Methods Of Bioremediation
Bioremediation processes vary in their methods of remediation. Depending upon the location of the contamination Bioremediation techniques can either be applied to the surface and subsurface, or require above ground remediation. Surface and subsurface Bioremediation deals with contaminated soil down to twelve inches below ground level. In this technique water and nutrients are added, in addition to tilling the soil, in order to optimize bacterial growth and begin the bioremediation process. In oppose to techniques that are directly applied to surface and subsurface contaminations, above ground bioremediation involves treatment of soils out of the given area. Such treatments used in above ground bioremediation include that of slurry-phase and solid-phase remediation. Slurry-phase treatment involves the initial combination of water with the contaminated soil and later degradation in a bioreactor. Solid-phase treatment achieves the similar goal of the former treatment yet, in this process, the contaminated soil is placed in a bed and nourished with nutrients, moisture and oxygen in hopes that decomposition will occur.
