In situ bioremediation of hydrocarbons pdf

In situ bioremediation an overview sciencedirect topics. In situ bioremedation technology was originally developed as a less costly, more effective alternative to the standard pumpandtreat methods used to clean up aquifers and soils contaminated with organic chemicals e. Often the microorganisms metabolize the chemicals to produce carbon dioxide or methane, water and biomass. A four year field study of a hydrocarbonpolluted site showed discre pancies between. In situ bioremediation of aquifers containing polyaromatic hydrocarbons. The process of bioremediation by microorganisms those that break down hydrocarbons can be used to purge the environment of these persistent pollutant particles. Fundamental principles of bioremediation an aid to the. In situ bioremediation of crude petroleum oil polluted. Various bioremediation techniques can be applied in situ or ex situ and under aerobic. In situ bioremediation is the application of a biological treatment to clean up hazardous compounds present in the environment. Engineered approaches to in situ bioremediation of. Engineered in situ bioremediation of soil and groundwater polluted with weathered hydrocarbons. Engineered approaches to in situ bioremediation of chlorinated solvents ii foreword halogenated volatile organic compounds, including chlorinated solvents, are the most frequentlyoccurring type of soil and groundwater contaminant at superfund and other hazardous waste sites in the united states.

Both in situ and ex situ methods of bioremediation are effective, but. Low temperature ex situ bioremediation of hydrocarbon. This ex situ bioremediation strategy involved the pumping of the. Biodegradation and bioremediation of hydrocarbons in extreme. Hydrocarbondegrading microorganisms, adapted to grow and thrive in these environments, play an important role in the biological treatment of polluted extreme. You may need a pdf reader to view some of the files on this page.

Soil contamination with hydrocarbons causes extensive damage of local system since accumulation of pollutants in animals and plant tissue may cause death or mutations. Advantages of insitu remediation are a relatively low cost. Not only microorganisms but plants too help in bioremediation phytoremediation. Introduction to in situ bioremediation of groundwater pdf 86 pp, 2 mb, 20, 542r08. Another potential disadvantage of the promotion of in situ anaerobic bioremediation is that the geochemistry of the subsurface will be altered by the imposition of reducing conditions.

Icscs, 2006, manual for biological remediation techniques, international centre for soil. The optimization and control of microbial transformations of organic contaminants requires the integration of many scientific and engineering disciplines. Effective in treating wide range of chemicals including petroleum hydrocarbons two basic ways to treat petroleum hydrocarbon impacted sites by bioremediation. Comparison of ex situ and in situ techniques for bioremediation of. The process of bioremediation by microorganisms those. Solvent contaminants include a range of hydrocarbons used in. Site closure via in situ aerobic bioremediation of.

In situ bioremediation of groundwater has become one of the most widely used technologies for contaminated site treatment because of its relatively low cost, adaptability to sitespecific conditions, and efficacy when properly implemented stroo 2010. Biological methods, such as in situ bioremediation, engineered bioremediation systems, bioremediation with fungi. Two types of in situ bioremediation are distinguished based on the origin of the. Site closure via in situ aerobic bioremediation of petroleum hydrocarbons.