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Development of amino-functionalized membranes for removal of microorganism
Innovative Food Science & Emerging Technologies ( IF 6.6 ) Pub Date : 2018-05-24 , DOI: 10.1016/j.ifset.2018.05.023
Nataly Peña-Gómez , María Ruiz-Rico , Isabel Fernández-Segovia , José M. Barat

Treatments to ensure water supply of an acceptable hygienic-sanitary quality is of vast importance. Among unconventional treatments, membrane technologies have recently stood out. Immobilization of antimicrobial compounds onto membranes can prevent fouling and lead to self-cleaning matrices. In this study, cellulose membranes functionalized with amines were developed to assess their capability to remove microbial contamination. Water samples with several levels of Escherichia coli inoculum were filtered through membranes, and different trials were run to check the system's effectiveness. The amino-functionalized membranes were able to filter water samples in a few seconds, and partially or completely remove the inoculated microorganism depending on the inoculum level. The amine-functionalized membranes displayed significant retention capacity in samples with high bacterial concentrations and were able to decontaminate water with low microbial load. Membranes can be reused with no apparent loss of efficiency. Hence, this study demonstrates the high potential of amine-functionalized membranes in drinking water treatments.

Industrial relevance

Filtration represents an important non-thermal process used for clarification, concentration and microbial stabilization of liquid fluids. However, membrane fouling and related cleaning requirements are critical factors determining the extensive application of this technology. This work represents an important starting point to the development of new antimicrobial surfaces due to the demonstrated advantages associated to the covalent immobilization for the development of novel filtration treatment methodologies.



中文翻译:

氨基去除微生物功能膜的开发

确保供水质量达到可接受的卫生标准的处理极为重要。在非常规治疗中,膜技术最近脱颖而出。将抗菌化合物固定在膜上可以防止结垢并导致自清洁基质。在这项研究中,开发了用胺官能化的纤维素膜,以评估其去除微生物污染的能力。几种大肠杆菌水平的水样通过膜过滤接种物,并进行了不同的试验以检查系统的有效性。氨基官能化的膜能够在几秒钟内过滤出水样,并根据接种物的水平部分或完全去除被接种的微生物。胺官能化膜在细菌浓度高的样品中显示出显着的保留能力,并能够对微生物负荷低的水进行净化。可以重复使用膜而不会明显降低效率。因此,这项研究证明了在饮用水处理中胺官能化膜的巨大潜力。

行业相关性

过滤代表了重要的非热过程,用于澄清,浓缩和稳定液体。但是,膜结垢和相关的清洁要求是决定该技术广泛应用的关键因素。这项工作代表了开发新的抗菌表面的重要起点,这归因于与共价固定化相关的已证明的优势,可以开发出新型的过滤处理方法。

更新日期:2018-05-24
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