کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
683269 888998 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enhanced performance of air-cathode two-chamber microbial fuel cells with high-pH anode and low-pH cathode
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Enhanced performance of air-cathode two-chamber microbial fuel cells with high-pH anode and low-pH cathode
چکیده انگلیسی

In the course of microbial fuel cell (MFC) operation, the acidification of the anode and the alkalization of the cathode inevitably occur, resulting in reduction of the overall performance. In an attempt to reverse the membrane pH gradient, a tubular air-cathode two-chamber MFC was developed that allowed pH adjustment in both compartments. With an anodic pH of 10.0 and a cathodic pH of 2.0, the tubular MFC provided an open circuit voltage of 1.04 V and a maximum power density of 29.9 W/m3, which were respectively 1.5 and 3.8 times higher than those obtained in the same MFC working at neutral pH. Particularly, the suppression of methanogenesis at high alkaline anode (pH 10.0) contributed to a significant enhancement in coulombic efficiency. The MFC maintained 74% of its performance after 15 days of operation in continuous-flow mode. The appropriate pH adjustment strategy in both compartments ensures a promising improvement in MFC performance.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 101, Issue 10, May 2010, Pages 3514–3519
نویسندگان
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