| Literature DB >> 24445171 |
Yuankun Yang1, Shu Chen2, Shicheng Li3, Mengjun Chen1, Haiyan Chen1, Bijun Liu3.
Abstract
In this paper, H(+) consumption and metal recovery, during the process of bioleaching waste printed circuit boards (WPCBs) by Acidithiobacillus ferrooxidans (A. ferrooxidans), were discussed in detail. When the WPCBs concentration was 15g/L, Cu (96.8%), Zn (83.8%), and Al (75.4%) were recovered after 72h by A. ferrooxidans. Experimental results indicated that metal recovery rate was significantly influenced by acid. Based on experimental results, the kinetics of the H(+) consumption and metal recovery on bioleaching WPCBs were represented by reaction kinetic equations. The kinetic of H(+) consumption could be described by the second-order kinetic model. The metal recovery belongs to the second-order model with adding acid, which was changed to the shrinking core model with precipitate production.Entities:
Keywords: Acidithiobacillus ferrooxidans; Bioleaching; H(+) consumption; Metal recovery; Waste printed circuit boards
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Year: 2014 PMID： 24445171 DOI： 10.1016/j.jbiotec.2014.01.008
Source DB: PubMed Journal: J Biotechnol ISSN： 0168-1656 Impact factor: 3.307