Talk:Filtration

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Filtration vs. Filtering

This page discusses only chemical filtration. What about using other filters (optical, signal, software, etc?) Is it OK to use "filtration" for them too, or should one use "filtering" instead? Can we say "filtering" for chemical filtration?
Jorge Stolfi 00:46, 3 Dec 2004 (UTC)

Filtration is the term that scientists and engineers use, but a better disambiguation note would do not harm. However, we are not talking here about chemical filtration, but rather filtration as a physical operation in chemistry in chemical engineering and in industry in general. LouisBB 18:55, 2 December 2007 (UTC)[reply]

In my opinion, a disambiguation page would be useful, so that Wikipedia users could navigate more readily to the specific kind of filtration they want. This article could be renamed Filtration (solid-fluid) and linked to the disambiguation page.ChemE50 (talk) 18:04, 14 August 2009 (UTC)[reply]

There is already a good disambiguation page at Filter, that serves almost all of the requirements needed of a new filtration disambiguation page. Wouldn't it be easier to rewrite the first two lines of this article ("... for all other uses of the terms "filtration" and "filter", see Filter") and beef-up the existing disambiguation page? Wikiwayman (talk) 09:08, 17 August 2009 (UTC)[reply]

Filter efficiency and the word "further"

I removed the reference to "further" disadvantages, since no other disadvantages had been mentioned.

I also removed the comment about filter efficiency decreasing as solids are trapped. In fact that increases the filter's efficiency, defined as the percentage of solids removed, by decreasing the average size of a pore. The disadvantage is that as channels in the filter are plugged, the effective lumen is decreased and the resistance to flow goes up. CarlFink 11:45, 8 May 2007 (UTC)[reply]

Flow

The section on Flow is odd. It only refers to liquids, and says things that aren't true (or at least I don't know of a cite for liquids "mostly" flowing via gravity. And by its topic it should really be "propulsion" or something. I was expecting a discussion of crossflow vs. direct flow filtration.

Speaking of which, why is the illustration at the top of the relatively obscure crossflow filtration? CarlFink 11:48, 8 May 2007 (UTC)[reply]

I quite agree. I've edited and re-titled the Flow section today so that it makes more sense. I'm also doing some work on the crossflow filtration page, so the article will make more sense in that context.

Anyone want to draw a diagram of direct flow filtration? Wikiwayman (talk) 09:30, 17 July 2009 (UTC)[reply]

Filtration is a wide subject

More expertise is required on the subject. A new section is required for Filtration equipment or Filters, and a serious re-write to improve its quality standard. There is no need for the restriction to liquid filtration. LouisBB 18:55, 2 December 2007 (UTC)[reply]

Vandalism

Just looking at the history for this article, there has been a lot of garbage text thrown in; thankfully, several reverts have converted the article back into a more readable form. Does anyone have any insight why this article is such a target? Dagordon01 (talk) 01:37, 26 June 2008 (UTC)[reply]

A purely mechanical process?

The very opening of this article begins "Filtration is a mechanical or physical operation..." Is this genuinely true? This comes from a discussion on the Filter (aquarium) page where we are discussing biological filters. These use bacterial processes to remove ammonia from the water and are universally known as "filters" in this context. Most dictionaries I have consulted on this seem to talk vaguely above removing impurities with no indication of mechanisms involved. CrispMuncher (talk) 21:36, 14 December 2008 (UTC)[reply]

Filtration is a physical process, but commercially the term "filter" is used to describe devices that do more than just filter, as in the biofilter. I've added a bit to the introduction to make the distinction clear. Wikiwayman (talk) 08:21, 5 August 2009 (UTC)[reply]

References

I've had a look at the orphan reference on the page, and identified it as "Yang, S.T., "On the Permeability of Homogeneous Anisotropic Soils", Proc. 2nd Intern. Conf. on Soil. Mechanics, Rotterdam, 2, 1953, pp. 317-320." I haven't been able to read the work directly, but it is referred to in this work: Darcy's coefficient of permeability as symmetric tensor of second rank, Liakopoulos AC, Bulletin of the International Society of Scientific Hydrology (1965) Vol10 #3 pp. 41-48. Although interesting, I don't see what the permeability of soil has to do with filtration (as a process), so I've deleted it from the page. If anyone knows a missing link between the article and the reference, please add it to the page and link the reference appropriately. Wikiwayman (talk) 09:49, 11 August 2009 (UTC)[reply]

Baffle box

Baffle box might be mentioned here

91.182.235.144 (talk) 15:58, 25 November 2010 (UTC)[reply]