Fine Filters: Filtering Solutions for Clean Water
(Complete Item Description)
- Abstract:
This unit focuses on the scarcity of safe drinking water across the world, some of the science basics of water, how water can be cleaned through a series of filtration steps, and how nanofiltration can be used as a cost-effective way to solve filtration problems. Upon completing this unit, students will understand: A shortage of clean drinking water is one of the most pressing global issues: As a result of water’s bent shape and polarity, water has unique properties, such as an ability to dissolve most substances. These properties are responsible for many important characteristics of nature; Pollutants can be separated from water using a variety of filtration methods. The smaller the particle that is to be separated from a solution, the smaller the required pore size of the filter and the higher the cost of the process; Innovations using nanotechnology to create a new generation of membranes for water filtration are designed to solve some critical problems in a cost-effective way that allows for widespread use. Length: 3 lessons, up to 7 50-minute classroom periods if all lessons are used. Not all lessons are required. Use the lessons most appropriate for your students.
- Subject:
- Science and Technology
- Grade Level:
- Secondary
- SubTopics:
- Water
- Collection:
- National Center for Learning and Teaching