Separation of indole-3-acetic acid from tryptophan by bulk liquid membrane

Background: Indole-3-acetic acid (IAA) is an important growth hormone for plants obtained by biosynthesis from tryptophan. Aim: In this paper was studied the competitive transport of two biologically active compounds, indole-3-acetic acid (IAA) and tryptophan (TRP) through a liquid membrane. Methods: The separation of the two compounds was obtained using a hybrid liquid membrane system having as a carrier trioctylphosphine oxide (TOPO). Results: The most important operational parameter of the system were studied, pH influence on the efficiency of the transport process in correlation with the speciation diagrams of the two compounds: TRP and IAA. The evaluation of the transport process was performed through calculating the composition of the phases at the end of the transport process and the organic substrate flow at the membranes exit. Conclusion: Due to the transport efficiency of over 90% in the case of IAA and the high selectivity at the transport between IAA and TRP, the procedure can be applied at the sample preparation containing these analytes.

Download Full-text

Transport of Indole 3-acetic Acid through Bulk Liquid Membrane Influence of Carrier in the Diffusion Process

Revista de Chimie ◽

10.37358/rc.19.8.7414 ◽

2019 ◽

Vol 70 (8) ◽

pp. 2716-2719

Author(s):

Ioana Diaconu ◽

Ecaterina Anca Serban ◽

Georgiana Ileana Badea ◽

Elena Ruse

Keyword(s):

Acetic Acid ◽

Liquid Membrane ◽

Chemical Potential ◽

Potential Gradient ◽

Membrane System ◽

Extraction Constant ◽

Bulk Liquid ◽

Bulk Liquid Membrane ◽

Acid Complex ◽

Indole 3 Acetic Acid

The paper presents a study of the phenomena that take place at membrane system interfaces in the process of indole-3-acetic acid (IAA) transport. The results were obtained in a bulk liquid membrane system using trioctylamine, tributylphosphate, trioctilphosphine oxide as carriers in chloroform. The main equilibriums that take place at the interface feed phase% membrane phase were identified and the diffusion coefficient of the indole-3-acetic acid complex (DLS) and the extraction constant (Kex) were assessed. The influence of the chemical potential gradient on these parameters was considered.

Download Full-text

Evaluation of Kinetic Parameters at the Transport of Indole-3-acetic Acid Through Bulk Liquid Membranes

Revista de Chimie ◽

10.37358/rc.17.5.5577 ◽

2017 ◽

Vol 68 (5) ◽

pp. 903-907

Author(s):

Ecaterina Anca Serban ◽

Ioana Diaconu ◽

Elena Ruse ◽

Georgiana Ileana Badea ◽

Adriana Cuciureanu ◽

...

Keyword(s):

Acetic Acid ◽

Kinetic Parameters ◽

Trioctylphosphine Oxide ◽

Bulk Liquid ◽

Transport Parameters ◽

Kinetics Parameters ◽

First Order ◽

Phase Concentration ◽

Feed Phase ◽

Indole 3 Acetic Acid

Indole-3-acetic acid is a growth phytohormone considered the most important representative of auxin class. This paper presents the assessment of some kinetic parameters in the process of transport of indole-3-acetic acid taking into consideration the kinetic model of consecutive irreversible first order reactions. It was pursued the influence upon the process of parameters such as: feed phase concentration, stripping phase concentration in the presence of two type carriers: tributyl phosphate (TBP) and trioctylphosphine oxide (TOPO). Depending on these transport parameters were calculated kinetics parameters such as: pseudo-first-order apparent membrane entrance and exit rate constants, the maximum flux at the entrance and exit out of the membrane. The highest values of the transport flux is obtained in the presence of carrier trioctylphosphine oxide (TOPO) at the concentration in the feed phase of 10-4 mol/L indole-3-acetic acid and a concentration of 10--2mol/L NaOH in the stripping phase.

Download Full-text

Effects of process factors on performances of liquid membrane-based transfer of indole-3-acetic acid

Scientific Reports ◽

10.1038/s41598-021-02876-x ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Ioana Diaconu ◽

Oana Cristina Pârvulescu ◽

Sorina Laura Topală ◽

Tănase Dobre

Keyword(s):

Experimental Data ◽

Aqueous Solution ◽

Mass Transfer ◽

Acetic Acid ◽

Liquid Membrane ◽

Bulk Liquid ◽

Feed Phase ◽

Process Factors ◽

Positive Effect ◽

Indole 3 Acetic Acid

AbstractThe paper has aimed at studying the transfer of indole 3-acetic acid (IAA) from a feed aqueous solution to a stripping aqueous solution of NaOH using a chloroform bulk liquid membrane and trioctylamine (TOA) as a ligand (L). Initial molar concentrations of IAA in the feed phase, cIAA,F0 (10–4–10–3 kmol/m3), of TOA in the membrane phase, cL,M0 (10–2 and 10–1 kmol/m3), and of NaOH in the stripping phase, cNaOH,S0 (10–2 and 1 kmol/m3), were selected as process factors. Their effects on the final values of IAA concentration in the feed phase (cIAA,Ff) and stripping solution (cIAA,Sf), extraction efficiency (EF), distribution coefficient (KD), and recovery efficiency (ER) were quantified using multiple regression equations. Regression coefficients were determined from experimental data, i.e., cIAA,Ff,ex = 0.02–1 × 10–4 kmol/m3, cIAA,Sf,ex = 0.22–2.58 × 10–3 kmol/m3, EF,ex = 90.0–97.9%, KD,ex = 9.0–46.6, and ER,ex = 66.5–94.2%. It was found that cIAA,F0 had the most significant positive effect on cIAA,Ff and cIAA,Sf, whereas cNaOH,S0 had a major positive effect on EF, KD, and ER. A deterministic model based on mass transfer of IAA was developed and its parameters, i.e., mass transfer coefficient of IAA-L complex in the liquid membrane (0.82–11.5 × 10–7 m/s) and extraction constant (1033.9–1779.7 m3/kmol), were regressed from experimental data. The effect of cL,M0 on both parameters was significant.

Download Full-text

Effects of Process Factors on Performances of Liquid Membrane-Based Transfer of Indole-3-Acetic Acid

10.21203/rs.3.rs-923386/v1 ◽

2021 ◽

Author(s):

Ioana Diaconu ◽

Oana Cristina Pârvulescu ◽

Sorina Laura Topală ◽

Tănase Dobre

Keyword(s):

Experimental Data ◽

Aqueous Solution ◽

Mass Transfer ◽

Acetic Acid ◽

Liquid Membrane ◽

Bulk Liquid ◽

Feed Phase ◽

Process Factors ◽

Positive Effect ◽

Indole 3 Acetic Acid

Abstract The paper has aimed at studying the transfer of indole 3-acetic acid (IAA) from a feed aqueous solution to a stripping aqueous solution of NaOH using a chloroform bulk liquid membrane and trioctylamine (TOA) as a ligand (L). Initial molar concentrations of IAA in the feed phase, cIAA,F0 (10-4-10-3 kmol/m3), of TOA in the membrane phase, cL,M0 (10-2 and 10-1 kmol/m3), and of NaOH in the stripping phase, cNaOH,S0 (10-2 and 1 kmol/m3), were selected as process factors. Their effects on the final values of IAA concentration in the feed phase (cIAA,Ff) and stripping solution (cIAA,Sf), extraction efficiency (EF), distribution coefficient (KD), and recovery efficiency (ER) were quantified using multiple regression equations. Regression coefficients were determined from experimental data, i.e., cIAA,Ff,ex=0.02-1×10-4 kmol/m3, cIAA,Sf,ex=0.22-2.58×10-3 kmol/m3, EF,ex=90.0-97.9%, KD,ex=9.0-46.6, and ER,ex=66.5-94.2%. It was found that cIAA,F0 had the most significant positive effect on cIAA,Ff and cIAA,Sf, whereas cNaOH,S0 had a major positive effect on EF, KD, and ER. A deterministic model based on mass transfer of IAA was developed and its parameters, i.e., mass transfer coefficient of IAA-L complex in the liquid membrane (0.08-1.15×10-6 m/s) and extraction constant (1033.9-1779.7 m3/kmol), were regressed from experimental data. The effect of cL,M0 on both parameters was significant.

Download Full-text

Hg (II) transport via a bulk liquid membrane

Membrane Technology ◽

10.1016/s0958-2118(98)90529-8 ◽

1998 ◽

Vol 1998 (99) ◽

pp. 13 ◽

Cited By ~ 1

Keyword(s):

Liquid Membrane ◽

Bulk Liquid ◽

Bulk Liquid Membrane

Download Full-text

Kinetic Study of Hg(II) Transport Through a Bulk Liquid Membrane Containing Ester Derivative ofbis‐Calix[4]arene

Separation Science and Technology ◽

10.1081/ss-120039310 ◽

2005 ◽

Vol 39 (9) ◽

pp. 2189-2206 ◽

Cited By ~ 23

Author(s):

Sabri Alpaydin ◽

Mustafa Yilmaz ◽

Mustafa Ersoz

Keyword(s):

Kinetic Study ◽

Liquid Membrane ◽

Bulk Liquid ◽

Bulk Liquid Membrane ◽

Ester Derivative

Download Full-text

Liquid-liquid extraction and facilitated membrane transport of Pb2+ using a lipophilic acridono-crown ether as carrier

Journal of Inclusion Phenomena and Macrocyclic Chemistry ◽

10.1007/s10847-020-01036-4 ◽

2020 ◽

Vol 99 (1-2) ◽

pp. 117-129

Author(s):

Ádám Golcs ◽

László Bezúr ◽

Péter Huszthy ◽

Tünde Tóth

Keyword(s):

Membrane Transport ◽

Metal Ion ◽

Liquid Membrane ◽

Competitive Inhibition ◽

Liquid Extraction ◽

Bulk Liquid ◽

Bulk Liquid Membrane ◽

Liquid Liquid Extraction ◽

Component Systems ◽

Source Phase

AbstractStudies on liquid-liquid extraction and bulk liquid membrane (BLM) technique-based metal ion separation by a previously published Pb2+-selective acridono-18-crown-6 ether selector molecule were performed. The effects of the stirring speed, the quality of apolar organic membrane, the counterions of Pb2+, the pH of the aqueous phase, the concentration of the source phase, the concentration of the carrier in the BLM and the temperature on the Pb2+-separation were investigated. Moreover, the effects of the competitive inhibition due to the presence of Ag+, Ca2+, Co2+, Cu2+, K+, Mg2+, Na+ and Zn2+ as competing ions in a multicomponent aqueous source phase of different ion-concentrations were also studied. After a proper dilution of the multicomponent aqueous source phase, excellent Pb2+-selectivity was achieved without a significant reduction in the efficiency compared to the liquid membrane transport of single-component systems. Based on the BLM-cell studies the applied selector molecule proved to be suitable for the development of liquid membrane-based Pb2+-selective separation methods, which can be greatly aided by the analysis of the effects on the separation and by the optimization of the parameters of the process discussed here.

Download Full-text