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Water + Salt + Energy = Clean!
codesmith.ca writes "CTV News is reporting about a device built at the Russian Institute for Medical Engineering that can convert standard water and salt into an antimicrobial solution. Apparently it's works on almost anything (virii, bacteria, cysts...) and it's safe for human consumption to boot. I can't find a site for the institute, but there are articles around. This one is fairly detailed, but hard to reach. Here's the Google cache. Here's one about a paper shows it's not exactly super-new technology." Any chemist care to comment on what sounds to be too good to be true?
I can convert beer into a water and salts solution! What do I get?
cool
;)
:)
does this mean that windows machines will be virus free from now on??
I guarentee you that if you pour the solution into your computer, it will be free of viruses from now on. Should work on any operating system
OK Disclaimer-- don't try this at home, or if you do, don't complain to me
LedgerSMB: Open source Accounting/ERP
Using electricity, it splits table salt (NaCl) into Na+ and Cl- ions, and you get chlorinated, swimming pool water. And the Na+ is recycled by recombining with Cl- and all you ever add is salt. I saw one of these units on "This Old House," for a swimming pool. Bottom line: never add chlorine, just salt and electricity.
The biggest trick the devil pulled was letting lawyers become politicians so they can write the laws.
Here's a report summary I found on the technology from the Foundation for Water Research. It's not all that and a bag of chips.
http://www.fwr.org/wrcsa/832100.htm
No rocket science here, don't understand why something as simple as the electrolysis of brine makes in on Slashdot ...
...
... as expected, Cl- -> Cl2 ... but the trick
here is that the formed chlorine reacts with water
and even better with the NaOH that diffuses from
the cathode to form ... bleach (hypochlorite that is) ! ... "The anolyte has powerful bactericidal characteristics and is effective in the control of harmful organisms like bacteria, viruses, cysts, and germs."
:-)
Freshman chemistry tells you:
NaCl -> Na+ + Cl-
H2O -> H+ + HO- (actually H3O+ instead of H+ but that's details)
Then, you add some electricity and you get:
At cathode (- electrode), H+ -> H2 (bubbles out) which means a lot of Na+ and HO- are left floating around - thus, per Google cached article in the original post: "The catholyte is a powerful alkaline solution used for [...]" -- not surprising at all, as you can see
Then, at anode (+ electrode) you've got HO- and Cl-
Cl2 + NaOH -> NaCl + NaClO
Now what does the article say?
Damn that highschool chem
END-OF-CHEM-LESSON
This is an experiment I did in elementary school.
It's called electrolysis. You separate salt water into
Use enough voltage, and maybe you bump oxygen to ozone, a superoxidizer (see above).
None of this takes any kind of chemist to see.
Note also that these chemicals are extremely hazardous in their uncombined forms. Remember Apollo 1 and its pure oxygen atmosphere at full sea-level pressure? Skin catches fire almost explosively in that sort of atmosphere - it's truly horrible what pure oxygen can do. Combine hydrogen and oxygen in the right proportions and they will explode. Sodium is poison and explosive when combined with water. Chlorine is poision.
Some of the more recent explorations into silver as a disinfectant with good tolerance in the body might be more profitable to follow, but also have snake-oil potential because too few people recognize that as another century-old technology that has a mass-market application in swimming pools today.
Were I you guys, I'd kill the story.
Bruce
Bruce Perens.
The reaction isn't, as some have said:
NaCl + 2H20 + electricity -> Na + Cl + 2H2 + O2
Rather, you get a hypochlorous acid ion, an a sodium hydroxide ion. In effect, the reverse of mixing hypochlorous acid and lye.
However, you get it in VERY dilute quantities, nowhere near what you'd need to damage human skin. But if you are an itty bitty microbe, the oxidizing effect is deadly.
Really, this is just a "bleach on demand" sort of thing.
www.eFax.com are spammers
Oh the pain! The people complaining about the state of science education in the US are RIGHT!!
Electrolysis of salt solution produces a solution of sodium hypochlorite, similar to Clorox bleach. Nothing wrong with that, this is a GREAT disinfectant. But new technology? I DON'T THINK SO. We have been chlorinating water supplies since 1908 or so.
Some technological historians believe that the addition of chlorine to drinking water is the primary reason for increased life expectancies in the 20th century, and claim that this one innovation has done more to prevent disease than the rest of modern medicine combined.
Here are the reactions:
anode: 2Cl- = Cl2(aq) + 2e-
cathode: 2e- + 2Na+ + 2H20 = H2(g) + 2NaOH
2NaOH + Cl2 = 2NaOCl + 2H+
To stabilize the NaOCl it is best to add a bit extra NaOH. (See LeChatlier).
You can use the H2 to power your laptop. (See fuel cells.)
Unfortunately, some of the things Bruce has stated are not entirely accurate. The general facts are correct. but some bits need modification.
Hydrogen is reactive. It's only 'highly' reactive if you haven't played with really reactive stuff, like fluorine, chlorine and, er, oxygen. Potasium is fun too.. (I have only seen Cesium once. That's quite enough).
Skin only catches fire if you get it very hot. An uncontrolled fire in a pure oxygen atmosphere is more likely to vaporize the skin; then the fat underneath will start to burn. Pure oxygen at reasonable (3atm) pressure will not cause spontaneous combustion of people. But if a fire starts in that environment, then you won't be able to put it out. The fire in Apollo 1 was not spontaneous. It was started by an electrical fault. The three astronauts suffocated in flame. Not nice.
You can happily mix hydrogen and oxygen in a 2:1 ratio. You can pressurize the mixture to astonishing levels. If there's a lot less oxygen, you can breathe the mixture for days at a time (google for "deep hydrogen diving"). If you make a spark, then you'll understand just how reactive oxygen is. The lesson learnt will be very short, and terminally instructive.
But hydrogen and oxygen are not hypergolic. Ask a rocket scientist. Even the Space Shuttle needs a match to get it going.
Sodium is a disinfectant. In the same way that a raging forest fire is disinfectant. Kids! treating your grazed knees with sodium metal may sting! Also, your parent's lawyers will have to contend with a stupidity counter-claim.
Oxidizing agents and reducing agents are defined by their ability to grab or release electrons.
If you want to understand this stuff, find somebody who knows what "Gibb's free energy" is about. Then, get them to explain it to me...
Here's the page on colloidal silver at Quackwatch. Apparently the stuff can turn you permanently gray anywhere you're naturally light--skin, whites of the eyes, some of your insides (lungs? fat?) etc. And, the producers are big on hype, not so interested in rigorous testing or even keeping microorganisms out of their medicine bottles. See also this FDA site. As for a conspiracy preventing effective medicines from reaching the consumer, isn't it obvious that researchers, pharmaceutical company stockholders, scientists, and doctors are all ALSO consumers? They and their families are just as likely to get cancer or heart disease as you are. Think they'll suppress something that could cure their kid of leukemia so that the company can profit? Give me a break.
Using electricity, it splits table salt (NaCl) into Na+ and Cl- ions, and you get chlorinated, swimming pool water. And the Na+ is recycled by recombining with Cl- and all you ever add is salt
...
...
A while ago I read Neal Stephenson's Zodiac, which mentions chlorene. This post rang a bell, so I dug it up and pawed through it to find what it had to say. The book only tells you about the situation in bits and pieces, so this really took some searching:
Ionic chlorene's easy to get. It's in seawater. If you want to manufacture a whole catalog of industrial chemicals, you have to convert ionic chlorine into the covalent variety. You do that by subtracting an electron.
And it's just about that simple. You take a tank of seawater and you put a couple of bare wires into it. You hook up a source of electrical power up between the wires, and current - a stream of electrons - flows through the water. The molecules get rearranged. The ionic chlorine turns into the covalent kind, which is what you want. The sodium joins up with fractured water molecules to form sodium hydroxide. Or lye and alkali, depending on how educated you are.
If you're an engineer, and you're not very bright, it's easy to love polychlorinated biphenyls. They are cheap, stable, and easy to make and they take heat very well. That's why they end up in heat exchangers and electrical transformers. It's how they got into that machine in Japan and, when the pipes started to leak, it's how they got into a lot of rice oil.
Unfortunately, rice oil is for human consumption, and as soon as humans enter the equation, PCBs no longer look very good. The problem with humans is that they have a lot of fat in their bodies, and PCBs have this vicious affinity for fat. They dissolve themselves in human fat cells and they never leave. They are studded with loose chlorine atoms that know how to break up chromosomes. So when that heat exchanger started leaking, the city of Kusho, Japan started to look like the site of a Biblical plague. Newborn babies came out undersized and dark brown. People started to waste away. They developed a fairly disgusting skin rash called chloracne and felt very sick.
A benzene ring is a six-pack of carbon atoms. The six-pack is held together. It's stable. It's strong. It takes some effort to pull one of the atoms off. There are a couple different kinds. If you put two six-packs together, you have a twelve-pack. THe six-packs are phenyls, a twelve-pack is a biphenyl. If the six-packs are benzenes, it's a dibenzodioxin, because the connection between the six-packs is made by using a couple of oxygen atoms. But the toxic part of polychlorinated dibenzodioxin (PCDDs) and polychlorinated biphenyls (PCBs) is the chlorine.
The biphenyl or dibenzodioxin structure dissolves easily in fat. Once it gets into your body fat, it never leaves.
The second bad thing is, the chlorine there is in covalent form; it's got the normal number of electrons, whereas the chlorine in (safe) table salt is in ionic form. It's got an extra electron. The difference is that covalent chlorine is more reactive; it has these big electron clouds that can f*** up your chromosomes. And it slips right through your cell membranes. Ionic chlorine ddoesn't - the cell membranes are made to stop it.
In Stephenson's book, this guy Sangamon Taylor runs around trying to take down corporations that electrocute seawater to create PCBs, use the PCBs as coolant, then dump them into Boston harbor. Stephenson makes it seem like the root of all evil is zapping salt water, because it produces organic chlorine. So I would be very, very careful about intentionally electrocuting salt water and then swimming in it.
It seems like there must be something more to this if, as you said, "This Old House" recommended the process. Maybe it works differently with plain salt water as opposed to sea water. Or something. Scares the crap out of me, though. Maybe someone smarter can tell me what I'm talking about?
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