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Journal of Clinical and Experimental Toxicology | Volume: 2
December 03-04, 2018 | Dubai, UAE
International Conference on
6
th
International Conference on
Toxicology, Clinical Toxicology & Pharmacology
Recycling & Waste Management
Joint Event
&
Urban mining of precious metals and copper from mobile motherboards: Recovery studies
K Pavan Kumar Reddy
2
, Kushal Gaddam
1
, Vamshi Chirtha
1
, Akhil V
1
, MRP Reddy
1
, Rajesh Kumar
1
and
K Srinivasa Vadayar
2
1
Centre for Materials for Electronics Technology, India
2
JNTUH College of Engineering, India
G
lobalization of information and communication has not
only revolutionized our lives, economies and industries
but also led to hazardous wastes generated from electronics. E
waste or Electronic waste is a term for electrical and electronic
equipment’s that have become discarded or obsolete. Almost
all E waste contains some or other form of recyclable material
including plastic, glass and metal. The need of recycling the e
waste is increasing day by day with the increase in production
of electronic devices and discarding them after usage. The
economics of E-waste recycling lieswith the recoveryof precious
metals. A mobile mother board contains many valuable metals
like gold, silver, palladium and copper. Recovery of precious
metals and valuable metals is a big challenge as it also contains
hazardous substances such as cadmium, bromine, mercury,
dioxins, furans etc.
Thermo Gravimetric Analysis (TGA) has performed to study the
thermal degradation characteristics of Mobile Mother Board
(MMB). MMBs were calcined at 8000
0
C about two hours in a
gas fired furnace for complete combustion of MMB. The flue
gases were treated at 1200°C for removing the organic toxins
using a gas cleaning system.
Calcined MMBs are made into fine powder and elemental
analysis made for the MMBs. Based on the composition
of the elements present in MMBs different types of fluxes
were added with different composition to concentrate the
precious elements in Black copper during smelting process at
temperature of 13000
o
C where the gangue can be separated
as slag. The chemical composition of the smelted copper is
presented and discussed. This study reveals that mobilemother
boards are rich source of copper and precious metals.
Speaker Biography
K Pavan Kumar Reddy has completed his bachelor degree in Mechanical Engineering at
the age of 21 years from JNTU Hyderabad University, INDIA. He is pursuing his masters in
MetallurgicalEngineeringinJNTUHyderabadUniversity.HehasparticipatedinInternational
conference on Semiconductors and workshop on E waste Management organized by
C-MET Hyderabad. He has given oral presentation in All INDIA seminar on “Advances in
Metallurgy and Manufacturing Process” organized by The Institute of Engineers – INDIA.
e:
pavan.2111kumar@gmail.comK Pavan Kumar Reddy et al.
, Toxicology 2018 & Recycling 2018, Volume 2
DOI: 10.4066/2630-4570-C1-002