Reactive extraction of pimelic (heptanedioic) acid from dilute aqueous solutions using trioctylamine in decan-1-ol

Martı, Mustafa Esen; Zeidan, Hani; Uslu, Hasan

doi:10.1016/j.fluid.2016.02.039

Cited by 14 publications

(25 citation statements)

References 34 publications

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“…This was valid for almost all FA concentrations. The results obtained for the investigation of the acid concentration effect were consistent with the literature (Tamada et al, 1990;Gu et al, 1998;Keshav et al, 2009;Martı et al, 2011;Uslu et al, 2014;Martı et al, 2016).…”

Section: Effect Of Acid Concentrationsupporting

confidence: 90%

Recovery of Formic Acid by Reactive Extraction Using an Environmentally-Friendly Solvent

Martı¹

2017

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Today many carboxylic acids are recovered from biological production media and industrial wastewaters. Reactive extraction is favored over other separation methods due to its high recovery efficiency, ease of operation, low energy demand and reduced cost. However, use of toxic organic diluents in the organic phases is the main disadvantage of the method. In this study, the appropriateness of an environmentally-friendly solvent, sunflower oil (SFO) to be used as organic phase diluent during the recovery of formic acid (FA) from aqueous solutions by reactive extraction was evaluated. Alamine-336 was used as the extractant and the results obtained with SFO were compared with those obtained using octanol. The separation process reached an equilibrium in 3 hours and the recovery efficiency increased with the increase in extractant percentages. The initial FA concentration positively influenced the recovery when SFO was used as the diluent. In the ranges of the parameters studied, the highest recovery values were 98.6% and 82.6% with octanol and SFO, respectively. This study shows that low molecular weight carboxylic acids, e.g. FA can be recovered from aqueous solutions by reactive extraction using environmentally-friendly solvents such as SFO. Key Words: Formic acid, Reactive extraction, Sunflower oil, Alamine-336, EquilibriumFormik Asidin Çevre Dostu Bir Çözücü Kullanılarak Tepkimeli Özütleme Yöntemi ile Geri Kazanımı ÖZ: Günümüzde pek çok karboksilik asit biyolojik üretim ortamlarından ve endüstriyel atık sulardan geri kazanılmaktadır. Tepkimeli özütleme, yüksek geri kazanım verimi, işlem basitliği, düşük enerji gereksinimi ve maliyeti nedeniyle diğer ayırma yöntemlerine tercih edilmiştir. Fakat organik fazlarda zehirli organik seyrelticilerin kullanımı yöntemin en önemli dezavantajıdır. Bu çalışmada çevre dostu bir çözücünün, ayçiçek yağının formik asidin sulu çözeltilerinden tepkimeli özütleme yöntemi ile geri kazanımı sırasında organik faz seyrelticisi olarak zehirli organik kimyasallar yerine kullanımı değerlendirilmiştir. Özütleyici olarak Alamine-336 kullanılmış ve ayçiçek yağı ile elde edilen sonuçlar oktanol ile elde edilen sonuçlarla karşılaştırılmıştır. Ayırma süreci 3 saatte dengeye ulaşmış ve geri kazanım verimi özütleyici yüzdesi ile birlikte artmıştır. Ayçiçek yağı seyreltici olarak kullanıldığında başlangıç asit derişimi geri kazanımı pozitif yönde etkilemiştir. Çalışılan değişken aralıklarında oktanol ve ayçiçek yağı ile en yüksek geri kazanım verimleri sırasıyla %98,6 ve %82,6'dır. Bu çalışma formik asit gibi düşük molekül ağırlıklı karboksilik asitlerin tepkimeli özütleme ile ayçiçek yağı gibi çevre dostu çözücüler kullanılarak sulu çözeltilerden geri kazanılabileceğini göstermiştir.

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Section: Effect Of Acid Concentrationsupporting

confidence: 90%

Recovery of Formic Acid by Reactive Extraction Using an Environmentally-Friendly Solvent

Martı¹

2017

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“…These trends are consistent with the literature(6)(7)(8)(9)(10)(11)(12).At all Alamine 336 concentrations, xylene and 1-octanol produced the minimum and maximum K D values, respectively, while that for 1-octanol-modified xylene was intermediate.Since xylene was the predominant component (70%) in the modified organic phase, extraction efficiencies and K D values for acetic acid were expected to be closer to those obtained with pure xylene. However, modifying xylene with 1-octanol produced a synergy resulting in high reactive extraction efficiencies as observed at physical extraction.…”

supporting

confidence: 91%

“…On the other hand, reactive extraction has been proposed as a promising approach for this purpose due to its high recovery, low energy requirement, process simplicity and thermal stability (6)(7)(8)(9)(10)(11)(12). Recently "green" chemicals such as ionic liquids (13)(14)(15)(16) and non-toxic diluents, e.g.…”

Section: Introductionmentioning

confidence: 99%

Solvent modification effect on the physical and chemical extraction of acetic acid

Martı

2016

Separation Science and Technology

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Combined use of inert diluents with polar modifiers enables former to be utilized for the recovery of polar value-added chemicals. The results show that polarities of both solvent and modifier are critical for efficient separations. Thus, K D values with 1-octanol were higher than those with 1-decanol; while those with xylene were superior to those with hexane and toluene.Increasing amine concentrations increased the K D values, in contrast to the trends with pH and temperature. About 33%, 79% and 67% of acetic acid was recovered using 25% (v/v) Alamine 336 in xylene, 1-octanol and 30% 1-octanol-modified xylene, respectively.A c c e p t e d M a n u s c r i p t 2 Therefore, solvent modification positively affects the extraction power of inert diluents for acetic acid recovery.

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“…24,25 There is very limited literature available on intensification of PA recovery from aqueous solution/fermentation broths of biosynthesis processes. 26 The present study is focused on the reactive extraction of PA from simulated aqueous solution by an aminic extractant, tri-n-octylamine (TOA), in natural oils (rice bran oil, sunflower oil, and soybean oil). Most of the edible oils, such as soybean, sunflower and rice bran oil, extracted from plant sources are biodegradable in nature, and their constituents take part in different biosynthesis and metabolic activities, which suggest their nontoxicity for microorganisms as well as humankind.…”

Section: Introductionmentioning

confidence: 99%

“…There is very limited literature available on intensification of PA recovery from aqueous solution/fermentation broths of biosynthesis processes . The present study is focused on the reactive extraction of PA from simulated aqueous solution by an aminic extractant, tri- n -octylamine (TOA), in natural oils (rice bran oil, sunflower oil, and soybean oil).…”

Section: Introductionmentioning

confidence: 99%

Experimental and Theoretical Equilibrium Insights in the Reactive Extraction of Pimelic Acid with Tri-n-octylamine in Natural Solvents

Pandey¹,

Jaiswal²,

Sohane³

et al. 2021

Ind. Eng. Chem. Res.

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The theoretical and experimental studies on the reactive extraction of pimelic acid (PA) from dilute aqueous solutions with tri-n-octylamine (TOA) in three different green and natural solvents namely, rice bran oil, sunflower oil (SFO), and soybean oil are carried out. In addition, physical extraction (extraction with pure solvent, natural oil) is also studied to determine the partition and dimerization constants. The experiments on reaction equilibria were performed to calculate the extraction efficiencies with variable TOA concentration, PA concentration, type of diluent/solvent, and temperature at atmospheric pressure (101.325 ± 1 kPa). The acid distribution coefficient (K D), degree of extraction (E, %), and loading factor (Z) were calculated as the extraction efficiencies to recover the PA from aqueous solution. The maximum K D (7.76) and extraction yield (88.58%) were obtained for initial PA concentration (C H2P,o= 0.2497 kmol·m–3) with 0.687 kmol·m–3 TOA concentration (C̅ S,o) dissolved in sunflower oil. The overall stoichiometry and reaction equilibrium constant (K E) and individual acid-extractant complexation constants (K 11, K 12, K 21, and K 31) of 1:1, 1:2, 2:1, and 3:1 PA–TOA complexes in the organic phase and their complex concentrations (C 11, C 12, C 21, and C 31) are determined using an equilibrium chemical model and bioinspired genetic algorithm, differential evolution, for better understanding of the reaction mechanism. Moreover, based on extraction conditions, the thermodynamic study is carried out to determine the change in enthalpy (−1320.11 J·mol–1), entropy (−3.63427 J·mol–1·K–1), and Gibbs free energy (−254.72 J·mol–1·K–1) of reactive separation of PA with TOA–SFO.

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Reactive extraction of pimelic (heptanedioic) acid from dilute aqueous solutions using trioctylamine in decan-1-ol

Cited by 14 publications

References 34 publications

Recovery of Formic Acid by Reactive Extraction Using an Environmentally-Friendly Solvent

Recovery of Formic Acid by Reactive Extraction Using an Environmentally-Friendly Solvent

Solvent modification effect on the physical and chemical extraction of acetic acid

Experimental and Theoretical Equilibrium Insights in the Reactive Extraction of Pimelic Acid with Tri-n-octylamine in Natural Solvents

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