Metal Recovery from Electronic Waste: Biological Versus Chemical Leaching for Recovery of Copper and Gold Contributor(s): Işildar, Arda (Author) |
|
ISBN: 0367087057 ISBN-13: 9780367087050 Publisher: CRC Press OUR PRICE: $109.25 Product Type: Paperback - Other Formats Published: November 2018 |
Additional Information |
BISAC Categories: - Science | Environmental Science (see Also Chemistry - Environmental) - Technology & Engineering | Environmental - Water Supply - Technology & Engineering | Civil - General |
Series: Ihe Delft PhD Thesis |
Physical Information: 0.6" H x 6.7" W x 9.4" (0.95 lbs) 250 pages |
Descriptions, Reviews, Etc. |
Publisher Description: Waste electrical and electronic equipment (WEEE) generation is a global problem. Despite the growing awareness and deterring legislation, most of the WEEE is disposed improperly, i.e. landfilled or otherwise shipped overseas, and treated in sub-standard conditions. Informal recycling of WEEE has catastrophic effects on humans and the environment. WEEE contains considerable quantities of valuable metals such as base metals, precious metals and rare earth elements (REE). Metal recovery from WEEE is conventionally carried out by pyrometallurgical and hydrometallurgical methods. In this PhD research, novel metal recovery technologies from WEEE are investigated. Using acidophilic and cyanide-generating bacteria, copper and gold were removed from crushed electronic waste with removal efficiencies of 98.4 and 44.0%, respectively. The leached metals in solution were recovered using sulfidic precipitation and electrowinning separation techniques. Finally, a techno-economic assessment of the technology was studied. This research addresses the knowledge gap on two metal extraction approaches, namely chemical and biological, from a secondary source of metals. The essential parameters of the selective metal recovery processes, scale-up potential, techno-economic and sustainability assessment have been studied. |