Use of HCl in bioprocess
Use of HCl in bioprocess
(OP)
Could anyone advise if it is possible to use HCl in low concentrations in bioprocesses without having the corrosive effect on the stainless steel equipment (tanks, pipes etc.)? The idea would be to acidify the bioprocess feeding media. The estimated HCl conc. would be 0.07 - 0,21 N HCl.





RE: Use of HCl in bioprocess
Have you tried H2SO4 as an acidifier instead? Have had problems with HCl before with a bacterial process, we found it actually inhibited bug growth.
If you are in the design phases maybe consider using a higher grade steel - 316 or 2205, if you were looking at using 304 originally?
RE: Use of HCl in bioprocess
but the idea is to quit using H2SO4 as this gives too much SO4 in the process.
So using HCl would be still good.
ildarn
RE: Use of HCl in bioprocess
What about using acetic acid or citric acid?
Both are easier on stainless.
StoneCold
RE: Use of HCl in bioprocess
tanks for your attention,
H2SO4 is what we actually want to prevent (due the waste water issues, SO4 load etc.).
RE: Use of HCl in bioprocess