Seminar presentation on Electronic waste/E waste

Govt. Engg. College Ajmer

SEMINARON

“E-WASTE”

GUIDED BY:- SUBMITTED BY:- Mr MUKESH GUPTA SHUBHAM GUPTA

VIII SEMESTER 12EC79

CONTENTS

1. What is e-waste ?

2. Sources of e-waste

3. Categories of e-waste

4. Composition of e-waste

5. Hazards associated with e-waste

6. E-waste scenario in India

7. State & City wise e-waste scenario

8. E-waste Disposal

9. Recycling of E-waste

10.Conclusion

E-waste ?

It may be defined as, computers, office electronic

equipment, entertainment devices & many other

electronic or electrical devices which are

unwanted, broken & discarded by their original

users are known as ‘E-Waste’ or ‘Electronic Waste’

E-waste

Sources of E-waste

Categories of E-Waste

Large household appliances

Small household appliances

IT & Telecommunication equipment

Consumer equipment

Lighting equipment

Electrical and electronic tools

Toys and sport equipment

Medical devices

Monitoring and control instruments

automatic dispensers

Today’s Electronic Gadgets,

Tomorrow’s Electronic Waste !!!

How these become E-Waste?

Reasons:-

Advancement in technology

Changes in Style, Fashion & Status

Nearing the end of their useful life

Not taking precautions while handling them

Composition of E-waste

Electronic appliances are composed of hundreds

of different materials that can be both toxic and

equally of high value. While majority materials

such as iron, aluminium, plastics and glass

account for over 80 % weight of e-waste,

whereas valuable and toxic materials are found in

smaller quantities but are still of high importance.

Hazards associated with E-waste

There are many harmful materials used in consumer

electronics include :

Lead

Mercury

Cadmium

Hexavalent chromium

Plastic including PVC etc.

Effects on human & environment

E-waste scenario in India

India generates about 4.1 million tonnes of

e-waste currently and it is expected to reach

8 million tonnes by 2025. In India e-waste is

growing at the rate of 10% per annum and it

constitutes 3- 8% of municipal solid waste.

State & City wise E-waste scenario

E-Waste Disposal

Methods of treatment & disposal Landfilling

Incineration

Pyrolysis

Existing E-Waste Management Practices in India

Plastic Waste

Products made from plastics such as keyboards, casing, front or real

panel. Miscellaneous parts encased in plastics Management Practice - The shredding &

melting

Printed Circuit Board Waste Used in electronic parts such as motherboard, TV internal circuits, etc.

Management Practice – De soldering & open burning to remove metals.

Miscellaneous Waste

Chips, electronic wires, broken glass waste, copper containing waste.

Management Practice- Chemical stripping & open burning & some of the waste is mixed with the

municipal solid waste

Liquid Waste

It contains internal chemicals, general waste, acid stripping waste. Management Practice

-Sewerage system

Recycling of E-Waste

Disassembly/dismantling

Disassembly is the systematic removal of components, parts, a group of parts or a

subassembly from a product which is in E-Waste.

Upgrading

It includes comminuting and separation of materials using mechanical / physical and/or

metallurgical processing. Methods to recover materials include incineration and refining.

Materials Recovery

The material are recovered by recycling facilities. The plastic, glass, metals can be

recovered by sorting them before mixing with other waste.

Block Diagram of Recycling

While the world is marvelling at the

technological revolution, countries like India

are facing an imminent danger.

E-waste of developed countries, such as the

US, dispose their wastes to India and other

Asian countries.

Major reasons for exports are cheap labour.

Recycling a computer costs USA and Europe

20 US dollars whereas India only 2 US dollars.

Indian Scenario

Advantages of Recycling E-Waste

•Asset recovery

•Reduction of need for landfills

•Reduction of junks and clutters

•Resale and Reuse

•Creation of jobs

CONCLUSION

1. As far as e-waste is concerned, it has emerged as one of the fastest growing waste streams world

wide today.

2. Electronic equipment is one of the largest know sources of heavy metals without effective

collection, reuse, and recycling systems, they will be dangerous to environment

3. Reuse and recycling of electronic equipment is a beneficial alternative than disposal

4. Product design by using safe and environment friendly raw materials and most emerging

technologies

THANK YOU