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首页> 外文期刊>International journal of green energy >Experimental study on microalgae cultivation in novel photobioreactor of concentric double tubes with aeration pores along tube length direction
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Experimental study on microalgae cultivation in novel photobioreactor of concentric double tubes with aeration pores along tube length direction

机译：新型同心双管曝气孔沿管长度方向新型光生物反应器中微藻培养的实验研究。

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摘要

Microalgae have been identified as a superior feedstock for biodiesel production and varied tubular photobioreactors are developed for high efficient and scale-up microalgae cultivation. This article presented a novel concentric double tubes using aeration through radial pores along the length direction of inner tube. Experiments on microalgae cultivation were carried out in the novel photobioreactor, and two control groups including concentric double tubes with axial aeration at both ends and common tubular. The biomass productivity of novel photobioreactor increased by 43.6% and 107.4%, respectively, compared with concentric double tubes with axial aeration at both ends and common tubular without aeration. The values of pH shifted from 7.5 to 9.0 for novel photobioreactor, but 7.5 to 8.8 for common tubular, and 7.5 to 9.6 for concentric double tubes with axial aeration. The dissolved oxygen concentration fluctuated between 6.0 and 7.0mgL(-1) for novel photobioreactor, but rose from 6.6 to 10.2mgL(-1) for the common tubular, and 6.9 to 8.1mgL(-1) for the concentric with axial aeration. Results show that the aeration style of novel photobioreactor can make efficient local mixing and maintain smaller range of pH and lower level of dissolved oxygen in case of higher biomass concentration. Moreover, compared with the two control groups, the novel concentric double tubes have advantages on the light/dark cycle frequency, which may be benefit for microalgae cultivation. The novel concentric double tubes presented in this work can give some inspiration for high efficiency microalgae cultivation.
机译：微藻已被确定为生物柴油生产的上乘原料，并且开发了各种管状的光生物反应器用于高效和规模化的微藻培养。本文介绍了一种新型的同心双管，它利用沿内管长度方向的径向孔通气。在新型光生物反应器和两个对照组中进行了微藻培养实验，两个对照组包括两端带有轴向通气的同心双管和普通管。与两端带有轴向通气的同心双管和不通气的普通管相比，新型光生物反应器的生物质生产率分别提高了43.6％和107.4％。对于新型光生物反应器，pH值从7.5更改为9.0，但对于普通管式则为7.5至8.8，对于带有轴向通气的同心双管则为7.5至9.6。新型光生物反应器的溶解氧浓度在6.0至7.0mgL（-1）之间波动，而普通管的溶解氧浓度从6.6至10.2mgL（-1）上升，而同心带轴向曝气的溶解氧浓度则从6.9至8.1mgL（-1）上升。结果表明，新型光生物反应器的曝气方式可以实现高效的局部混合，并在较高的生物质浓度下保持较小的pH范围和较低的溶解氧水平。此外，与两个对照组相比，新型同心双管在明/暗循环频率上具有优势，这可能有利于微藻培养。在这项工作中提出的新型同心双管可以为高效微藻培养提供一些启发。

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  • 来源
    《International journal of green energy》 |2017年第15期|1269-1276|共8页
  • 作者

    Yang Junhong; Cui Xuyang; Feng Yuanzheng; Jing Guangning; Kang Ligai; Luo Mengyuan;

  • 作者单位

    Tianjin Univ, Sch Mech Engn, Key Lab Efficient Utilizat Low & Medium Grade Ene, MOE, Tianjin 300072, Peoples R China;

    Tianjin Univ, Sch Mech Engn, Key Lab Efficient Utilizat Low & Medium Grade Ene, MOE, Tianjin 300072, Peoples R China;

    Tianjin Univ, Sch Mech Engn, Key Lab Efficient Utilizat Low & Medium Grade Ene, MOE, Tianjin 300072, Peoples R China;

    Tianjin Univ, Sch Mech Engn, Key Lab Efficient Utilizat Low & Medium Grade Ene, MOE, Tianjin 300072, Peoples R China;

    Tianjin Univ, Sch Mech Engn, Key Lab Efficient Utilizat Low & Medium Grade Ene, MOE, Tianjin 300072, Peoples R China;

    Tianjin Univ, Sch Mech Engn, Key Lab Efficient Utilizat Low & Medium Grade Ene, MOE, Tianjin 300072, Peoples R China;

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  • 关键词

    Microalgae cultivation; concentric double tubes; pH shift; dissolved oxygen; light; dark cycle;

    机译：微藻培养;同心双管;pH值变化;溶解氧;光;暗循环;

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