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来自城市绿色废物的富含的生物炭电极用于生物电化学系统中的微生物CO2电还原

Khair Un Nisa¹, Beatrice Ricciardi¹, Williane da Silva Freitas¹

¹Department of Chemical Science and Technologies, University of Rome Tor Vergata, Via Della Ricerca Scientifica 1, 00133 Rome, Italy.

Bioresource technology

|March 12, 2026

概括

来自城市绿色废物的富含的生物炭增强了微生物电合成 (MES) 以实现高效的碳循环利用. 这种可持续的阴极材料可以提高二氧化碳的电减量,为循环碳利用提供了一个有前途的解决方案.

科学领域:

电化学电化学电化学
生物技术是生物技术.
材料科学材料科学材料科学

背景情况:

生物电化学系统 (BES) 通过微生物电合成 (MES) 提供可持续的碳回收,用于二氧化碳的电减.
在BES的性能限制包括缓慢的正极反应和昂贵的电极.
富含的生物炭为增强电极活动提供了一个低成本,导电性,多孔的替代品.

研究的目的:

选生物质前体用于MES的生物炭电极生产.
为了优化生物炭合成以提高含量和多孔性.
评估富含的生物炭作为二氧化碳电解电极材料在MES中的性能.

主要方法:

选子 (低N) 和城市绿色废物 (高N) 用于生物炭生产.
热解和激活 (KOH,CO2) 的优化,以最大限度地提高含量和表面积.
使用物理化学和电化学分析进行表征;在MES细胞中进行性能测试.

主要成果:

城市绿色废物 (UGW) 产生了高质量的生物炭,含量高达2.90%的和450-613 m2g-1的多孔性.
来自UGW的生物炭显示出氧气减少,进化和二氧化碳电还原的高活性.
使用UGW生物炭阴极的MES电池实现了更高的电流密度 (~0.20 mA cm-2) 和增强的CO2固定.

结论:

来自UGW的富含的生物炭是BES的成本有效的阴极材料.
优化的UGW生物炭增强了MES中的二氧化碳电减和微生物活动.
这种方法支持高效的碳回收和循环经济原则.

关键词:

生物电化学系统生物电化学系统二氧化碳 (CO2) 的电还原.工程生物炭电极,废物到资源的价值化.微生物的电合成.可持续的生物质转换是一种可持续的生物质转换.

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