katchum
Harmless
Posts: 30
Registered: 10-10-2006
Member Is Offline
Mood: No Mood
|
|
Ultra pure H2O
Hi
Are therre any technochemistry tricks to make ultra pure water? Reverse osmosis isn't enough to get ultra pure water.
|
|
|
not_important
International Hazard
Posts: 3873
Registered: 21-7-2006
Member Is Offline
Mood: No Mood
|
|
There are a number, depending on the amounts and applications. Are you asking for a home lab method, historical methodes, or something that would be
used industrially today?
http://www.google.com/search?num=20&lr=&q=%22ultra+p...
|
|
|
12AX7
Post Harlot
Posts: 4803
Registered: 8-3-2005
Location: oscillating
Member Is Offline
Mood: informative
|
|
Brauer gives methods.
Tim
|
|
|
jack-sparrow
Hazard to Others
Posts: 130
Registered: 30-11-2005
Location: Ask Big Brother
Member Is Offline
Mood: ahoy!
|
|
distillation from KMnO4 and then filtration through a carbon matrix cartridge and finally through a ion exchange resin cartridge (both from a reverse
osmosis purification system)
I can get water below 0.1 mS conductivity.
|
|
|
not_important
International Hazard
Posts: 3873
Registered: 21-7-2006
Member Is Offline
Mood: No Mood
|
|
The KMnO4 distillation is the traditional way of removing organics and so on. Final distillation must be done using fused silica or tin plated
condensers, ordinary borosilicate glass leaches out too much.
Distillation seems to be less common these days; filtration, R.O., carbon filters or pervaporation to remove volatile organics,, corona discharge or
ozone to finish organics removal, ion exchange, and so on seem to be the processes on the higher volume routes.
|
|
|
katchum
Harmless
Posts: 30
Registered: 10-10-2006
Member Is Offline
Mood: No Mood
|
|
What is the most cheap process to do this? Like new technology that does this much cheaper. And why should we make ultra pure water in the first
place? Is it that important?
|
|
|
not_important
International Hazard
Posts: 3873
Registered: 21-7-2006
Member Is Offline
Mood: No Mood
|
|
| Quote: | Originally posted by katchum
What is the most cheap process to do this? Like new technology that does this much cheaper. And why should we make ultra pure water in the first
place? Is it that important? |
Cheapest depends on the feed water and the target requirements; like many simple questions there are a number of answers.
Why? Semiconductor manufacture, for one. Some research needs very pure water, other may only need low conductivity which can be slightly less pure
than the #1 stuff.
Try a Web search for "unltra pure water"
|
|
|
katchum
Harmless
Posts: 30
Registered: 10-10-2006
Member Is Offline
Mood: No Mood
|
|
Does anyone know what kind of doctoral research I could do about this topic? Just to get ideas...
|
|
|
--WonderWoman--
Harmless
Posts: 1
Registered: 27-11-2015
Member Is Offline
Mood: No Mood
|
|
Hi everyone!
Sorry for reopening such an old post, but I would like to know what do you currently think about the viability of obtaining ultra pure water (Milli-Q
like) in the lab.
Thank you so much everybody!
|
|
|
papaya
National Hazard
Posts: 615
Registered: 4-4-2013
Member Is Offline
Mood: reactive
|
|
Just an idea - electrolyze water to get H2 and O2, then recombine them to get pure H2O. Recombination can be done at low temps on the surface of Pt
catalyst! What do you think about this?
|
|
|
Morgan
International Hazard
Posts: 1694
Registered: 28-12-2010
Member Is Offline
Mood: No Mood
|
|
I remember reading about ultrapure water when I was toying with plate capacitors and various dielectrics.
High electrical permittivity of ultrapure water at the water-platinum interface.
http://www.ncbi.nlm.nih.gov/pubmed/25258452
|
|
|
Texium
|
Thread Moved
22-11-2023 at 19:56 |
![[*]](images/xpblue/default_icon.gif){kind=icon}
