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首页> 外文期刊>Renewable energy >A genset and mini-photobioreactor association for CO_2 capturing, enhanced microalgae growth and multigeneration
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A genset and mini-photobioreactor association for CO_2 capturing, enhanced microalgae growth and multigeneration

机译：发电机组和微型光生物反应器关联，用于捕获CO_2，增强微藻生长和多代繁殖

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摘要

A multigeneration system is proposed to recover waste heat from a genset driven by a diesel engine, and capture CO2 in its emissions for microalgae growth. Scenedesmus sp. and an algae mixture were separately cultivated in 20-L jugs by supplying two CO2 sources: air and diesel engine emissions. Microalgae growth rates were determined from absorbances and analyzed to construe whether emissions in lieu of air enhanced the microalgae growth. Also, a mini-photobioreactor (mPBR) was employed to grow local algae mixture with air and emissions as CO2 sources. The experimental results demonstrated that diesel engine emissions increased the growth of both Scenedesmus sp. and local algae mixture. The multi generation system thermal efficiency was defined as the sum of the total electrical power produced for cultivation in PBR, biomass harvesting, flocculation, separation, drying and oil extraction, followed by biodiesel production via transesterification reaction, plus the waste heat recovery and the heat generation rate potential of the produced biodiesel, divided by the heat input rate due to the combustion of consumed diesel fuel. In the absence of waste heat recovery, maximum thermodynamic efficiency of the system was 26%, while it increased to 36.2% with waste heat recovery and microalgae biodiesel, i.e., by 39.2%. (C) 2018 Elsevier Ltd. All rights reserved.
机译：提出了一种多代发电系统，以回收由柴油机驱动的发电机组产生的废热，并捕获其排放中的CO2以供微藻生长。 Scenedesmus sp。通过提供两种二氧化碳来源：空气和柴油机排放物，在20升的水罐中分别培养藻类混合物。从吸光度确定微藻的生长速率，并进行分析，以解释代替空气的排放是否增强了微藻的生长。此外，微型光生物反应器（mPBR）被用于生长带有空气和二氧化碳作为排放源的本地藻类混合物。实验结果表明，柴油机排放增加了两个Scenedesmus sp。的生长。和当地的藻类混合物。多代系统的热效率定义为在PBR中种植，生物质收获，絮凝，分离，干燥和榨油所产生的总电力之和，然后通过酯交换反应生产生物柴油，再加上废热回收和热量产生的生物柴油的发​​电速率潜力除以由于消耗的柴油燃料燃烧而产生的热量输入速率。在没有废热回收的情况下，系统的最大热力学效率为26％，而在废热回收和微藻类生物柴油的情况下，系统的热力学效率提高到36.2％，即提高了39.2％。 （C）2018 Elsevier Ltd.保留所有权利。

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  • 来源
    《Renewable energy》 |2018年第9期|985-994|共10页
  • 作者

    Telles E. C.; Yang S.; Vargas J. V. C.; Dias F. G.; Ordonez J. C.; Mariano A. B.; Chagas M. B.; Davis T.;

  • 作者单位

    UFPR Univ Fed Parana, Programa Posgrad Engn & Ciencia Mat PIPE, BR-81531980 Curitiba, PR, Brazil;

    Florida State Univ, Dept Mech Engn, Energy & Sustainabil Ctr, Tallahassee, FL 32310 USA;

    UFPR Univ Fed Parana, Programa Posgrad Engn & Ciencia Mat PIPE, BR-81531980 Curitiba, PR, Brazil;

    UFPR Univ Fed Parana, Programa Posgrad Engn & Ciencia Mat PIPE, BR-81531980 Curitiba, PR, Brazil;

    Florida State Univ, Dept Mech Engn, Energy & Sustainabil Ctr, Tallahassee, FL 32310 USA;

    UFPR Univ Fed Parana, Programa Posgrad Engn & Ciencia Mat PIPE, BR-81531980 Curitiba, PR, Brazil;

    Florida State Univ, Dept Mech Engn, Energy & Sustainabil Ctr, Tallahassee, FL 32310 USA;

    Florida State Univ, Dept Mech Engn, Energy & Sustainabil Ctr, Tallahassee, FL 32310 USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Scenedesmus sp.; Biofuels; Sustainable energy; Microalgae; Thermodynamic efficiency;

    机译：Scenedesmus sp .;生物燃料;可持续能源;微藻类;热力学效率;

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