|
Students learn about ecological consequences of detergents used to clean textiles.
|
|
Variety of experiments (for detailed experimental descriptions, see below):
- Worksheet 12: The influence of temperature on wash performance
- Worksheet 13: Improving wash performance by adding stain remover
- Worksheet 14: The effect of laundry detergent dosage and water hardness on wash performance
- Worksheet 15: The influence of laundry detergents on the growth of cress plants
- Worksheet 16: Biodegradability of surfactants – Part 1
- Worksheet 17: Biodegradability of surfactants – Part 2
- Worksheet 18: Biodegradability of surfactants – Part 3
- Worksheet 19: Biodegradability of surfactants – Part 4
- Worksheet 20: Ecological impacts of the phosphates previously used in laundry detergents
- Worksheet 21: Sustainability in the laundry detergent industry
|
- This activity includes several experiments that focus on the sustainability of laundry detergents. The experiments can be performed in the form of a learning cycle or different experiments can be selected to be performed by the whole class.
- Providing an opportunity for incorporating ICT: include aspect where students can create/watch podcasted interviews with experts working in the production or the management, giving information on how and why decisions are taken and a new process is initiated etc.
|
| Source of Worksheets 12-21 and corresponding Materials: |
| Henkel (2008): Sustainable washing for a clean environment – Chemistry for advanced classes (14 – 18 year old). Access to complete unit at http://www.henkel.com/com/content_data/106612_4.8.2_Sustainable_washing_for_a_clean_environment_Chemistry_for_Advanced.pdf. |