优化海水中和的环境,其中碳酸的度很高,以实现高效的生长和克洛雷拉sp的自我花收获
Xiang Du1, Chenba Zhu2, Zhanyou Chi1
1MOE Key Laboratory of Bio-Intelligent Manufacturing, School of Bioengineering, Dalian University of Technology, Dalian 116024, China.
Bioresource technology
|April 23, 2025
概括
优化海水中和的度可以增强微藻的生长和自我花,从而提高收获效率. 这种方法可以提高生物质的生产率,同时防止光生物反应器因碳酸沉而受到污染.
科学领域:
- 海洋生物技术 海洋生物技术
- 生物化学工程 生物化学工程
- 环境科学 环境科学
背景情况:
- 海水中高度的二碳酸盐在微藻种植期间会提高pH值,导致碳酸 (CaCO3) 沉.
- 这种降水污染了光生物反应器,降低了生物质的生产率,并阻碍了有效的收获.
- 控制 (Ca2+) 和 (Mg2+) 离子度对于无阻碍的微藻生长和随后的花至关重要.
研究的目的:
- 为了优化Ca2+和Mg2+度,在海水中培养微藻.
- 在没有CaCO3沉的情况下实现高生物质生产率.
- 为了使微藻收获有效的自我花.
主要方法:
- 优化的Ca2+度范围在0.51.0毫摩尔L-1和Mg2+在2.55.0毫摩尔L-1.0之间.
- 通过调整培养后的pH值为11来诱导自我花.
- 在浮动光生物反应器中使用经过处理的海水进行了户外培养实验.
主要成果:
- 通过优化离子度和pH调整,实现了>90%的自我花效率.
- 户外种植的生产率为9.36 g m−2 day−1,与未经处理的海水相比增加了112% (4.42 g m−2 day−1).
- 证明了成功的微藻种植,提高了生产力和高效的收获,没有降水.
结论:
- 优化的Ca2+和Mg2+度促进了微藻的快速生长,并防止了CaCO3的沉.
- 开发的方法确保了高效的自我花和收获.
- 微藻诱导的降水为碳封存提供了潜在的途径,有助于海洋负碳排放.
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