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两性离子涂层陶瓷膜抗污染性能的增强。

Enhancement of the Fouling Resistance of Zwitterion Coated Ceramic Membranes.

作者信息

Storms Max, Kadhem Abbas J, Xiang Shuting, Bernards Matthew, Gentile Guillermina J, Fidalgo de Cortalezzi María M

机构信息

Department of Civil and Environmental Engineering, University of Missouri, E3509 Lafferre Hall, Columbia, MO 65211, USA.

Department of Chemical Engineering, University of Missouri, E3509 Lafferre Hall, Columbia, MO 65211, USA.

出版信息

Membranes (Basel). 2020 Aug 29;10(9):210. doi: 10.3390/membranes10090210.

Abstract

Ceramic membranes suffer from rapid permeability loss during filtration of organic matter due to their fouling propensity. To address this problem, iron oxide ultrafiltration membranes were coated with poly(sulfobetaine methacrylate) (polySBMA), a superhydrophilic zwitterionic polymer. The ceramic-organic hybrid membrane was characterized by scanning electron microscopy (SEM) and optical profilometry (OP). Membranes with and without polySBMA coating were subjected to fouling with bovine serum albumin solution. Hydraulic cleaning was significantly more effective for the coated membrane than for the non-coated one, as 56%, 66%, and 100% of the fouling was removed for the first, second, and third filtration cycle, respectively. Therefore, we can highlight the improved cleaning due to an increased fouling reversibility. Although some loss of polymer during operation was detected, it did not affect the improved behavior of the tested membranes.

摘要

由于具有结垢倾向,陶瓷膜在过滤有机物过程中会迅速丧失渗透性。为解决这一问题,用聚(甲基丙烯酸磺酸甜菜碱)(聚SBMA)(一种超亲水两性离子聚合物)对氧化铁超滤膜进行了涂层处理。通过扫描电子显微镜(SEM)和光学轮廓仪(OP)对陶瓷-有机杂化膜进行了表征。对有和没有聚SBMA涂层的膜用牛血清白蛋白溶液进行结垢处理。水力清洗对涂层膜的效果明显比对未涂层膜好,因为在第一、第二和第三个过滤循环中分别去除了56%、66%和100%的污垢。因此,我们可以强调由于污垢可逆性增加而带来的清洗效果改善。尽管在运行过程中检测到聚合物有一些损失,但这并未影响测试膜的改善性能。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2858/7557540/be681358c0f2/membranes-10-00210-g001.jpg

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