Regeneration of lactic and succinic acid-laden basic Sorbents byLeaching with a Volatile Base in an Organic Solvent
Leaching with an organic solution of a volatile base wasexplored as a method of regenerating tertiary amine and pyridyl sorbents.Experimental data are presented that show that regeneration efficiencycorrelates with the nonaqueous basicity of the regenerant as measured bythe Gutmann donicity scale. Essentially complete regeneration of lacticacid-laden Dowex MWA-1 was achieved when 8-10 mol of trimethylamine werepresent for every mole of adsorbed acid; adequate (>70 percentregeneration was obtained at a 2:1 molar ratio. The; resultingtrimethylamine-lactic acid complex can be thermally decomposed fully whentrimethylamine is employed in an organic solvent instead of in water. Alikely cause of the incomplete thermal decomposition of trimethylammoniumlactate in previous, water-based systems is the aqueous environment inwhich the decomposition was performed.
- Research Organization:
- Ernest Orlando Lawrence Berkeley NationalLaboratory, Berkeley, CA (US)
- Sponsoring Organization:
- USDOE Assistant Secretary for Energy Efficiency andRenewable Energy
- DOE Contract Number:
- AC02-05CH11231
- OSTI ID:
- 900628
- Report Number(s):
- LBNL--40856
- Journal Information:
- Industrial and Engineering Chemistry Research, Journal Name: Industrial and Engineering Chemistry Research Journal Issue: 8 Vol. 37; ISSN IECRED; ISSN 0888-5885
- Country of Publication:
- United States
- Language:
- English
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