Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/140001
Title: BIOLEACHING OF ELECTRONIC WASTE AND BIOMINERALIZATION OF GOLD NANOPARTICLES
Authors: SUBHABRATA DAS
ORCID iD:   orcid.org/0000-0002-6072-193X
Keywords: E-waste, Bioleaching, Gold recovery, Biomineralization, Gold nanoparticles, Cyanide lixiviant
Issue Date: 25-Aug-2017
Citation: SUBHABRATA DAS (2017-08-25). BIOLEACHING OF ELECTRONIC WASTE AND BIOMINERALIZATION OF GOLD NANOPARTICLES. ScholarBank@NUS Repository.
Abstract: Recent advancements in electronics sector have resulted in an exponential increase in the production of electronic waste. Effective recycling of E-waste to avoid its detrimental environmental effect and to retrieve the available precious metals is a major challenge of the modern world. Compared to conventional methods for metal recovery, bioleaching is a low cost, eco-friendly, safe and less energy intensive process. Biogenic cyanide lixiviant produced by cyanogenic bacteria as secondary metabolite can mobilize gold from ESM. On the other hand, metal nanoparticles prepared using biological methods have gained importance in the recent years, as they are biocompatible, and less toxic in nature. Gold nanoparticles have gained attention for its distinct dimensions, adjustable surface functionalities, non-toxicity and regulated drug release capability. The primary objective of this study is to explore an effective, sustainable and eco-friendly recycling strategy of E-waste by enhanced gold bioleaching from E-waste at first, followed by gold biomineralization.
URI: http://scholarbank.nus.edu.sg/handle/10635/140001
Appears in Collections:Ph.D Theses (Open)

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