Separation of dispesed oil using fiber bed coalescer

Secerov-Sokolovic, R.; Govedarica, Dragan; Sokolović, Dunja S.; Sokolović, Slobodan M.

doi:10.5937/zasmat1403259s

Cited by 1 publication

(1 citation statement)

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“…4,18 It is worth noting that all the micrometer-sized water droplets can be effectively separated even the sizes of droplets are smaller than the pore size of FIBER aerogels. This phenomenon can be explained that the separation process for the FIBER aerogels is on the basis of the coalescence separation rather than the size-sieving surface filtration, which intercepts the emulsified droplets by the coalescence of droplets in the numerous tortuous micro-channels; [40][41][42] thus, the FIBER aerogels are expected to achieve higher separation fluxes under low driven-pressure. However, in that case the flux quickly decreased upon the running time, with a small saturated extent of 1132 ± 140 kg m -2 .…”

Section: Resultsmentioning

confidence: 99%

Superelastic and Superhydrophobic Nanofiber-Assembled Cellular Aerogels for Effective Separation of Oil/Water Emulsions

et al. 2015

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Many applications proposed for functional nanofibers require their assembly into a monolithic cellular structure. The ability to maintain structural integrity upon large deformation is essential to ensure a macroscopic cellular material that functions reliably. However, it remains a great challenge to achieve high elasticity in three-dimensional (3D) nanofibrous networks. Here, we report a strategy to create fibrous, isotropically bonded elastic reconstructed (FIBER) aerogels with a hierarchical cellular structure and superelasticity by combining electrospun nanofibers and the freeze-shaping technique. Our approach allows the intrinsically lamellar deposited electrospun nanofibers to assemble into elastic bulk aerogels with tunable porous structure and wettability on a large scale. The resulting FIBER aerogels exhibit the integrated properties of ultralow density (<30 mg cm(-3)), rapid recovery from 80% compression strain, superhydrophobic-superoleophilic wettability, and high pore tortuosity. More interestingly, the FIBER aerogels can effectively separate surfactant-stabilized water-in-oil emulsions, solely using gravity, with high flux (maximum of 8140 ± 220 L m(-2) h(-1)) and high separation efficiency, which match well with the requirements for treating the real emulsions. The synthesis of FIBER aerogels also provides a versatile platform for exploring the applications of nanofibers in a self-supporting, structurally adaptive, and 3D macroscopic form.

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