通过金属有机框架增强CO2溶解和无机碳转化,可以改善微藻生长和碳固定效率
Yi-Wen Yang1, Ming-Jia Li2, Tzu-Chen Hung3
1Key Laboratory of Thermo-Fluid Science and Engineering of Ministry of Education, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China.
Bioresource technology
|July 15, 2024
概括
基于/铁的金属有机框架 (MOFs) 通过提高二氧化碳溶解度来增强微藻碳固定. 这一策略提高了生物质生产率和二氧化碳固定效率在Scenedesmus obliquus文化.
科学领域:
- 生物技术是生物技术.
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
背景情况:
- 传统的碳补充方法面临实际的局限性.
- 低二氧化碳在水溶液中的溶解度阻碍了微藻的生长和碳固定.
- 开发高效的碳捕获和利用 (CCU) 战略对于减缓气候变化至关重要.
研究的目的:
- 研究基于/铁的金属有机框架 (MOF) 在提高二氧化碳 (CO2) 溶解度和微藻光合作用效率方面的有效性.
- 优化MOF的特性和度,以改善二氧化碳的质量转移和微藻的生产力.
- 评估MOF对Scenedesmus obliquus.关键生长参数的影响.
主要方法:
- 合成基于Zn/Fe的MOF与受控的Zn/Fe摩尔比率.
- 将MOF引入微藻培养物 (Scenedesmus obliquus),以提高二氧化碳的可用性.
- 为微藻种植优化MOF度和CO2水平.
- 测量二氧化碳质量转移系数,混合时间,叶绿素含量,生物质生产率和二氧化碳固定效率.
主要成果:
- 基于Zn/Fe的MOF的最大特异性表面积为342.94 m2·g-1,其率为10/1的Zn/Fe.
- 最佳的MOF度为2.5mg·L-1增加了2.6倍的无机碳转化.
- 用MOF修改的介质以1.50%的CO2增强的CO2质量转移系数为9.01 × 10−3 min−1.1.
- 最大叶绿素-a含量,生物质生产率和二氧化碳固定效率分别达到32.57 mg·L-1,0.240 g·L-1·d-1和21.6%.
结论:
- 基于Zn/Fe的MOF对Scenedesmus obliquus是无毒的,并且有效地提高了CO2的可溶性.
- MOFs通过促进二氧化碳的丰富,从而提高微藻的光合作用效率,以促进 рибо-1,5-双酸二氧化碳酶/氧基酶的碳氧化.
- 这种基于MOF的策略为提高微藻CO2固定效率提供了一个有希望的方法,并作为CCU技术的宝贵参考.
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