery rate of cesium 35.76 %/g and a distribution coefficient 2236 (ml/g)/g) is achieved when the modifier content is 2.71 % in a sorbent which is prepared at pH 7.8 and 90 °C.

Keywords


Cellulose; Bleached cotton fiber; Copper ferrocyanide; Modification; Radiocaesium; Full factorial experiment; Optimization

References


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DOI: https://doi.org/10.20535/1810-0546.2015.1.42835

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