Management of E-Waste - JSS 3 Digital Note
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Management of E-Waste - JSS 3 Digital Technologies
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MANAGEMENT OF E-WASTE
Subject: Digital Technologies
Class: JSS 3
Term: Third Term
Week: 1
Topic: Management of E-Waste
Duration: 40 Minutes
Class: JSS 3
Term: Third Term
Week: 1
Topic: Management of E-Waste
Duration: 40 Minutes
Learning Objectives
By the end of the lesson, students should be able to:
- Define e-waste.
- Identify common sources of e-waste.
- Explain safe disposal methods for e-waste.
- Describe the environmental effects of e-waste.
1. Meaning of E-Waste
E-waste means electrical and electronic equipment that has been discarded because it is unwanted, damaged, obsolete or no longer useful to its owner.
E-waste is also called electronic waste. It includes discarded devices and equipment that depend on electricity or batteries to operate.
Examples include broken mobile phones, damaged computers, faulty televisions, discarded printers and used electronic accessories.
Some discarded electronic devices may still work. They can become e-waste when their owners no longer want or need them.
E-waste may contain useful materials that can be recovered and reused. However, some devices also contain hazardous substances that can harm people and the environment when they are handled or discarded improperly.
2. Sources of E-Waste
Sources of e-waste are the places, activities or types of equipment from which discarded electrical and electronic items originate. Common sources include:a. Homes and Households
Homes produce e-waste when household members discard old or damaged electronic equipment. Examples include:- Old mobile phones and chargers.
- Broken televisions and radios.
- Faulty refrigerators and other electrical appliances.
- Used batteries and electronic accessories.
b. Schools and Educational Institutions
Schools generate e-waste when electronic equipment becomes faulty, outdated or unusable. Examples include:- Damaged desktop and laptop computers.
- Faulty printers and projectors.
- Discarded keyboards, mice and cables.
c. Offices and Business Organisations
Offices and businesses generate e-waste when they replace or discard electronic equipment. Examples include:- Old computers and monitors.
- Faulty photocopiers and printers.
- Discarded communication devices.
d. Electronic Repair and Service Centres
Repair centres can generate e-waste from damaged parts removed during repairs and devices that cannot be repaired economically. Examples include damaged circuit boards, broken screens, faulty electronic components and unusable batteries.e. Industries and Commercial Establishments
Factories, shops and other commercial establishments may discard electronic control equipment, communication devices, computers and other electrical equipment when they become obsolete or unusable.
Remember: The main sources of e-waste are places where electrical and electronic equipment is used, repaired, replaced or discarded.
3. Safe Disposal Methods of E-Waste
Safe disposal means handling and getting rid of unwanted electronic equipment in ways that reduce harm to people and the environment. E-waste should not be treated like ordinary household rubbish because some electronic items contain hazardous materials. The following are safe methods of disposing of e-waste.a. Use Authorised E-Waste Collection Centres
Take unwanted electronic equipment to recognised e-waste collection centres or approved recycling facilities. These centres can sort and handle electronic waste appropriately.b. Return Devices Through Manufacturer or Retailer Take-Back Programmes
Some manufacturers and electronics retailers accept old devices for collection, refurbishment or recycling. Users should check whether such programmes are available.c. Use Qualified Electronic Waste Recyclers
Electronic waste should be given to qualified recyclers who can recover useful materials and handle hazardous components safely.d. Return Batteries and Hazardous Components to Appropriate Collection Points
Some batteries and electronic components require special handling. They should be kept separate where appropriate and taken to suitable collection facilities.e. Donate Working Devices for Reuse
A device that still works and is safe to use may be donated to a school, community organisation or another person who needs it. This extends the device's useful life and delays disposal. Before donating a device, the owner should remove personal information and accounts from it.f. Follow Local Waste-Management Guidance
People should follow the disposal instructions provided by relevant local authorities and recognised waste-management organisations.
Unsafe practices to avoid:
- Burning electronic waste in the open.
- Dumping electronic devices into rivers, drains or other water bodies.
- Throwing hazardous electronic waste into places where it can contaminate soil or water.
- Breaking electronic devices apart without appropriate training or protective equipment.
4. Environmental Effects of E-Waste
When e-waste is dumped, burned or dismantled carelessly, it can harm the environment in several ways.a. Soil Pollution
Hazardous substances from discarded electronic equipment can enter the soil. This may reduce soil quality and affect plants and other organisms.b. Water Pollution
Rainwater can carry harmful substances from improperly discarded electronic waste into streams, rivers and groundwater. This can affect aquatic organisms and water quality.c. Air Pollution
Burning electronic waste, especially plastics and coated wires, can release harmful smoke and toxic substances into the air.d. Harm to Plants and Animals
Polluted soil and water can expose plants and animals to hazardous substances. Animals may also be harmed by contact with contaminated waste.e. Risks to Human Health
People may be exposed to hazardous substances when they handle, burn or dismantle e-waste without appropriate protection. Exposure can occur through breathing contaminated smoke or dust, swallowing contaminated materials, or contact with hazardous substances. Children and people who work in informal e-waste processing may face particular risks.f. Waste Accumulation and Loss of Useful Materials
Discarded electronic equipment occupies space in dumpsites. When useful metals, plastics and other materials are not recovered, additional natural resources may be needed to manufacture new products.| Environmental Effect | How It Happens |
|---|---|
| Soil pollution | Harmful substances enter the soil from improperly discarded equipment. |
| Water pollution | Contaminants from e-waste enter rivers, streams or groundwater. |
| Air pollution | Burning e-waste releases harmful smoke and substances. |
| Harm to living things | Plants, animals and people may be exposed to hazardous substances. |
| Loss of useful materials | Valuable materials are wasted when discarded devices are not properly recovered. |
Class Activity
Activity: Identifying and Managing E-Waste
Study pictures of discarded electronic devices provided by your teacher.
- Identify five electronic items that may become e-waste.
- State where each item could come from.
- Suggest a safe disposal method for each item.
- Describe one environmental effect that could result from improper disposal.
Expected outcome: Students should be able to connect examples of e-waste with their sources, safe disposal methods and possible environmental effects.
Lesson Summary
- E-waste is discarded electrical and electronic equipment.
- Common sources include homes, schools, offices, repair centres and industries.
- Safe disposal methods include authorised collection, approved recycling, suitable take-back programmes and donating working devices for reuse.
- Improper disposal can cause soil, water and air pollution, harm living things and waste useful materials.
Evaluation Questions
- Define e-waste.
- List four common sources of e-waste.
- Explain three safe methods of disposing of e-waste.
- Describe four environmental effects of improper e-waste disposal.
Assignment
- Write the meaning of e-waste in your own words.
- Identify five examples of e-waste that may be found in homes or schools.
- Explain three safe methods of disposing of e-waste.
- Describe four ways improper disposal of e-waste can affect the environment.
Interactive Revision Quiz
Choose one answer for each question and click Mark Quiz to see your score.
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