콘텐츠 본문
논문 해외 국제전문학술지(SCI급) Surface Design of Separators for Oil/Water Separation with High Separation Capacity and Mechanical Stability
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2017-07
- 저자명 Yong Taek Lim, Nara Han, Wooree Jang, Wooyoung Jung, Min Oh, Seung Whan Han, Hye Young Koo, and Won San Choi*
- 학술지명 Langmuir
- 발행처명 ACS Publications
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 8
- 논문 다운로드 링크(외부) https://doi.org/10.1021/acs.langmuir.7b01800
- 연구분야 공학 > 화학공학
논문 초록 (Abstract)
A convection heat treatment that can replace existing chemical oxidation methods was developed for the preparation of hierarchically oxidized Cu meshes with various surface morphologies, representing a very simple and green route that does not involve toxic chemicals. Three types of Cu meshes [bumpy-like (BL) and short and long needle-like (NL) structures] exhibited similar separation efficiencies of 95–99% over 20 separation cycles, as indicated by their similar water contact angles (WCAs; 147–150°). However, these Cu meshes exhibited different flux behaviors. Excessively rough and excessively smooth surfaces of the Cu mesh resulted in increased resistance to flow and to a decrease of the penetration of oil. A surface with intermediate smoothness, such as the BL-Cu mesh, was necessary for high flux over a broad range of oil viscosities. Furthermore, a less rough surface was more suitable for the separation of highly viscous oil. Computational fluid dynamics (CFD) simulations were carried out to support our experimental results. The BL-Cu meshes also showed outstanding mechanical stability because of their low resistance to the flow of fluids.
