Evidence of cell surface iron speciation of acidophilic iron-oxidizing microorganisms in indirect bioleaching process
文献类型：期刊论文
| 作者 | Nie, ZY; Liu, HC; Xia, JL; Yang, Y; Zhen, XJ; Zhang, LJ; Qiu, GZ |
| 刊名 | BIOMETALS
 |
| 出版日期 | 2016 |
| 卷号 | 29期号:1页码:25—37 |
| 关键词 | EXTRACELLULAR POLYMERIC SUBSTANCES RAY-ABSORPTION-SPECTROSCOPY NEAR-EDGE SPECTRA ACIDITHIOBACILLUS-FERROOXIDANS SULFOBACILLUS-THERMOSULFIDOOXIDANS DIFFERENTIAL UTILIZATION SULFUR CHALCOPYRITE MECHANISMS BACTERIA |
| ISSN号 | 0966-0844 |
| 通讯作者 | Xia, JL (reprint author), Cent S Univ, Sch Minerals Proc & Bioengn, Changsha 410083, Hunan, Peoples R China. ; Xia, JL (reprint author), Cent S Univ, Key Lab Biomet, Minist Educ China, Changsha 410083, Hunan, Peoples R China. |
| 英文摘要 | While indirect model has been widely accepted in bioleaching, but the evidence of cell surface iron speciation has not been reported. In the present work the iron speciation on the cell surfaces of four typically acidophilic iron-oxidizing microorganism (mesophilic Acidithiobacillus ferrooxidans ATCC 23270, moderately thermophilic Leptospirillum ferriphilum YSK and Sulfobacillus thermosulfidooxidans St, and extremely thermophilic Acidianus manzaensis YN25) grown on different energy substrates (chalcopyrite, pyrite, ferrous sulfate and elemental sulfur (S-0)) were studied in situ firstly by using synchrotron-based micro- X-ray fluorescence analysis and X-ray absorption near-edge structure spectroscopy. Results showed that the cells grown on iron-containing substrates had apparently higher surface iron content than the cells grown on S-0. Both ferrous iron and ferric iron were detected on the cell surface of all tested AIOMs, and the Fe(II)/Fe(III) ratios of the same microorganism were affected by different energy substrates. The iron distribution and bonding state of single cell of A. manzaensis were then studied in situ by scanning transmission soft X-ray microscopy based on dual-energy contrast analysis and stack analysis. Results showed that the iron species distributed evenly on the cell surface and bonded with amino, carboxyl and hydroxyl groups. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000369309400003 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/25719]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 推荐引用方式 GB/T 7714 | Nie, ZY,Liu, HC,Xia, JL,et al. Evidence of cell surface iron speciation of acidophilic iron-oxidizing microorganisms in indirect bioleaching process[J]. BIOMETALS,2016,29(1):25—37. |
| APA | Nie, ZY.,Liu, HC.,Xia, JL.,Yang, Y.,Zhen, XJ.,...&Qiu, GZ.(2016).Evidence of cell surface iron speciation of acidophilic iron-oxidizing microorganisms in indirect bioleaching process.BIOMETALS,29(1),25—37. |
| MLA | Nie, ZY,et al."Evidence of cell surface iron speciation of acidophilic iron-oxidizing microorganisms in indirect bioleaching process".BIOMETALS 29.1(2016):25—37. |
入库方式： OAI收割
来源：上海应用物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。