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Influence of diazonium-induced surface grafting on PES NF membrane fouling reduction in algal-rich water treatment
Polymers for Advanced Technologies ( IF 3.4 ) Pub Date : 2021-09-13 , DOI: 10.1002/pat.5489
Fariba Oulad 1 , Sirus Zinadini 1 , Ali Akbar Zinatizadeh 1, 2 , Ali Ashraf Derakhshan 1
Affiliation  

The algae bloom phenomenon incurs a major challenge to conventional drinking water treatment processes due to the discharges of a large amount of intracellular pollutant and odor compounds in the water sources. Membrane processes have been considered as promising technologies to treatment of algal-rich water due to complete algal cell rejection however, its application has been limited by membrane fouling. In this work, the high-performance loose antifouling PES NF membranes were fabricated using diazonium-induced grafting and applied for treating real algal effluent. The modified membranes exhibited complete algal dye removal and turbidity removal throughout the long-term filtration. Also, the coupling and radically modified membranes can be able to removed COD by up to 90% and 88%, respectively, while a removal efficiency of 24% was observed for bare membrane. It is worth noting that, a relative smooth behavior in permeate flux by loose modified membranes during prolonged algal dye filtration, demonstrating exceptional anti-fouling property of membranes. In addition, the fouled modified membranes were effectively recovered by water flushing. Both loose modified membranes exhibited excellent resistance in the strongly acidic environment. These high performance antifouling NF membranes affords an innovative methodology toward the treatment of algal-rich water.

中文翻译:

重氮诱导表面接枝对富藻水处理中PES NF膜污染减少的影响

由于水源中大量细胞内污染物和异味化合物的排放,藻华现象给传统的饮用水处理工艺带来了重大挑战。由于完全排斥藻类细胞,膜法被认为是处理富含藻类水的有前途的技术,然而,其应用受到膜污染的限制。在这项工作中,使用重氮诱导接枝制备了高性能松散防污 PES NF 膜,并应用于处理真正的藻类污水。改性膜在整个长期过滤过程中表现出完全的藻类染料去除和浊度去除。此外,偶联膜和彻底改性膜能够分别去除高达 90% 和 88% 的 COD,而裸膜的去除效率为 24%。值得注意的是,在长时间的藻类染料过滤过程中,松散改性膜的渗透通量表现相对平稳,表明膜具有出色的防污性能。此外,通过水冲洗有效地回收了污染的改性膜。两种松散改性膜在强酸性环境中均表现出优异的耐受性。这些高性能防污 NF 膜为处理富含藻类的水提供了一种创新方法。被污染的改性膜通过水冲洗有效回收。两种松散改性膜在强酸性环境中均表现出优异的耐受性。这些高性能防污 NF 膜为处理富含藻类的水提供了一种创新方法。被污染的改性膜通过水冲洗有效回收。两种松散改性膜在强酸性环境中均表现出优异的耐受性。这些高性能防污 NF 膜为处理富含藻类的水提供了一种创新方法。
更新日期:2021-09-13
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