desalination – Page 2 – TechConnect Briefs

Cellulose Acetate Nanocomposite Membranes for Water Desalination Applications

Ramadan A.R., Esawi A.M.K., El Badawi N., Mahmoud M., The American University in Cairo, EG

Interest in the use of membranes in water desalination applications has been increasingly developing due to their numerous advantages. Among the various desalination technologies, ‎Reverse Osmosis (RO) membrane processes are steadily becoming more reliable and [...]

New Nanostructures as novel electrodes in Capacitive deionization desalination Technology

Barakat N.A.M., Chonbuk National University, KR

Among the various introduced technologies for water desalination, capacitive deionization (CDI) is a very promising process. CDI (also called Electrosorption) attracted enormous attention as an energy-saving and environmentally friendly desalination technique, because it can be [...]

New Nanostructures as novel electrodes in Capacitive deionization desalination Technology

Barakat N.A.M., Chonbuk National University, KR

Among the various introduced technologies for water desalination, capacitive deionization (CDI) is a very promising process. CDI (also called Electrosorption) attracted enormous attention as an energy-saving and environmentally friendly desalination technique, because it can be [...]

Computer modeling of water and salt transport in RO membrane active layers

Pitera J.W., Na Y.-H., Vora A., Dubois G., IBM Research, US

As part of a combined computational and experimental effort to develop new reverse osmosis desalination membrane materials, we have carried out detailed equilibrium and nonequilibrium molecular dynamics simulations of the aromatic polyamide active layers of [...]

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 [...]