Okay so SWIM followed an STB that I found online. Looked pretty simple but ended up taking a while.
He and his friends got together to buy a bunch of ACRB. They blended everything up. Not to a powder, but was still somewhat chunky. Didn't do the whole freeze/thaw/blend process, just cut the whole bark into chunks and blended. It still had 1/4" chunks being the biggest pieces, with a decent amount of sawdust consistency.
Anywhoo, they mixed it all into a couple wine jugs with a bunch of filtered water, with a bunch of lye. They made sure to measuse the ph to at least 12, or at least in the general vicinity. They also added a little more a week or two into the process because they heard that the ph will change a bit after it all settles.
Anyway, the majority of the bark sat in solution for a month or two, with some of it being drawn off for extraction. All the bark has now been filtered off and it's just juice. The juice has been napped and extracted 5-6 times in total, between all the different batches.
Now, they've been freeze precipping and filtering everything, xtals and yellow/orange goop. They have about 10 g of goop now, with a mini a/b expected to be completed, along with a vitamin C (ascorbic acid) redox, just to make sure any goop that is oxide is converted back before the final extraction.
So they were expecting quite a bit more extract, but realized one problem came from the fact that the bark wasn't completely pulverized. They also didn't do the vinegar boils.
Any other ideas as to why yield would be on the low side? Considering that the goop is still going to be processed, bringing yield down to an estimated 7-8 g xtal.
Thanks in advance!
He and his friends got together to buy a bunch of ACRB. They blended everything up. Not to a powder, but was still somewhat chunky. Didn't do the whole freeze/thaw/blend process, just cut the whole bark into chunks and blended. It still had 1/4" chunks being the biggest pieces, with a decent amount of sawdust consistency.
Anywhoo, they mixed it all into a couple wine jugs with a bunch of filtered water, with a bunch of lye. They made sure to measuse the ph to at least 12, or at least in the general vicinity. They also added a little more a week or two into the process because they heard that the ph will change a bit after it all settles.
Anyway, the majority of the bark sat in solution for a month or two, with some of it being drawn off for extraction. All the bark has now been filtered off and it's just juice. The juice has been napped and extracted 5-6 times in total, between all the different batches.
Now, they've been freeze precipping and filtering everything, xtals and yellow/orange goop. They have about 10 g of goop now, with a mini a/b expected to be completed, along with a vitamin C (ascorbic acid) redox, just to make sure any goop that is oxide is converted back before the final extraction.
So they were expecting quite a bit more extract, but realized one problem came from the fact that the bark wasn't completely pulverized. They also didn't do the vinegar boils.
Any other ideas as to why yield would be on the low side? Considering that the goop is still going to be processed, bringing yield down to an estimated 7-8 g xtal.
Thanks in advance!
I would however recommend a smaller batch next time, that way you can figure out expected yield & tune your process.