Surfactant treatment of carbon felt enhances anodic microbial electrocatalysis in bioelectrochemical systems

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• 作者：Kun Guo ; Alex ; er H. Soeriyadi ; Sunil A. Patil ; Antonin Pr茅voteau ; Stefano Freguia ; J. Justin Gooding ; Korneel Rabaey
• 关键词：Cetyltrimethylammonium bromide ; Carbon felt ; Surface modification ; Surfactant ; Biofilm formation ; Bioelectrochemical systems
• 刊名：Electrochemistry Communications
• 出版年：February, 2014
• 年：2014
• 卷：39
• 期：Complete
• 页码：1-4
• 全文大小：1020 K

文摘

This study reports a simple and effective method to make carbon felt surface hydrophilic and positively-charged by means of cetyltrimethylammonium bromide (CTAB) soaking. X-ray photoelectron spectroscopy and cyclic voltammetry indicated that CTAB could form a surfactant layer on carbon felt surface with the polar heads exposing outwardly. In an acetate-fed bioanode, the start-up time of current production and the time to reach stable current output at the CTAB-treated felt anodes were 36.1% and 49.4% shorter than the untreated anodes, respectively. Moreover, the maximum current output with these treated electrodes was 23.8% higher than the untreated counterparts. These results indicate that the CTAB treatment of carbon felt accelerates the anodic biofilm formation and enhances current output of BESs.