کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1280523 1497688 2006 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Monitoring bioactivity in hydrogen fermentation by an amperometric method with polyviologen modified working electrode
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Monitoring bioactivity in hydrogen fermentation by an amperometric method with polyviologen modified working electrode
چکیده انگلیسی

To monitor the bioactivity change of a hydrogen fermentor, this work presents a novel bioelectrochemical method equipped with a polyviologen modified glassy carbon as a working electrode and with ferricyanide as an electron mediator. Experimental results demonstrated that the ferricyanide can transfer electrons from hydrogen producing bacteria cells to electrode without significant inhibition on cell growth. To protect the electrode from fouling by protein and bacteria during bioassay, polyviologen film was applied to modify the working electrode, and stabilized the responding current compared to the use of bare electrode. The amperometric bioassay provided the bioactivity information for indicating the statue of the fermentor and helping draw up the operation strategy when the fermentor was operated under abnormal conditions, including stop-feeding and re-feeding. The results of bioactivity monitoring suggested an interesting phenomenon that the activity of hydrogen producing bacteria transiently increased during the unsteady period and then decreased.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 31, Issue 10, August 2006, Pages 1357–1364
نویسندگان
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