Bioremediation is a technique for removing/converting harmful contaminants like heavy metals into less harmful substances; and/or removing toxic elements from the contaminated environment; or degrading organic substances and ultimate mineralization of organic substances into carbon dioxide, water, nitrogen gas, etc..
Which is the best definition of bioremediation?
Bioremediation is a branch of biotechnology that employs the use of living organisms, like microbes and bacteria, in the removal of contaminants, pollutants, and toxins from soil, water, and other environments. Bioremediation is used to clean up oil spills or contaminated groundwater.
What do you mean by bioremediation?
Bioremediation is a process that uses mainly microorganisms, plants, or microbial or plant enzymes to detoxify contaminants in the soil and other environments.
What are heavy metals Slideshare?
The term heavy metal refers to any metallic chemical element that has a relatively high density and is toxic or poisonous at low concentrations.
How do heavy metals affect microbes?
However, heavy metals affect the growth, morphology, and metabolism of soil microorganisms, through functional disturbance, protein denaturation or the destruction of the integrity of cell membranes (Leita et al., 1995).
What is environmental bioremediation?
Bioremediation is a process used to treat contaminated media, including water, soil and subsurface material, by altering environmental conditions to stimulate growth of microorganisms and degrade the target pollutants.
What is bioremediation give example?
Bioremediation companies that specialize in soil and groundwater use microbes that feed on the hazardous substances for energy, which results in the breakdown of the targeted contaminant. Examples include junkyards, industrial spills, land development, fertilizer use, and more.
What is bioremediation is bioremediation a solution for pollution explain?
Bioremediation uses micro-organisms to reduce pollution through the biological degradation of pollutants into non-toxic substances. This can involve either aerobic or anaerobic micro-organisms that often use this breakdown as an energy source.
What is meant by heavy metal?
The term heavy metal refers to any metallic chemical element that has a relatively high density and is toxic or poisonous at low concentrations. Examples of heavy metals include mercury (Hg), cadmium (Cd), arsenic (As), chromium (Cr), thallium (Tl), and lead (Pb).
What is heavy metal analysis?
Determination of heavy metals is done using Atomic Absorption-(AAS), Inductively Coupled Plasma Optical Emission-(ICP-OES) and Inductively Coupled Plasma Mass Spectrometry (ICP-MS). …
How can bioremediation be used to remove heavy metals?
Bioremediation of heavy metals using microbes. Bioremediation using genetically engineered microbes. Biosorption and bioaugmentation of toxic heavy metals. Bioremediation is an inventive and optimistic technology which is applicable for the retrieval and reduction of heavy metals in water and polluted lands.
What is bioremediation in microbial population?
Microbial population utilizes toxic heavy metals as a source of nutrition in bioremediation. There are two sites at which bioremediation can be performed: on site contamination ( in situ) or on contamination which is brought away from its native place ( ex situ ).
How to deal with heavy metals in soil remediation?
Indeed, when dealing with the remediation of soil contaminated with organic compounds, one must also account for the bioavailability of heavy metals. Generally, bioremediation technologies are performed either in situ or ex situ.
Is bioremediation a good alternative to conventional clean up technologies?
Bioremediation is a good alternative to conventional clean up technologies. Use of microbial systems for metal bioremediation is most preferred because of its low cost and low waste generating techniques.
