Sorting Recycled Trash: An Activity for Earth Day 2007
| Autor: | Mary E. Harris, Harold H. Harris |
|---|---|
| Rok vydání: | 2007 |
| Předmět: | |
| Zdroj: | Journal of Chemical Education. 84:207 |
| ISSN: | 1938-1328 0021-9584 |
| DOI: | 10.1021/ed084p207 |
| Popis: | Students are usually oblivious to the fate of discarded materials, and particularly to how recyclables must be processed in order to re-enter the manufacturing stream. In this activity, middle or high school students separate commingled recyclable trash to simulate sorting in a recycling center. Like many such real centers, this imaginary "solid waste recycle and reuse center" accepts newspaper, steel cans, aluminum, glass, LDPE bags, PETE bottles, and HDPE containers. Sorting is the first step in this process. Students design a recycle plant system that constitutes an "automated" process of sorting recyclables. Knowledge of physical properties of the components of "trash" must be applied. This is an open inquiry activity that requires students to apply concepts they have learned previously. There is no one "right" answer. A flow chart and conveyor belt are designed by a team of students that show how they separated their components in the waste stream of their factory. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|