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加强H₂气体-液体质量转移,使用超空恐性阴极,在H₂介导的微生物电合成系统中,从CO₂增强甲生产

Jia-Yao Gao¹, Wen-Fang Cai², Ji-Rui Bai¹

¹Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China.

Bioresource technology

|November 21, 2024

概括

超空恐惧阴极通过减少气泡大小,改善气体转移,并促进从CO2中产生甲来增强介导微生物电合成 (MES). 这种方法显著提高了MES反应堆的效率.

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:

通过介导的微生物电合成 (MES) 提供了高电流密度的潜力,但受到低 (H2) 溶解度的限制.
减少H2气泡大小可以改善气液质量转移,这是超空恐电极的已知好处.

研究的目的:

为了提高二氧化碳的甲 (CH4) 产量,在H2介导的MES反应堆中.
研究一种超空气恐惧性阴极在改善H2质量转移方面的有效性.

主要方法:

一种化物 (CoP) 纳米线改性泡 (CoP-NiF) 被用作超空气恐惧阴极.
在H2介导的MES反应堆中使用了CoP-NiF阴极,以促进CO2转化为CH4.
测量了H2气泡大小和质量转移系数.

主要成果:

CoP纳米线修改将H2气泡的平均直径从300μm降低到100μm.
2质量转移系数 (KLa) 增加了129% (0.32分−1).
在166.67A/m2电流密度下,最大CH4生产率提高了27% (2.31L/L/d),库伦比效率高于80%.

结论:

超空恐惧阴极有效地增强MES反应堆中的H2气液质量转移.
这种方法显著提高了甲生产率和库伦比克效率.
使用CoP-NiF作为超空恐阴极是改善H2介导MES性能的一个有希望的策略.

关键词:

转换过程中的二氧化碳 (CO2) 转换.的化物的化物微型的气泡是一个微型的气泡.微生物电化学微生物电化学超高空恐惧电极超高空恐惧电极

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