Adsorption profile of preheated Cr(III)-SCN complexes on polyurethane foam

M. M. Saeed; M. H. Chaudhary; M. Ahmed

doi:10.1023/A:1026278630209

Adsorption profile of preheated Cr(III)-SCN complexes on polyurethane foam

M. M. Saeed^*
, M. H. Chaudhary
, M. Ahmed

^*Corresponding author for this work

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

2 Scopus citations

Abstract

The accumulation of preheated chromium(III)-thiocyanate complexes onto polyurethane foam (PUF) has been studied. The maximum sorption of Cr(III) (7.01^.10^-5M) is occurred at pH 2 from 1.2M thiocyanate solution in 10 minute agitation time using 7.25 mg/ml PUF. The sorption data have been investigated by Langmuir, Freundlich and Dubinin-Radushkevich (D-R) isotherms. The Freundlich parameters 1/n = 0.31 and of K_F = 9.7 ^.10^-4 mol·g^-1, Langmuir constants M = 7.03^.10^-5 mol·g^-1 and of b = 1.5 ^.10⁵ 1·mol^-1 and of D-R constants, C_m = 1.91^.10^-4 mol·g^-1, affinity coefficient β =-0.0023 mol²·kJ^-2 and sorption energy E = 14.7 kJ·mol^-1 have been evaluated. Thermodynamic parameters of enthalpy, entropy and Gibbs free energy suggest the endothermic and spontaneous adsorption of Cr(III)-SCN complex onto PUF at higher temperature. The influence of common anions and cations on the accumulation of chromium-thiocyanate on PUF and possible sorption mechanism of [Cr(SCN)₄]^- species on PUF is discussed.

Original language	English
Pages (from-to)	151-156
Number of pages	6
Journal	Journal of Radioanalytical and Nuclear Chemistry
Volume	258
Issue number	1
DOIs	https://doi.org/10.1023/A:1026278630209
State	Published - Oct 2003
Externally published	Yes

ASJC Scopus subject areas

Analytical Chemistry
Nuclear Energy and Engineering
Radiology Nuclear Medicine and imaging
Pollution
Spectroscopy
Public Health, Environmental and Occupational Health
Health, Toxicology and Mutagenesis

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@article{66c1681cea3e451380083ec824ebb2a9,

title = "Adsorption profile of preheated Cr(III)-SCN complexes on polyurethane foam",

abstract = "The accumulation of preheated chromium(III)-thiocyanate complexes onto polyurethane foam (PUF) has been studied. The maximum sorption of Cr(III) (7.01.10-5M) is occurred at pH 2 from 1.2M thiocyanate solution in 10 minute agitation time using 7.25 mg/ml PUF. The sorption data have been investigated by Langmuir, Freundlich and Dubinin-Radushkevich (D-R) isotherms. The Freundlich parameters 1/n = 0.31 and of KF = 9.7 .10-4 mol·g-1, Langmuir constants M = 7.03.10-5 mol·g-1 and of b = 1.5 .105 1·mol-1 and of D-R constants, Cm = 1.91.10-4 mol·g-1, affinity coefficient β =-0.0023 mol2·kJ-2 and sorption energy E = 14.7 kJ·mol-1 have been evaluated. Thermodynamic parameters of enthalpy, entropy and Gibbs free energy suggest the endothermic and spontaneous adsorption of Cr(III)-SCN complex onto PUF at higher temperature. The influence of common anions and cations on the accumulation of chromium-thiocyanate on PUF and possible sorption mechanism of [Cr(SCN)4]- species on PUF is discussed.",

author = "Saeed, \{M. M.\} and Chaudhary, \{M. H.\} and M. Ahmed",

year = "2003",

month = oct,

doi = "10.1023/A:1026278630209",

language = "English",

volume = "258",

pages = "151--156",

journal = "Journal of Radioanalytical and Nuclear Chemistry",

issn = "0236-5731",

publisher = "Springer Nature",

number = "1",

}

TY - JOUR

T1 - Adsorption profile of preheated Cr(III)-SCN complexes on polyurethane foam

AU - Saeed, M. M.

AU - Chaudhary, M. H.

AU - Ahmed, M.

PY - 2003/10

Y1 - 2003/10

N2 - The accumulation of preheated chromium(III)-thiocyanate complexes onto polyurethane foam (PUF) has been studied. The maximum sorption of Cr(III) (7.01.10-5M) is occurred at pH 2 from 1.2M thiocyanate solution in 10 minute agitation time using 7.25 mg/ml PUF. The sorption data have been investigated by Langmuir, Freundlich and Dubinin-Radushkevich (D-R) isotherms. The Freundlich parameters 1/n = 0.31 and of KF = 9.7 .10-4 mol·g-1, Langmuir constants M = 7.03.10-5 mol·g-1 and of b = 1.5 .105 1·mol-1 and of D-R constants, Cm = 1.91.10-4 mol·g-1, affinity coefficient β =-0.0023 mol2·kJ-2 and sorption energy E = 14.7 kJ·mol-1 have been evaluated. Thermodynamic parameters of enthalpy, entropy and Gibbs free energy suggest the endothermic and spontaneous adsorption of Cr(III)-SCN complex onto PUF at higher temperature. The influence of common anions and cations on the accumulation of chromium-thiocyanate on PUF and possible sorption mechanism of [Cr(SCN)4]- species on PUF is discussed.

AB - The accumulation of preheated chromium(III)-thiocyanate complexes onto polyurethane foam (PUF) has been studied. The maximum sorption of Cr(III) (7.01.10-5M) is occurred at pH 2 from 1.2M thiocyanate solution in 10 minute agitation time using 7.25 mg/ml PUF. The sorption data have been investigated by Langmuir, Freundlich and Dubinin-Radushkevich (D-R) isotherms. The Freundlich parameters 1/n = 0.31 and of KF = 9.7 .10-4 mol·g-1, Langmuir constants M = 7.03.10-5 mol·g-1 and of b = 1.5 .105 1·mol-1 and of D-R constants, Cm = 1.91.10-4 mol·g-1, affinity coefficient β =-0.0023 mol2·kJ-2 and sorption energy E = 14.7 kJ·mol-1 have been evaluated. Thermodynamic parameters of enthalpy, entropy and Gibbs free energy suggest the endothermic and spontaneous adsorption of Cr(III)-SCN complex onto PUF at higher temperature. The influence of common anions and cations on the accumulation of chromium-thiocyanate on PUF and possible sorption mechanism of [Cr(SCN)4]- species on PUF is discussed.

UR - https://www.scopus.com/pages/publications/0142027183

U2 - 10.1023/A:1026278630209

DO - 10.1023/A:1026278630209

M3 - Article

AN - SCOPUS:0142027183

SN - 0236-5731

VL - 258

SP - 151

EP - 156

JO - Journal of Radioanalytical and Nuclear Chemistry

JF - Journal of Radioanalytical and Nuclear Chemistry

IS - 1

ER -

Adsorption profile of preheated Cr(III)-SCN complexes on polyurethane foam

Abstract

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