Fully Polymeric Distillation Unit Based on Polypropylene Hollow Fibers

Continuous polycrystalline zeolitic imidazolate framework-90 membranes on polymeric hollow fibers.

Headed for a membrane: Continuous, polycrystalline ZIF-90 membranes (picture, left) can be grown at 65 °C from methanolic precursor solutions on nanocrystal-seeded surfaces of poly(amide-imide) macroporous hollow fibers (right). The ZIF-90 membranes exhibit good separation properties for linear over cyclic hydrocarbons, as well as gas permeation selectivities higher than Knudsen values.

In-fiber polarimeters based on hollow-core photonic bandgap fibers.

In-fiber polarimeters or polarization mode interferometers (PMIs) are fabricated by cascading two CO2-laser-induced in-fiber polarizers along a piece of hollow-core photonic bandgap fiber. Since the two interfering beams are the orthogonal polarizations of the fundamental mode, which are tightly confined to the core and have much lower loss than higher order modes, the PMIs can have either shor...

Performance improvement of PVDF hollow fiber-based membrane distillation process

Membrane Distillation with Porous Metal Hollow Fibers for the Concentration of Thermo-sensitive Solutions

Distillation Startup of Fully Thermally Coupled Distillation Columns: Theoretical Examinations

The fully thermally coupled distillation column offers an alternative to conventional distillation towers, with the possibility of savings in both energy and capital costs. This innovative and promising alternative provides the opportunity to separate a multicomponent mixture into fractions with high purities merely in one column. A lack of knowledge still exists when dealing with the startup o...