scholarly journals Author Correction: Effects of process factors on performances of liquid membrane-based transfer of indole-3-acetic acid

2022 ◽  
Vol 12 (1) ◽  
Author(s):  
Ioana Diaconu ◽  
Oana Cristina Pârvulescu ◽  
Sorina Laura Topală ◽  
Tănase Dobre
Keyword(s):  
Acetic Acid ◽  
Liquid Membrane ◽  
Process Factors ◽  
Indole 3 Acetic Acid

An amendment to this paper has been published and can be accessed via a link at the top of the paper.

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

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.

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

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.

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

2020 ◽  
Vol 16 ◽  
Author(s):  
Ioana Diaconu ◽  
H.Y. Aboul-Enein ◽  
Cristina Orbeci ◽  
A.A. Bunaciu ◽  
Ecaterina Anca Serban ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Transport Process ◽  
Liquid Membrane ◽  
Organic Substrate ◽  
Biologically Active ◽  
Trioctylphosphine Oxide ◽  
Bulk Liquid ◽  
Bulk Liquid Membrane ◽  
Operational Parameter ◽  
Indole 3 Acetic Acid

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.

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

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.

Indole-3-acetic acid uptake in isolated protoplasts of the moss Funaria hygrometrica

1990 ◽  
Vol 80 (4) ◽  
pp. 584-592 ◽  
Author(s):  
Ulrike Geier ◽  
Olaf Werner ◽  
Martin Bopp
Keyword(s):  
Acetic Acid ◽  
Acid Uptake ◽  
Funaria Hygrometrica ◽  
Isolated Protoplasts ◽  
Indole 3 Acetic Acid
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