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A Dakshinamoorthy - One of the best experts on this subject based on the ideXlab platform.

  • facilitated transport of am iii through a flat sheet supported liquid membrane fsslm containing tetra 2 ethyl hexyl diglycolamide tehdga as carrier
    Journal of Membrane Science, 2008
    Co-Authors: S Panja, R Ruhela, S K Misra, J N Sharma, S C Tripathi, A Dakshinamoorthy
    Abstract:

    Abstract Facilitated transport of Am(III) in nitric acid medium using tetra(2-ethyl hexyl) diglycolamide (TEHDGA) in n-Dodecane as carrier was studied. It was aimed at finding out the physico-chemical model for the transport of Am(III) using TEHDGA/n-Dodecane as carrier under various experimental parameters like feed acidity, carrier concentration, varying strippant, varying membrane pore size, etc. The feed acidity and carrier concentrations were varied from 1 M to 6 M HNO3 and 0.1 M to 0.3 M TEHDGA/n-Dodecane, respectively. The transport of Am(III) increased with increase in feed acidity and carrier concentration reaching maximum at 3 M HNO3 and 0.2 M TEHDGA/n-Dodecane, respectively. Several stripping agents were tested and 0.1 M HNO3 was found to be the most suitable stripping agent for this system. Almost quantitative transport of Am(III) was observed at about 180 min with feed acidity of 3 M HNO3, 0.1 M HNO3 as strippant and 0.2 M TEHDGA/n-Dodecane as carrier. The pore size of the membrane support was varied from 0.20 μm to 5 μm and the permeation coefficient increased with increase in pore size up to 0.45 μm (2.43 × 10−3 cm/s), and then decreased with further increase in pore size. The plot between permeation coefficient vs. (membrane thickness)−1 was linear which showed that the Am(III) transport was membrane diffusion limited. The membrane diffusion coefficient calculated from the graph was found to be 1.27 × 10−6 cm2/s and its theoretical value was 1.22 × 10−6 cm2/s. The stability of the carrier against leaching out of the membrane support as well as the integrity of membrane support was studied over a period of 30 days and was found to be satisfactory within the studied time period.

  • facilitated transport of am iii through a flat sheet supported liquid membrane fsslm containing tetra 2 ethyl hexyl diglycolamide tehdga as carrier
    Journal of Membrane Science, 2008
    Co-Authors: S Panja, R Ruhela, S K Misra, J N Sharma, S C Tripathi, A Dakshinamoorthy
    Abstract:

    Abstract Facilitated transport of Am(III) in nitric acid medium using tetra(2-ethyl hexyl) diglycolamide (TEHDGA) in n-Dodecane as carrier was studied. It was aimed at finding out the physico-chemical model for the transport of Am(III) using TEHDGA/n-Dodecane as carrier under various experimental parameters like feed acidity, carrier concentration, varying strippant, varying membrane pore size, etc. The feed acidity and carrier concentrations were varied from 1 M to 6 M HNO3 and 0.1 M to 0.3 M TEHDGA/n-Dodecane, respectively. The transport of Am(III) increased with increase in feed acidity and carrier concentration reaching maximum at 3 M HNO3 and 0.2 M TEHDGA/n-Dodecane, respectively. Several stripping agents were tested and 0.1 M HNO3 was found to be the most suitable stripping agent for this system. Almost quantitative transport of Am(III) was observed at about 180 min with feed acidity of 3 M HNO3, 0.1 M HNO3 as strippant and 0.2 M TEHDGA/n-Dodecane as carrier. The pore size of the membrane support was varied from 0.20 μm to 5 μm and the permeation coefficient increased with increase in pore size up to 0.45 μm (2.43 × 10−3 cm/s), and then decreased with further increase in pore size. The plot between permeation coefficient vs. (membrane thickness)−1 was linear which showed that the Am(III) transport was membrane diffusion limited. The membrane diffusion coefficient calculated from the graph was found to be 1.27 × 10−6 cm2/s and its theoretical value was 1.22 × 10−6 cm2/s. The stability of the carrier against leaching out of the membrane support as well as the integrity of membrane support was studied over a period of 30 days and was found to be satisfactory within the studied time period.

Javier Fontalvo - One of the best experts on this subject based on the ideXlab platform.

  • Liquid–Liquid Equilibria of Lactic Acid/WaterSolutions in Tri-iso-octylamine/Dodecane/1-Dodecanol at 306.1, 310.1,and 316.1 K. Experimental Data and Prediction
    Journal of Chemical & Engineering Data, 2019
    Co-Authors: Alan D. Pérez, Sneyder Rodríguez-barona, Javier Fontalvo
    Abstract:

    The liquid–liquid equilibria of systems that involves lactic acid in the aqueous phase and tri-iso-octylamine with diluents as Dodecane and 1-dodecanol (active or/and inert) were measured experimentally at three temperatures (306.15, 310.15, and 316.15 K). A previous liquid–liquid equilibrium model that is based on Nernst’s distribution law and mass action law equilibrium equations was extended and generalized for stoichiometric ratios (amine/acid) 1:n. The effect of the diluents and the tertiary amine on the liquid–liquid equilibrium is shown and quantified in terms of the predicted values of the distribution coefficient, chemical equilibrium constants, and temperature. The lactic acid concentration in equilibrium for the organic phase decreases as follows: water/LA/TiOA/1-dodecanol system > water/LA/TiOA/Dodecane/1-dodecanol > system water/LA/TiOA/Dodecane system.

  • liquid liquid equilibria of lactic acid watersolutions in tri iso octylamine Dodecane 1 dodecanol at 306 1 310 1 and 316 1 k experimental data and prediction
    Journal of Chemical & Engineering Data, 2019
    Co-Authors: Alan D. Pérez, Sneyder Rodriguezbarona, Javier Fontalvo
    Abstract:

    The liquid–liquid equilibria of systems that involves lactic acid in the aqueous phase and tri-iso-octylamine with diluents as Dodecane and 1-dodecanol (active or/and inert) were measured experimentally at three temperatures (306.15, 310.15, and 316.15 K). A previous liquid–liquid equilibrium model that is based on Nernst’s distribution law and mass action law equilibrium equations was extended and generalized for stoichiometric ratios (amine/acid) 1:n. The effect of the diluents and the tertiary amine on the liquid–liquid equilibrium is shown and quantified in terms of the predicted values of the distribution coefficient, chemical equilibrium constants, and temperature. The lactic acid concentration in equilibrium for the organic phase decreases as follows: water/LA/TiOA/1-dodecanol system > water/LA/TiOA/Dodecane/1-dodecanol > system water/LA/TiOA/Dodecane system.

S Panja - One of the best experts on this subject based on the ideXlab platform.

  • facilitated transport of am iii through a flat sheet supported liquid membrane fsslm containing tetra 2 ethyl hexyl diglycolamide tehdga as carrier
    Journal of Membrane Science, 2008
    Co-Authors: S Panja, R Ruhela, S K Misra, J N Sharma, S C Tripathi, A Dakshinamoorthy
    Abstract:

    Abstract Facilitated transport of Am(III) in nitric acid medium using tetra(2-ethyl hexyl) diglycolamide (TEHDGA) in n-Dodecane as carrier was studied. It was aimed at finding out the physico-chemical model for the transport of Am(III) using TEHDGA/n-Dodecane as carrier under various experimental parameters like feed acidity, carrier concentration, varying strippant, varying membrane pore size, etc. The feed acidity and carrier concentrations were varied from 1 M to 6 M HNO3 and 0.1 M to 0.3 M TEHDGA/n-Dodecane, respectively. The transport of Am(III) increased with increase in feed acidity and carrier concentration reaching maximum at 3 M HNO3 and 0.2 M TEHDGA/n-Dodecane, respectively. Several stripping agents were tested and 0.1 M HNO3 was found to be the most suitable stripping agent for this system. Almost quantitative transport of Am(III) was observed at about 180 min with feed acidity of 3 M HNO3, 0.1 M HNO3 as strippant and 0.2 M TEHDGA/n-Dodecane as carrier. The pore size of the membrane support was varied from 0.20 μm to 5 μm and the permeation coefficient increased with increase in pore size up to 0.45 μm (2.43 × 10−3 cm/s), and then decreased with further increase in pore size. The plot between permeation coefficient vs. (membrane thickness)−1 was linear which showed that the Am(III) transport was membrane diffusion limited. The membrane diffusion coefficient calculated from the graph was found to be 1.27 × 10−6 cm2/s and its theoretical value was 1.22 × 10−6 cm2/s. The stability of the carrier against leaching out of the membrane support as well as the integrity of membrane support was studied over a period of 30 days and was found to be satisfactory within the studied time period.

  • facilitated transport of am iii through a flat sheet supported liquid membrane fsslm containing tetra 2 ethyl hexyl diglycolamide tehdga as carrier
    Journal of Membrane Science, 2008
    Co-Authors: S Panja, R Ruhela, S K Misra, J N Sharma, S C Tripathi, A Dakshinamoorthy
    Abstract:

    Abstract Facilitated transport of Am(III) in nitric acid medium using tetra(2-ethyl hexyl) diglycolamide (TEHDGA) in n-Dodecane as carrier was studied. It was aimed at finding out the physico-chemical model for the transport of Am(III) using TEHDGA/n-Dodecane as carrier under various experimental parameters like feed acidity, carrier concentration, varying strippant, varying membrane pore size, etc. The feed acidity and carrier concentrations were varied from 1 M to 6 M HNO3 and 0.1 M to 0.3 M TEHDGA/n-Dodecane, respectively. The transport of Am(III) increased with increase in feed acidity and carrier concentration reaching maximum at 3 M HNO3 and 0.2 M TEHDGA/n-Dodecane, respectively. Several stripping agents were tested and 0.1 M HNO3 was found to be the most suitable stripping agent for this system. Almost quantitative transport of Am(III) was observed at about 180 min with feed acidity of 3 M HNO3, 0.1 M HNO3 as strippant and 0.2 M TEHDGA/n-Dodecane as carrier. The pore size of the membrane support was varied from 0.20 μm to 5 μm and the permeation coefficient increased with increase in pore size up to 0.45 μm (2.43 × 10−3 cm/s), and then decreased with further increase in pore size. The plot between permeation coefficient vs. (membrane thickness)−1 was linear which showed that the Am(III) transport was membrane diffusion limited. The membrane diffusion coefficient calculated from the graph was found to be 1.27 × 10−6 cm2/s and its theoretical value was 1.22 × 10−6 cm2/s. The stability of the carrier against leaching out of the membrane support as well as the integrity of membrane support was studied over a period of 30 days and was found to be satisfactory within the studied time period.

S C Tripathi - One of the best experts on this subject based on the ideXlab platform.

  • facilitated transport of am iii through a flat sheet supported liquid membrane fsslm containing tetra 2 ethyl hexyl diglycolamide tehdga as carrier
    Journal of Membrane Science, 2008
    Co-Authors: S Panja, R Ruhela, S K Misra, J N Sharma, S C Tripathi, A Dakshinamoorthy
    Abstract:

    Abstract Facilitated transport of Am(III) in nitric acid medium using tetra(2-ethyl hexyl) diglycolamide (TEHDGA) in n-Dodecane as carrier was studied. It was aimed at finding out the physico-chemical model for the transport of Am(III) using TEHDGA/n-Dodecane as carrier under various experimental parameters like feed acidity, carrier concentration, varying strippant, varying membrane pore size, etc. The feed acidity and carrier concentrations were varied from 1 M to 6 M HNO3 and 0.1 M to 0.3 M TEHDGA/n-Dodecane, respectively. The transport of Am(III) increased with increase in feed acidity and carrier concentration reaching maximum at 3 M HNO3 and 0.2 M TEHDGA/n-Dodecane, respectively. Several stripping agents were tested and 0.1 M HNO3 was found to be the most suitable stripping agent for this system. Almost quantitative transport of Am(III) was observed at about 180 min with feed acidity of 3 M HNO3, 0.1 M HNO3 as strippant and 0.2 M TEHDGA/n-Dodecane as carrier. The pore size of the membrane support was varied from 0.20 μm to 5 μm and the permeation coefficient increased with increase in pore size up to 0.45 μm (2.43 × 10−3 cm/s), and then decreased with further increase in pore size. The plot between permeation coefficient vs. (membrane thickness)−1 was linear which showed that the Am(III) transport was membrane diffusion limited. The membrane diffusion coefficient calculated from the graph was found to be 1.27 × 10−6 cm2/s and its theoretical value was 1.22 × 10−6 cm2/s. The stability of the carrier against leaching out of the membrane support as well as the integrity of membrane support was studied over a period of 30 days and was found to be satisfactory within the studied time period.

  • facilitated transport of am iii through a flat sheet supported liquid membrane fsslm containing tetra 2 ethyl hexyl diglycolamide tehdga as carrier
    Journal of Membrane Science, 2008
    Co-Authors: S Panja, R Ruhela, S K Misra, J N Sharma, S C Tripathi, A Dakshinamoorthy
    Abstract:

    Abstract Facilitated transport of Am(III) in nitric acid medium using tetra(2-ethyl hexyl) diglycolamide (TEHDGA) in n-Dodecane as carrier was studied. It was aimed at finding out the physico-chemical model for the transport of Am(III) using TEHDGA/n-Dodecane as carrier under various experimental parameters like feed acidity, carrier concentration, varying strippant, varying membrane pore size, etc. The feed acidity and carrier concentrations were varied from 1 M to 6 M HNO3 and 0.1 M to 0.3 M TEHDGA/n-Dodecane, respectively. The transport of Am(III) increased with increase in feed acidity and carrier concentration reaching maximum at 3 M HNO3 and 0.2 M TEHDGA/n-Dodecane, respectively. Several stripping agents were tested and 0.1 M HNO3 was found to be the most suitable stripping agent for this system. Almost quantitative transport of Am(III) was observed at about 180 min with feed acidity of 3 M HNO3, 0.1 M HNO3 as strippant and 0.2 M TEHDGA/n-Dodecane as carrier. The pore size of the membrane support was varied from 0.20 μm to 5 μm and the permeation coefficient increased with increase in pore size up to 0.45 μm (2.43 × 10−3 cm/s), and then decreased with further increase in pore size. The plot between permeation coefficient vs. (membrane thickness)−1 was linear which showed that the Am(III) transport was membrane diffusion limited. The membrane diffusion coefficient calculated from the graph was found to be 1.27 × 10−6 cm2/s and its theoretical value was 1.22 × 10−6 cm2/s. The stability of the carrier against leaching out of the membrane support as well as the integrity of membrane support was studied over a period of 30 days and was found to be satisfactory within the studied time period.

R Ruhela - One of the best experts on this subject based on the ideXlab platform.

  • facilitated transport of am iii through a flat sheet supported liquid membrane fsslm containing tetra 2 ethyl hexyl diglycolamide tehdga as carrier
    Journal of Membrane Science, 2008
    Co-Authors: S Panja, R Ruhela, S K Misra, J N Sharma, S C Tripathi, A Dakshinamoorthy
    Abstract:

    Abstract Facilitated transport of Am(III) in nitric acid medium using tetra(2-ethyl hexyl) diglycolamide (TEHDGA) in n-Dodecane as carrier was studied. It was aimed at finding out the physico-chemical model for the transport of Am(III) using TEHDGA/n-Dodecane as carrier under various experimental parameters like feed acidity, carrier concentration, varying strippant, varying membrane pore size, etc. The feed acidity and carrier concentrations were varied from 1 M to 6 M HNO3 and 0.1 M to 0.3 M TEHDGA/n-Dodecane, respectively. The transport of Am(III) increased with increase in feed acidity and carrier concentration reaching maximum at 3 M HNO3 and 0.2 M TEHDGA/n-Dodecane, respectively. Several stripping agents were tested and 0.1 M HNO3 was found to be the most suitable stripping agent for this system. Almost quantitative transport of Am(III) was observed at about 180 min with feed acidity of 3 M HNO3, 0.1 M HNO3 as strippant and 0.2 M TEHDGA/n-Dodecane as carrier. The pore size of the membrane support was varied from 0.20 μm to 5 μm and the permeation coefficient increased with increase in pore size up to 0.45 μm (2.43 × 10−3 cm/s), and then decreased with further increase in pore size. The plot between permeation coefficient vs. (membrane thickness)−1 was linear which showed that the Am(III) transport was membrane diffusion limited. The membrane diffusion coefficient calculated from the graph was found to be 1.27 × 10−6 cm2/s and its theoretical value was 1.22 × 10−6 cm2/s. The stability of the carrier against leaching out of the membrane support as well as the integrity of membrane support was studied over a period of 30 days and was found to be satisfactory within the studied time period.

  • facilitated transport of am iii through a flat sheet supported liquid membrane fsslm containing tetra 2 ethyl hexyl diglycolamide tehdga as carrier
    Journal of Membrane Science, 2008
    Co-Authors: S Panja, R Ruhela, S K Misra, J N Sharma, S C Tripathi, A Dakshinamoorthy
    Abstract:

    Abstract Facilitated transport of Am(III) in nitric acid medium using tetra(2-ethyl hexyl) diglycolamide (TEHDGA) in n-Dodecane as carrier was studied. It was aimed at finding out the physico-chemical model for the transport of Am(III) using TEHDGA/n-Dodecane as carrier under various experimental parameters like feed acidity, carrier concentration, varying strippant, varying membrane pore size, etc. The feed acidity and carrier concentrations were varied from 1 M to 6 M HNO3 and 0.1 M to 0.3 M TEHDGA/n-Dodecane, respectively. The transport of Am(III) increased with increase in feed acidity and carrier concentration reaching maximum at 3 M HNO3 and 0.2 M TEHDGA/n-Dodecane, respectively. Several stripping agents were tested and 0.1 M HNO3 was found to be the most suitable stripping agent for this system. Almost quantitative transport of Am(III) was observed at about 180 min with feed acidity of 3 M HNO3, 0.1 M HNO3 as strippant and 0.2 M TEHDGA/n-Dodecane as carrier. The pore size of the membrane support was varied from 0.20 μm to 5 μm and the permeation coefficient increased with increase in pore size up to 0.45 μm (2.43 × 10−3 cm/s), and then decreased with further increase in pore size. The plot between permeation coefficient vs. (membrane thickness)−1 was linear which showed that the Am(III) transport was membrane diffusion limited. The membrane diffusion coefficient calculated from the graph was found to be 1.27 × 10−6 cm2/s and its theoretical value was 1.22 × 10−6 cm2/s. The stability of the carrier against leaching out of the membrane support as well as the integrity of membrane support was studied over a period of 30 days and was found to be satisfactory within the studied time period.