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Stainless barrel to compost in

Posted by chris2000 none (My Page) on
Thu, Feb 23, 12 at 18:38

I have a 55 Gallon stainless barrel (Type 304 food grade) and would like to make a tumbler for composting, all I want to know is would I need to be concerned about chromium leaching from the stainless alloys into the soil?


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RE: Stainless barrel to compost in

No.
304 is immutable to the organic acids developed during composting.
Careless fabrication may cause worked areas to be compromised ( susceptible to corrosion).
Even so, this would be of small concern.


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RE: Stainless barrel to compost in

I would agree with alphonse. 304 contains both Cr and Ni (a fact I just learned by Googling, I learn something new every day around here). The small amounts that may come off it will be insignificant. There is a small harmless background of many metals in soil, and in fact it takes quite a bit to increase that to dangerous levels given the total weight of soil in your garden. I've made calculations - not on a SS barrel but other materials with the same idea - and was surprised at the results.

Boy if I had a container like that I'd go into home brewing on a larger scale. :-]


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