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通过H2驱动的CO2生物甲化进行集成的CO2捕获和转化:循环性能和微生物社区响应

Heng Xu¹, Jiahui Miao¹, Jianbing Wang¹

¹School of Chemical & Environmental Engineering, China University of Mining & Technology-Beijing, Beijing 100083, China.

Bioresource technology

|November 23, 2023

概括

这项研究证明了以为驱动的二氧化碳 (CO2) 生物甲化,用于集成的二氧化碳捕获和转化 (iCCC). 这一过程有效地回收碳酸盐,在各种pH值水平上表现稳定,以提高二氧化碳的捕获.

科学领域:

生物技术是生物技术.
环境科学环境科学
微生物学微生物学

背景情况:

二氧化碳 (CO2) 排放带来了重大的环境挑战.
综合二氧化碳捕获和转化 (iCCC) 为减少二氧化碳排放提供了一个有前途的解决方案.
生物甲化为二氧化碳利用提供了一个可持续的途径.

研究的目的:

为了研究iCCC的驱动的CO2生物甲化.
评估二氧化碳吸收和碳酸盐再生的循环性能和稳定性.
为了确定参与该过程的微生物群落.

主要方法:

在H2供应的,Na2CO3修改的介质中丰富无氧微生物群落.
在不同pH值 (9.0,9.5,10.0) 的二氧化碳吸收和再生周期的性能评估.
微生物社区结构和功能的分析.

主要成果:

通过生物甲化成功捕获二氧化碳并将其转化为甲.
在多个循环中有效恢复二氧化碳吸收能力和稳定的碳酸盐回收.
pH=10.0组表现出最高的二氧化碳吸收能力 (65.3 mmol/L在第五个周期).
主要存在耐性微生物群落,在不同的pH条件下促进CO2生物甲化.

结论:

用驱动的CO2生物甲化是iCCC的一个可行的策略.
该工艺表现出稳定的循环性能和高效的碳酸盐回收利用.
耐的微生物在这种iCCC方法的成功中起着至关重要的作用.

关键词:

吸收的二氧化碳.转换过程中的二氧化碳 (CO2) 转换.碳酸盐的回收利用甲基生物生成 (Methanogenesis) 是一个过程.再生再生再生的过程

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