کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7735779 | 1497963 | 2014 | 38 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Metals as electron acceptors in single-chamber microbial fuel cells
ترجمه فارسی عنوان
فلزات به عنوان گیرنده های الکترون در سلول های سوختی یک سلول میکروبی
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
چکیده انگلیسی
Two typical oxidized-status metals (Fe(III) and Cr(VI)) were studied as electron acceptors on cathodes in single chamber microbial fuel cells (SCMFCs) to explore novel sustainable technology for metal treatment. The batch-mode tests indicated that the voltages of SCMFCs steadily increased with Fe(III) concentrations (10, 30, and 50 mg Lâ1) and Cr(VI) concentrations (1, 3, and 10 mg Lâ1). The maximum power density was 658 ± 6 mW mâ2 at 50 mg Lâ1 of Fe(III), and 419 ± 4 mW mâ2 at 10 mg Lâ1 Cr(VI). The conversion efficiency of Cr(VI) and Fe(III) were high (>89%), and coulombic efficiency ranged 23-100%. Cr(VI) concentration of 10 mg Lâ1 started to irreversibly inhibit SCMFCs. The open circuit potentials (OCPs) well reflected the organic substrate removal in anode and metal reduction on cathode. Cathode liner sweep voltammetry (LSV) showed the electrochemical activity increased with metal concentrations, and the cathode of Fe(III) had better LSV performance than Cr(VI). Microbial community analysis of biofilms showed that the DNA band patterns of anode biofilms were similar, while cathode biofilms varied with electron acceptors. This study demonstrated the high power generation of SCMFCs with metals as electron acceptors, and revealed the great potential of expanding MFCs for diverse waste treatment.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 269, 10 December 2014, Pages 430-439
Journal: Journal of Power Sources - Volume 269, 10 December 2014, Pages 430-439
نویسندگان
Yan Li, Yining Wu, Sampada Puranik, Yu Lei, Timothy Vadas, Baikun Li,