Separation/Competitive Transport of Heavy Metal Ions across the Bulk Liquid Membranes with N,N',N''-Tris(4-methylphenyl)phosphoric Triamide As Carrier

Akbari, S.; Khoshnood, Razieh Sanavi; Pourayoubi, Mehrdad

doi:10.1134/s0036024419120264

Cited by 1 publication

(3 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Liquid membranes are semi-permeable barriers that separate two aqueous phases, i.e., feed (source or donor) and stripping (receiving or acceptor) phases. Techniques based on bulk liquid membranes (BLMs), emulsion liquid membranes (ELMs), and supported liquid membranes (SLMs) have been widely used to separate organic compounds and metal ions from aqueous solutions 21 – 24 . BLM-based separation technique is the most simple and efficient among them 20 .…”

Section: Introductionmentioning

confidence: 99%

“…Statistical models based on a 2 3 factorial plan and a deterministic model based on mass transfer of IAA were used to predict the process performances under different operation conditions. Chloroform is widely used as BLM 21 , 23 , 24 , 32 . It has a lower viscosity ( η = 0.58 cP) than other solvents, e.g .…”

Section: Introductionmentioning

confidence: 99%

“…It has a lower viscosity ( η = 0.58 cP) than other solvents, e.g . , 1,2-dichloroethane ( η = 0.73 cP), nitrobenzene ( η = 1.62 cP), resulting in a faster mass transfer 21 . TOA carrier can heavily improve the separation efficiency.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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

Diaconu

Pârvulescu

Topală

et al. 2021

Sci Rep

View full text Add to dashboard Cite

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 (0.82–11.5 × 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.

show abstract

Section: Introductionmentioning

confidence: 99%