Table 4 Various techniques used for treatment of soil pollution
From: Microbial remediation of polluted environment by using recombinant E. coli: a review
Sr. no | Technique | Basic approach | Application | References |
|---|---|---|---|---|
1 | Extraction and separation technique | Removal by the use of extracting agents usually organic solvents | Removal of heavy metals, hydrocarbons, and halogenated hydrocarbons | [79] |
2 | Thermal treatment | Two ways of heat treatment: | Used for the removal of volatile contaminants like toluene and trichloroethylene | [79] |
a) Removal of contaminants using the evaporation method | ||||
b) Destruction of contaminants at an appropriate temperature | ||||
3 | Chemical method | Use of strong inorganic acids, weak organic acid, and chelating agent, i.e., HCl, HNO3, H2SO4, H3PO4, NTA, EDTA | Removal of heavy metals, PTE, etc | [26] |
4 | Solid waste treatment | Chemical, physical, and biological treatment of waste by landfilling, excavation, incineration | Mainly for industrial waste treatment | [79] |