what is desalination?
594409
It's the removal of salt from water.  A desalination plant removes salt from water for people to use - usually through reverse osmosis.
461944
Evaporation is a natural cooling process for the human body.  As something on the skin evaporates, it draws the heat away from that site.  The faster something evaporates, the more heat it draws away, and the greater the sensation of being cold.  And alcohol evaporates very fast even at normal temperatures, therefor, it removes large amounts of heat.
256594
Reverse osmosis with pressure to overcome osmotic pressure.
657178
I don't want ot come across as a kn*b or anything but what do you mean - for use in what way? There are desalination plants that turn salt water in fresh water, marine life tends to prefer salt water...\n\nFlippantly (which no doubt will get me no points) all water is immediately available for use.
739985
the water is relesed as vapor from the liquid when the liquid is heated. Water changes phase and becomes gas, its called evaporation.
993835
How about something dealing with providing potable water or water purification... that's a heck of a subject and there should be tons of information about it on the Internet.  Besides... with the fact that drinkable water is becoming harder to obtain and the costs are going up to provide that commodity, water science will be a real 'Biggie' in the near future.
759605
Osmosis is a type of diffusion that relates directly to water passing the cell membrane. Diffusion is particle movement down the concentration gradient or to an area of less concentration of any substance
626745
True. water is essential for the transport of nutrients within them, since it is the "universal solvent".
864649
Solute is anything tht is disolved in the liquid. If there was no solute, all you'd have is distilled water.
498851
There are all sorts of salts.\nIn common usage, 'salt' refers to sodium chloride. Table salt is refined sodium chloride together with various additives, e.g. anti-caking agents, iodides, etc.\nMarine/sea salt is sodium chloride from the solar evaporation of sea water. It contains associated impurities such as calcium sulphate and magnesium chloride.\nWhen I did a Google search with the term "sea salt"+"marine salt" most of the references were to do with products for marine aquariums, so I think that the phrase 'marine salt' is used to describe stuff mostly intended for aquariums whilst the term 'sea salt' is for human consumption. If this is the case then I would expect 'sea salt' to be more strictly controlled as far as imputities are concerned.
1086630
Do you mean demineralized water?\n\nReverse osmosis is the most economical way.\n\nCheck out millipore, look up their RO products.
245602
A desalination plant removes the sediments from sea water that make it undrinkable and convert it into fresh drinking water. The way it does this is through distillation and reverse osmosis. There are huge pumps involved and a desalination plant is quite huge. The first one according to my sources listed below was in the 1960's and they are even used in the U.S.
334569
a piece of glasswear that fits onto a reaction vessel that has cold water pumped round its outer shell so that hardly any water can escape but mearly condenses and falls back down.\n\nThis is normally the same people of glasswear u use for a distillation.
87965
We never get new water here on earth..it's just recycled. The water cycle defined is "Transition and movement of water involving evaporation, transpiration, condensation, precipitation, percolation, runoff, and storage."\n\nWater falls in the form of precipitation (snow, rain, etc). Some of it seeps into the ground that makes up our water aquifers (perculation), some is in the form of runoff (rivers, streams), eventually water makes its way to lakes, ponds, oceans, etc and is stored. Some water is taken up by plants and is stored there. It leaves "storage" when the water evaporates and through transpiration in plants (plants lose water through their leaves which is why they seem especially prone to wilting on a hot windy day).\n\nCondensation is when water goes from a gaseous state back to a liquid state. An example of this putting your breath on a cold window or mirror and watching the water droplets form.\n\nHope this helped. It's a simplified explanation, but it will get you started.
737067
Evaporation.\n\nSalt water + heat source + vessel. Apply heat source to vessel containing salt water. Evaporate water. Harvest salt.
164392
osmosis deals with the transfer of liquids (water) through a membrane.  say you have salt water in a tube with half the water separated by a osmotic membrane.  in an osmoticaly balanced state, the salinity is the same on both sides.  any solution will want to be at this balanced state.  if the salt concentration was higher on one side than the other, water would flow from the low to high concentration untill both salinities were equal
1155688
A special type of diffussion called osmosis.\n\nOsmosis is the net movement of only WATER molecules from a region of their higher concentration to a region of their lower concetration though a partially/selectively permeable membrane.  (cell membrane)