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Cultivation of Scenedesmus obliquus in liquid hydrolysate from flash hydrolysis for nutrient recycling

机译：闪蒸水解液水解液中斜生凤仙花的培养

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摘要

The production of biofuels from microalgae is associated with high demands of nutrients (nitrogen and phosphorus) required for growth. Recycling nutrients from the residual biomass is essential to obtain a sustainable production. In this work, the aqueous phase obtained from flash hydrolysis of Scenedesmus sp. was used as cultivation medium for a microalga of the same genus, to assess the feasibility of this technique for nutrient recycling purposes. Batch and continuous cultivations were carried out, to determine growth performances in this substrate compared to standard media, and verify if a stable biomass production could be obtained. In continuous experiments, the effect of hydrolysate inlet concentration and of residence time were assessed to optimize nutrient supply in relation to productivity. Results obtained show that nutrient recycling is feasible by treating biomass with flash hydrolysis, and Scenedesmus is capable of recycling large amounts of recovered nutrients.
机译：从微藻类生产生物燃料与生长所需的营养素（氮和磷）的高需求有关。从残留的生物质中回收养分对于获得可持续的生产至关重要。在这项工作中，水相从Scenedesmus sp。的快速水解中获得。将其用作相同属微藻的培养基，以评估该技术用于营养物再循环的可行性。进行分批和连续培养，以确定与标准培养基相比该底物的生长性能，并验证是否可以获得稳定的生物量生产。在连续实验中，评估了水解产物入口浓度和停留时间的影响，以优化与生产率相关的营养供应。获得的结果表明，通过快速水解处理生物质可以进行养分循环利用，Scendesmus能够回收大量回收的养分。

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