T5 and alumina is an option without a centrifuge…
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To be clear, that worked for lead. I assume arsenic is also heavier than cannabinoids and would spin out, but have no idea
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how hard did you have to spin it?
are the details posted around here?
any point in Search results for 'isolate centrifuge lead' - Future4200 ?
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There are several posts to walk you through T5 and alumina.
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Hell ya. Thank you!
lead is 207g/mol
Arsenic 74.9g/mol
Thc 314g/mol
So says the web. Didn’t check on cbd.
Thc is in solution though
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CBD is about 315 g/mol…
But centrifugation is in fact a densimetric separation method. What matter are the relative densities of the objects you want to separate. Lead is about 20 times denser than water. Centrifugation just speeds up the naturally occuring sedimentation.
I can believe you could separate microscopic lead agregates using a classical centrifuge (let say up to 13 000 rpm with a large fixed rotor). But to extract well suspended nanoparticles of lead, I think an ultracentrifuge would be necessary. This is a much more expensive and dangerous tool.
Dealing with the other metals, out of tungsten and other heavy but rarer stuff, I don’t see centrifugation as an option.
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Agreed dr jebril. The densities will matter there instead of molecular weight. And this method doesn’t help any of the BHO extractions or thc distillations when I comes to arsenic or lead.
We had a couple soil grown flour samples fail for arsenic and I’ll be testing the concentrate for heavy metals this coming week. I will report the findings.
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There’s a group from Michigan that had arsenic and nickel. Nickel didn’t show up until crude.
I’ll see if they got labs back yet after crc.
The sketchy thing about contamination is ideally you want to be able to collect it for disposal to demonstrate and proof that it’s not just in saturated pockets of your oil which if the sample contains none may cause a false ND result for the total batch.
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Sorry to dig up an old thread. It was the closest to answering my question I found. I just had some concentrates fail for cadmium. I recently replaced a lot of fittings and valves on my machine. In the course of putting it back together, I managed to use a nipple in a 1/2"-1/4" adapter leading into my CRC that wasn’t stainless. It’s carbon steel and had a black residue on the threads where they cut through the tape and on the inside walls. Galvanic reaction, is my guess. Major mistake. I’m not sure how it ended up in my box of fittings. I use Media Bros CRX/CRY, and I don’t think is adsorbs much metal.
It’s ruined now, but it’ might still have more to teach me other than pulling my head out of my ass. Can this be spun in a centrifuge to remediate, or should I re-run it back through the machine and CRC with some T5, once I’ve verified it’s clean with a lab sample? I’ll clean it up and re-lab it for personal use. I hits some good numbers on everything else, but 600ppm cadmium won’t fly.