Removal of Congo red from aqueous solution by adsorption using gum ghatti and acrylamide graft copolymer coated with zero valent iron

Siva Mohan Reddy Goddeti; Madhumita Bhaumik; Arjun Maity; Suprakas Sinha Ray

doi:10.1016/j.ijbiomac.2020.01.099

Removal of Congo red from aqueous solution by adsorption using gum ghatti and acrylamide graft copolymer coated with zero valent iron

Siva Mohan Reddy Goddeti
, Madhumita Bhaumik
, Arjun Maity
, Suprakas Sinha Ray

University of Johannesburg
Council for Scientific and Industrial Research

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

50 Citations (Scopus)

Abstract

Gum ghatti (Gg) and acrylamide (AAm) grafted copolymer [poly (Gg-AAm)] coated by zero valent iron (ZVI) was developed to remove toxic Congo red (CR) from waste water. Prepared composite, [poly (Gg-AAm)/ZVI] was characterized by FESEM, TEM, BET, FTIR and XRD. CR adsorption from water using [poly (Gg-AAm)/ZVI] was investigated and several parameters discussed, such as solution pH, contact time, dosage and temperature to find out removal efficiency of polymer composite. The kinetic data for the adsorption of CR followed the pseudo-second-order model and the Langmuir maximum adsorption capacity for CR at pH 7.0 were found to be 153.8, 200 and 250 mg/g at 25, 35 and 45 °C correspondingly. Desorption studies revealed that prepared composite can be used up to three cycles efficiently and thermodynamic parameters such as Gibbs free energy (ΔG⁰), enthalpy (ΔH⁰) and entropy (ΔS⁰) changes showed the adsorption of CR onto [poly (Gg-AAm)/ZVI] was feasible, spontaneous and endothermic.

Original language	English
Pages (from-to)	21-30
Number of pages	10
Journal	International Journal of Biological Macromolecules
Volume	149
DOIs	https://doi.org/10.1016/j.ijbiomac.2020.01.099
Publication status	Published - 15 Apr 2020
Externally published	Yes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 6 Clean Water and Sanitation

Keywords

Adsorption
Congo red
Grafted copolymer
Gum ghatti
Zero valent Iron

ASJC Scopus subject areas

Structural Biology
Biochemistry
Molecular Biology

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10.1016/j.ijbiomac.2020.01.099

Cite this

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title = "Removal of Congo red from aqueous solution by adsorption using gum ghatti and acrylamide graft copolymer coated with zero valent iron",

abstract = "Gum ghatti (Gg) and acrylamide (AAm) grafted copolymer [poly (Gg-AAm)] coated by zero valent iron (ZVI) was developed to remove toxic Congo red (CR) from waste water. Prepared composite, [poly (Gg-AAm)/ZVI] was characterized by FESEM, TEM, BET, FTIR and XRD. CR adsorption from water using [poly (Gg-AAm)/ZVI] was investigated and several parameters discussed, such as solution pH, contact time, dosage and temperature to find out removal efficiency of polymer composite. The kinetic data for the adsorption of CR followed the pseudo-second-order model and the Langmuir maximum adsorption capacity for CR at pH 7.0 were found to be 153.8, 200 and 250 mg/g at 25, 35 and 45 °C correspondingly. Desorption studies revealed that prepared composite can be used up to three cycles efficiently and thermodynamic parameters such as Gibbs free energy (ΔG0), enthalpy (ΔH0) and entropy (ΔS0) changes showed the adsorption of CR onto [poly (Gg-AAm)/ZVI] was feasible, spontaneous and endothermic.",

keywords = "Adsorption, Congo red, Grafted copolymer, Gum ghatti, Zero valent Iron",

author = "Goddeti, \{Siva Mohan Reddy\} and Madhumita Bhaumik and Arjun Maity and Ray, \{Suprakas Sinha\}",

note = "Publisher Copyright: {\textcopyright} 2020",

year = "2020",

month = apr,

day = "15",

doi = "10.1016/j.ijbiomac.2020.01.099",

language = "English",

volume = "149",

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journal = "International Journal of Biological Macromolecules",

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TY - JOUR

T1 - Removal of Congo red from aqueous solution by adsorption using gum ghatti and acrylamide graft copolymer coated with zero valent iron

AU - Goddeti, Siva Mohan Reddy

AU - Bhaumik, Madhumita

AU - Maity, Arjun

AU - Ray, Suprakas Sinha

PY - 2020/4/15

Y1 - 2020/4/15

N2 - Gum ghatti (Gg) and acrylamide (AAm) grafted copolymer [poly (Gg-AAm)] coated by zero valent iron (ZVI) was developed to remove toxic Congo red (CR) from waste water. Prepared composite, [poly (Gg-AAm)/ZVI] was characterized by FESEM, TEM, BET, FTIR and XRD. CR adsorption from water using [poly (Gg-AAm)/ZVI] was investigated and several parameters discussed, such as solution pH, contact time, dosage and temperature to find out removal efficiency of polymer composite. The kinetic data for the adsorption of CR followed the pseudo-second-order model and the Langmuir maximum adsorption capacity for CR at pH 7.0 were found to be 153.8, 200 and 250 mg/g at 25, 35 and 45 °C correspondingly. Desorption studies revealed that prepared composite can be used up to three cycles efficiently and thermodynamic parameters such as Gibbs free energy (ΔG0), enthalpy (ΔH0) and entropy (ΔS0) changes showed the adsorption of CR onto [poly (Gg-AAm)/ZVI] was feasible, spontaneous and endothermic.

AB - Gum ghatti (Gg) and acrylamide (AAm) grafted copolymer [poly (Gg-AAm)] coated by zero valent iron (ZVI) was developed to remove toxic Congo red (CR) from waste water. Prepared composite, [poly (Gg-AAm)/ZVI] was characterized by FESEM, TEM, BET, FTIR and XRD. CR adsorption from water using [poly (Gg-AAm)/ZVI] was investigated and several parameters discussed, such as solution pH, contact time, dosage and temperature to find out removal efficiency of polymer composite. The kinetic data for the adsorption of CR followed the pseudo-second-order model and the Langmuir maximum adsorption capacity for CR at pH 7.0 were found to be 153.8, 200 and 250 mg/g at 25, 35 and 45 °C correspondingly. Desorption studies revealed that prepared composite can be used up to three cycles efficiently and thermodynamic parameters such as Gibbs free energy (ΔG0), enthalpy (ΔH0) and entropy (ΔS0) changes showed the adsorption of CR onto [poly (Gg-AAm)/ZVI] was feasible, spontaneous and endothermic.

KW - Adsorption

KW - Congo red

KW - Grafted copolymer

KW - Gum ghatti

KW - Zero valent Iron

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DO - 10.1016/j.ijbiomac.2020.01.099

M3 - Article

C2 - 31981661

AN - SCOPUS:85078411681

SN - 0141-8130

VL - 149

SP - 21

EP - 30

JO - International Journal of Biological Macromolecules

JF - International Journal of Biological Macromolecules

ER -

Removal of Congo red from aqueous solution by adsorption using gum ghatti and acrylamide graft copolymer coated with zero valent iron

Abstract

UN SDGs

Keywords

ASJC Scopus subject areas

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