earth-science-2019-scientifictracks

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OF EXCELLENCE

IN INTERNATIONAL

MEETINGS

YEARS

Journal of EnvironmentalWaste Management and Recycling | Volume 2

Earth Science 2019

May 22-23, 2019 | Rome, Italy

EARTH SCIENCE,

RECYCLING & SPACE TECHNOLOGY

International Conference on

RECOVERING OF GOLD FROMWEEE BY USING FROTH FLOTATION AND LEACHING

G Dodbiba, K Yabui, Y Kim, J Ponou

and

T Fujita

The University of Tokyo, Japan

apan is a major consumer of precious metals. Nevertheless, it imports most of its required amount of pre-

cious metals. In order to ensure a stable supply of precious metals as well as deal with the increasing global

demand, it is important to develop cost effective and environmental-friendly technologies that are able to

recover the precious metals from electronic waste known as e-waste. Generally speaking, the conventional

method for recovering gold (Au) from printed circuit boards involves the incineration of scarp, followed by acid

leaching. In an attempt to improve the Au extraction process, the authors are putting forward a new method.

The sample was first subject to carbonization in N2 atmosphere, followed by flotation in order to reduce the

amount of sample subject to acid leaching as well as reduce the acid consumption. The sample recovered by

flotation was then treated with aqua regia to dissolve Au. After investigating the effect of the carbonization

temperature, a Cost-Benefit Analysis and a Life Cycle Assessment (LCA) were carried out in order to compare

the efficiency of both conventional and suggested methods..

G Dodbiba et al., J Environ Waste Management and Recycling 2019, Volume 2

G Dodbiba obtained his Master degree in 2001 and a Doctor degree in 2004 both in Materials-process Engineering. From 2004 to

March 2006, he was a Postdoctoral Research Fellow and then from 2004 to 2009, he was an Assistant Professor at the Department

of Geosystem Engineering at the University of Tokyo, Japan. Currently, he is an Associate Professor at the Faculty of Engineering, De-

partment of Systems Innovation at The University of Tokyo, Japan. He is author of more than 80 papers in the areas of environmental

impact assessment, physical and chemical processing of materials.

BIOGRAPHY