Scribd
Upload
436 views14 pages

Bioremediation

Bioremediation is the process of using microorganisms like bacteria and fungi to degrade contaminants in the environment into less toxic or non-toxic substances. It involves placing microbes within a contaminated site where they break down organic contaminants into carbon dioxide, water, and fatty acids. There are different types of bioremediation including in situ, ex situ, biotransformation, and phytoremediation which uses plants. The process is advantageous as it is natural and cost-effective but it may be slow and break down products could still be toxic.

Uploaded by

Rajesh Guru
Copyright
© Attribution Non-Commercial (BY-NC)
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PPT, PDF, TXT or read online on Scribd
436 views14 pages

Bioremediation

Bioremediation is the process of using microorganisms like bacteria and fungi to degrade contaminants in the environment into less toxic or non-toxic substances. It involves placing microbes within a contaminated site where they break down organic contaminants into carbon dioxide, water, and fatty acids. There are different types of bioremediation including in situ, ex situ, biotransformation, and phytoremediation which uses plants. The process is advantageous as it is natural and cost-effective but it may be slow and break down products could still be toxic.

Uploaded by

Rajesh Guru
Copyright
© Attribution Non-Commercial (BY-NC)
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PPT, PDF, TXT or read online on Scribd
You are on page 1/ 14

m    

  
 


u  
u !" #"$"

contents

‡ What is BIOREMEDIATION
uDefination
uMicrobes Involved
uTypes
uProcess
uApproaches
uAdvantages
uDisadvantages
‡ It is the completely
safe and natural
process of cleaning up
organic contaminants
through the use of
microbes.
‡ Process to transform
harmful substances
into non-toxic carbon
dioxide, water and
fatty acids.
?
HOW
V OBE OLED

‡ Aerobic Bacteria
‡ An-aerobic Bacteria
‡ Ligninolytic fungi
‡ Methylotrophs
 ES OF B OEVED  O

‡ Biotransformation

‡ Biodegradation

‡ Mineralization
OESS
The bacteria involved in the process of
bioremediation are placed within the
contaminated site in which they immediately
begin to start breaking down the organic
contaminant.
This "breaking down" process consists of these
microbes breaking the carbon chains of which
make up all organic molecules.
The microbes thus work on breaking down the
carbon chains until the contaminant is eliminated
and no longer an environmental threat.
As a result of this process carbon dioxide and
water are left behind as by-products with trace
elements of fatty acid.
OHES
‡ Situ  
iatio 

‡ Bioventing
‡ In situ biodegradation
‡ Biosparging
‡ Bioaugmentation
Ex itu  
iatio
uLandfarming
uComposting
uBiopiles
uBioreactors
PHYTOREMEDIATION
‡ Phytoextraction
‡ Phytotransformation
‡ Phytostabilization
‡ Phytodegradation
‡ Rhizofiltration
Microbes as Biodegraders
‡ Aerobic
‡ Ex:-Pseudomonas, Alcaligenes,
Sphingomonas, Rhodococcus &
Mycobacterium
‡ Anaerobic
‡ bioremediation of polychlorinat-
edbiphenyls (PCBs) in river
sediments, dechlorination of the
solvent trichloroethylene (TCE), &
chloroform.
‡ Ex:-Ligninolytic fungi. Fungi such as
the white rot fungusPhanaerochaete
chrysosporium.
D E
Bioremediation is a natural process
and is directly related to microbes.
It is useful for the complete destruction of
a wide variety of contaminants & many
compounds that are legally considered to
be hazardous.
Natural treatment and environmentally
safe.
Exposure risks are at minimal.
Costeffective.
D SD E
Incomplete transformation.
There are some concerns that the products
of biodegradation may be more persistent or
toxic than the parent compound.
Biological processes are often highly specific.
Technology still at its infancy.
Bioremediation often takes longer than other
treatment options.
Regulatory uncertainty remains regarding
acceptable performance criteria for
bioremediation.
w  
   


You might also like