浙江大学徐志康团队报道了Janus膜通道从乳液中同时回收油和水。相关研究成果发表在2024年11月8日出版的国际学术期刊《科学》。

现有的分离技术难以从表面活性剂稳定的乳液中同时回收油和水，以实现接近零液体排放的目标。

研究人员提出了一种Janus膜通道（JCM），其存在一对亲水性和疏水性膜构成的封闭结构，可以同时高效地从表面活性器稳定的乳液中收回油和水。

受限的Janus通道可以通过涉及富集和破乳的反馈回路，放大膜对的相互作用。该JCM实现了卓越的油和水回收率，分别高达97%和75%，纯度接近99.9%。

此外，它在处理各种乳液方面的多功能性，可能使一系列分离的液体排放接近于零。

附：英文原文

Title: Janus channel of membranes enables concurrent oil and water recovery from emulsions

Author: Xin-Yu Guo, Lei Zhao, Hao-Nan Li, Hao-Cheng Yang, Jian Wu, Hong-Qing Liang, Chao Zhang, Zhi-Kang Xu

Issue&Volume: 2024-11-08

Abstract: Existing separation technologies struggle to recover oil and water concurrently from surfactant-stabilized emulsions to achieve the goal of near-zero liquid discharge. We present a Janus channel of membranes (JCM) that features a confined architecture constructed of a pair of hydrophilic and hydrophobic membranes, which allows for concurrent, highly efficient recovery of oil and water from surfactant-stabilized emulsions. The confined Janus channel can amplify the interplay of the membrane pair through a feedback loop that involves enrichment and demulsification. Our JCM achieves exceptional oil and water recoveries of up to 97 and 75%, respectively, with near 99.9% purities. Moreover, its versatility in handling diverse emulsions may enable near-zero liquid discharge for a range of separations.

DOI: adq6329

Source: https://www.science.org/doi/10.1126/science.adq6329