7+ Cara Menggugurkan Kandungan Tanpa Resiko (087776558899)
Phytoremediation
1. USMAN KHAN
Roll No : 16
5th Semester Of Environmental and Conservation
Sciences
University Of Swat
111/25/2019 6:57 PM
2.
• Phytoremediation
• Mechanisms and its types
• Uses and importance
• Advantages and dis-advantages
• Which type of plant/tree used ?
• How long does phytoremediation take ?
Pre-reading
2
3.
Phytoremediation:
(from Ancient Greek (phyto), meaning
'plant', and Latin remedium, meaning 'restoring
balance')
use of green plants and their microorganisms
to reduce environmental problems without the
need to excavate the contaminant material and
dispose of it elsewhere .
Also called biotransformation .
phytoremediation
3
4.
It can be used to clean up :
• Metals
• Pesticides
• Solvents
• Crude oil
• And contaminant that leak may from landfill site
• Also called leachates
4
Con…
6.
There main six main types of phytoremediation:
Types and mechanisms:
• To treat organic contaminant :
1. Phytodegredation
2. Rhizodegredation
3. Phytovolitalization
• To treat metal contaminants :
1. Phytoextraction
2. Rhizofiltration
3. phytostabilization
6
7.
1. Phytodegradation:
(also called phytotransformation) uses
plants or microorganisms to degrade organic pollutants
in the soil or within the body of the plant.
Mechanisms:
7
8.
The rhizosphere is the soil zone around the roots in
which microbial biomass is impacted by the presence
of plant roots
also known as phyto-stimulation, is the degradation
of contaminants in the rhizosphere (area of soil
surrounding the roots of the plants) by means of
microbial activity which is enhanced by the presence
of plant roots
Rhizodegredation:
8
10.
Phytovolatilization is a process, in which plants take
up contaminants from soil and release them as
volatile form into the atmosphere through
transpiration. The process occurs as growing plants
absorb water and organic contaminants.
Phytovolatilization has been primarily used to
remove mercury; the mercuric ion is converted into
less toxic elemental mercury.
10
Phytovolitalization:
12.
The use of plant to take up metal contaminants from
soil through the absorption by plant roots.
The metal absorbed are stored or accumulated in the
portions of the plants (Stems & Leaves).
These species of plants have high tolerance to heavy
metals
Phytoextraction can be used in both water and soil
environments.
12
Phytoextraction:
14.
The reduction of the mobility of heavy metals in soil.
Decreasing wind-blown dust, minimizing soil
erosion, and reducing contaminant
Helps to restore a functional ecosystem which is
otherwise polluted in a more substantial manner.
14
Rhizofiltration,
phytostabilization:
15.
• Eco-friendly
• Natural process
• Metals absorb and then recycle
• To stable contaminants and reduce
• To reduce the entry of contaminants into the site
• Prevent the leakage into ground water
• Use less equipment is compared to other
• Low capital expenditure
15
Advantages:
16.
• Take time: may be months or years
• It work best when contaminant is within reach of
plant roots
• Some plants absorb lots of contaminants which
adversely effect on food chain.
• It is not possible to achieve 100% reduction with
biological treatments
• Applicable only surface soil
16
Disadvantages:
