asteroza + desalination   51

Direct electrosynthesis of sodium hydroxide and hydrochloric acid from brine streams | Nature Catalysis
recycling output brine from desalination plants to make sodium hydroxide in bulk. Apparently desal plants normally have to buy it to adjust input salinities, so producing it's own makes some sense...
sodium  hydroxide  direct  electrosynthesis  desalination  plant  seawater  brine  effluent 
february 2019 by asteroza
The optical duality of tellurium nanoparticles for broadband solar energy harvesting and efficient photothermal conversion | Science Advances
Putting the tellurium nanoparticles directly in the water sounds like a bad plan for an industrial process, but this might lead to a better solid absorber for a thermal receiver?
tellurium  nanoparticle  broadband  solar  absorber  materials  science  research  technology  nanophotonic  photothermal  water  evaporation  seawaer  thermal  desalination  distillation 
august 2018 by asteroza
Sounds like the first serious non-research commercial shore based OTEC plant will be in the Maldives...
Maldives  OTEC  SWAC  desalination  Delicious 
october 2016 by asteroza
Sundrop Farms
Solar thermal power running a desal rig to run a greenhouse fed by seawater. Upgraded version of a seawater evaporation drafted greenhouse.
australia  solar  seawater  greenhouse  hydroponics  desalination  thermal  power  generator  CSP  agriculture  farm  tomato  Delicious 
october 2016 by asteroza
Interesting use of a linear piston motion of a wave power buoy to drive a mechanically driven high pressure seawater pump for a reverse osmosis water desalination rig. RO requires high pressure, which typically requires a lot of electric power for a electric pump, but by using gradual pressure building using a wave driven seawater pump, you can achieve equivalent pressures. Potentially convenient for small island resorts that have very little electrical power. But the long water pipe is a bit of a problem. If it were me, I would use the wave buoy to send pressurized seawaater directly via pipe to a beach building with the RO rig and a pressure accumulator tank, since that keeps the more finicky parts out of the water.
wave  power  generator  buoy  high  pressure  reverse  osmosis  water  desalination  mechanical  pump  ocean  marine  engineering  seawater  Delicious 
december 2014 by asteroza
Composites for Seawater Desalination - Press Release 4 October 2012
Near composite piping suitable for low temperature heat exchanger evaporators for desalination. Applicable to OTEC for shell and tube type heat exchangers, rather than Heatric type printed heat exchangers, as the tubes could be built this way coupled with an outer carbon fiber pressure shell to make a highly corrosion resistant heat exchanger for seawater exposure
copper  microfiber  polymer  composite  tube  tubing  heat  transfer  materials  science  research  technology  desalination  exchanger  thermal  shell-and-tube  evaporator  OTEC  Delicious 
october 2012 by asteroza
Carnegie Wave Energy
Nice part of this is that it basically is a submerged buoy actuated seawater pump, sending high pressure seawater ashore to a turbine station on land, keeping the electrical bits dry. Water pressure can be used directly for desalination as well.
CETO  wave  power  generator  green  energy  reciprocating  hydraulic  seawater  ocean  Water  pump  buoy  desalination  high  pressure  marine  structures  point  absorber  Delicious 
december 2011 by asteroza
Solar pond tower for 5 €ct/kWh - GreenIdeaLive
Interesting tricks here, using outlet air temps to provide condensation water to potentially feed a water turbine down blow, desalination, and possibly a downdraft tower as well.
solar  Pond  tower  power  generator  green  energy  hurricane  updraft  chimney  heat  storage  salt  Water  saltwater  lake  wind  turbine  desalination  Delicious 
october 2011 by asteroza
Seadov Pty Ltd - sea water desalination renewable energy vessel
Crazy plan to desalinate water offshore in a tanker powered by renewable energy, and sell it to coastal cities in Australia. A mobile water plant, so if a city doesn't pay up, you can leave to go feed another market.
Australia  offshore  wind  current  water  turbine  power  generator  tanker  desalination  ship  vessel  Delicious 
july 2011 by asteroza
JAW201005current.pdf (application/pdf Object)
Weird inflatable pyramids used as dual purpose saline water solar desalinators and rainwater collectors.
WaterPyramid  solar  seawater  saline  water  desalination  inflatable  structure  cone  pyramid  rainwater  collection  green  energy  sustainability  filetype:pdf  media:document  Delicious 
june 2011 by asteroza
Home - memsys
These guys made a cargo container system, that carries all it needs to do solar thermal seawater desalination, including the solar thermal arrays!
memsys  thermal  membrane  separation  separator  solar  seawater  water  desalination  chemical  processing  technology  materials  science  vacuum  effect  distillation  purification  Delicious 
april 2011 by asteroza
Biwater AEWT - Desalination Ship
Somebody else trying to get into the offshore bulk desalination game...
offshore  seawater  desalination  ship  vessel  structure  marine  ocean  water  Delicious 
june 2010 by asteroza
Nanotechnology: Dais Analytic
Claim serious improvements to molecular diffusion desalination systems, with inherent antifouling properties
molecular  diffusion  desalination  polymer  resin  filtration  nanotechnology  materials  science  research  technology  antifouling  Delicious 
june 2010 by asteroza
Saltworks Technologies | Desalination
Using assorted tricks for efficiency, such as a side evaporator using waste heat or low temp solar thermal to provide hypersaline brine for the main process, and various ion barriers to deprive the hypersaline brine of specific ions for specific flows, then reversing the ion barrier types (which causes the deprived brine to reacquire the ions from the main input seawater, which desalinates it), these guys claim lower power consumption (well, electric at least)
Saltworks  thermo-ionic  seawater  desalination  waste  heat  solar  thermal  evaporator  hypersaline  brine  Water  green  Delicious 
june 2010 by asteroza
ScienceDirect - Desalination : Extraction of strategic materials from the concentrated brine rejected by integrated nuclear desalination systems
Research into nuclear desalination reject brine mineral recovery process chains has interesting implications for other scenarios where you have lots of high mineral content brines that have commercial or strategic value
nuclear  seawater  desalination  concentrated  brine  mineral  extraction  harvesting  recovery  process  research  Delicious 
may 2010 by asteroza
Hold the salt: UCLA engineers develop revolutionary new desalination membrane / UCLA Newsroom
Interesting use of plasma treatment to make a microscopic polymer brush/fiber layer to sweep the desalination membrane surface as a physical approach to membrane maintenance (as opposed to typical chemical cleaning or flushing by reverse flow). Since this is an atmospheric pressure plasma treatment, I wonder if this could be applied as a form of antifouling treatment for fixed marine/ocean structures, such as barges, piers, oil rigs, and other structures where drag isn't much of an issue...
desalination  membrane  surface  plasma  treatment  topography  polymer  brush  layer  antifouling  freshwater  water  production  materials  science  research  technology  ocean  marine  structure  protection  saltwater  Delicious 
april 2010 by asteroza
WATER STANDARD - A Global Water Solution in Partnership with Nature
Using mobile offshore desalination plants for freshwater production. If the city doesn't want to pay anymore, you up and leave...
offshore  seawater  desalination  freshwater  water  production  tanker  mobile  ship  Delicious 
march 2010 by asteroza

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