Mr. Rogers - IB Design Technology Objectives
Syllabus 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter
Clean Tech Manufacturing    
Lesson Plan Practice Test Study Guide


Topic 6: Clean Technology and Green Design
The addition of clean-up technologies to the end of the manufacturing
process is termed “end-of-pipe” approach.
Outline that an initial response to reducing emission of pollutants is adding
clean-up technologies to the end of the manufacturing process.

6.1.5 Reasons include promoting positive impacts; ensuring neutral impact or minimizing negative impacts through conserving natural resources, reducing pollution and use of energy; and wastage of energy or resources.

6.1.4 Outline the reasons for clean technology. Clean technologies emerged as a result of greater pressure for environmental protection. They generate less pollution and waste and adopt more efficient use of energy and materials. Smokestack industries, such as iron and steel manufacture, are heavy consumers of raw materials and energy and are heavy polluters. State that initially clean technology was aimed mainly at developing cleaner manufacturing processes.


Examples include:

• climate changes as a result of production of greenhouse gases such as carbon dioxide due to the burning of fossil fuels

• sulfur dioxide from British power stations blowing across the North Sea to Scandinavia causing acid rain which damages forests

• the destruction of the ozone layer by the use of chlorofluorocarbon (CFC) gases as propellants for aerosols, as refrigerants and in the manufacture of plastic foams, thus reducing the protection from harmful ultraviolet radiation and increasing the incidence of skin cancer. Outline three examples of damage to the natural environment caused by the use of technology.


6.1.1 Define clean technology.

6.1 Clean Technology (3h)