Selective recovery of pyruvic acid from two and three acid aqueous solutions by reactive extraction

Date

2015-12-17

Author

Marti, Mustafa E.
Gürkan, Türker

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 United States License.

Item Usage Stats

427
views

0
downloads

With single-stage extraction, approximately 40% of the acetic acid (AA) is preferentially and selectively recovered from the aqueous three-acid solution using 0.1 M trioctylamine (TOA) in 1-octanol. Pyruvic acid is the only solute positively affected by an increase in the TOA concentration; however, the purity of the final extract is compromised by co-extracted acids. The distribution coefficient (K-D) values obtained in three-acid solutions are lower than those obtained in single-acid solutions, showing the antagonistic effects due to the presence of other acids. However, in two-acid solutions, the presence of lactic acid (LA) at an initial concentration of about 7-20% (0.05-0.15 M) of that of PA (0.75-0.85 M) causes an increase of 33-80% on the K-D of the latter. Using 0.6 M TOA in 1-octanol, 92% of initial PA is recovered from the two-acid solution. The competition with the other acid(s) for ion pair formation and its marked hydrophilicity hinders the extraction of LA from multiple acid solutions. Thus, a successful selective separation is achieved for the three acids present in the aqueous phase. A further increase in the initial concentration ratio of LA to PA in two-acid solution results in reduced KD values for the latter. The maximum separation factor of 54.3 is obtained at the lowest acid ratio (AR, 0.19) and highest TOA concentration (0.6 M). Hence, reactive extraction can be successfully employed to selectively recover PA from two and three-acid aqueous solutions.

Subject Keywords

Selective recovery;, Multiple-acid aqueous solutions;, Reactive extraction;, Pyruvic acid;, Trioctylamine, Amıne-Based Extractant;, Trı-N-Octylamıne;, Fermentatıon Broth;, Carboxylıc-Acıds;, Lactıc-Acıd;, Torulopsıs-Glabrata;, Succınıc Acıd;, Acetıc-Acıd;, Mannheımıa-Succınıcıproducens;, Escherıchıa-Coli

URI

https://hdl.handle.net/11511/28634

Journal

Separatıon And Purıfıcatıon Technology

DOI

https://doi.org/10.1016/j.seppur.2015.09.067

Collections

Department of Chemical Engineering, Article

Suggestions

OpenMETU
Core

Dimethyl ether from syngas and effect of CO2 sorption on product distribution over a new bifunctional catalyst pair containing STA@SBA-15 ÇELİK ÖZCAN, MERVE; PEKMEZCİ KARAMAN, BİRCE; OKTAR, NURAY; Doğu, Timur (2022-12-01) Direct synthesis of dimethyl ether (DME) from syngas was investigated in the presence of a bifunctional catalyst pair containing silicotungstic acid (STA) incorporated SBA-15 (5, 10, 25% by wt. STA) for the in-situ dehydration of synthesized methanol. The methanol synthesis component of this catalyst mixture is a Cu/ZnO-based commercial (HF) catalytic material. The new STA@SBA-15 type solid acid catalysts synthesized in this study indicated ordered mesoporous structures with surface area values in the range...
Enhancement of biodegradability by continuous ozonation in Acid Red-151 solutions and kinetic modeling Gokcen, F; Ozbelge, TA (Elsevier BV, 2005-11-15) In this work, continuous ozonation of aqueous Acid Red-151 was performed in a stirred tank reactor at neutral pH and 25 degrees C. The results show that ozonation is capable of a rapid conversion of the Acid Red-151 dye molecule to more biodegradable intermediates up to the ozonation time of 120 min at which the optimum BOD5/COD ratio is obtained. The peak BOD5/COD ratios were found to be in the range of 0.028-0.35 for the initial dye concentrations being in the range of 1000-100 mg/L, respectively.
Simultaneous determination of Cd and Zn by fluorescence spectrometry using a novel reagent and surfactants Ertas, N; Akkaya, EU; Ataman, Osman Yavuz (1997-01-01) A method for the simultaneous determination of zinc and cadmium with the chelating ligand 9-(1',4',7',10'-Tetraazacyclododecyl)methylanthracene using spectrofluorimetry is described. Effect of experimental variables on fluorescence intensities and on the spectral behavior of the metal-ligand in several types of surfactants have been studied, The range of application is between 2.0 and 35 mu g/L for both zinc and cadmium. The method has been applied to the determination of zinc and cadmium in real leachate s...
Efficient synthesis of 1-alkoxycarbonyl-methyl-2-alkylpyrroles from dichloro- and methoxychloropropylalkyl ketones Gadzhili, RA; Nadzhafova, RA; Sesenoglu, O (2002-01-01) The condensation reaction of 2,3-dichloropropyl- and 2-methoxy-3-chloropropyl alkyl ketones with alkyl 2-aminoacetate salts leads to 1-alkoxy-carbonylmethyl-2-alkylpyrroles. These compounds, with various bases, gave 1-carbamoylmethyl-, 1-dialkylaminocarbonylmethyl-, 1-carbazoyl methyl-2-alkylpyrroles and potassium salt of 2-alkyl-pyrrolyl-1-acetic acid.
Chemical synthesis of pure and Gd-doped CaZrO3 powders Gonenli, IE; Tas, AC (1999-01-01) Aqueous solutions of calcium chloride (CaCl2.2H(2)O) and zirconium oxychloride (ZrOCl2.8H(2)O), in appropriate volumetric amounts, were used as the starting chemicals in the synthesis of phase-pure CaZrO3 powders. Rare earth element dopings (up to 25 at%) were performed by using the aqueous chloride solutions of gadolinium (Gd). Formation of CaZrO3 powders were achieved by two different chemical synthesis techniques: (i) self-propagating combustion synthesis, and (ii) precipitation in the presence of EDTA b...

Citation Formats

M. E. Marti and T. Gürkan, “Selective recovery of pyruvic acid from two and three acid aqueous solutions by reactive extraction,” Separatıon And Purıfıcatıon Technology, pp. 148–157, 2015, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/28634.