Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 6 of 6 for “"Pre-wetting"”.
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Interfacially polymerized thin film composite membranes on microporous polypropylene supports for reverse osmosis desalination
… flat film membrane were hydrophilized first by pre-wetting with acetone, then oxidized with chromic acid solution kept at 65 C. Next, the procedure to successfully coat the hydrophilized flat film membranes was implemented. Poly(ethyleneimine) (PEI) and isophthaloyl dichloride (IPD) were chosen …
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The modification of activated carbon cloth by alumina deposition
The impregnation of mesoporous carbon cloth with alumina has been studied. The most successful method of impregnation resulted from preparation of the alumina phase by a sol/gel route. This method involves a boehmite intermediate, and the heating environment for the thermal transition of boehmite …
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Solvent resistant microporous/nanoporous polymeric hollow fiber and flat film membranes and their applications
… Before carrying out IP, PP was hydrophilized by pre-wetting with acetone and treating with hot chromic acid solution. The introduced procedure of "modified IP" involved wetting next with the aqueous monomer solution followed by the organic monomer solution. Nanofiltration membranes were …
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Solid-liquid mass transfer in trickle bed reactors
… Multiple hydrodynamic states are often presented in the form of hysteresis loops where the hydrodynamic parameter studied are shown as a function of the operating history of the bed, i.e. liquid and gas flow rates. In extreme cases the lower leg, representing an increase in liquid flow …
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Effect of Surface Moisture Condition on Substrate-Repair Concrete Overlay Transition Zone
… and substrate moisture condition. The work presented in this thesis is dedicated to understanding the effect of substrate moisture condition on the overlay transition zone (OTZ) of the substrate-repair concrete. The substrate moisture condition can significantly impact the microstructure …
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Development of a New High Performance Cold Mix Asphalt
… was used as a replacement for the aggregate pre-wetting water in the CBEM. CCR played a vital role activating the SSFA by breaking the glassy phases of the non-amorphous silica in the SSFA, while the waste calcium hydroxide solution increased the hydraulic reactivity of the cementitious …