Introduction The clean Tech Revolution Objectives Main Characteristics of Clean Technology Cleaner Technology principles Cleaner Technology practices Top 10 clean technology breakthroughs Challenges or disadvantages of Green Technology Conclusion

2. Md. Rased Hasan Sojib
Roll : 17103433
Department of Environmental Science and Engineering
Jatiya Kabi Kazi Nazrul Islam University,Trishal,Mymensingh
Clean Technology

3. Outline
• Introduction
• The clean Tech Revolution
• Objectives
• Main Characteristics of Clean Technology
• Cleaner Technology principles
• Cleaner Technology practices
• Top 10 clean technology breakthroughs
• Challenges or disadvantages of Green Technology
• Conclusion

4. Introduction
“Clean technology is also referred to as cleantech, green technology, and
greentech. It defines a set of technologies that either reduce or optimize
the use of natural resources, pollution control, resource reduction and
management, end of life strategy, waste reduction, energy efficiency,
carbon mitigation and profitability.”
(Source: Azocleantech
Or
"The continuous application of an integrated preventive environmental
strategy applied to processes, products, and services to increase overall
efficiency and reduce risks to humans and the environment."
(United Nations Environment Programme)

5. The clean Tech Revolution

6. Objectives of Clean technology
The objectives of clean technology of production are as follows:
Sustainable energy and energy optimization to reduce dependence on
fossil fuels
To reduce levels of polluting emission and waste generation thereby
protecting or improving the environmental quality.
To use raw materials and energy more efficiently.
To encourage utilization of residues, recyclable waste and local materials
as raw materials for conversion processes.
To provide local employment.
To enhance the quality of life.

7. Main Characteristics of Clean
Technology
Conservation of raw materials
1
Optimization of production process
2
Rational use of water and energy
3
Recycling of unavoidable waste
4
Restoring sites after cessation of activities
5

8. Cleaner Technology Principles
Principle
Conservation
Principle
Precaution
Principle
Preventive
Principle
Integration

9. Cleaner Technology Practices
1. Good Housekeeping
Leaks
To enforce
existing operational
Instructions

10. Cleaner Technology Practices
2. Input substitution
Substitute input materials
1
By less toxic
2
By renewable materials
3
By adjunct materials which have a longer service life
4
Time
in production
5

11. Cleaner Technology practices
4. Equipment modification:
Run the processes at higher efficiency
Lower waste and emission generation rates

12. Cleaner Technology practices
5. Technology change :
Replacement of the
Technology
Synthesis pathway
in order to minimize
waste and emission
generation during
production
Processing
sequence

13. Cleaner Technology Practices
6. Product modification

14. Clean
Technology
Breakthroughs

15. 1. Algae Biofuels

16. Algae Biofuels

17. 2. Zinc-Air Batteries
• With world zinc resources being 100 times more plentiful
than lithium ion, a move to zinc-air batteries has the
potential to make laptops more portable, electric vehicles
more affordable and hearing aids more reliable.
• Zinc is recyclable, relatively cheap and has a high energy
density. Currently used in non-rechargeable form in
hearing aids, zinc batteries are expected to be launched in
a rechargeable, longer-lasting version in a few years, with
an extension of use to computers and cars later.

18. 3. Organic solar cells

19. 4. Marine Energy
Figure: Tidal Energy

20. Smart Lighting

21. Reliable offshore wind technology

22. Cost-effective Desalination
Processes

23. Carbon capture and storage
 Carbon capture and storage (CCS) is capable of reducing carbon
emissions from gas and coal power plants, cement producers
and other large emitters by up to 90 per cent.
 Confusion over funding has made the realisation of plans lag
behind the science.
 More than 200 UK scientists at 36 universities are currently
involved in CCS research.
 The International Energy Agency predicts a need for more than
3,000 CCS systems worldwide by 2050 if temperatures are not to
rise by more than 2 degrees .

24. Solar Power

25. Precision Agriculture
• Clean-tech solutions for
agriculture help conserve water
and reduce the use of pesticides
and herbicides by targeting
applications only where they are
needed.

26. Electric Vehicles
•
(EVs) and charging systems. With motor vehicles
being the largest producers of greenhouse
gases worldwide, electric vehicles and EV
charging stations are among the fastest growing
forms of cleantech.

27. Sustainable Development Goals
Sustainable Development Goals
Goal 6: "Ensure availability and sustainable management of water and sanitation for all
Goal 7: "Ensure access to affordable, reliable, sustainable and modern energy for all"
Goal 11: "Make cities and human settlements inclusive, safe, resilient and sustainable"
Goal 13: "Take urgent action to combat climate change and its impacts”
Paris Agreement

28. Challenges or Disadvantages of Green
Technology
Following are the disadvantages of Green Technology:

29. Conclusion