阴极氧还原产电生物可渗透反应栅的研究Ⅰ.不锈钢毛电极模拟反应器

Study on cathodic oxygen reduction electricigenic permeable reactive barrier:Ⅰ.The simulated reactor using stainless steel fibers as electrode material

提出利用阴极氧还原和阳极微生物产电作用的产电生物可渗透反应栅(CORE-PRB)方法用于被有机物污染的地下水的修复,并以不锈钢毛为电极建立模拟反应装置验证了CORE-PRB的技术概念。实验中考察了分别以蔗糖+醋酸盐和不同浓度的污泥消化液为进水时的反应电流,并研究电极距离对反应电流的影响。由于氧还原阴极阳极反应能力的限制,随着与阴极室距离加大,模拟反应装置各阳极室的电流迅速减小。有机基质的可生化性对模拟反应器的总电流也有显著影响。

A cathodic oxygen reduction electricigenic permeable reactive barrier（CORE-PRB） was advanced for remediation of groundwater polluted by organics.The article verified the CORE-PRB concept by a simulated reactor that used stainless steel fibers as the electrode material.The currents were monitored respectively using sucrose-acetate water and digested slurry water as the feedings.The effects of the electrode distance were also studied.Since the limitation of the cathodic reduction ability,the currents decreased remarkably with the electrode distance.The bio-degradability of the substrate also had influence on the currents.