http://www.che.com Chemical Engineering en-us 2013 Wed, 22 May 2013 19:08:39 EDT Capacitive desalination, in which salt ions are electrically removed from saltwater, has been researched for decades as a potentially cheaper alternative to energy-intensive reverse osmosis (RO) and distillation, but so far its application has been limited to waters with very low salt concentrations. A new... http://www.che.com/chementator/desalination/10372.html Mon, 1 Apr 2013 0:00:00 EDT A new hydraulically driven, positive-displacement-pump system can lower the energy requirements for pumping water by 10% in large seawater reverse osmosis (SWRO) desalination plants, where electricity typically represents the largest cost. Recently launched by GE Water & Power (www.ge-energy.com) at the... http://www.che.com/chementator/desalination/9636.html Sat, 1 Sep 2012 0:00:00 EDT A group of scientists from Fudan University (Shanghai, China; www.fudan.ac.cn) China, has reported what it claims to be the first example of artificial single-molecular water channels that can transport water across lipid membranes. Transmembrane water transport — through water channel proteins called... http://www.che.com/chementator/desalination/9449.html Sun, 1 Jul 2012 0:00:00 EDT A six-stage water treatment process involving electrocoagulation (EC) and multi-stage flash (MSF) distillation could improve options for the disposal of sludge and brine in applications that include the treatment of water from hydraulic fracturing of oil and gas wells (see also Frac Water Reuse, Chem. Eng.... http://www.che.com/chementator/desalination/9175.html Sun, 1 Apr 2012 0:00:00 EDT Researchers from the Dept. of Chemical Engineering, Monash University (Clayton, Victoria, Australia; www.monash.edu), have reported on a new composite polymer hydrogel with light-absorbing particles incorporated within it, that can be used as draw agents in the forward osmosis (FO) process of desalination... http://www.che.com/chementator/desalination/9023.html Thu, 1 Mar 2012 0:00:00 EST An alternative desalination process that reduces energy consumption by over 50% compared to best available technology (BAT) has been successfully piloted by the Industry Sector of Siemens AG (Munich, Germany; www.siemens.com), in collaboration with Singapores national water agency, PUB, and Singapores... http://www.che.com/chementator/desalination/8275.html Mon, 1 Aug 2011 0:00:00 EDT In June, the U.S. Environmental Protection Agency (EPA; Washington, D.C.; www.epa.gov) announced the winners of the 2011 Presidential Green Chemistry Challenge Awards. Winners of the Challenge, which promotes R&D of less hazardous alternatives to existing technologies that reduce or eliminate waste in... http://www.che.com/chementator/desalination/8278.html Mon, 1 Aug 2011 0:00:00 EDT Forward osmosis (FO) has been recognized as a valuable technology for many applications including wastewater reclamation, seawater desalination, and energy production, due to the low energy input required. The osmotic pressure gradient across a semipermeable FO membrane causes water to diffuse naturally... http://www.che.com/chementator/desalination/8282.html Mon, 1 Aug 2011 0:00:00 EDT By immobilizing carbon nanotubes (CNTs) within polymer membrane pores, scientists at the New Jersey Institute of Technology (NJIT; Newark, N.J.; www.njit.edu) were able to significantly improve the efficiency of desalination via a membrane distillation process. Somenath Mitra and colleagues at NJIT used a... http://www.che.com/chementator/desalination/7928.html Sun, 1 May 2011 0:00:00 EDT After a nine-month field demonstration at BTX, Inc.’s Sleepy well site in Indiana, Pa., Altela Inc.’s (Albuquerque, N.M.; www.altelainc.com) AltelaRain 4000 water desalination system has been shown to turn Marcellus Shale wastewater into distilled water. The demonstration, funded by the U.S... http://www.che.com/chementator/desalination/7936.html Sun, 1 May 2011 0:00:00 EDT