Extraction of carboxylic acids with amine extractants. 1. Equilibria and law of mass action modeling

Tamada, Janet A.; Kertes, A.S.; King, C. Judson

doi:10.1021/ie00103a035

Cited by 434 publications

(470 citation statements)

References 8 publications

(15 reference statements)

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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%

“…This is consistent with the results reported in the literature for different systems (Martı et al, 2011;Martı, 2016. Due to the weak interactions, the recovery with physical extraction is not efficient and necessitates repetitive extraction processes or the use of extraction columns including several steps (Tamada et al, 1990). For example, to recover 90% of the FA, either the extraction process should be repeated 11 times or an extraction column with 11 stages is needed, thus making the process inefficient and costly.…”

Section: Physical Extractionsupporting

confidence: 89%

“…However, at the same extractant levels and higher FA concentrations, the z values varied between 1 and 2, indicative of the simultaneous presence of 2:1 and 1:1 type acid-amine complexes. The results are consistent with those reported in the literature for tertiary amines and carboxylic acids (Tamada et al, 1990;Wasewar et al, 2002;Qin et al, 2003;Uslu, 2009;Martı et al, 2011) CONCLUSION Solvent or diluent type used during reactive extraction is so important for the recovery of carboxylic acids (Kertes and King, 1986). However, the most effective solvents are generally toxic chemicals and this is the most critical disadvantage of the technique that prevents its widespread use in industries.…”

Section: Stoichiometrysupporting

confidence: 89%

“…Thus, it directly influences the stability and solubility of the complex structures that also affect the recovery efficiency. Mostly alcohols, alkanes and ketones are used as the organic phase diluents in the reactive extraction of carboxylic acids (King and Kertes, 1986;Tamada et al, 1990;Martı, 2010;Uslu et al, 2015;Datta et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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

Martı¹

2017

Scitech

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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%

Section: Physical Extractionsupporting

confidence: 89%

Section: Stoichiometrysupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

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

Martı¹

2017

Scitech

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“…In previous work in our research group dealing with complexing extraztants, Tamada et al (Tamada, Kertes, and King, 1990;Tamada andKing, 1990a, 1990b) studied extraction of carboxylic acids with amine extractants, and Arenson et al (Arenson, 1989;Arenson, Kertes, and King, 1988) studied extraction of alcohols with m-cresol. They measured b Flick, 1985.…”

mentioning

confidence: 99%

Separation of glycols from dilute aqueous solutions via complexation with boronic acids

Randel¹,

King²

1991

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Propionic acid production by extractive fermentation. I. Solvent considerations

Glatz

1998

Biotechnol. Bioeng.

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Solvent selection for extractive fermentation for propionic acid was conducted with three systems: Alamine 304‐1 (trilaurylamine) in 2‐octanol, 1‐dodecanol, and Witcohol 85 NF (oleyl alcohol). Among them, the solvent containing 2‐octanol exhibited the highest partition coefficient in acid extraction, but it was also toxic to propionibacteria. The most solvent‐resistant strain among five strains of the microorganism was selected. Solvent toxicity was eliminated via two strategies: entrapment of dissolved toxic solvent in the culture growth medium with vegetable oils such as corn, olive, or soybean oils; or replacement of the toxic 2‐octanol with nontoxic Witcohol 85 NF. The complete recovery of acids from the Alamine 304‐1/Witcohol 85 NF was also realized with vacuum distillation. ©1998 John Wiley & Sons, Inc. Biotechnol Bioeng 57: 454‐461, 1998.

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Extraction of carboxylic acids with amine extractants. 1. Equilibria and law of mass action modeling

Cited by 434 publications

References 8 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

Separation of glycols from dilute aqueous solutions via complexation with boronic acids

Propionic acid production by extractive fermentation. I. Solvent considerations

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