The document discusses the fundamentals and applications of nanotechnology, particularly in environmental sciences, detailing its characteristics, tools, and potential benefits for pollution remediation. It highlights various applications such as air and water pollution management, oil spill cleanup, and advancements in filtration systems using nanoparticles. The conclusion emphasizes the rapid growth of nanotechnology while noting the need for increased funding in its environmental impact research.

1. By:
J. Jenson Samraj
Integrated MSc II Year
Environmental Sciences
MSU
Alwarkurichi - 627 412

2. Introduction
Product Characteristics
Tools used in Nanotechnology
Natural Nanomaterials
Applications
Conclusion

3. Introduction to Nanotechnology
The branch of technology that deals with the
matter,
ranging less than 100 nanometers.

4. Product Characteristics
High Surface Area
Catalytic Activities
Adsorbent
Natural and Synthetic
Wide range of Applications

5. Tools in Nanotechnology

6. TEM AFM
STM

7. Natural Nanomaterials

12. Air Pollution
Nanofibre catalysis
➢ Made of MnO2
➢ Removes volatile organic
compound from industrial
smokestacks.
Nanostructured Membrane
➢Separate Methane or CO2
from exhaust.
➢Japanese researchers found
soot filtered from Diesel fuel
emission for CNTs.

13. Water Pollution
✓Harmful Pollutant in water turned to harmless chemicals.
✓Trichloroethane – Dangerous Pollutant in Industrial wastewater
treated by Nanoparticle

14. Cleaning up Oil Spills
i)Nanowires – Clean up oil spills & Organic Pollutant.
ii)Form mesh absorbs 20x its weight i
hydrophobic liquids.
iii)EPA – 14,000 Oil spills report
each year.

15. Samsung Electronics has launched new Nano e-
HEPA (for electric high efficiency particulate
arrest) filtration system.
The system sifts the air to filter particles,
eliminate undesirable odours and kill airborne
health threats.
It uses a metal dust filter that has been coated
with 8 nm silver particles.
The Kitasato Research Centre of Environmental
Sciences in Japan found the nonfilter killed 99.7%
of influenza viruses.
Upto 98% of odours were eliminated.

18. • Fe nanoparticles – High surface area & reactivity, detoxify
carcinogenic chlorinated hydrocarbons in groundwater.
• TiO2 Photocatalysis - rapidly expanding tech for wastewater
treatment.

19. • Nanomesh-Has holes much smaller tha
lifesaver bottle.

21. Ag Nanocluster Propylene Oxide

22. Solar Panel Nanotechnology
❖Solar panels use self-cleaning glass.
❖This keeps the panels free of dirt and debris.
❖PV cells receive as much of the incident solar energy as
possible.

23. Self-cleaning materials

24. • Used in clothing as anti-microbial agent
• Socks contain nano-silver
Nano Silver

25. Conclusion
• Nanotechnology is growing fast.
• Funding in environmental impacts and toxicity is still low
comparing with funding to nanotech development.
• There are great potentials for environmental engineering
application and cleaner energy generation.

26. "Nanotechnology is a curse or blessing to human civilization,
all depends on how we manage it.”
- J. Jenson

27. Reference
A Textbook of ENVIRONMENTAL NANOTECHNOLOGY by
M.H. Fulekar Bhawana Pathak.
http://www.slideshare.net/SumerPankaj1/environmental-
nanotechnology.