Efficient membrane-based technology for microalgae harvesting can be achieved via application effective membrane fouling control coupled with appropriate membrane materials. This study explores the combined impact of membrane properties and the tilted panel system on filterability of Euglena sp broth, a potential source of biofuel feedstock. Four membranes from polyvinylidene difluoride (PVDF) and polysulfone (PSF) of PVDF-1, PVDF-3, PSF-1 and PSF-3 were evaluated. Generally, increasing aeration rate, tilting angle and lowering switching period enhance the system performance for all the tested membranes to give the highest permeances of 660, 724, 743 L/m² h bar, respectively. Those values are among the highest reported in literature. The magnitude of the effect is affected by the membrane properties, mainly by pore size. Tilting without switching configuration is desirable for the membrane with a large pore size (PVDF-1, 0.42 μm) which produced the highest panel permeability of 724.3 (L/m² h bar), which is >23% higher than the tilted with switching. For this membrane, intermittent aeration applied under switching mode worsened the pore blocking. Membranes with low pore sizes (0.11, 0.04 and 0.03 μm for PVDF-3, PSF-1 and PSF-3, respectively) excelled under switching mode since they are less prone to pore blocking due to smaller pore apertures. Overall results suggest that to gain the full benefit of the tilted panel, operational system of either one-sided without switching or two-sided involving switching must be tailored in conjunction with the desirable properties of the membranes. This finding can help to lower the energy input for microalgae-based biofuel production.

通过应用有效的膜污染控制和适当的膜材料，可以实现有效的基于膜的微藻收获技术。这项研究探讨了膜特性和倾斜面板系统对Euglena sp肉汤（一种生物燃料原料的潜在来源）的可过滤性的综合影响。评价了聚偏二氟乙烯（PVDF）和聚砜（PSF）的PVDF-1，PVDF-3，PSF-1和PSF-3的四个膜。通常，增加通气率，倾斜角和缩短切换周期可增强所有被测膜的系统性能，以提供660、724、743 L / m ²的最高渗透率 h bar分别。这些值是文献中报道的最高值。效果的大小受膜性能的影响，主要受孔径的影响。对于大孔径（PVDF-1，0.42μm）的膜而言，不需切换配置即可倾斜，该膜可产生724.3（L / m ²）的最高面板渗透率h bar），比通过切换倾斜的结果高出23％以上。对于这种膜，在切换模式下进行间歇通气会使孔的阻塞变得更糟。低孔径的膜（PVDF-3，PSF-1和PSF-3的孔径分别为0.11、0.04和0.03μm）在切换模式下表现出色，因为它们由于较小的孔径而不易于阻塞孔。总体结果表明，要获得倾斜面板的全部好处，必须结合膜的理想特性来定制不切换的单面操作系统或涉及切换的双面操作系统。这一发现可以帮助降低基于微藻类生物燃料生产的能量输入。