Ruixiang Qu , Shuaiheng Zhao , Na Liu , Xiangyu Li , Huajun Zhai , Ya'nan Liu , Yen Wei , Lin Feng
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引用次数: 1
摘要
尽管近年来超润湿材料处理含油废水引起了人们的高度重视,但如何处理大体积乳化废水仍然是一个难题,这归因于乳化液的积累。在此,为了解决这个问题,提出了一种将化学破乳和三维内外不对称润湿性巧妙地结合到海绵基底上的材料,从而基于“破乳传输”机制实现了润湿性梯度驱动的油定向传输,以实现前所未有的大体积乳化废水处理。海绵在一个循环中实现的最大处理量高达3L(每立方米海绵2.08×104L),约为报道材料的100倍。此外,由于海绵的孔径较大,同时实现了9000 L m2 h−1(LMH)的分离通量和99.5%的分离效率,克服了折衷的困境。这种三维内外不对称海绵在处理体积上显示出前所未有的优势,可以促进含油废水处理领域的发展,并拓展超润湿材料的应用前景,特别是在连续水处理中。
3D inner-outer asymmetric sponge for enormous-volume emulsion wastewater treatment based on a new “demulsification-transport” mechanism
Although oily wastewater treatment realized by superwetting materials has attracted heightened attention in recent years, how to treat enormous-volume emulsion wastewater is still a tough problem, which is ascribed to the emulsion accumulation. Herein, to address this problem, a material is presented by subtly integrating chemical demulsification and 3D inner-outer asymmetric wettability to a sponge substrate, and thus wettability gradient-driven oil directional transport for achieving unprecedented enormous-volume emulsion wastewater treatment is realized based on a “demulsification-transport” mechanism. The maximum treatment volume realized by the sponge is as large as 3 L (2.08 × 104 L per cubic meter of the sponge) in one cycle, which is about 100 times of the reported materials. Besides, owing to the large pore size of the sponge, 9000 L m2 h−1 (LMH) separation flux and 99.5% separation efficiency are realized simultaneously, which overcomes the trade-off dilemma. Such a 3D inner-outer asymmetric sponge displaying unprecedented advantage in the treatment volume can promote the development of the oily wastewater treatment field, as well as expand the application prospects of superwetting materials, especially in continuous water treatment.
期刊介绍:
Green Energy & Environment (GEE) is an internationally recognized journal that undergoes a rigorous peer-review process. It focuses on interdisciplinary research related to green energy and the environment, covering a wide range of topics including biofuel and bioenergy, energy storage and networks, catalysis for sustainable processes, and materials for energy and the environment. GEE has a broad scope and encourages the submission of original and innovative research in both fundamental and engineering fields. Additionally, GEE serves as a platform for discussions, summaries, reviews, and previews of the impact of green energy on the eco-environment.