选择土生土长的突尼斯微藻进行废水处理和生物燃料生产。
Selection of native Tunisian microalgae for simultaneous wastewater treatment and biofuel production.
机构信息
Laboratory of Environmental Bioprocesses, Sfax Centre of Biotechnology, University of Sfax, BP 1177, 3018 Sfax, Tunisia; Chemical Engineering Department, University of Almería, 04120 Almería, Spain.
Chemical Engineering Department, University of Almería, 04120 Almería, Spain; CIESOL, Joint Center University of Almeria-CIEMAT, 04120 Almería, Spain.
出版信息
Bioresour Technol. 2015 Dec;198:424-30. doi: 10.1016/j.biortech.2015.09.037. Epub 2015 Sep 18.
This paper focuses on the selection of native microalgae strains suitable for wastewater treatment and biofuel production. Four Chlorophyceae strains were isolated from North-eastern Tunisia. Their performances were compared in continuous mode at a 0.3 1/day dilution rate. The biomass productivity and nutrient removal capacity of each microalgae strain were studied. The most efficient strain was identified as Scenedesmus sp. and experiments at different dilution rates from 0.2 to 0.8 1/day were carried out. Maximal biomass productivity of 0.9 g/L day was obtained at 0.6 1/day. The removal of chemical oxygen demand (COD), ammonium and phosphorus was in the range of 92-94%, 61-99% and 93-99%, respectively. Carbohydrates were the major biomass fraction followed by lipids and then proteins. The saponifiable fatty acid content was in the 4.9-13.2% dry biomass range, with more than 50% of total fatty acids being composed of saturated and monosaturated fatty acids.
这篇论文侧重于选择适合废水处理和生物燃料生产的本土微藻菌株。从突尼斯东北部分离出了四种绿藻菌株。在 0.31/天的稀释率下，以连续模式比较了它们的性能。研究了每种微藻菌株的生物量生产力和养分去除能力。鉴定出效率最高的菌株为 Scenedesmus sp.，并在 0.2 到 0.81/天的不同稀释率下进行了实验。在 0.61/天的条件下，获得了 0.9g/L 天的最大生物量生产力。化学需氧量（COD）、铵和磷的去除率分别在 92-94%、61-99%和 93-99%之间。碳水化合物是主要的生物质成分，其次是脂质，然后是蛋白质。可皂化脂肪酸含量在干生物质的 4.9-13.2%范围内，总脂肪酸的 50%以上由饱和和单不饱和脂肪酸组成。
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