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Selective Recovery of a Pyridine Derivative from an Aqueous Waste Stream Containing Acetic Acid and Succinonitrile With Solvent Impregnated Resins

Selective Recovery of a Pyridine Derivative from an Aqueous Waste Stream Containing Acetic Acid and Succinonitrile With Solvent Impregnated Resins, J. Bokhove, T. J. Visser, B. Schuur, and A. B. de Haan. Reactive & Functional Polymers 2015, 86 , 67–79.

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Abstract

Solvent impregnated resins (SIRs) were evaluated for the recovery of pyridine derivatives from an aqueous waste-stream containing also acetic acid and succinonitrile. For this purpose, a new solvent was developed, synthesized and impregnated in Amberlite XAD4. Sorption studies were used to determine the capacity, selectivity and the mass-transfer rate. A high capacity of 21 g 4-cyanopyridine (CP) per kg SIR was found, with very high selectivity toward CP over the other solutes of at least 570. A modified Langmuir equation could describe the equilibrium sorption isotherm. Both the linear driving force model and a Fickian diffusion model were evaluated. The Fick-model described both regeneration and loading best. The CP-diffusivity through the solvent phase was estimated at 6.53.10(-13) +/- 2.5% m(2) s(-1). The model was validated using fixed-bed column experiments. The R-2 values for this model ranged between 0.94 at a flow rate of 5 mL/min and 0.99 at a flow rate of 1 mL/min during the loading cycle. Due to mass-transfer limitations the breakthrough profiles were broad and breakthrough occurred after 5 or 23 bed volumes, for flow rates of 5 and 1 mL/min, respectively. Both acetic acid and succinonitrile broke through immediately due to the very high CP-selectivity of the SIR. (C) 2014 Elsevier B.V. All rights reserved.

BibTeX

@article{ ISI:000348086200009,
Author = {Bokhove, J. and Visser, T. J. and Schuur, B. and de Haan, A. B.},
Title = {Selective Recovery of a Pyridine Derivative from an Aqueous Waste Stream Containing Acetic Acid and Succinonitrile With Solvent Impregnated Resins},
Journal = {Reactive \& Functional Polymers},
Year = {2015},
Volume = {86},
Pages = {67-79},
Month = {},
Abstract = {Solvent impregnated resins (SIRs) were evaluated for the recovery of pyridine derivatives from an aqueous waste-stream containing also acetic acid and succinonitrile. For this purpose, a new solvent was developed, synthesized and impregnated in Amberlite XAD4. Sorption studies were used to determine the capacity, selectivity and the mass-transfer rate. A high capacity of 21 g 4-cyanopyridine (CP) per kg SIR was found, with very high selectivity toward CP over the other solutes of at least 570. A modified Langmuir equation could describe the equilibrium sorption isotherm. Both the linear driving force model and a Fickian diffusion model were evaluated. The Fick-model described both regeneration and loading best. The CP-diffusivity through the solvent phase was estimated at 6.53.10(-13) +/- 2.5\% m(2) s(-1). The model was validated using fixed-bed column experiments. The R-2 values for this model ranged between 0.94 at a flow rate of 5 mL/min and 0.99 at a flow rate of 1 mL/min during the loading cycle. Due to mass-transfer limitations the breakthrough profiles were broad and breakthrough occurred after 5 or 23 bed volumes, for flow rates of 5 and 1 mL/min, respectively. Both acetic acid and succinonitrile broke through immediately due to the very high CP-selectivity of the SIR. (C) 2014 Elsevier B.V. All rights reserved.},
DOI = {10.1016/j.reactfunctpolym.2014.11.007},
ISSN = {1381-5148},
EISSN = {1873-166X},
Unique-ID = {ISI:000348086200009},
}

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