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首页> 外文期刊>Environmental Science & Technology >Membrane-Based Energy Efficient Dewatering of Microalgae in Biofuels Production and Recovery of Value Added Co-Products
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Membrane-Based Energy Efficient Dewatering of Microalgae in Biofuels Production and Recovery of Value Added Co-Products

机译：生物燃料生产中基于膜的微藻类高效脱水和增值联产品的回收

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摘要

The objective of this paper is to describe the use of membranes for energy efficient biomass harvesting and dewatering. The dewatering of Nannochloropsis sp. was evaluated with polymeric hollow fiber and tubular inorganic membranes to demonstrate the capabilities of a membrane-based system to achieve microalgal biomass of > 150 g/L (dry wt.) and ~99% volume reduction through dewatering. The particle free filtrate containing the growth media is suitable for recycle and reuse. For cost-effective processing, hollow fiber membranes can be utilized to recover 90-95% media for recycle. Tubular membranes can provide additional media and water recovery to achieve target final concentrations. Based on the operating conditions used in this study and taking into scale-up considerations, an integrated hollow fiber-tubular membrane system can process microalgal biomass with at least 80% lower energy requirement compared to traditional processes. Backpulsing was found to be an effective flux maintenance strategy to minimize flux decline at high biomass concentration. An effective chemical cleaning protocol was developed for regeneration of fouled membranes.
机译：本文的目的是描述使用膜进行节能生物质的收集和脱水。 Nannochloropsis sp。的脱水用聚合物中空纤维和管状无机膜对膜进行了评估，以证明基于膜的系统能够实现> 150 g / L（干重）的微藻生物量，并通过脱水使体积减少约99％。含有生长培养基的无颗粒滤液适合回收和再利用。对于具有成本效益的工艺，中空纤维膜可用于回收90-95％的介质以进行回收。管状膜可以提供额外的介质和水回收率，以达到目标最终浓度。基于本研究中使用的操作条件并考虑到扩大规模的考虑，与传统工艺相比，集成的中空纤维-管状膜系统可以处理微藻生物质，其能源需求至少低80％。发现反冲是一种有效的通量维持策略，可以最大程度地降低高生物质浓度下的通量下降。开发了一种有效的化学清洁方案，用于污垢膜的再生。

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  • 来源
    《Environmental Science & Technology》 |2012年第10期|p.5599-5606|共8页
  • 作者

    Ramesh Bhave; Tanya Kuritz; Lawrence Powell; Dale Adcock;

  • 作者单位

    Materials Science and Technology Division;

    Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States;

    Materials Science and Technology Division;

    Materials Science and Technology Division;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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