Feiyun Li , Jinxian Shan , Helin Li , Hongming Lou , Yanjun Tang
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引用次数: 0
Abstract
The discharge of industrial oily wastewater causes a significant waste of resources and serious environmental pollution problems. Oil- water separation and recycling waste oil are effective ways for human society to achieve sustainable development. In this work, a series of temperature dependent flux adjustable “dehydration type” cellulose nanofiber-based (CNFS) films was constructed for achieving efficient oil-water separation, which were obtained by using physical blending of polyvinyl alcohol (PVA) and cellulose nanofibers (CNF) modified by sulfobetaine fragment (SB). CNFS-based films with high SB content had high water flux. At room temperature, after 20 cycles, the water flux of CNFS-5/15%PVA film was 881 L m−2 h−1 for separating petroleum ether/water lotion, and the oil-water separation efficiency was 93.4 %. CNFS-based films exhibited higher water fluxes at high temperatures. For example, at 35 °C, the water flux of CNFS-5/15%PVA film was 1.5 times that at room temperature. The higher water flux of CNFS-based films at high temperatures was attributed to their higher hydrophilicity. In this work, SB was used to endow CNF with temperature response. And the CNFS-based films can effectively separate oil lotion by regulating the water fluxes through temperature, which provides a new idea for oil-water separation and recycling waste oil.
期刊介绍:
Carbohydrate Polymers stands as a prominent journal in the glycoscience field, dedicated to exploring and harnessing the potential of polysaccharides with applications spanning bioenergy, bioplastics, biomaterials, biorefining, chemistry, drug delivery, food, health, nanotechnology, packaging, paper, pharmaceuticals, medicine, oil recovery, textiles, tissue engineering, wood, and various aspects of glycoscience.
The journal emphasizes the central role of well-characterized carbohydrate polymers, highlighting their significance as the primary focus rather than a peripheral topic. Each paper must prominently feature at least one named carbohydrate polymer, evident in both citation and title, with a commitment to innovative research that advances scientific knowledge.