College of Sericulture, Textile and Biomass Sciences, Southwest University, 400716, Chongqing, PR China; Chongqing Engineering Research Center of Biomaterial Fiber and Modern Textile, 400716, Chongqing, PR China.
College of Sericulture, Textile and Biomass Sciences, Southwest University, 400716, Chongqing, PR China; Chongqing Engineering Research Center of Biomaterial Fiber and Modern Textile, 400716, Chongqing, PR China; State Key Laboratory of Silkworm Genome Biology, Southwest University, 400716, Chongqing, PR China.
Chemosphere. 2022 Sep;302:134840. doi: 10.1016/j.chemosphere.2022.134840. Epub 2022 May 3.
In recent years, kitchen oily wastewater has received much attention because of its harmful effects on the ecological environment. Therefore, separation of oil from kitchen oily wastewater has become an urgent issue. In this study, this problem could be solved using polyester fabrics covered with cupric hydroxide and cellulose. The functional fabric was obtained by the dipping-rolling-drying process which is an easy and practical way to prepare the fabric and could improve the hydrophilicity of polyester. The functional polyester fabric could separate oil/water mixtures completely under the force of gravity with a high water flux of 2079 L m h-3620 L m h and high separation efficiency of 99.6%. Because kitchen oily wastewater contains floating oil and emulsified oil, we also tested the separation of oil-in-water emulsions. The functional polyester fabric could successfully separate the emulsions with the water flux of 1210 L m h-2018 L m h and a separation efficiency of 99.0%. Moreover, the water flux and separation efficiency of functional polyester fabric remained unchanged after the immersion in salt, alkali, and acid solutions, indicating that the functional polyester fabric exhibited commendable environmental stability. The oil in Chongqing Street Noodles soup with a high oil content was separated to simulate real-life oil/water separation, confirming that the functional polyester fabric could be applied to the treatment of kitchen oily wastewater.
近年来，厨房含油废水因其对生态环境的有害影响而受到广泛关注。因此，从厨房含油废水中分离油成为一个亟待解决的问题。本研究采用负载氧化铜和纤维素的聚酯纤维来解决这个问题。功能化纤维是通过浸渍-滚动-干燥工艺制备的，这种方法简单实用，可提高聚酯的亲水性。在重力作用下，功能化聚酯纤维对油水混合物的分离通量高达 2079 L m-3620 L m-3，分离效率高达 99.6%。由于厨房含油废水中含有浮油和乳化油，我们还测试了对含油乳液的分离效果。该功能化聚酯纤维对水通量为 1210 L m-2018 L m-3、分离效率为 99.0%的乳液具有良好的分离效果。此外，功能化聚酯纤维在盐、碱和酸溶液中的浸泡后，其水通量和分离效率保持不变，表明功能化聚酯纤维具有良好的环境稳定性。通过模拟重庆小面高含油废水的实际油水分离，验证了功能化聚酯纤维在厨房含油废水处理中的应用。
