By Owen P. Ward, Ajay Singh (auth.), Dr. Ajay Singh, Dr. Owen P. Ward (eds.)
The creation of an enormous array of chemical compounds, specifically petroleum compounds over the last century, has brought on a major deterioration in environmental caliber. during this context, one significant chance is posed via the constantly increasing parts of infected soils and sediments.
Biotechnological equipment in response to the biodegradation of environmental toxins or phytoremediation of chronic natural contaminants and metals are being built. Bioremediation has now been used effectively to remediate many petroleum-contaminated websites. notwithstanding, there are as but no advertisement applied sciences primary to remediate the main recalcitrant contaminants, reminiscent of explosives, insecticides and metal toxins. however, bioremediation is a quickly advancing box and new bio-based remedial applied sciences are carrying on with to emerge. For this quantity, a couple of specialists from universities, govt laboratories and undefined, have contributed chapters on leading edge tools in bioremediation and phytoremediation.
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Extra info for Applied Bioremediation and Phytoremediation
Huesemann tion solely due to evaporation (Salanitro 2001), and even semi-volatile four- and five-ring PAHs were volatilized to a significant degree from soils during biotreatment (Wilson and Jones 1993; Hawthorne and Grabanski 2000). 1 Moisture Content Soil microorganisms can only biodegrade petroleum hydrocarbons within a limited range of favorable soil moisture conditions. If the soil is too dry, bacterial growth and metabolism will be greatly reduced or even inhibited. Alternatively, if the soil is too wet or fiooded, soil aeration will be greatly impaired which, in turn, will result in anaerobic conditions that are not conducive to the bio degradation of most higher molecular weight hydrocarbons.
In: Ward CH, Cherry JA, Scalf MR (eds) Subsurface Restoration, Ann Arbor Press, Chelsea, MI, pp 357-371 Huddleston RL, Bleckmann CA, Wolfe JR (1984) Land treatment biological degradation processes. In: Loehr RC, Malina JF (eds) Land treatment: a hazardous waste management alternative. Water Resources Symposium Number 13, University of Texas at Austin, pp 41-61 Huesemann MH (1994) Guidelines for land-treating petroleum hydrocatbon contaminated soils. J Soil Contam 3:299-318 Huesemann MH (1995) Predictive model for estimating the extent of petroleum hydrocarbon bio degradation in contaminated soils.
In addition, the depth of the soil layer during land farming should not exceed 30 cm since oxygen transport by diffusion will most likely be severely limited in deeper soil strata. , the addition of bulking agents, tilling, limited contaminant loading and depth) the soil is still not properly aerated, it is possible to add solid peroxygen compounds to the soil (Davis et al. 1997; Heitkamp 1997). These peroxygen additives slowly release oxygen into the soil and thereby enhance the aerobic biodegradation of petroleum hydrocarbons.
Applied Bioremediation and Phytoremediation by Owen P. Ward, Ajay Singh (auth.), Dr. Ajay Singh, Dr. Owen P. Ward (eds.)