Effect of electric field on the performance of soil electro-bioremediation with a periodic polarity reversal strategy

被引：49

作者：

Mena, E. ^{[1
]}

Villasenor, J. ^{[1
]}

Canizares, P. ^{[1
]}

Rodrigo, M. A. ^{[1
]}

机构：

[1] Univ Castilla La Mancha, Fac Chem Sci & Technol, Res Inst Chem & Environm Technol ITQUIMA, Dept Chem Engn, Campus Univ S-N, E-13071 Ciudad Real, Spain

来源：

CHEMOSPHERE | 2016年 / 146卷

关键词：

Electrobioremediation; Bioremediation; Polarity reversal; pH; Diesel; PHENOL-CONTAMINATED SOIL; IN-SITU BIOREMEDIATION; MICROBIAL COMMUNITIES; REMEDIATION; ELECTROKINETICS; BIODEGRADATION; REMOVAL; HYDROCARBONS; FEASIBILITY; SYSTEM;

D O I：

10.1016/j.chemosphere.2015.12.053

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In this work, it is studied the effect of the electric fields (within the range 0.0-1.5 V cm(-1)) on the performance of electrobioremediation with polarity reversal, using a bench scale plant with diesel spiked kaolinite with 14-d long tests. Results obtained show that the periodic changes in the polarity of the electric field results in a more efficient treatment as compared with the single electrobioremediation process, and it does not require the addition of a buffer to keep the pH within a suitable range. The soil heating was not very important and it did not cause a change in the temperature of the soil up to values incompatible with the life of microorganisms. Low values of water transported by the electro-osmosis process were attained with this strategy. After only 14 d of treatment, by using the highest electric field studied in this work (1.5 V cm(-1)), up to 35.40% of the diesel added at the beginning of the test was removed, value much higher than the 10.5% obtained by the single bioremediation technology in the same period. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：300 / 307

页数：8