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首页> 外文期刊>Aquacultural Engineering: An International Journal >Design and performance of a low-cost, automated, large-scale photobioreactor for microalgae production
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Design and performance of a low-cost, automated, large-scale photobioreactor for microalgae production

机译：设计和性能低成本，自动化，大规模光生物反应器，用于微藻生产

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Microalgae feed production is a major cost in bivalve aquaculture. Its efficiency is increased by scaling it up under automated control of environmental conditions. The initial cost of commercially available systems can be prohibitive. Therefore, a large volume full-scale photobioreactor built of low-cost, readily available materials was developed and tested. A cone-bottom, polyethylene tank was internally illuminated with submersible fluorescent lamps and equipped with a monitoring and control system that measured temperature, pH and optical density of the microalgal culture. Injection of CO2 was automated to maintain pH within a target range. System performance was evaluated by growing four batch cultures of Tetraselmis chuff. Temperature inside the photobioreactor was 29.5 +/- 2.38 degrees C (mean +/- SD, range 21 - 35 degrees C) and pH was 7.56 +/- 0.87 (mean +/- SD, range 5.29-8.97). Optimal harvest time was after 300 h (12.5 days) of growth, yielding 1700 L of microalgae at a density of 2500 cells/mu l (1200 cells/mu l/m(2) illuminated surface area). With 24 h illumination, the fluorescent lights, air pump and monitoring/ control device consumed 14.9, 1.9 and 0.1kwh/ day, respectively. Assuming the microalgae are harvested at their optimal density after 12.5 days, each batch would consume 211kwh or 0.124kwh/ liter. The photobioreactor described provides an economical option for growing large amounts of microalgae for aquaculture feed and other purposes.
机译：微藻饲料生产是双伐水产养殖的主要成本。通过在环境条件的自动控制下扩大它来提高其效率。市售系统的初始成本可能是禁止的。因此，开发和测试了由低成本的大量全尺寸光生物反应器构建和易于使用的材料。锥形底部，聚乙烯罐内部用潜水荧光灯呈内部照射，并配备了测量温度，pH和微藻培养的光密度的监测和控制系统。将CO 2注入为靶范围内的pH维持pH。通过生长四种批量生植物的四分之一的鳞茎培养来评估系统性能。光生物反应器内的温度为29.5 +/- 2.38℃（平均+/-SD，21-35℃）和pH为7.56 +/- 0.87（平均+/- SD，范围5.29-8.97）。最佳收缩时间在300小时（12.5天）的生长后，产生1700升的微藻，密度为2500个细胞/ mu L（1200个细胞/ mu L / m（2）发光表面积）。用24小时照明，荧光灯，空气泵和监测/控制装置分别消耗14.9,1.9和0.1kWh /天。假设在12.5天后以最佳密度收获微藻，每批都会消耗211kWh或0.124kWh /升。所描述的光生物反应器提供了一种经济的选择，用于生长大量微藻用于水产养殖饲料和其他目的。

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