Facile fabrication of fabric-based membrane for adjustable oil-in-water emulsion separation, suspension filtration and dye removal

IF 8.1 1区 工程技术 Q1 ENGINEERING, CHEMICAL
Keru Hou , Kaili Jin , Zhuizhui Fan , Peibo Du , Yating Ji , Jun Wang , Yaping Zhao , Chengjian Yao , Zaisheng Cai
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引用次数: 2

Abstract

Special wettability fabrics-based membranes have shown excellent performance in emulsified oil/water separation, however, their application in separating industrial oil-in-water emulsions still remains a great challenge due to the complexity of multifarious surfactant components. In this work, we demonstrate a simple and facile approach to fabricate fabric-based membranes (P(AM-DMC-AA)@CFs) for complex emulsified oil/water (printing and dyeing wastewater) separation with combining the advantage of amphoteric polyacrylamide layer and cotton fabric in a single system. The amphoteric polyacrylamide surface and tortuous fabric channels synergistically provide the membranes with demulsification adjustability for separating emulsified oil in water which stabilized by anionic/cationic surfactants. Meanwhile, the incorporating of amphoteric polyacrylamide into cotton fabrics had remarkable advantages of both flexible and stable superhydrophilic/underwater superoleophobic. Consequently, the obtained P(AM-DMC-AA)@CFs membranes are endowed with robust superhydrophilicity, underwater superoleophobicity and switchable zeta potential, which make it capable of highly efficient separation of oil/water emulsion (anionic: 94.05%, cationic: 96.19%), suspension filtration (kaolin: 89.5%, hematite: 93.1%,) and concurrent dye removal in 5 min (14.3 mg/g). In addition, the prepared membrane is still effective in separating simulated printing and dyeing wastewater containing multiple pollutants. The facile and versatile design of the P(AM-DMC-AA)@CFs membrane offers new prospects for exploiting fabric-based membranes with extraordinary features for industrial oily wastewater treatment.

Abstract Image

可调水包油乳液分离、悬浮过滤和染料去除用织物基膜的简易制备
特殊润湿性织物基膜在乳化油/水分离中表现出优异的性能,但由于表面活性剂成分繁多,其在工业水包油乳剂分离中的应用仍然是一个很大的挑战。在这项工作中,我们展示了一种简单易行的方法来制造用于复杂乳化油/水(印染废水)分离的织物基膜(P(AM-DMC-AA)@CFs),该方法结合了两性聚丙烯酰胺层和棉织物在单一系统中的优势。两性聚丙烯酰胺表面和弯曲的织物通道协同作用,为分离阴离子/阳离子表面活性剂稳定的水中乳化油提供了破乳可调节性。与此同时,两性聚丙烯酰胺在棉织物中的掺入具有柔韧和稳定的超亲水/水下超疏油的显著优势。因此,制备的P(AM-DMC-AA)@CFs膜具有超强的超亲水性、水下超疏油性和可切换的zeta电位,能够高效分离油/水乳液(阴离子:94.05%,阳离子:96.19%),悬浮过滤(高岭土:89.5%,赤铁矿:93.1%),并在5 min内同时去除染料(14.3 mg/g)。此外,所制备的膜对含多种污染物的模拟印染废水仍有较好的分离效果。P(AM-DMC-AA)@CFs膜的设计简便多样,为开发具有非凡性能的织物基膜用于工业含油废水处理提供了新的前景。
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来源期刊
Separation and Purification Technology
Separation and Purification Technology 工程技术-工程:化工
CiteScore
14.00
自引率
12.80%
发文量
2347
审稿时长
43 days
期刊介绍: Separation and Purification Technology is a premier journal committed to sharing innovative methods for separation and purification in chemical and environmental engineering, encompassing both homogeneous solutions and heterogeneous mixtures. Our scope includes the separation and/or purification of liquids, vapors, and gases, as well as carbon capture and separation techniques. However, it's important to note that methods solely intended for analytical purposes are not within the scope of the journal. Additionally, disciplines such as soil science, polymer science, and metallurgy fall outside the purview of Separation and Purification Technology. Join us in advancing the field of separation and purification methods for sustainable solutions in chemical and environmental engineering.
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