کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
213528 | 462107 | 2006 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Intracellular recovery of gold by microbial reduction of AuCl4− ions using the anaerobic bacterium Shewanella algae
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Intracellular recovery of gold by microbial reduction of AuCl4− ions using the anaerobic bacterium Shewanella algae Intracellular recovery of gold by microbial reduction of AuCl4− ions using the anaerobic bacterium Shewanella algae](/preview/png/213528.png)
چکیده انگلیسی
Microbial reduction and intracellular precipitation of gold was achieved at 25 °C and pH 7 by using the mesophilic anaerobic bacterium Shewanella algae with H2 as the electron donor. The reductive precipitation of gold by S. algae was a fast process: 0.1–1 mol/m3 AuCl4− ions were completely reduced to insoluble gold within 30 min. The biogenic precipitates were crystalline gold nanoparticles of 10–20 nm present in the periplasmic space. The reducing power of S. algae at 3.2 × 1015 cells/m3 and 25 °C was comparable to that of aqueous citric acid solution (chemical reductant) at 20 mol/m3 and 50 °C. The intracellular recovery of gold is potentially attractive as an environmentally friendly alternative to conventional methods.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Hydrometallurgy - Volume 81, Issue 1, January 2006, Pages 24–29
Journal: Hydrometallurgy - Volume 81, Issue 1, January 2006, Pages 24–29
نویسندگان
Yasuhiro Konishi, Takeshi Tsukiyama, Kaori Ohno, Norizoh Saitoh, Toshiyuki Nomura, Shinsuke Nagamine,