کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7233998 | 1470981 | 2013 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Biotic and abiotic characterization of bioanodes formed on oxidized carbon electrodes as a basis to predict their performance
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کلمات کلیدی
CoDsΔEpRCTEAACPEPZCOCPBioanodeANCOVASSAMFCBESMECCoulombic efficiency - بازده کولومیکElectroactive biofilm - بیوفیلم الکتریکیanalysis of covariance - تجزیه و تحلیل کوواریانسanalysis of variance - تحلیل واریانسANOVA - تحلیل واریانس Analysis of variancecurrent - جاریvolatile solids - جامدات فرارSpecific surface area - سطح خاصCoefficient of Variation - ضریب تغییرCapacitance - ظرفیت خازنیconstant phase element - عنصر فاز ثابتsoluble chemical oxygen demand - محلول شیمیایی اکسیژن مورد نیاز استElectrode characterization - مشخصه الکترودهاResistance - مقاومتCharge transfer resistance - مقاومت انتقال شارژOhmic resistance - مقاومت اویمیکاpoint of zero charge - نقطه صفر شارژCyclic voltammetry - ولتامتری چرخهای%CV - ٪رزومهOpen circuit potential - پتانسیل مدار باز
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Bioelectrochemical systems (BESs) are based on the catalytic activity of biofilm on electrodes, or the so-called bioelectrodes, to produce electricity and other valuable products. In order to increase bioanode performance, diverse electrode materials and modification methods have been implemented; however, the factors directly affecting performance are yet unclear. In this work carbon cloth electrodes were modified by thermal, chemical, and electrochemical oxidation to enhance oxygenated surface groups, to modify the electrode texture, and consequently the electron transfer rate and biofilm adhesion. The oxidized electrodes were physically, chemically, and electrochemically characterized, then bioanodes were formed at +0.1 V vs. Ag/AgCl using domestic wastewater amended with acetate. The bioanode performance was evaluated according to the current and charge generated. The efficacy of the treatments were in the order Thermal>Electrochemical>Untreated>Chemical oxidation. The maximum current observed with untreated electrode was 0.152±0.026 mA (380±92 mA mâ2), and it was increased by 78% and 28% with thermal and electrochemical oxidized electrodes, respectively. Moreover, the volatile solids correlated significantly with the maximum current obtained, and the electrode texture was revealed as a critical factor for increasing the bioanode performance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biosensors and Bioelectronics - Volume 50, 15 December 2013, Pages 373-381
Journal: Biosensors and Bioelectronics - Volume 50, 15 December 2013, Pages 373-381
نویسندگان
Bibiana Cercado, Luis Felipe Cházaro-Ruiz, Vianey Ruiz, Israel de Jesús López-Prieto, Germán Buitrón, ElÃas Razo-Flores,