In-Situ Bioremediation Quiz

Bioremediation technologies can be generally classified as: (1) In-Situ bioremediation In situ bioremediation techniques involve at-site application of decontamination methods to treat contaminated soil or groundwater with negligible disruption to soil structure. In situ bioremediation is used to treat chlorinated solvents, dyes, heavy metals, and hydrocarbons polluted sites. Common examples of in situ applications include phytoremediation. The benefit of in situ treatment are: 1) It is a low cost, 2) low maintenance, 3) environmentally friendly 4) sustainable approach for the clean-up of the contaminated natural surroundings. 5) it prevents the spread of contamination during the transport of the contaminated material. (2) Ex-Situ bioremediation Ex-situ involves excavating pollutants from polluted sites and subsequently transporting them to another site for biotreatment. The benefit of ex situ treatment is: 1) ex-situ bioremediation may be necessary if the climate is too cold for microbe activity, or 2) the soil is too dense for nutrients to be spread evenly. 3) helps to contain and control the bioremediation products, 4) as well as making the area that was contaminated available for another use. Mechanism of microbial degradation of petroleum pollutants The degradation of petroleum hydrocarbons by microorganisms is mainly caused by the catalysis of intracellular enzymes.