Fish gill inspired crossflow for efficient and continuous collection of spilled oil
File version
Accepted Manuscript (AM)
Author(s)
Tian, Dongliang
Sun, Ziqi
Liu, Qiannan
Zhang, Na
Kim, Jung Ho
Jiang, Lei
Dou, Shi Xue
Griffith University Author(s)
Primary Supervisor
Other Supervisors
Editor(s)
Date
Size
File type(s)
Location
License
Abstract
Developing an effective system to clean up large-scale oil spills is of great significance due to their contribution to severe environmental pollution and destruction. Superwetting membranes have been widely studied for oil/water separation. The separation, however, adopts a gravity-driven approach that is inefficient and discontinuous due to quick fouling of the membrane by oil. Herein, inspired by the crossflow filtration behavior in fish gills, we propose a crossflow approach via a hydrophilic, tilted gradient membrane for spilled oil collection. In crossflow collection, as the oil/water flows parallel to the hydrophilic membrane surface, water is gradually filtered through the pores, while oil is repelled, transported, and finally collected for storage. Owing to the selective gating behavior of the water-sealed gradient membrane, the large pores at the bottom with high water flux favor fast water filtration, while the small pores at the top with strong oil repellency allow easy oil transportation. In addition, the gradient membrane exhibits excellent antifouling properties due to the protection of the water layer. Therefore, this bioinspired crossflow approach enables highly efficient and continuous spilled oil collection, which is very promising for the cleanup of large-scale oil spills.
Journal Title
ACS Nano
Conference Title
Book Title
Edition
Volume
11
Issue
3
Thesis Type
Degree Program
School
Publisher link
Patent number
Funder(s)
Grant identifier(s)
Rights Statement
Rights Statement
This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Nano, © 2017 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsnano.6b07918
Item Access Status
Note
Access the data
Related item(s)
Subject
Nanotechnology
Science & Technology
Physical Sciences
Chemistry, Multidisciplinary
Chemistry, Physical
Persistent link to this record
Citation
Dou, Y; Tian, D; Sun, Z; Liu, Q; Zhang, N; Kim, JH; Jiang, L; Dou, SX, Fish gill inspired crossflow for efficient and continuous collection of spilled oil, ACS Nano, 2017, 11 (3), pp. 2477-2485