Evaluating the Distance of Anode Electrode Effects in Sediment by Forced Electron Recovery
Evaluating the Distance of Anode Electrode Effects in Sediment by Forced Electron Recovery
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DOI：
10.2208/kaigan.70.i_1061
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发表时间：
2014
影响因子：
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通讯作者：
Masanori Tachibana;Yoshiyuki Nagatsu;N. Touch;T. Hibino
中科院分区：
文献类型：
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作者：
Masanori Tachibana;Yoshiyuki Nagatsu;N. Touch;T. Hibino
沉积物微生物燃料电池（smfc）因其可再生能源和生物降解技术的高可行性而备受关注。在这里，我们的目的是通过实验评估强迫电子恢复在沉积物中的电极距离效应，基于沉积物性质（pH， ORP）和电极电位的变化。在阳极电极附近，ORP（或电极电位）大幅增加，pH值大幅下降。随着与阳极电极距离的增加，pH、ORP和电极电位形成梯度。从梯度曲线上看，距离阳极电极8cm处的沉积物受到强迫电子恢复的影响。与正常条件下的smfc相比，这一距离增加了10倍。
Sediment microbial fuel cells (SMFCs) have attracted great attention for its high feasibility of renewable energy source and biodegradation technology. Here, we aim to experimentally evaluate the electrode distance effects in sediment by forced electron recovery based on variances in the profiles of sediment properties (pH, ORP) and the electrode potential. Large increases in ORP (or electrode potential) and decreases in pH were found near the anode electrode. The gradients of pH, ORP, and the electrode potential formed along with increases in the distance from the anode electrode. Based on the gradient profiles, the sediment located up to 8 cm from the anode electrode was affected by the forced electron recovery. This distance was 10-fold longer comparing to that of SMFCs operated with normal conditions.