Solving Environmental Problems through Engineering

CONTENTS OF CURRICULUM UNIT 20.04.04

  1. Unit Guide
  1. INTRODUCTION
  2. Rare Earth Elements
  3. RATIONALE
  4. CONTENT OBJECTIVES (aligned to science standards)
  5. BACKGROUND CONTENT 
  6. Recycling REEs in Magnets  
  7. TEACHING STRATEGIES: (Aligned to the Content Objectives)
  8. UNIT ACTIVITIES
  9. APPENDIX ON IMPLEMENTING DISTRICT STANDARDS
  10. STUDENT RESOURCES
  11. Anticipation Guide
  12. TEACHER RESOURCES
  13. BIBLIOGRAPHY
  14. Notes

The Life Cycle of Rare Earth Elements

Cristobal Rene Carambo

Published September 2020

Tools for this Unit:

TEACHER RESOURCES

Day One

Table 2: Applications of Rare Earth Elements

REE

Applications Products

Scandium

Aerospace materials, electronics, lasers, magnets, lighting, sporting goods

Yttrium

Ceramics, communication systems, lighting, frequency meters, fuels additive, jet engine turbines, televisions, microwave communications, satellites, vehicle oxygen sensors

Lanthanum

Catalyst in petroleum refining, television, energy storage, fuel cells, night vision instruments, rechargeable batteries

Cerium

Catalytic converters, Catalyst in petroleum refining, glass, diesel fuel additive, polishing agent, pollution-control systems

Praseodymium

Aircraft engine alloy, airport signal lenses, catalyst, ceramics, coloring pigment, electric vehicles, fiber optic cables, lighter flint, magnets, wind turbines, photographic filters, welder’s glasses

Neodymium

Anti-lock brakes, air bags, anti-glare glass, cell phones, computers, electric vehicles, lasers, MRI machines, magnets, wind turbines

Promethium

Beta source for thickness gages, lasers for submarines, nuclear powered battery

Samarium

Aircraft electrical systems, electronic counter measure equipment, electric vehicles, flight control surfaces, missile and radar systems, optical glass, permanent magnets, precision guided munitions, stealth technology, wind turbines

Europium

CFL, lasers, televisions, tag complex for the medical field

Gadolinium

Computer data technology, magneto-optic recording technology, microwave applications, MRI machines, power plant radiation leaks detector

Terbium

CFL, electric vehicles, fuel cells, televisions, optic data recording, permanent magnets, wind turbines

Dysprosium

Electric vehicles, home electronics, lasers, permanent magnets, wind turbines

Holmium

Microwave equipment, color glass

Erbium

Color glass, fiber optic data transmission, lasers

Thulium

X-ray phosphors  Improving

Ytterbium

Improving stainless steel properties, stress gages Catalysts,

Lutetium

Catalysts, positron emission tomography (PET) detectors

Video: Rare Earth Elements and How They are Used: https://www.youtube.com/watch?v=e2xHfP4lAlg

Table: Benefits and Environmental Impact of Rare Earth Elements

Element & Atomic #

Use: (Product or Product System)

Benefits

Environmental Impact

 

 

 

 

Homework: Article Life Without Rare Earth Elements”  (http://www.acschemmatters-digital.org/acschemmatters/december2016?pg=14#pg14

Day Two:

Ecological Footprint Calculator:  https://www.footprintcalculator.org/

Video:  Environmental Impacts of Rare Earth Elements: https://www.youtube.com/watch?v=f_PbVCgdut4

Life Cycle Assessment PowerPoint: https://www.dartmouth.edu/~cushman/courses/engs37/LCA.pdf

Video:

A Life Cycle Assessment: A Materials Perspective: https://www.youtube.com/watch?v=Z4LOqt7U-JE

Day Three:

Design Life Cycle: http://www.designlife-cycle.com

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