Effective pathogen removal in sustainable natural fiber Moringa filters
Effective pathogen removal in sustainable natural fiber Moringa filters
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DOI：
10.1038/s41545-022-00170-5
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发表时间：
2022-07-06
期刊：
影响因子：
11.4
通讯作者：
Kumar，Manish
中科院分区：
文献类型：
--
作者：
Samineni，Laxmicharan;De Respino，Sophie;Kumar，Manish
水的病原体污染对全球人类健康产生巨大影响。特别是，由于病毒的小尺寸和作为单独的病毒体以及当被吸收到较大颗粒上时在水中的存在，病毒对水处理技术提出了独特的挑战。低能耗的水处理工艺，如介质过滤，由于体积小，不能完全去除病毒。因此，通常需要具有高化学品或能量消耗的可持续性较低的工艺，例如化学消毒，紫外线照射和膜过滤。为了克服病毒处理的高能量和/或化学要求，设计了由最低限度加工的天然材料制成的可持续纤维过滤器，用于有效的病毒（MS 2）和细菌（E.大肠杆菌）去除。这些过滤器是通过功能化容易获得的天然纤维，包括棉花，丝绸和亚麻与简单的水提取物含有阳离子蛋白从辣木oleiferaseeds。所提出的过滤器提供了一种全面的低成本、低能耗和低环境影响的解决方案，用于从水中去除病原体，对病毒和细菌的去除率> 7 log 10（99.99999%）。
Pathogen contamination of water has a massive impact on global human health. In particular, viruses pose unique challenges to water treatment techniques due to their small size and presence in water as both individual virions and when absorbed onto larger particles. Low-energy water treatment processes such as media filtration are not capable of completely removing viruses owing to their small size. Hence, less sustainable processes with high chemical or energy consumption such as chemical disinfection, ultraviolet irradiation, and membrane filtration are usually required. To overcome high energy and/or chemical requirements for virus treatment, designs for sustainable fiber filters fabricated from minimally processed natural materials for efficient virus (MS2) and bacteria (E. coli) removal are presented in this work. These filters were created by functionalizing readily accessible natural fibers including cotton, silk, and flax with a simple aqueous extract containing cationic proteins fromMoringa oleiferaseeds. The proposed filters offer a comprehensive low cost, low energy, and low environmental impact solution for pathogen removal from water with removals of >7log10(99.99999%) for viruses and bacteria.