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首页> 外文期刊>Chemical and Biochemical Engineering Quarterly >Influence of Sparger Type and Regime of Fluid on Biomass and Lipid Productivity of Chlorella vulgaris Culture in a Pilot Airlift Photobioreactor
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Influence of Sparger Type and Regime of Fluid on Biomass and Lipid Productivity of Chlorella vulgaris Culture in a Pilot Airlift Photobioreactor

机译：液体型和液体制剂的影响在试验空运型光生物反应器中小黄类文化生物量和脂质生产率的影响

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The effect of different types of spargers and the influence of the air flow rate on biomass and lipids production by Chlorella vulgaris was evaluated. These data allowed correlation of the hydrodynamic behavior of the photobioreactor with the byproducts production. The hydrodynamic characterization was developed by determining the mixing time (t(M)), hold-up, and total volumetric mass transfer coefficient of CO2, ka(L)(CO2)(T), at increasing air flow rates for three different spargers: star-shaped, cross-shaped and porous glass surface sparger. The hydrodynamic characterization showed that the t, decreased, while the hold-up values and the k(L)a(CO2)(T). increased as a result of the increment in the volumetric air flow rate between 5 to 17 L min(-1). The highest biomass and lipid concentrations were determined at the higher aeration rate (20 L min(-1)), which was correlated with the lower t(M), the higher hold-up and k(L)a(CO2)(T )values. Biomass and lipid production showed an inverse correlation. The highest biomass concentration (750 mg L-1) and the lowest lipid concentration (10 mg L-1) were measured with the star sparger. In contrast, when the lowest biomass concentration was obtained (240 mg L-1), the highest lipid concentration of 196 mg L-1 was measured with the glass sparger. The maximum biomass productivity values were determined at the lower aeration rate and the star sparger, with the minimum power per unit of volume, which could be useful for a cost-effective process.
机译：评估了不同类型的练习物的影响以及气流率对生物量和小球藻的生物质和脂质产生的影响。这些数据允许与副产品产生的光生物反应器的流体动力学行为相关。通过确定CO 2，Ka（L）（CO2）（T）的混合时间（T（m）），保持和总容量体重传递系数，在增加三种不同练习液的空气流速下，开发了流体动力学表征：星形，十字形和多孔玻璃表面涂布器。流体动力学表征显示T，降低，而保持值和K（1）A（CO2）（T）。由于在5至17L min（-1）之间的体积空气流速的增量而增加。以较高的曝气速率（20μlmin（-1））测定最高的生物量和脂质浓度，其与低温（m）相关，较高的保持和k（l）a（co2）（t ）值。生物质和脂质生产表现出反向相关性。用星形喷射测量最高生物质浓度（750mg L-1）和最低脂质浓度（10mg L-1）。相反，当获得最低生物质浓度（240mg L-1）时，用玻璃凝固器测量196mg L-1的最高脂质浓度。最大生物质生产率值以较低的通气率和星形喷射确定，每单位体积的最小功率，这对于具有成本效益的过程可能是有用的。

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