How long did the dump take?
The majority of it like 2 or 3 minutes
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Iām thinking a much taller stack of opaline silica is needed for effective treatment. Something like 6", maybe even 12"
I think it needs to be ground into a powder iām looking into the best way to do that and then iām gonna try again and see what happens?
I like the idea of using smaller granular sizes to increase surface area, however as @Photon_noir mentioned, similar size distribution matters to maintain flow rates
well iāll see what happens with the grind?
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Thats stating how much water is held up in the molecular structure of the mineral. This is water thats chemically bonded to the aluminosilicate molecule and not simply absorbed into the pores.
Hard to say whether thats indicative of the exact kind of mineral your looking at due to the fact that different companies label their shit a little different. One company may include any and all water content as a single number in their quantitative analysis whereas another company will list the moisture content separately from the chemically bound water. Shits confusing because weāre not from that industry, we dont know what half these niche terms mean.
That SDS was not for the media weāre looking for though, that was attapulgite from a mine in georgia under the same designation of āRVM 16/30ā. They do however sell hydrated aluminosilicate under the RVM 16/30 designation from the Taft mine in CA.
Also your questions arenāt dumb, weāre all learning more everyday!
AG_CARVM_1630tan.pdf (3.0 MB)
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Wow. This tangent thread has gone straight to the Mole People, apparently! Well beyond rabbit holesā¦
@ScoobyDoobie That is a completely erroneous speculation, and there is already plenty of confusion surrounding this from @J12ās posts about it not working for him. He didnāt dry it. It is not water soluble. The problem is that the Agsorb branded product is usually a tan or buff colored RVM Taft hydrated aluminosilicate, and the tan stuff does NOT work! It has to be white!
Also, the silica should be around 80% or more, alumina under 10%, water under 10%, iron under 2%, other under 3%. Mostly silica.
@destroytec Yes, I did say Taft mine, California, specifically.
@Curious_Roberto I did not say the whole serial number needed to match (just the TAF for Taft). The SDS is pretty useless for most materials to determine exact compositions, and the OilDri floor sweep is no exception. As we discussed, it just talks about the 3 different products they consider to be the same for that purpose.
@Dred_pirate is getting good results with the exact same stuff J12 did notā¦ whether he dried it or not, apparently, but it works better dry.
Please see the original thread for non-speculative information.
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That is exactly why I didnāt buy any to try to sell to everyone, I didnāt want anyone to waste money on something I was not sure of!
I donāt mind wasting a few of my own dollars to test something at all, but Iād hate to get something claim itās one thing and itās not.
I did dry it and it works wonderfully. I am using the amorphous silica RVM from the California Taft mine. I still use a small amount of T5 underneath it, very small. I still want to use it for its filtration purposes
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So iāve only done 2 tests so far. The second run i did i ground up the silica and then dried it. It seemed to work better. i had a fast crash and good yield but as far as color and taste it didnāt seem to work as well or better then B80. Maybe iām doing something wrong? Since the crc thread hit the scene Iāve run numerous tests with all kinds of the mediaās recommended and nothing works as well as B80. The only thing i was hoping for was a better terp profile with the Opaline but wasnāt very impressed by the outcome, but like i said I only did 2 runs one fresh frozen and one dry.
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J12,
You ran past the adsorbent in 2-3 minutes? I would try increasing your residence time in the column, perhaps with screens? 5 micron?
Second run i did with the ground up silica took about 25-30 mins to push through. So plenty of contact time. all my runs got from 5 micron to 2 in my opinion still not as good as b80.
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I seeā¦ Well, this seems to demonstrate a few reasons I never grind it up:
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The charge density differences between the interior and exterior (surface) are hypothetically the cause of the excellent color remediation. The granules act like polymer ion-exchange resin beads. The bulk granules (made mainly of a silicon oxide lattice doped with aluminum atoms) always remain more hydrated on the inside than on the outside, which has an activating effect on the outer surfaces, especially when those surfaces are dried (by vacuum baking). The greater the hydration differential, the better it works!
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Fine powders, unless their particle size distribution (PSD) is rather narrow (all particles are nearly the same size), tend to self-clog, causing the speed of liquid permeation to slow down to a crawlā¦ and you can never really get all the solute out, since it acts like a sponge, unless you rinse it repeatedly; the solvent deposits solute all over the surface area, causing poor yields.
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Powders cause chromatographic separation. This stuff is NOT supposed to be used for inline chromatography. It is purely an adsorbant.
Best of luck, @J12 !
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Right on. Thank you for the explanation
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Alas the opaline thread emerges from the great beyond.
Still never got ahold of itā¦dunno why everyone bailedā¦kinda lameā¦
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Makes sense, diff particle size wouldnāt load up the same right?
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Think about a box of raisin branā¦ or any breakfast cereal. Tasty, right? Well, yeah, but what happens when you shake it a bit? The cereal will settle according to particle size! And even when you just pour some in your bowl, you can see the smaller pieces filling in the gaps that the larger particles leave between each other!
It is the latter phenomenon that causes self-clogging. Imagine a big glass vase filled with golf balls. Plenty of gaps! Plenty of spaces for liquid to flow around! Now pour in some necklace beadsā¦ smaller gaps, but still plenty of flow paths for a liquid. Now fill it with sand. Far smaller gaps = far slower (more tortuous) flow paths.
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