Molasses Injection Questions
Molasses Injection Questions
(OP)
We're looking to change our remedial approach at a PCE plume site from dual-phase extraction to molasses injection. We've completed a pilot-test and have seen the begining of successful dechlorination of TCE to 1,2-DCE (and a little 1,2-DCE to VC). We're going full-scale but I haven't found much info on the appropriate dilution or dosage of molasses? Any ideas? If I knew the hydrogen yield from molasses I could probably do it.
Thanks
Thanks





RE: Molasses Injection Questions
The Air Force has done some studies using molasses (again, with Arcadis as the consultant). See: http://www.estcp.org/projects/cleanup/199920o.cfm . The page gives the Air Force project officer, so you can contact him for information.
Hope all this helps.
Rick
RE: Molasses Injection Questions
RE: Molasses Injection Questions
RE: Molasses Injection Questions
I know Regenesis has calcs for their HRC product (HRC is quite expensive). Does anyone know if this can be used as a starting point for designing a molasses injection system?
4tuna makes some great points. Typically you would expect reductive dechlorination to stop at VC - VC degrades aerobically, not anaerobically like the other chlorinated hydrocarbons. I have seen some case studies where they've gotten lucky and achieved complete mineralization with molasses injection. And yes, ARCADIS Geraghty Miller is very tight lipped with the details (Hard to think of something as simple as molasses injection is proprietary but they are trying to keep their competitive edge)
RE: Molasses Injection Questions
Has anyone done life-cycle cost comparisons between molasses, permanganate, and HRC?
I appreciate thoughts on the subject. Thanks