Abstract：
Nowadays, effluent treatment is a severe challenge mainly because of its complex composition, which includes oil, heavy metal ions, and dyes. Developing new intelligent membranes is one of the strategies to tackle these significant challenges in wastewater treatment. In this study, we fabricated asymmetric polyethylene glycol terephthalate (PET) membranes by grafting cross-linked poly (itaconic anhydride) (CL-PITA) nanoparticles onto the irradiated face. These nanoparticles were then functionalized with polyethyleneimine (PEI) and protonated with HCl to introduce numerous active electropositive amine groups. The fundamental purpose was to increase surface roughness, introduce numerous hydrophilic groups, and modify it to create a multi-functional PET membrane to separate complex environments. The promising results demonstrated that the protonated PET-g-ITA/DVB(10)-cat membrane exhibited excellent separation efficiencies (SE) for water/light oil, water/heavy oil and oil-in-water (O/W) emulsion. Compared to PET-g-ITA/DVB(0)-cat, it showed superior performance in SE for O/W emulsion and flux decay for water/light oil after 10 cycles. More interestingly, owing to numerous positively charged active amino groups and negativley charged carboxylate groups, the intelligent membrane exhibited a high removal rate of ca. 90 % for anionic dye (congo red) and heavy metals (Cu2+ and Co2+), showing great potential in complex water treatment environments.
摘要：
如今,废水处理是一个严峻的挑战，主要是因为其复杂的成分，其中包括石油，重金属离子,和染料。开发新的智能膜是解决废水处理中这些重大挑战的策略之一。在这项研究中,我们通过将交联的聚（衣康酸酐）（CL-PITA）纳米颗粒接枝到辐照面上，制备了不对称的聚对苯二甲酸乙二醇酯（PET）膜。然后将这些纳米颗粒用聚乙烯亚胺(PEI)官能化并用HCl质子化以引入许多活性正电性胺基。基本目的是增加表面粗糙度，引入许多亲水基团，并对其进行修改以创建多功能PET膜以分离复杂的环境。结果表明，质子化的PET-g-ITA/DVB（10）-cat膜对水/轻油具有优异的分离效率（SE），水/重油和水包油（O/W）乳液。与PET-g-ITA/DVB(0)-cat相比，经过10次循环后，它在O/W乳液的SE和水/轻油的通量衰减方面表现出优异的性能。更有趣的是，由于许多带正电荷的活性氨基和带负电荷的羧酸酯基团，智能膜表现出较高的去除率。90%为阴离子染料(刚果红)和重金属(Cu2+和Co2+)，在复杂的水处理环境中显示出巨大的潜力。
