Bioleaching of metals from spent lithium ion secondary batteries using Acidithiobacillus ferrooxidans
Bioleaching of metals from spent lithium ion secondary batteries using Acidithiobacillus ferrooxidans
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DOI：
10.1016/j.wasman.2007.01.010
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发表时间：
2008-01-01
期刊：
影响因子：
8.1
通讯作者：
Rhee, Young-Ha
中科院分区：
文献类型：
--
作者：
Mishra, Debaraj;Kim, Dong-Jin;Rhee, Young-Ha
在这项调查中，含有LiCoO 2的废旧锂离子二次电池的生物浸出。本研究使用嗜酸嗜化能无机营养细菌Acidithiobacillusferrooxidans，它利用元素硫和亚铁离子作为能源，产生代谢产物，如硫酸和铁离子在浸出介质中进行。这些代谢物有助于溶解废电池中的金属。发现钴的生物溶解比锂快。研究了废电池废弃物生物浸出过程中Fe（II）初始浓度、初始pH值和固液比等因素的影响。较高的Fe（II）浓度显示由于Fe（III）与残留物中的金属的共沉淀而导致溶解减少。较高的固/液比（w/v）也通过由于废物样品中金属浓度的增加而阻止细胞生长来影响金属溶解。进行EDXA绘图以比较钴和锂两者的溶解度，并且从图中清楚地发现缓慢的溶解速率。(c)2007爱思唯尔有限公司保留所有权利。
Bioleaching of spent lithium ion secondary batteries, containing LiCoO2, was attempted in this investigation. The present study was carried out using chemolithotrophic and acidophilic bacteria Acidithiobacillus ferrooxidans, which utilized elemental sulfur and ferrous ion as the energy source to produce metabolites like sulfuric acids and ferric ion in the leaching medium. These metabolites helped dissolve metals from spent batteries. Bio-dissolution of cobalt was found to be faster than lithium. The effect of initial Fe(II) concentration, initial pH and solid/liquid (w/v) ratio during bioleaching of spent battery wastes were studied in detail. Higher Fe(II) concentration showed a decrease in dissolution due co-precipitation of Fe(III) with the metals in the residues. The higher solid/liquid ratio (w/v) also affected the metal dissolution by arresting the cell growth due to increased metal concentration in the waste sample. An EDXA mapping was carried out to compare the solubility of both cobalt and lithium, and the slow dissolution rate was clearly found from the figures. (c) 2007 Elsevier Ltd. All rights reserved.