Write a short note on electronic waste. List the various sources of e-wastes and the problems associated with its disposal. 

Explanation

Discarded unusable electronic gadgets such as computers, mobile phones, circuits, television sets, etc., form electronic waste.
Electronic waste from equipment of all sizes includes dangerous chemicals like lead, cadmium, beryllium, mercury and brominated flame retardants.
When we dispose of gadgets and devices improperly, these hazardous materials have a high risk of polluting the air, contaminating soil and leaching into water sources.
When e-waste sits in a typical landfill, for example, water flows through the landfill and picks up trace elements from these dangerous minerals.
Eventually the contaminated landfill water, called .leachate,. gets through layers of natural and manufactured landfill liner and other protection.
When it reaches natural groundwater, it introduces lethal toxicity.
Health risks range from kidney disease and brain damage to genetic mutations.