In this study, the remediation of a diesel hydrocarbon-polluted clay soil using an electrochemical-biological combined technology is assessed.
In our tests, we used pure clay (kaolinite) polluted with Cu2+ at an initial concentration of 200 mg kg−1.
This study investigated the remediation of clay soil polluted with low-solubility organics (diesel hydrocarbons) using a combined electrochemical-biological technology.
Microbial activity in a clay soil historically polluted with creosote was promoted using a specially designed electrokinetic cell with a permanent anode-to-cathode flow and controlled pH.
Batch tests were conducted to measure the permeability as well as the compressibility and the shear strength of the compacted clay that was polluted by landfill leachate under different concentrations.
This study assessed the benefits of bioaugmentation with the strain Rhodococcus erythropolis T902.1 versus those from biostimulation and anaerobic natural attenuation in terms of hydrocarbon (HC) degradation efficiency and changes in the bacterial community structure in a diesel-polluted clay-rich soil.
The standard deviation at the base of outcrop Th03 reaches 1.52, probably as the result of the presence of rip-up clasts which polluted the sand with an important amount of clay.
Table 4 Standard of SFPI (P_{i}) (le 0.4) (0.4 sim 1.0) (1.0 sim 2.0) (2.0 sim 5.0) (> 5.0) Pollution levels Not-polluted Slight polluted Medium polluted Heavy polluted Serious polluted.
The communities were surrounded by opencast mines, old clay quarries, spoil heaps, derelict coal workings, polluted waterways and all the other ecological wreckage of heavy industry.
Therefore, clay barriers are employed to seal Cs-137 polluted areas and nuclear waste repositories.
A temperature of 175 °C is sufficient to remedy diesel polluted sandy and silty soils, whereas a higher temperature (250 °C) is needed for clays.
