In the mid 2000s Christchurch engineer Ian Bywater invented BioGenCool – a process that extracts the biogas (methane and carbon dioxide) from cow effluent using novel biodigester technology. After production it is then cleaned and used as fuel in a co-generation plant to generate electricity. This case study looks at this system and provides extensive curriculumlinked discussion points.

Characteristics of Technology

• Transformation of material and energy

Characteristics of technological outcomes

• Physical and functional properties

Technological modelling

• Functional and practical reasoning

Technological products

• Appropriate use of materials to enhance fitness for purpose

Technological systems

• Integration of sub-systems; operational parameters; use of specialist language

• Natural Systems Ltd: Turning waste problems into energy and environmental solutions
• Curriculum related activites and discussion questions relating to identified focus points are on pages 3 and 4 of this Case Study's PDF.