Cadmium in circuit boards; lead oxide and Cadmium in monitor
Cathode Ray Tubes (CRTs); Mercury in switches and flat
screen monitors; Cadmium in computer batteries;
polychlorinated biphenyls (PCBs) in older capacitors and
transformers; and brominated flame retardants on printed circuit
boards, plastic casings, cables and polyvinyl chloride (PVC)
cable insulation that releases highly toxic dioxins and furans
when burned to retrieve Copper from the wires.All electronic
equipments contain printed circuit boards which are hazardous
because of their content of lead (in solder), brominated flame
retardants (typically 5-10 % by weight) and antimony oxide,
which is also present as a flame retardant (typically 1- 2% by
weight).8
Nickel (Ni) which is present in E-waste causes skin damage,asthma, lung damage and carcinogen. It enters in environment
throgh air. Antimony (Sb) causes skin irritation, hair loss, lung
and heart damages and fertility problems. This element is better
absorbed in soil containing steel,magnesium or aluminium.Poly
brominated diphenyl ethers(PBDE) causes anemia damages
skin,liver,stomach and thyroid, contamiante water and
contaminate chain of production of some food. Tetra bromo bis
phenol A(TBBPA) has some mutations and carcinogen effects.
It causes damages to endocrine system. Poly
brominatedbiphenyls (PBB) passes along with food chain
damages kidneys liver and thyroid. Chliroflorocarbon (CFC)
destroys ozone layer. Polyvinyl chloride (PVC) damages animal
kidney and soluble in water and Arsenic is carcinogenic causes
skin and lung cancer. Barium causes gastrointestinal disorder
and muscle weakness, changes heart beat rate, paralysis and
accumuate in aquatic system. Beryllium inhilation causes
pneumonia, respiratory infllimation, lung cancer. Cadmium and
Mercury are carcinogenic and causes lung damage. Therefore, a
treatment technology needs to be developed for clean up of ewaste
from the environment (table-1).