Ultra- and nanofiltrations are utilized for the separation of polymers proteins. In this study, we have investigated application MgAl2O4 membrane produced by aerosol deposition (AD) method a polymer. A ultrafiltration on porous Al2O3 support layer was with intentionally leaving nano-sized pores instead completely dense membrane. The filtration performance removing 1 million molecular-weight pol...

The wetting behavior of droplets aqueous surfactant solutions over hydrophobic thin PVDF porous membrane and non-porous film is investigated for small (~10 μL) trisiloxane solutions: superspreader S 240. time dependencies contact angle, droplet radius, wetted area volume were monitored as well penetration into the substrate. It shown that fast spreading takes place both in case substrates at a ...

Membrane filtration fouling has become a significant issue that restricts its wide application. The electrocoagulation (EC) technique combines variety of synergistic pollutant removal technologies (including flocculation, redox, and air flotation), which can be an ideal pretreatment process for membrane filtration. In this work, novel Cu2+-doped polypyrrole-coated stainless steel mesh (Cu/PPy–S...

A capillary-driven root module design for growing plants in microgravity is presented. Matrix-based root modules have been developed for conditions of microgravity which require active pumping or an elaborate control system to operate. The capillary-driven system is passive and relies on root uptake to develop the necessary gradient within the media to operate the liquid control valve. A collap...

This study evaluated the clinical, radiographic, and histologic response to the composite use of Bio-Oss porous bone mineral and autogenous bone in combination with a Bio-Gide bilayer collagen membrane to achieve regeneration when treating human periodontal bone defects. Preoperative recordings for four treatment areas included radiographs, clinical probing depths, and attachment levels; these ...

Dense SrZr0.95Y0.05O3 a and SrCe0.95Yb0.05O3 a thin films with perovskite structure were prepared on porous SrZr0.95Y0.05O3 a substrates by spin coating colloidal suspensions of powders prepared by combustion methods. Porous substrates were prepared by treating carbon/SrZr0.95Y0.05O3 a composites in air at 1273–1573 K in order to combust the carbon and partially sinter the resulting porous oxid...

A membrane biofilter is used to biodegrade toluene in the gas phase. Active microorganisms are immobilized on the outside of a hollow fiber membrane cartridge and air containing toluene as the contaminant is passed through the membrane fibers. A porous polysulfone membrane containing water in the pore is used through which both toluene and oxygen are diffused to the biofilm attached to the outs...

Pressure retarded osmosis (PRO) has the potential to produce clean, renewable energy from natural salinity gradients. However, membrane fouling can lead to diminished water flux productivity, thus reducing the extractable energy. This study investigates organic fouling and osmotic backwash cleaning in PRO and the resulting impact on projected power generation. Fabricated thin-film composite mem...

Fast and effective protein digestion is a vital process for mass spectrometry (MS) based protein analysis. This study introduces a porous polymer membrane enzyme reactor (PPMER) coupled to nanoflow liquid chromatography-tandem MS (nLC-ESI-MS/MS) for on-line digestion and analysis of proteins. Poly (styrene-co-maleic anhydride) (PS-co-MAn) was fabricated by the breath figure method to make a por...