کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1288863 973275 2013 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Automatic control of load increases power and efficiency in a microbial fuel cell
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Automatic control of load increases power and efficiency in a microbial fuel cell
چکیده انگلیسی

Increasing power production and coulombic efficiency (CE) of microbial fuel cells (MFCs) is a common research ambition as the viability of the technology depends to some extent on these measures of performance. As MFCs are typically time varying systems, comparative studies of controlled and un-controlled external load impedance are needed to show if control affects the biocatalyst development and hence MFC performance. The application of logic based control of external load resistance is shown to increase the power generated by the MFC, when compared to an equivalent system which has a static resistive load. The controlled MFC generated 1600 ± 400 C, compared to 300 ± 10 C with an otherwise replicate fixed load MFC system. The use of a parsimonious gradient based control was able to increase the CE to within the range of 15.1–22.7%, while the CE for a 200 Ω statically loaded MFC lay in the range 3.3–3.7%. The controlled MFC improves the electrogenic anodic biofilm selection for power production, indicating that greater power and substrate conversion can be achieved by controlling load impedance. Load control ensured sustainable current demand, applied microbial selection pressures and provided near-optimal impedance for power transference, compared to the un-controlled system.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 196, Issue 4, 15 February 2011, Pages 2013–2019
نویسندگان
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