Hydration structures of lactic acid: characterization of the ionic clathrate hydrate formed with a biological organic acid anion

2014 ◽  
Vol 16 (39) ◽  
pp. 21467-21472 ◽  
Author(s):  
Sanehiro Muromachi ◽  
Toru Abe ◽  
Yoshitaka Yamamoto ◽  
Satoshi Takeya
Keyword(s):  
Lactic Acid ◽  
Organic Acid ◽  
Clathrate Hydrate ◽  
Acid Anion ◽  
Organic Acid Anion ◽  
Clustering Patterns

Lactic acid is incorporated in the ionic clathrate hydrate showing various water clustering patterns.

scholarly journals Imidazolium-type anion exchange membranes for improved organic acid transport and permselectivity in electrodialysis

2022 ◽  
Author(s):  
Matthew Jordan ◽  
Tanmay Kulkarni ◽  
Dodangodage Senadheera ◽  
Revati Kumar ◽  
Yupo Lin ◽  
...  
Keyword(s):  
Organic Acid ◽  
Anion Exchange ◽  
Quaternary Ammonium ◽  
Anion Exchange Membranes ◽  
Acid Transport ◽  
Acid Anion ◽  
Imidazolium Cations ◽  
Organic Acid Anion ◽  
2D Noesy ◽  
Organic Acid Transport

Abstract Most commercial anion exchange membranes (AEMs) deploy quaternary ammonium moieties. Alternative cation moieties have been explored in AEMs for fuel cells, but there are no studies focused examining alternative tethered cations in AEMs for ionic separations – such as organic acid anion transport via electrodialysis. H-cell and conductivity experiments demonstrate that tethered benzyl 1-methyl imidazolium groups in polysulfone AEMs enhance lactate conductivity by 49% and improved lactate anion flux by 24x when compared to a quaternary benzyl ammonium polysulfone AEM. An electrodialysis demonstration with the imidazolium-type AEM showed a 2x improvement in lactate anion flux and 20% improvement in permselectivity when benchmarked against the quaternary ammonium AEM. Molecular dynamics and 2D NOESY NMR revealed closer binding of lactate anions to the imidazolium cations when compared to the quaternary ammonium cation. It is posited that this closer binding is responsible to greater flux values observed with imidazolium-type AEM.

scholarly journals Nutrient Uptake and Organic Acid Anion Metabolism in Lupins and Peas Supplied with Nitrate

1994 ◽  
Vol 74 (1) ◽  
pp. 69-74 ◽  
Author(s):  
S. P. Loss ◽  
A. D. Robson ◽  
G. S. P. Ritchie
Keyword(s):  
Organic Acid ◽  
Nutrient Uptake ◽  
Acid Anion ◽  
Organic Acid Anion
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