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Spatiotemporal Profiles of Ethylbenzene Concentrations in Clay Soil During Its Electrokinetic Remediation

  • CHEMICAL PHYSICS OF ECOLOGICAL PROCESSES
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Abstract

The process of electrokinetic remediation (EKR) of clay soil containing an admixture of a typical organic pollutant, ethylbenzene, which is often found in it near gas stations and oil product storage facilities, is studied. Experimental measurement of the dependence of the concentration of this pollutant on time and the spatial coordinate during electrokinetic soil decontamination is carried out on a specially designed installation using the chromato-mass spectrometric method and a procedure close to that described in the guidelines of the MUK 4.1.1061-01. In order to intensify the EKR process of organic pollutant, the method of using an aqueous solution of two surfactants as the process fluid—anionite AB-17 and neonol AF 9-12—is applied. The experimental results are processed using the empirical-mathematical method described in the previous article and the function proposed in it. A good approximation of the experimental concentration dependences on both coordinates is demonstrated using this function: in all the experiments considered, the coefficients of determination R2 > 0.9986. The parameters of the approximating functions are calculated. The curves of the boundaries of the achievement of the concentration of ethylbenzene in soil samples of the level of the maximum permissible concentration (MPC) ≤ 0.5 mg/kg in the EKR process are determined. Based on these data, practical recommendations are proposed for choosing the conditions and modes of conducting the EKR process, which minimize the time and financial costs and improve its quality.

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Funding

This study was carried out as part of a state assignment for Semenov Federal Research Center for Chemical Physics of the Russian Academy of Sciences on the topic 1.1., no. 122040500058-1.

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Authors and Affiliations

  1. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Moscow, Russia

    I. V. Kumpanenko, K. A. Shiyanova, E. O. Panin & O. V. Shapovalova

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  1. I. V. Kumpanenko
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  2. K. A. Shiyanova
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  3. E. O. Panin
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  4. O. V. Shapovalova
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Correspondence to K. A. Shiyanova.

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Kumpanenko, I.V., Shiyanova, K.A., Panin, E.O. et al. Spatiotemporal Profiles of Ethylbenzene Concentrations in Clay Soil During Its Electrokinetic Remediation. Russ. J. Phys. Chem. B 16, 1164–1171 (2022). https://doi.org/10.1134/S1990793122060185

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