calliandra
Well-Known Member
hm, what does activating involve then? I'd thought the nice quench at the end of the burn is activation?that isnt activated, it wont work
![Shocked :shock: :shock:](/styles/smilies/icon_eek.gif)
hm, what does activating involve then? I'd thought the nice quench at the end of the burn is activation?that isnt activated, it wont work
Aw shucks, but that is exactly what happens when you quench from the bottom in a Kon-tiki - after a pyrolysis of roundabouts 700°C, that really takes out everything but the pure carbon.....What makes activated carbon great at absorbing is it has a gigantic surface area, the activation process is what gives it that giant surface area.
Bulk aquarium activated carbon. Everywhere that sells the stuff for pet fish has it, even walmart, its what they use to filter the water in aquariums.Aw shucks, but that is exactly what happens when you quench from the bottom in a Kon-tiki - after a pyrolysis of roundabouts 700°C, that really takes out everything but the pure carbon.....
Not sure about the extent (I'll have to check back with a friend who makes it and has all that data*), but that's what makes real biochar so incredibly porous and able to hold all sorts of stuff - and what makes the charcoal and stuff in between, commonly called biochar too, not-really-biochar....
* LOL ok so I found a study on biochar online, and they measured average surface areas from different kinds of kilns..."Average surface areas (SA) of biochar samples were 97 m2/g, ranging from 35.4 to 215 m2/g" (http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0176378#pone.0176378.s001) - whereby the higher values were achieved in the kontiki-like kilns..
Still definitely less than what you're saying the chemically prepped up carbon has!
So, after crying a bit in the corner that I can't use what I have... adapting the question
Do you know how can I tell, when sourcing activated carbon, that I'm getting good quality?
Cheers!
edit: or could I just use one of those textile filters you can get for extractor hoods? like this:
https://www.amazon.de/dp/B00AM1S2R0?psc=1&language=en_GB
After all, it's just for filtering odours in that setup requiring a fan with 25m³h.. so really small scale....![]()
High quality carbon is available anywhere that sells pet fish aquarium supplies as its used to filter aquarium water. Will be the very quality product for much cheaper than the hydro store.buy your carbon from the hydro store. Ive had bad luck on ebay/amazon
i ran into a secret- put your carbon filter that began with quality carbon on the grill for 20 hours, its all good again. the carbon seemed to start on fire since it was glowing but it stopped and was still not ash, the smell that comes out is horrid but its not like weed, it smelled like kitchen grease and dog poop!I dunno, the carbon sources themselves sell different product for water or air phase. The carbon in Ipower filters looks fine but doesnt work well. The other stuff I bought in bulk put out lots of fine dust even after rinsing and didnt work well. And another bunch claiming to be rc48 carbon was no good. I refill filters and they work excellent- when i use the sunlight supply carbon.
Do I see that correctly, that you aren't actually filling the whole bucket with carbon?I posted this in another thread. I might as well add my DIY air scrubber here.
What it looks like
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Activated Carbon Filter as Lining
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Additionally, Activated Charcoal inside for more scrubbing
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Works on my 2x6 closet, no smell. Hope thats helpful.
Yes, I only use 1 bag of charcoal but you can use more if you wantDo I see that correctly, that you aren't actually filling the whole bucket with carbon?
Also, what size fan is that?
Cheers!![]()
Are you referring to the foam carbon filter I'm using? If so, no offense taken.that filter is a joke, no offense. a regular mj use carbon filter is like 2 inches of pure granular carbon. the foam carbon filter is just basically dust, its whats sold to homeowners to freshen the air.