Microalgal biorefinery:Biofilm photo-reactor and extraction methods

微藻生物精炼：生物膜光反应器和提取方法

• 批准号: 380795-2009
• 负责人: Allen, DGrant
• 金额: $ 8.38万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Strategic Projects - Group
• 财政年份: 2012
• 资助国家: 加拿大
• 起止时间: 2012-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=515289
• 关键词: Microalgal; biorefinery; Biofilm; photo; reactor

Microalgal technologies, used as a method of conversion of (sun)light to liquid fuels, hold several advantages over conventional crops: they can produce up to 100 times more biomass per unit of crop area; the lipid content of this biomass can be up to 70% (dry basis); the doubling time can be in the order of few days; and they can grow in aggressive environments, including saline or even alkaline waters. Despite all these advantages, biodiesel produced using current microalgal cultivation and processing technology is not economic. Most of the costs are associated with various separation and extraction steps that have not been addressed. Furthermore, a "biorefinery" (multi-product) approach to microalgae processing could significantly improve the overall process economics. To address these issues we propose the use of a microalgal biofilm technology whereby microalgae will grow in photoreactors packed with a fibrous substrate (large area to volume ratios). By simple changes in the feed to the reactor we plan to evaluate various aqueous extraction techniques, ranging from aggressive alkaline emulsions (designed to break the cell walls and extract all the biomass) to mild non-toxic

微藻技术被用作将(太阳能)光转化为液体燃料的一种方法，与传统作物相比具有几个优点：它们可以在单位作物面积上生产高达100倍的生物量；这种生物量的脂肪含量可以高达70%(干基)；倍增时间可以在几天左右；它们可以在恶劣的环境中生长，包括盐水甚至碱性水域。尽管有这些优势，但使用目前的微藻培养和加工技术生产生物柴油并不经济。大部分费用与尚未解决的各种分离和提取步骤有关。此外，微藻加工的“生物精炼”(多产品)方法可以显著提高整个过程的经济性。为了解决这些问题，我们建议使用微藻生物膜技术，利用该技术，微藻将在填充有纤维基质(大面积与体积比)的光反应器中生长。通过对反应器进料的简单改变，我们计划评估各种水提取技术，从侵略性碱性乳状液(设计用于打破细胞壁并提取所有生物量)到温和无毒的。