Recovery of propionic acid by reactive extraction - 1. Equilibrium, effect of pH and temperature, water coextraction

2009 ◽  
Vol 3 (1-3) ◽  
pp. 91-98 ◽  
Author(s):  
Amit Keshav ◽  
Kailas L. Wasewar ◽  
Shri Chand
Keyword(s):  
Propionic Acid ◽  
Reactive Extraction ◽  
Effect Of Ph ◽  
Equilibrium Effect ◽  
Temperature Water

Effect of pH on Ether, Ester, and Carbonate Hydrolysis in High-Temperature Water

2008 ◽  
Vol 47 (3) ◽  
pp. 577-584 ◽  
Author(s):  
Craig M. Comisar ◽  
Shawn E. Hunter ◽  
Ashley Walton ◽  
Phillip E. Savage
Keyword(s):  
High Temperature ◽  
Effect Of Ph ◽  
High Temperature Water ◽  
Ether Ester ◽  
Temperature Water

Propionic acid production from food waste in batch reactors: Effect of pH, types of inoculum, and thermal pre-treatment

2021 ◽  
Vol 319 ◽  
pp. 124166
Author(s):  
Rowayda Ali ◽  
Florencia Saravia ◽  
Andrea Hille-Reichel ◽  
Johannes Gescher ◽  
Harald Horn
Keyword(s):  
Propionic Acid ◽  
Food Waste ◽  
Acid Production ◽  
Batch Reactors ◽  
Effect Of Ph ◽  
Propionic Acid Production ◽  
Pre Treatment

Equilibrium study on reactive extraction of propionic acid with N1923 in different diluents

2009 ◽  
Vol 278 (1-2) ◽  
pp. 103-108 ◽  
Author(s):  
Kang Wang ◽  
Zhidong Chang ◽  
Yinchen Ma ◽  
Chao Lei ◽  
Shengchao Jin ◽  
...  
Keyword(s):  
Propionic Acid ◽  
Reactive Extraction ◽  
Equilibrium Study

Equilibrium and Kinetics of Reactive Extraction of Propionic Acid Using Aliquat 336 and Tri-n-Butyl Phosphate in n-Hexanol

2009 ◽  
Vol 7 (1) ◽  
Author(s):  
Dr. Kailas L. Wasewar ◽  
Amit Keshav ◽  
Shri Chand
Keyword(s):  
Propionic Acid ◽  
Acid Concentration ◽  
Fermentation Broth ◽  
Reactive Extraction ◽  
Acid Extraction ◽  
Aliquat 336 ◽  
Pseudo First Order Reaction ◽  
First Order ◽  
Pharmaceutical Industries ◽  
Kinetics Of

Recovery of propionic acid from different sources, like aqueous streams or from fermentation broth, is important in view of its wide usage in food, chemical and pharmaceutical industries. Reactive extraction is an emerging separation technique having numerous advantages like high selectivity and recovery. Effect of acid concentration, extractant concentration, pH, temperature and kinetics are the important steps in the reactive extraction. Equilibrium of propionic acid extraction using tri-n-butyl phosphate (TBP) and Aliquat 336 in n-hexanol respectively was carried out to find the better extractant out of the two for extraction of propionic acid. Aliquat 336 was found to be better than TBP with Ks = 2.2119 m3/kmol, thus indicating good complexation between it and the acid. The kinetics of extraction of the acid using Aliquat 336 in a stirred cell was investigated. The reaction was found to be first order in acid concentration and zero order in Aliquat 336 concentration. The reaction was found to be fast pseudo first order reaction occurring in the diffusion film and was found to be independent of hydrodynamics conditions. Rate constant was evaluated to be 163.398 1/s.

scholarly journals Reactive Extraction of Levulinic Acid using Tri-n-octylamine in 1-Octanol: Equilibria and Effect of pH

2020 ◽  
Vol 8 (5) ◽  
pp. 5252-5256
Keyword(s):  
Distribution Coefficient ◽  
Levulinic Acid ◽  
Extraction Efficiency ◽  
Fermentation Broth ◽  
Reactive Extraction ◽  
High Yield ◽  
Chemical Extraction ◽  
Effect Of Ph ◽  
Loading Ratio ◽  
Physical And Chemical

Reactive extraction is a sophisticated separation technique used for the recovery of carboxylic acids from fermentation broth. Levulinic acid is a versatile chemical. A right combination of extractant and diluent will provide a high yield. The reactive extraction of levulinic acid from aqueous solution with tri-n-octylamine (TOA) dissolved in 1-octanol was investigated at room temperature. The effect of pH was studied. From the physical and chemical equilibrium experimental results, the distribution coefficient (KD), extraction efficiency (E%), loading ratio (Z), stoichiometric loading factor (ZS) and modified separation factor (Sf ) are calculated. It was found that physical extraction provided less yield compared to chemical extraction. A maximum KD was obtained as 5.248 using 40% TOA (0.9059 mol/L) while 83.99 % of the levulinic acid was extracted. By increasing the initial concentration of levulinic acid increased the concentration of levulinic acid in both the organic phase and aqueous phase. As the concentration of TOA increases from 10 to 40 % (0.2264 mol/L to 0.9059 mol/L), the distribution coefficient and extraction efficiency also increase. By increasing the pH from 3 to 7, the distribution coefficient and extraction efficiency were drastically affected.

Recovery of propionic acid from an aqueous stream by reactive extraction: effect of diluents

Desalination ◽  
2009 ◽  
Vol 244 (1-3) ◽  
pp. 12-23 ◽  
Author(s):  
Amit Keshav ◽  
Kailas L. Wasewar ◽  
Shri Chand
Keyword(s):  
Propionic Acid ◽  
Reactive Extraction

Direct reactive extraction of propionic acid from Propionibacterium acidipropionici simulated broths

2012 ◽  
Vol 29 ◽  
pp. S224
Author(s):  
Alexandra Cârlescu ◽  
Mădălina Poştaru ◽  
Anca-Irina Galaction ◽  
Alexandra Cristina Blaga ◽  
Dan Caşcaval
Keyword(s):  
Propionic Acid ◽  
Reactive Extraction ◽  
Propionibacterium Acidipropionici
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