Bioleaching waste printed circuit boards by Acidithiobacillus ferrooxidans and its kinetics aspect

被引：109

作者：

Yang, Yuankun ^{[1
]}

Chen, Shu ^{[1
]}

Li, Shicheng ^{[2
]}

Chen, Mengjun ^{[1
]}

Chen, Haiyan ^{[1
]}

Liu, Bijun ^{[2
]}

机构：

[1] Southwest Univ Sci & Technol, Minist Educ, Key Lab Solid Waste Treatment & Resource Recycle, Mianyang 621010, Peoples R China

[2] China Acad Engn Phys, Inst Nucl Phys & Chem, Mianyang 621900, Peoples R China

来源：

JOURNAL OF BIOTECHNOLOGY | 2014年 / 173卷

关键词：

Bioleaching; Waste printed circuit boards; Metal recovery; Acidithiobacillus ferrooxidans; H+ consumption; ELECTRONIC SCRAP; MIXED CULTURE; RECOVERY; METALS; COPPER; OXIDATION; BACTERIA;

D O I：

10.1016/j.jbiotec.2014.01.008

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

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 15 g/L, Cu (96.8%), Zn (83.8%), and Al (75.4%) were recovered after 72 h 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. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：24 / 30

页数：7

共 32 条

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