کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10154695 | 1666311 | 2018 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Recoverability of electrical conductivity of a Geobacter-enriched biofilm
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The electrical conductivity of a Geobacter-enriched biofilm anode fed with acetate medium was assessed using small gold electrode systems as substrate concentration was changed. At 1.86 A/m2 of the steady-state current density, biofilm conductivity was stable at 0.48-0.51â¯mS/cm. This high biofilm conductivity was not changed at short-term starvation (< 7â¯h). In comparison, biofilm conductivity significantly decreased down to 0.16â¯Â±â¯0.002â¯mS/cm after 4â¯d of long-term starvation (current density 0.03â¯Â±â¯0.01 A/m2). Biofilm conductivity, however, was recovered to 0.35â¯Â±â¯0.03â¯mS/cm after 25â¯mM acetate spiking in a few days. The decrease and increase of biofilm conductivity in response to substrate conditions for long-term starvation was consistently observed in three consecutive cycles. This dynamic biofilm conductivity indirectly indicates that catabolism of exoelectrogens (i.e., energy generation) is associated with biofilm conductivity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 402, 31 October 2018, Pages 198-202
Journal: Journal of Power Sources - Volume 402, 31 October 2018, Pages 198-202
نویسندگان
Bipro Ranjan Dhar, Hao Ren, Junseok Chae, Hyung-Sool Lee,