利用溶解的CO2控制甲和酸盐生产在甲化反应堆中的利用
F Paillet1, E Crestey1, G Gaval1
1SUEZ Groupe, CIRSEE, 38 rue du Président Wilson, 78 230 Le Pecq, France.
Bioresource technology
|November 3, 2024
概括
在甲化生物反应器中操纵溶解的二氧化碳 (CO2) 会影响代谢途径. 较高的CO2水平有利于甲 (CH4) 生产,而较低的水平有利于酸盐生产.
科学领域:
- 生物技术和生物化学工程 生物技术和生物化学工程
- 微生物代谢和合成生物学
背景情况:
- 甲化生物反应器将二氧化碳 (CO2) 和 (H2) 转化为甲 (CH4).
- 控制代谢途径对于优化CH4和酸盐等有价值产品的生产至关重要.
研究的目的:
- 研究溶解CO2度如何影响甲化膜生物反应器中的代谢途径选择.
- 确定最佳的溶解CO2水平,以最大限度地提高CH4和酸盐的生产.
主要方法:
- 使用一种甲化膜生物反应器,供应不同比例的H2/CO2 (3.3到5.0v/v).
- 在反应堆介质中操纵溶解的CO2度.
- 在不同的CO2条件下量化了CH4和酸盐的生产.
主要成果:
- 溶解的CO2度与CH4产量正相关.
- 在超过2.0 ± 0.2 mmol/L的溶解CO2度下,CH4的产生更受青.
- 在较低的溶解CO2度下,乙酸盐生产得到了青,最高度为1.9 g/L,溶解CO2度为0.9 mmol/L.
结论:
- 调节溶解的CO2水平提供了一种选择特定代谢途径和微生物群落的策略.
- 这种方法可以优化CO2转化为有价值的产品,如CH4和酸盐.
- 为提高生产标化合物的生物反应器效率提供了一条途径.
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