In this work, two commercialized anion-exchange membranes (AEMs), AMI-7001 and AF49R27, were applied in microbial electrolysis cells (MECs) and compared with a novel AEM (PSEBS CM DBC, functionalized with 1,4-diazabicyclo[2.2.2]octane) to produce biohydrogen. The evaluation regarding the effect of using different AEMs was carried out using simple (acetate) and complex (mixture of acetate, butyrate and propionate to mimic dark fermentation effluent) substrates. The MECs equipped with various AEMs were assessed based on their electrochemical efficiencies, H2 generation capacities and the composition of anodic biofilm communities. pH imbalances, ionic losses and cathodic overpotentials were taken into consideration together with changes to substantial AEM properties (particularly ion-exchange capacity, ionic conductivity, area- and specific resistances) before and after AEMs were applied in the process to describe their potential impact on the behavior of MECs. It was concluded that the MECs which employed the PSEBS CM DBC membrane provided the highest H2 yield and lowest internal losses compared to the two other separators. Therefore, it has the potential to improve MECs.

中文翻译：

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季铵盐和1,4-二氮杂双环[2.2.2]辛烷官能化的阴离子交换膜在微生物电解池中生产生物氢的可行性。

在这项工作中，将两种商品化的阴离子交换膜（AEM）AMI-7001和AF49R27应用于微生物电解池（MEC），并与一种新型的AEM（PSEBS CM DBC，经1,4-二氮杂双环[2.2]功能化）进行了比较。 2]辛烷）生产生物氢。关于使用不同AEM的效果的评估是使用简单的（乙酸盐）和复杂的（乙酸盐，丁酸盐和丙酸盐的混合物来模拟深色发酵废水）进行的。基于其电化学效率，H2产生能力和阳极生物膜群落组成，对配备了各种AEM的MEC进行了评估。考虑到pH失衡，离子损失和阴极超电势以及对基本AEM特性（尤其是离子交换容量，离子电导率，在此过程中应用AEM之前和之后的电阻率和电阻率，以描述它们对MEC行为的潜在影响。结论是，与其他两个分离器相比，采用PSEBS CM DBC膜的MEC提供最高的H2收率和最低的内部损失。因此，它具有改进MEC的潜力。