Removal of iron from industrial lean methyldiethanolamine solvent by adsorption on sepiolite

Safa Gaber; Mohammad Abu Haija; Pal Priyabrata; Munirasu Selvaraj; Fawzi Banat

doi:10.1080/01496395.2017.1395462

Removal of iron from industrial lean methyldiethanolamine solvent by adsorption on sepiolite

Safa Gaber, Mohammad Abu Haija, Pal Priyabrata, Munirasu Selvaraj, Fawzi Banat

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11 Scopus citations

Abstract

Sepiolite clay was used as an adsorbent for the removal of iron ions from industrial methyldiethanolamine (MDEA) solvent. The raw sepiolite clay was modified by different chemical and thermal treatments, and was characterized by FTIR, XRD, SEM-EDX, and BET-specific surface area analysis. Treating sepiolite with nitric acid significantly improved the adsorption capacity of iron ions from lean MDEA. The experimental equilibrium data were represented by Henry, Freundlich, and Langmuir isotherm models. The thermodynamic parameters indicated that the adsorption of iron ions on sepiolite was spontaneous and endothermic process. The kinetic studies showed that the adsorption followed pseudo-second order model.

Original language	British English
Pages (from-to)	404-416
Number of pages	13
Journal	Separation Science and Technology (Philadelphia)
Volume	53
Issue number	3
DOIs	https://doi.org/10.1080/01496395.2017.1395462
State	Published - 11 Feb 2018

Keywords

adsorption
clay
iron removal
isotherms
natural gas sweetening
Sepiolite

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title = "Removal of iron from industrial lean methyldiethanolamine solvent by adsorption on sepiolite",

abstract = "Sepiolite clay was used as an adsorbent for the removal of iron ions from industrial methyldiethanolamine (MDEA) solvent. The raw sepiolite clay was modified by different chemical and thermal treatments, and was characterized by FTIR, XRD, SEM-EDX, and BET-specific surface area analysis. Treating sepiolite with nitric acid significantly improved the adsorption capacity of iron ions from lean MDEA. The experimental equilibrium data were represented by Henry, Freundlich, and Langmuir isotherm models. The thermodynamic parameters indicated that the adsorption of iron ions on sepiolite was spontaneous and endothermic process. The kinetic studies showed that the adsorption followed pseudo-second order model.",

keywords = "adsorption, clay, iron removal, isotherms, natural gas sweetening, Sepiolite",

author = "Safa Gaber and {Abu Haija}, Mohammad and Pal Priyabrata and Munirasu Selvaraj and Fawzi Banat",

note = "Funding Information: The authors are grateful to Khalifa University of Science and Technology, Petroleum Institute Gas Processing and Materials Science Research Center, Abu Dhabi for funding the project (GRC006). Sincere thanks to GASCO Company (Habshan, Abu Dhabi) for their co-operation and support. Publisher Copyright: {\textcopyright} 2017 Taylor & Francis.",

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doi = "10.1080/01496395.2017.1395462",

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AU - Gaber, Safa

AU - Abu Haija, Mohammad

AU - Priyabrata, Pal

AU - Selvaraj, Munirasu

AU - Banat, Fawzi

N1 - Funding Information: The authors are grateful to Khalifa University of Science and Technology, Petroleum Institute Gas Processing and Materials Science Research Center, Abu Dhabi for funding the project (GRC006). Sincere thanks to GASCO Company (Habshan, Abu Dhabi) for their co-operation and support. Publisher Copyright: © 2017 Taylor & Francis.

PY - 2018/2/11

Y1 - 2018/2/11

N2 - Sepiolite clay was used as an adsorbent for the removal of iron ions from industrial methyldiethanolamine (MDEA) solvent. The raw sepiolite clay was modified by different chemical and thermal treatments, and was characterized by FTIR, XRD, SEM-EDX, and BET-specific surface area analysis. Treating sepiolite with nitric acid significantly improved the adsorption capacity of iron ions from lean MDEA. The experimental equilibrium data were represented by Henry, Freundlich, and Langmuir isotherm models. The thermodynamic parameters indicated that the adsorption of iron ions on sepiolite was spontaneous and endothermic process. The kinetic studies showed that the adsorption followed pseudo-second order model.

AB - Sepiolite clay was used as an adsorbent for the removal of iron ions from industrial methyldiethanolamine (MDEA) solvent. The raw sepiolite clay was modified by different chemical and thermal treatments, and was characterized by FTIR, XRD, SEM-EDX, and BET-specific surface area analysis. Treating sepiolite with nitric acid significantly improved the adsorption capacity of iron ions from lean MDEA. The experimental equilibrium data were represented by Henry, Freundlich, and Langmuir isotherm models. The thermodynamic parameters indicated that the adsorption of iron ions on sepiolite was spontaneous and endothermic process. The kinetic studies showed that the adsorption followed pseudo-second order model.

KW - adsorption

KW - clay

KW - iron removal

KW - isotherms

KW - natural gas sweetening

KW - Sepiolite

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DO - 10.1080/01496395.2017.1395462

M3 - Article

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VL - 53

SP - 404

EP - 416

JO - Separation Science and Technology (Philadelphia)

JF - Separation Science and Technology (Philadelphia)

IS - 3

ER -

Removal of iron from industrial lean methyldiethanolamine solvent by adsorption on sepiolite

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Keywords

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