Papers – Page 2 – TechConnect Briefs

Enhanced RO Performance of Polyamide Bi-layer Membranes Prepared by Sequential Interfacial Polymerization

Na Y.-H., Nassar M., Diep J., Davis B., Vora A., Dubois G., Al-Rasheed R., Nassar M., Geise G., Freeman B., IBM Almaden Research Center, US

We have developed polyamide bi-layer thin film composite membranes to enhance RO-desalination performance. The polyamide bi-lyer membrane consists of conventional non-substituted aromatic polyamide under-layer and HFA-substituted aromatic polyamide top-layer, which can be esaily prepared by [...]

CNT-polyamide nanocomposite membranes for gas and water separations

Marand E., Surapathi A., Chan W.F., Chen D., Chen H., Chen D., Chen H., Shao X., Johnson J.K., Virginia Polytechnic Institute and State University, US

We have developed asymmetric carbon nanotube/polyamide membranes for desalination applications. The carbon nanotubes are functionalized with zwitterionic groups that control the rejection of anionic species, while permitting the transport of water. Water flux measurements demonstrate [...]

Advanced RO Membrane Technology Based on Scientific Research for Seawater and Brackish water Desalination

Kimura M., Sasaki T., Henmi M., Toray Industries,Inc., JP

RO membrane technologies have made great progress in last 50 years. In seawater and brackish water desalination field, both energy saving and water quality improvement have been two major subjects. Advanced membranes are still demanded [...]

Sulfated chitosan (SCS)/polysulfone (PS) composite nanofiltration membrane surface cross-linked by Epichlorohydrin

Miao J., Xie Z.H., Chen G.H., Edith Cowan University, AU

A series of composite nanofiltration membranes were prepared via a method of coating and cross-linking from sulfated chitosan (SCS) as the material of the active layer, Polysulfone (PS) UF membrane as the base membrane, and [...]

Structural and Thermo-Mechanical Characterization of Calcium and Barium Alginate Films

Vidal-Urquiza T.K., University of Puerto Rico, PR

Alignate films require its precise characterization of mechanical and thermo-mechanial properties, which are useful for several potential applications in environmental protection, biotechnology, and others areas. Therefore, this work study the aforementioned film properties of sodium [...]

A Novel Technique for Removing Finely Dispersed Particles from Tailings

Ware W., Ashcraft N., Soane D., Soane Energy, US

Traditional oil, gas, and mining industries rely heavily on the use of water as a means to aid in the recovery of natural resources. Often times these activities, either through mechanical shear or chemical additives, [...]

Analysis the optimal damper angle for a furnace to reduce the energy cost and CO2 emission

Jou C.-J.G., Kaohsiung First University of Science and Technology, TW

Optimal values for conducting a full-scale plant operation are usually obtained based on experience without the support of theoretical quantitative analyses. In this research, the Grey Relational Analysis method is implemented to develop a model [...]

Rapid Hydrate Formation, A Process for Transport and Storage of Natural Gas

Taylor C.E., Brown T., Unione A., U.S. Department of Energy, US

Experimental results from the Na¬tional Energy Technology Laboratory (NETL) show that rapid and continu¬ous formation of methane hydrate, as well as other gas-derived hydrates is achievable. The goal of this technology is to pro¬vide a [...]

The Retention of Silica Nanoparticles at Oil/Water Interface

Metin C.O., Nguyen Q.P., The University of Texas at Austin, US

We investigate the retention of silica nanoparticles at water/crude oil interface. Silica nanoparticles with three different surfaces (unmodified, surface modified with anionic (sulfonate), or nonionic (PEG) surfactant) are used. Interfacial tension (IFT) measurements provide us [...]

Application of Salts Free of Chlorine as Inhibitors of Clays in Aqueous Drilling Fluids

Lucena D.V., Borges P.R., Amorim L.V., Lira H.L., UniversidadeFederal de Campina Grande, BR

At present, concern with the environment damage and the costs involved in the disposing of contaminated cuttings have led to find drilling fluids water based, but during the well drilling it is common the presence [...]