e-waste ppt

ELECTRONIC WASTE

MANAGEMENT

Prepared by,

Swati. M. Pujar

BSc I Year

R. L. Science College, Belgavi

Contents

Introduction

Disposal wastes

Effects of E-wastes on Environment and

Human Health

Remedial Measures

What happens to the electronic gadgets after disposal?

Disposal of E-waste 1) Landfilling:

2) Incineration A complete combustion process

Effects on Environment and Human Health Landfilled computer wastes - pollute

groundwater.

Acids and sludge by melting computer chips causes acidification of soil.

Mercury, cadmium and lead are the most toxic leachate.

Cadmium - affects kidneys and bones.

Landfills are prone to uncontrolled fires

Incineration of e-wastes - emit toxic fumes and gases

The open air burning of plastics - affects local environment and global air current.

Plastics including PVC when burnt or landfilled release dioxins

Heavy metals not emitted to the atmosphere can re-enter the environment as slag.

What can be done?

Waste Minimization Techniques

1) Inventory Management

Proper control over the materials used in the manufacturing process

Reducing the both quantity of hazardous materials used and the amount of excess

raw materials used.

2) Production-Process Modification Changes can be made in the production

process

Improvements in the operation and maintenance of process equipment

Installing more efficient process equipment or modifying the existing.

3) Volume reduction Remove a hazardous portion of the waste

from a non-hazardous portion.

Segregation of wastes is done by treating the wastes containing different metals separately

Concentration of wastes may increase the likelihood that the material can be recycled or reused.

4) Recovery and reuse

Waste material can be reclaimed by a number of physical and chemical techniques like reverse osmosis, electrolytic recovery, filtration, centrifugation etc.

Thank you