Gum Arabic dialdehyde thiosemicarbazone chelating resin for removal mercury (II) from aqueous solutions

Adel A. El-Zahhar; Samir Bondock; Mohammad Abu Haija; Sherif M.A.S. Keshk

doi:10.5004/dwt.2019.23917

Gum Arabic dialdehyde thiosemicarbazone chelating resin for removal mercury (II) from aqueous solutions

Adel A. El-Zahhar
, Samir Bondock
, Mohammad Abu Haija
, Sherif M.A.S. Keshk

Chemistry

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

7 Scopus citations

Abstract

In continuation of our efforts to explore the application of a modified natural polymer to remove toxic heavy metals from aqueous solutions, Gum Arabic (Gum acacia [GA]) dialdehyde phenylthiosemicarbazone (GAD-PTSC) chelating resin was prepared through the oxidation of GA followed by a reaction with 4-phenylthiosemicarbazide (PTSC). The structural functionalities, surface morphologies, and thermal stabilities of the resultant adsorbent resin were characterized using Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and thermo-gravimetric analysis. The chelating behavior of the obtained resin with mercury (Hg (II)) in aqueous solution was studied using the batch technique. The adsorption and the kinetic models were adopted to calculate the kinetic and thermodynamic parameters of the adsorption process. The removal percentage of Hg (II) ions on GAD-PTSC reached 97% at pH 5.5, and the maximum adsorbed amount of Hg (II) was found to be 120 mg g^-1 at pH 5.5. The experimental results complied with the second-order kinetic model supporting chemical adsorption with calculated maximum adsorption capacity of 122.10 mg gS. The Langmuir isotherm model showed good fitting with the experimental results with maximum adsorption capacity of 133.33 mg g^-1.

Original language	British English
Pages (from-to)	403-413
Number of pages	11
Journal	Desalination and Water Treatment
Volume	151
DOIs	https://doi.org/10.5004/dwt.2019.23917
State	Published - May 2019

Keywords

Adsorption
Gum Arabic dialdehyde phenylthiosemicarbazone
Hg(II)
Kinetics
Thermodynamics

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10.5004/dwt.2019.23917

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title = "Gum Arabic dialdehyde thiosemicarbazone chelating resin for removal mercury (II) from aqueous solutions",

abstract = "In continuation of our efforts to explore the application of a modified natural polymer to remove toxic heavy metals from aqueous solutions, Gum Arabic (Gum acacia [GA]) dialdehyde phenylthiosemicarbazone (GAD-PTSC) chelating resin was prepared through the oxidation of GA followed by a reaction with 4-phenylthiosemicarbazide (PTSC). The structural functionalities, surface morphologies, and thermal stabilities of the resultant adsorbent resin were characterized using Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and thermo-gravimetric analysis. The chelating behavior of the obtained resin with mercury (Hg (II)) in aqueous solution was studied using the batch technique. The adsorption and the kinetic models were adopted to calculate the kinetic and thermodynamic parameters of the adsorption process. The removal percentage of Hg (II) ions on GAD-PTSC reached 97\% at pH 5.5, and the maximum adsorbed amount of Hg (II) was found to be 120 mg g-1 at pH 5.5. The experimental results complied with the second-order kinetic model supporting chemical adsorption with calculated maximum adsorption capacity of 122.10 mg gS. The Langmuir isotherm model showed good fitting with the experimental results with maximum adsorption capacity of 133.33 mg g-1.",

keywords = "Adsorption, Gum Arabic dialdehyde phenylthiosemicarbazone, Hg(II), Kinetics, Thermodynamics",

author = "El-Zahhar, \{Adel A.\} and Samir Bondock and Haija, \{Mohammad Abu\} and Keshk, \{Sherif M.A.S.\}",

note = "Funding Information: The authors extend their appreciation to the Deanship of Scientific Research at King Khalid University for funding this work through research groups program under grant number R.G.P. 1/19/40. Publisher Copyright: {\textcopyright} 2019 Desalination Publications.",

year = "2019",

month = may,

doi = "10.5004/dwt.2019.23917",

language = "British English",

volume = "151",

pages = "403--413",

journal = "Desalination and Water Treatment",

issn = "1944-3994",

publisher = "Elsevier B.V.",

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T1 - Gum Arabic dialdehyde thiosemicarbazone chelating resin for removal mercury (II) from aqueous solutions

AU - El-Zahhar, Adel A.

AU - Bondock, Samir

AU - Haija, Mohammad Abu

AU - Keshk, Sherif M.A.S.

N1 - Funding Information: The authors extend their appreciation to the Deanship of Scientific Research at King Khalid University for funding this work through research groups program under grant number R.G.P. 1/19/40. Publisher Copyright: © 2019 Desalination Publications.

PY - 2019/5

Y1 - 2019/5

N2 - In continuation of our efforts to explore the application of a modified natural polymer to remove toxic heavy metals from aqueous solutions, Gum Arabic (Gum acacia [GA]) dialdehyde phenylthiosemicarbazone (GAD-PTSC) chelating resin was prepared through the oxidation of GA followed by a reaction with 4-phenylthiosemicarbazide (PTSC). The structural functionalities, surface morphologies, and thermal stabilities of the resultant adsorbent resin were characterized using Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and thermo-gravimetric analysis. The chelating behavior of the obtained resin with mercury (Hg (II)) in aqueous solution was studied using the batch technique. The adsorption and the kinetic models were adopted to calculate the kinetic and thermodynamic parameters of the adsorption process. The removal percentage of Hg (II) ions on GAD-PTSC reached 97% at pH 5.5, and the maximum adsorbed amount of Hg (II) was found to be 120 mg g-1 at pH 5.5. The experimental results complied with the second-order kinetic model supporting chemical adsorption with calculated maximum adsorption capacity of 122.10 mg gS. The Langmuir isotherm model showed good fitting with the experimental results with maximum adsorption capacity of 133.33 mg g-1.

AB - In continuation of our efforts to explore the application of a modified natural polymer to remove toxic heavy metals from aqueous solutions, Gum Arabic (Gum acacia [GA]) dialdehyde phenylthiosemicarbazone (GAD-PTSC) chelating resin was prepared through the oxidation of GA followed by a reaction with 4-phenylthiosemicarbazide (PTSC). The structural functionalities, surface morphologies, and thermal stabilities of the resultant adsorbent resin were characterized using Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and thermo-gravimetric analysis. The chelating behavior of the obtained resin with mercury (Hg (II)) in aqueous solution was studied using the batch technique. The adsorption and the kinetic models were adopted to calculate the kinetic and thermodynamic parameters of the adsorption process. The removal percentage of Hg (II) ions on GAD-PTSC reached 97% at pH 5.5, and the maximum adsorbed amount of Hg (II) was found to be 120 mg g-1 at pH 5.5. The experimental results complied with the second-order kinetic model supporting chemical adsorption with calculated maximum adsorption capacity of 122.10 mg gS. The Langmuir isotherm model showed good fitting with the experimental results with maximum adsorption capacity of 133.33 mg g-1.

KW - Adsorption

KW - Gum Arabic dialdehyde phenylthiosemicarbazone

KW - Hg(II)

KW - Kinetics

KW - Thermodynamics

UR - https://www.scopus.com/pages/publications/85065733978

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DO - 10.5004/dwt.2019.23917

M3 - Article

AN - SCOPUS:85065733978

SN - 1944-3994

VL - 151

SP - 403

EP - 413

JO - Desalination and Water Treatment

JF - Desalination and Water Treatment

ER -

Gum Arabic dialdehyde thiosemicarbazone chelating resin for removal mercury (II) from aqueous solutions

Abstract

Keywords

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