Papers – Page 21 – TechConnect Briefs

Nitrogen-doped porous carbon for the removal of Cr or As in aqueous solutions

Han J.S., Ha D.G., Han J.S., Kang S-H, Seoul National University, KR

The removal of hexavalent chromium and arsenic from aqueous solutions was investigated with nitrogen-doped porous carbon. Excellent adsorption behavior was obtained due to the strong attraction between [HCrO4]- or [H2AsO4]- and nitrogen sites under weak [...]

Preparation and characterization of porous polyethersulfone nanofiltrationmembranes via combined phase separation method for water desalination

Jahanbakhsh Asl H., Soltanieh M., Sharif University of Technology, IR

In this work combined thermally induced phase separation (TIPS) and nonsolvent induced phase separation (NIPS), were used to fabricate nanofiltration membranes for water desalination at low pressures. Polyethersulfone (PES) flat-sheet membranes were successfully prepared by [...]

Low-cost membranes for nanofiltration and reverse osmosis

Berland B., Huntley K., Misra M., ITN Energy Systems, US

ITN has developed a proprietary nanocomposite membrane that outperforms state of the art water filtration and purification membranes by combining the following attributes: • High Salt Rejection • High water flux at Low Pressure • [...]

Designing Ultrathin Film Composite Membranes: Importance of a Gutter Layer

Ponnuru K., Kattula M., Karampelas I., Wang T., Zhu L., Jia W., Lin H., Furlani E.P., SUNY-Buffalo, US

Membrane technology has been widely adopted for water purification and gas separation. Industrial membranes are often thin film composites comprised of a thin, dense skin layer (100 nm or below) performing molecular separation and a [...]

Measurement of O-phthallaldehyde (OPA) by High Pressure Liquid Chromatography (HPLC) with Post Column Derivatization

Watkins A.E., Butler T., Dees D., NASA - Stennis Space Center, US

O-phthaldehyde (OPA) is commonly used as a disinfectant that demonstrates microbicidal activity against a range of microorganisms. The Internal Active Thermal Control System (IATCS) is a water based system that helps facilitate heat transfer aboard [...]

Carbon Nanotube Immobilized Membranes for Next Generation Desalination

Roy S., Bhadra M., Mitra S., New Jersey Institute of Technology, US

The objective of this project is to utilize carbon nanotubes (CNTs) to create breakthrough membrane properties for the generation of pure water via membrane distillation (MD). This fundamentally new approach will reduce the cost and [...]

Conical, Floating Piston Isolation Valve

Farner B.R., NASA - Stennis Space Center, US

This valve consists of a hollow, moveable floating piston pressed against a stationary solid seat, and can use the working fluid or an external pressure source to seal the valve. This open/closed valve has a [...]

2-butoxyethanol as a Draw Solution for Forward Osmotic Application

Sano K., Ide T., Imada T., Toshiba Corporation, JP

As a draw solution, 2-butoxyethanol (2BE) was examined for forward osmotic application such as power generation and desalination. As forward osmosis experiments, simple hand made cell with a membrane of 5mm in diameter. Under stirring [...]

Biological Decontamination of Radionuclides in Industrial and Environmental Water Using a New Highly Radioresistant Microalga

Rivasseau C., de Gouvion Saint Cyr D., Atteia A., Gromova M., Farhi E., Commissariat à l’Energie Atomique, FR

Nuclear energy technologies generate radioactive and chemically toxic compounds including mainly carbon-14 and radioactive metals. Treatment processes rely on physico-chemical methods, which, though efficient and robust, do not completely remove carbon-14 and are not adapted [...]

Ag Nanoparticles as Low Emissivity Coating Materials for Window Glazing Applications

Gao T., Jelle B.P., Norwegian University of Science and Technology, NO

We communicate here the application of Ag nanoparticles as low-e coating materials, which may bridge the vast effort on the synthesis of metallic nanoparticles and the great potential of improving the energy feature of building [...]