Determination of Pitzer Parameters for 1-1 Nitrate and 1-2 Sulfate Solutions from Freezing Point Data

Mehdi Hasan; Marjatta Louhi-Kultanen

doi:10.1002/ceat.201400202

Determination of Pitzer Parameters for 1-1 Nitrate and 1-2 Sulfate Solutions from Freezing Point Data

Mehdi Hasan^*, Marjatta Louhi-Kultanen

^*Corresponding author for this work

Not published at Aalto University

Research output: Contribution to journal › Article › Scientific › peer-review

6 Citations (Scopus)

Abstract

Freezing point depression (FDP) modeling was performed for selected aqueous nitrate and sulfate salt solutions to evaluate Pitzer ion interaction parameter values at 273.15K. 1-1 and 1-2 electrolyte solutions of NaNO₃, KNO₃, NH₄NO₃, Na₂SO₄, K₂SO₄, and (NH₄)₂SO₄ were studied. New Pitzer parameter values of β⁰, β¹, and C^φ{symbol} were obtained for the studied electrolyte solutions. FDP modeling was also used to determine temperature derivatives of interaction parameters for the Pitzer model for selected salt solutions. Osmotic and activity coefficients using the new parameter values are also presented.

Original language	English
Pages (from-to)	1340-1346
Number of pages	7
Journal	Chemical Engineering and Technology
Volume	37
Issue number	8
DOIs	https://doi.org/10.1002/ceat.201400202
Publication status	Published - 2014
MoE publication type	A1 Journal article-refereed

Keywords

Freeze crystallization
Freezing point depression
Ion interaction parameter
Pitzer model
Solid-liquid equilibrium

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title = "Determination of Pitzer Parameters for 1-1 Nitrate and 1-2 Sulfate Solutions from Freezing Point Data",

abstract = "Freezing point depression (FDP) modeling was performed for selected aqueous nitrate and sulfate salt solutions to evaluate Pitzer ion interaction parameter values at 273.15K. 1-1 and 1-2 electrolyte solutions of NaNO3, KNO3, NH4NO3, Na2SO4, K2SO4, and (NH4)2SO4 were studied. New Pitzer parameter values of β0, β1, and Cφ{symbol} were obtained for the studied electrolyte solutions. FDP modeling was also used to determine temperature derivatives of interaction parameters for the Pitzer model for selected salt solutions. Osmotic and activity coefficients using the new parameter values are also presented.",

keywords = "Freeze crystallization, Freezing point depression, Ion interaction parameter, Pitzer model, Solid-liquid equilibrium",

author = "Mehdi Hasan and Marjatta Louhi-Kultanen",

year = "2014",

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language = "English",

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T1 - Determination of Pitzer Parameters for 1-1 Nitrate and 1-2 Sulfate Solutions from Freezing Point Data

AU - Hasan, Mehdi

AU - Louhi-Kultanen, Marjatta

PY - 2014

Y1 - 2014

N2 - Freezing point depression (FDP) modeling was performed for selected aqueous nitrate and sulfate salt solutions to evaluate Pitzer ion interaction parameter values at 273.15K. 1-1 and 1-2 electrolyte solutions of NaNO3, KNO3, NH4NO3, Na2SO4, K2SO4, and (NH4)2SO4 were studied. New Pitzer parameter values of β0, β1, and Cφ{symbol} were obtained for the studied electrolyte solutions. FDP modeling was also used to determine temperature derivatives of interaction parameters for the Pitzer model for selected salt solutions. Osmotic and activity coefficients using the new parameter values are also presented.

AB - Freezing point depression (FDP) modeling was performed for selected aqueous nitrate and sulfate salt solutions to evaluate Pitzer ion interaction parameter values at 273.15K. 1-1 and 1-2 electrolyte solutions of NaNO3, KNO3, NH4NO3, Na2SO4, K2SO4, and (NH4)2SO4 were studied. New Pitzer parameter values of β0, β1, and Cφ{symbol} were obtained for the studied electrolyte solutions. FDP modeling was also used to determine temperature derivatives of interaction parameters for the Pitzer model for selected salt solutions. Osmotic and activity coefficients using the new parameter values are also presented.

KW - Freeze crystallization

KW - Freezing point depression

KW - Ion interaction parameter

KW - Pitzer model

KW - Solid-liquid equilibrium

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DO - 10.1002/ceat.201400202

M3 - Article

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VL - 37

SP - 1340

EP - 1346

JO - Chemical Engineering and Technology

JF - Chemical Engineering and Technology

SN - 0930-7516

IS - 8

ER -

Determination of Pitzer Parameters for 1-1 Nitrate and 1-2 Sulfate Solutions from Freezing Point Data

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Keywords

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