In this study, activated biochar prepared using Taihu blue algae was adopted to facilitate cathodic hydrogenotrophic denitrification in bioelectrochemical system (BES). It was found that addition of algal biochar (ABC)-800N (treated with nitric acid) at biocathode reached the highest nitrate removal constant (21.79), while the control reached only 6.94. Besides, activity of nitrous oxide reductase attained 5.16 U/L for the control in day 7, while group ABC-800N reached 16.06 U/L by then. Importantly, chronoamperometry (CA) detect indicated an electron exchange capacity for group ABC-800N as 872.68 μmol e⁻/gBC, compared to 162.81 μmol e⁻/gBC for the control. Through chronocoulomb (CC), better charge/discharge stability can be concluded in BES reactor using ABC-800N. Therefore, activated biochar could be implemented to enhance denitrification process at biocathode in BES.

在这项研究中，采用太湖蓝藻制备的活性生物炭可促进生物电化学系统（BES）中的阴极氢营养性反硝化作用。发现在生物阴极添加藻类生物炭（ABC）-800N（用硝酸处理）达到最高的硝酸盐去除常数（21.79），而对照仅达到6.94。此外，在第7天，作为对照的一氧化二氮还原酶的活性达到5.16U / L，而那时ABC-800N组达到了16.06U / L。重要的是，计时安培（CA）检测用于指示组ABC-800N的电子交换容量为872.68微摩尔ë ^- / GBC，相比162.81微摩尔ë ^-/ gBC作为控件。通过计时库仑（CC），可以在使用ABC-800N的BES反应器中得出更好的充电/放电稳定性。因此，可以实施活化的生物炭来增强BES中生物阴极的反硝化过程。