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Title: Regeneration of lactic and succinic acid-laden basic Sorbents byLeaching with a Volatile Base in an Organic Solvent

Abstract

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.

Authors:
;
Publication Date:
Research Org.:
Ernest Orlando Lawrence Berkeley NationalLaboratory, Berkeley, CA (US)
Sponsoring Org.:
USDOE Assistant Secretary for Energy Efficiency andRenewable Energy
OSTI Identifier:
900628
Report Number(s):
LBNL-40856
Journal ID: ISSN 0888-5885; IECRED; TRN: US200711%%212
DOE Contract Number:  
DE-AC02-05CH11231
Resource Type:
Journal Article
Journal Name:
Industrial and Engineering Chemistry Research
Additional Journal Information:
Journal Volume: 37; Journal Issue: 8; Related Information: Journal Publication Date: 08/1998; Journal ID: ISSN 0888-5885
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; LACTIC ACID; SUCCINIC ACID; REGENERATION; ORGANIC ION EXCHANGERS; LEACHING; AMINES; ORGANIC SOLVENTS

Citation Formats

Husson, Scott M., and King, C. Judson. Regeneration of lactic and succinic acid-laden basic Sorbents byLeaching with a Volatile Base in an Organic Solvent. United States: N. p., 1997. Web.
Husson, Scott M., & King, C. Judson. Regeneration of lactic and succinic acid-laden basic Sorbents byLeaching with a Volatile Base in an Organic Solvent. United States.
Husson, Scott M., and King, C. Judson. Mon . "Regeneration of lactic and succinic acid-laden basic Sorbents byLeaching with a Volatile Base in an Organic Solvent". United States.
@article{osti_900628,
title = {Regeneration of lactic and succinic acid-laden basic Sorbents byLeaching with a Volatile Base in an Organic Solvent},
author = {Husson, Scott M. and King, C. Judson},
abstractNote = {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.},
doi = {},
journal = {Industrial and Engineering Chemistry Research},
issn = {0888-5885},
number = 8,
volume = 37,
place = {United States},
year = {1997},
month = {9}
}