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首页> 外文期刊>Sustainability >Biochar Based Microbial Fuel Cell for Enhanced Wastewater Treatment and Nutrient Recovery
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Biochar Based Microbial Fuel Cell for Enhanced Wastewater Treatment and Nutrient Recovery

机译：基于生物炭的微生物燃料电池，用于增强废水处理和营养回收

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Waste-wood derived biochar was evaluated for the first time as both an anode and cathode material, simultaneously, in an overflow style microbial fuel cell (MFC) using actual industrial wastewater. Results show that the average chemical oxygen demand (COD) removal was 95% with a reduction rate of 0.53 kg·COD·m ?1 ·d ?1 in closed operation mode. The ammonia and phosphorous reductions from wastewater was 73% and 88%, respectively. Stable power production was observed with a peak power density measured at 6 W/m 3 . Preliminary contributions of physical, biological, and electrochemical COD removals were evaluated, and the results show such combined mechanisms give BC an advantage for MFC applications. Nutrient recovery data showed high levels of macronutrients adsorbed onto the spent biochar electrodes, and phosphorus concentration increased from 0.16 g·kg ?1 in raw BC to up to 1.9 g·kg ?1 in the cathode. These findings highlight the use of biochar as electrodes in MFCs to facilitate simultaneous wastewater treatment and power production with additional agronomic benefits.
机译：使用实际的工业废水，在溢流型微生物燃料电池（MFC）中，首次同时评估了废木材衍生的生物炭作为阳极材料和阴极材料的性能。结果表明，在封闭运行模式下，平均化学需氧量（COD）去除率为95％，还原速率为0.53 kg·COD·m？1？d？1。废水中的氨和磷还原量分别为73％和88％。观察到稳定的功率产生，峰值功率密度为6 W / m 3。评估了物理，生物和电化学COD去除的初步贡献，结果表明，这种结合的机理使BC在MFC应用中具有优势。营养物回收数据表明，大量的大量营养素吸附在用过的生物炭电极上，磷浓度从原始BC中的0.16 g·kgβ1增加到阴极中的1.9 g·kgβ1。这些发现突显了在MFC中使用生物炭作为电极，以促进废水的同时处理和发电，并具有更多的农艺优势。

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