posted on 2015-09-02, 00:00authored byGary J. Dunderdale, Chihiro Urata, Tomoya Sato, Matt W. England, Atsushi Hozumi
We report a novel oil/water separation
device, allowing continuous, high-speed, and highly efficient purification
of large volumes of oily water. This device uses a pair of hydrophilic/hydrophobic
polymer-brush-functionalized stainless steel meshes, which have antagonistic
wetting properties, i.e., superoleophobic and superhydrophobic properties,
when submerged in the opposite liquid phase. This device can purify
large volumes of n-hexadecane/water mixture (∼1000
L) in a continuous process rather than in batches, to high purities
(∼99.9% mol/mol) at high flow rates (∼5 mL s–1 cm–2), unlike the oil/water separation meshes
reported so far.