Abstract Filtration was used for the separation of microalgae from water collected at the reservoir of a Baxe, in north-western Spain, where cyanobacterial blooms are known to occur. The barks of Eucalyptus globulus were used as bed filters. Filters were made with compacted and non-compacted barks of 0.5, 1 and 2 g. Filtration of water with compacted barks showed the best results with yields of 43.12, 76.85 and 63.67 % for the different weights. The microalgae obtained and the vegetation filters were used for the manufacturing of pellets to be used as fuels. Their energy potential was studied according to different parameters such as calorific value, humidity, volatile matter and ash content, to verify the requirements for the use of pellets as fuel in biomass boilers met the criteria according to UNE Standards. These pellets meet the requirements of UNE standards established and could, therefore, be used in boilers as biofuels. Obtaining a high heating value above to 15.00 MJ/kg, greater than 17.00 MJ/kg for all samples except the pellet sample with only microalgal biomass. The samples have a lower ash content of (10%), with the exception of the microalgae pellet without eucalyptus bark (13.67%). The use of Eucalyptus bark is a feasible option for the separation of microalgae in aquatic ecosystems. The next step would be to carry out the experiments on a large scale in a reservoir with eutrophication problems, to test if it works correctly under different conditions. Although the aim of obtaining pellets for boilers does not pursue an economic or commercial objective, the results obtained were promising. This would help towards reducing forest waste and as consequence, reducing environmental pollution.

中文翻译：

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蓝桉绿色过滤器，用于从淡水水库中收集微藻，并将收集的生物质用于颗粒生产

摘要 在西班牙西北部的 Baxe 水库收集的水中使用过滤法分离微藻，已知那里发生蓝藻水华。桉树的树皮用作过滤床。过滤器由 0.5、1 和 2 克的压实和非压实树皮制成。用压实的树皮过滤水显示出最好的结果，不同重量的产率分别为 43.12、76.85 和 63.67%。获得的微藻和植物过滤器用于制造用作燃料的颗粒。根据热值、湿度、挥发性物质和灰分含量等不同参数研究它们的能源潜力，以验证在生物质锅炉中使用颗粒作为燃料的要求符合 UNE 标准的标准。这些颗粒符合 UNE 标准的要求，因此可用作锅炉中的生物燃料。获得高于 15.00 MJ/kg 的高热值，除仅含有微藻生物质的颗粒样品外，所有样品均大于 17.00 MJ/kg。除了不含桉树皮的微藻颗粒 (13.67%) 外，样品的灰分含量较低 (10%)。使用桉树皮是分离水生生态系统中微藻的可行选择。下一步将是在存在富营养化问题的水库中进行大规模实验，以测试其在不同条件下是否正常工作。虽然获得锅炉用球团的目标并不追求经济或商业目标，但所获得的结果是有希望的。