Rodríguez-Sáez Laura, Landaburu-Aguirre Junkal, García-Calvo Eloy, Molina Serena
IMDEA Water Institute, Av. Punto Com, 2, Alcalá de Henares, 28805 Madrid, Spain.
Chemical Engineering Department, Alcalá University, Alcalá de Henares, 28805 Madrid, Spain.
Membranes (Basel). 2024 Jul 5;14(7):149. doi: 10.3390/membranes14070149.
A validation study using recycled ultrafiltration membranes (r-UF) on an aerobic membrane bioreactor (aMBR) was conducted for the first time. Four different polyethersulfone (PES) membranes were tested using synthetic urban wastewater (COD 0.4-0.5 g/L) during two experimental periods: (i) recycled ultrafiltration membrane (r-UF) and commercial UF membrane (molecular weight cut-off (MWCO) 150 kDa) (c-150 kDa); (ii) r-UF membrane modified by dip-coating using catechol (CA) and polyethyleneimine (PEI) (mr-UF) and c-20 kDa membrane. Permeability, fouling behavior, and permeate quality were evaluated. Extensive membrane characterization was conducted using scanning electron microscopy (SEM), atomic force microscopy (AFM), energy-dispersive X-ray (EDX), and confocal laser scanning microscopy (CLSM). Permeate quality for r-UF and mr-UF membranes was excellent and comparable to that obtained using commercial membranes under similar conditions. Additionally, r-UF and mr-UF membranes presented a steadier performance time. Additionally, r-UF membrane demonstrated less tendency to be fouled (R, m) r-UF 7.92 ± 0.57 × 10; mr-UF 9.90 ± 0.14 × 10, c-150 kDa 1.56 ± 0.07 × 10 and c-20 kDa 1.25 ± 0.50 × 10. The r-UF membrane showed an excellent antibiofouling character. Therefore, r-UF membranes can be successfully implemented for wastewater treatment in aMBR, being a sustainable and cost-effective alternative to commercial membranes that can contribute to overcome membrane fouling and membrane replacement issues.
首次对好氧膜生物反应器（aMBR）中使用的再生超滤膜（r-UF）进行了验证研究。在两个实验阶段，使用合成城市污水（化学需氧量0.4 - 0.5 g/L）对四种不同的聚醚砜（PES）膜进行了测试：（i）再生超滤膜（r-UF）和商业超滤膜（截留分子量（MWCO）150 kDa）（c-150 kDa）；（ii）通过使用邻苯二酚（CA）和聚乙烯亚胺（PEI）浸涂改性的r-UF膜（mr-UF）和c-20 kDa膜。评估了渗透率、污染行为和渗透液质量。使用扫描电子显微镜（SEM）、原子力显微镜（AFM）、能量色散X射线（EDX）和共聚焦激光扫描显微镜（CLSM）进行了广泛的膜表征。r-UF和mr-UF膜的渗透液质量优异，与在类似条件下使用商业膜获得的质量相当。此外，r-UF和mr-UF膜表现出更稳定的性能时间。此外，r-UF膜显示出较低的污染倾向（R，m）r-UF 7.92±0.57×10；mr-UF 9.90±0.14×10，c-150 kDa 1.56±0.07×10和c-20 kDa 1.25±0.50×10。r-UF膜表现出优异的抗生物污染特性。因此，r-UF膜可成功应用于aMBR中的废水处理，是商业膜的一种可持续且具有成本效益的替代方案，有助于克服膜污染和膜更换问题。
