TY - JOUR
T1 - Polymer inclusion membrane containing a tripodal diglycolamide (T-DGA)
T2 - Characterization and sorption isotherm studies
AU - Mahanty, B.N.
AU - Mohapatra, P.K.
AU - Raut, D.R.
AU - Das, D.K.
AU - Behere, P.G.
AU - Afzal, Md
AU - Verboom, W.
N1 - Publisher Copyright:
© 2016 Elsevier Ltd. All rights reserved.
PY - 2016/6/1
Y1 - 2016/6/1
N2 - Polymer inclusion membranes (PIMs) of the composition, 25.6% T-DGA (tripodal diglycolamide), 53.9% NPOE (2-nitrophenyloctyl ether), and 20.5% CTA (cellulose triacetate) were prepared and characterized using thermogravimetric analysis, X-ray diffraction, scanning electron microscopy (SEM), atomic force microscopy (AFM), and transmission infrared mapping microscopy (TIMM) using Fourier transform infrared (FT-IR) spectroscopy. Uptake of Am3+ was found to be higher than that of Eu3+ and >82% uptake of Am3+ was seen with the PIM of the composition mentioned above. The batch sorption study of Eu3+ (used as a surrogate of Am3+) by this PIM was investigated in 1 M HNO3 and the data were fitted with different conventional kinetic and isotherm model equations. The sorption followed pseudo-second order (Ho) kinetic model suggesting a two-step uptake process, a fast chemical reaction followed by a slow diffusion process. The experimental data were best fitted with a three-parameter model, i.e., the Redlich-Peterson isotherm model. A comparison is made with results obtained with T2EHDGA-based PIMs reported earlier.
AB - Polymer inclusion membranes (PIMs) of the composition, 25.6% T-DGA (tripodal diglycolamide), 53.9% NPOE (2-nitrophenyloctyl ether), and 20.5% CTA (cellulose triacetate) were prepared and characterized using thermogravimetric analysis, X-ray diffraction, scanning electron microscopy (SEM), atomic force microscopy (AFM), and transmission infrared mapping microscopy (TIMM) using Fourier transform infrared (FT-IR) spectroscopy. Uptake of Am3+ was found to be higher than that of Eu3+ and >82% uptake of Am3+ was seen with the PIM of the composition mentioned above. The batch sorption study of Eu3+ (used as a surrogate of Am3+) by this PIM was investigated in 1 M HNO3 and the data were fitted with different conventional kinetic and isotherm model equations. The sorption followed pseudo-second order (Ho) kinetic model suggesting a two-step uptake process, a fast chemical reaction followed by a slow diffusion process. The experimental data were best fitted with a three-parameter model, i.e., the Redlich-Peterson isotherm model. A comparison is made with results obtained with T2EHDGA-based PIMs reported earlier.
KW - Kinetic modeling
KW - Membrane characterization
KW - Polymer inclusion membrane
KW - Tripodal diglycolamide
KW - Uptake isotherms
KW - n/a OA procedure
UR - http://www.scopus.com/inward/record.url?scp=84960338068&partnerID=8YFLogxK
U2 - 10.1016/j.jece.2016.03.004
DO - 10.1016/j.jece.2016.03.004
M3 - Article
SN - 2213-2929
VL - 4
SP - 1826
EP - 1838
JO - Journal of environmental chemical engineering
JF - Journal of environmental chemical engineering
IS - 2
ER -