Li Cunlong, Zhang Yuqing, Yong Ming, Liu Wei, Wang Jiaqi
School of Chemical Engineering and Technology, Tianjin University Tianjin 300072 PR China
RSC Adv. 2019 Apr 5;9(19):10702-10714. doi: 10.1039/c9ra00521h. eCollection 2019 Apr 3.
In order to effectively clean oily seawater with anionic polyacrylamide (APAM), UiO-66 coated γ-AlO (UA) composites were firstly synthesized using γ-AlO as a template to induce the growth of high hydrophilic UiO-66 on its surface to form a uniform UA self-assembled membrane. The UA composites and self-assembled membrane were characterized and analyzed. Also, the membrane performance was investigated. The results show that the hydrophilicity of particles is enhanced with the water contact angle decreasing from 39.8° (γ-AlO particles) to 26.2° (UA composites) by introducing the UiO-66 coating. Moreover, the UA self-assembled membrane performs attractive water yield and separation performance. The oil concentration in the permeate treated by the first class of UA self-assembled membrane declines apparently from 91.22 to 18.90 mg L, while the water yield is as high as 657.89 L m h. The reclaimed separation experiments show that the membrane materials could be recycled by calcination at 200 °C and hydraulic cleaning, which gives the material potential application in cleaning oily seawater.
为了用阴离子聚丙烯酰胺（APAM）有效净化含油海水，首先以γ -AlO为模板合成了UiO-66包覆的γ -AlO（UA）复合材料，以诱导高亲水性的UiO-66在其表面生长，形成均匀的UA自组装膜。对UA复合材料和自组装膜进行了表征与分析。此外，还研究了膜性能。结果表明，通过引入UiO-66涂层，颗粒的亲水性增强，水接触角从39.8°（γ -AlO颗粒）降至26.2°（UA复合材料）。而且，UA自组装膜具有诱人的产水率和分离性能。第一类UA自组装膜处理后的渗透液中油浓度明显从91.22降至18.90 mg/L，而产水率高达657.89 L m h。再生分离实验表明，膜材料可通过在200℃煅烧和水力清洗进行循环利用，这赋予了该材料在净化含油海水中的潜在应用价值。
