Synthesis and characterization of a new starch/SnO2 nanocomposite for efficient adsorption of toxic Hg2+ metal ion

Mu Naushad, Tansir Ahamad, Gaurav Sharma, Ala'a H. Al-Muhtaseb, Ahmad B. Albadarin, Mohammad M. Alam, Zeid A. ALOthman, Saad M. Alshehri, Ayman A. Ghfar

Research output: Contribution to journalArticle

165 Citations (Scopus)

Abstract

In this study, starch based nanocomposite (starch/SnO2) was synthesized and used as an effective adsorbent for the removal of Hg2+ from aqueous medium. The as-prepared starch/SnO2 nanocomposite was characterized by means of the XPS, XRD, BET, FTIR, SEM and TEM analyses. The effects of contact time, pH, initial Hg2+ concentration and temperature on the adsorption performance of starch/SnO2 nanocomposite were investigated thoroughly. The experimental results showed that starch/SnO2 nanocomposite had high ability to remove Hg2+ ion from aqueous medium. The adsorption of Hg2+ was maximum at the pH 6 and equilibrium was achieved within 60 min. The pseudo-second-order equation represented the adsorption kinetics with high correlation coefficient (>0.998) and the Freundlich isotherm model fitted the adsorption data better than the Langmuir. The maximum adsorption capacity was found to be 192 mg g-1 at 25 °C which was increased with the temperature, indicated the endothermic adsorption. The feasibility of Hg2+ adsorption onto starch/SnO2 nanocomposite was also studied thermodynamically and the results showed that the adsorption was spontaneous and chemical in nature. The adsorption capacity of the regenerated adsorbents could still be maintained at 94% by the fourth adsorption-desorption cycle.

Original languageEnglish
Pages (from-to)306-316
Number of pages11
JournalChemical Engineering Journal
Volume300
DOIs
Publication statusPublished - Sep 15 2016

Fingerprint

Poisons
Starch
starch
Metal ions
Nanocomposites
adsorption
Adsorption
ion
Adsorbents
toxic metal
X-ray spectroscopy
Isotherms
transmission electron microscopy
Desorption
desorption
isotherm
X ray photoelectron spectroscopy
temperature
scanning electron microscopy
X-ray diffraction

Keywords

  • Adsorption
  • Kinetics
  • Regeneration
  • Starch/SnO nanocomposite
  • Toxic metal ion

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)
  • Industrial and Manufacturing Engineering
  • Environmental Chemistry

Cite this

Synthesis and characterization of a new starch/SnO2 nanocomposite for efficient adsorption of toxic Hg2+ metal ion. / Naushad, Mu; Ahamad, Tansir; Sharma, Gaurav; Al-Muhtaseb, Ala'a H.; Albadarin, Ahmad B.; Alam, Mohammad M.; ALOthman, Zeid A.; Alshehri, Saad M.; Ghfar, Ayman A.

In: Chemical Engineering Journal, Vol. 300, 15.09.2016, p. 306-316.

Research output: Contribution to journalArticle

Naushad, Mu ; Ahamad, Tansir ; Sharma, Gaurav ; Al-Muhtaseb, Ala'a H. ; Albadarin, Ahmad B. ; Alam, Mohammad M. ; ALOthman, Zeid A. ; Alshehri, Saad M. ; Ghfar, Ayman A. / Synthesis and characterization of a new starch/SnO2 nanocomposite for efficient adsorption of toxic Hg2+ metal ion. In: Chemical Engineering Journal. 2016 ; Vol. 300. pp. 306-316.
@article{58b412c1149741c6bd76bc7a63ea65d4,
title = "Synthesis and characterization of a new starch/SnO2 nanocomposite for efficient adsorption of toxic Hg2+ metal ion",
abstract = "In this study, starch based nanocomposite (starch/SnO2) was synthesized and used as an effective adsorbent for the removal of Hg2+ from aqueous medium. The as-prepared starch/SnO2 nanocomposite was characterized by means of the XPS, XRD, BET, FTIR, SEM and TEM analyses. The effects of contact time, pH, initial Hg2+ concentration and temperature on the adsorption performance of starch/SnO2 nanocomposite were investigated thoroughly. The experimental results showed that starch/SnO2 nanocomposite had high ability to remove Hg2+ ion from aqueous medium. The adsorption of Hg2+ was maximum at the pH 6 and equilibrium was achieved within 60 min. The pseudo-second-order equation represented the adsorption kinetics with high correlation coefficient (>0.998) and the Freundlich isotherm model fitted the adsorption data better than the Langmuir. The maximum adsorption capacity was found to be 192 mg g-1 at 25 °C which was increased with the temperature, indicated the endothermic adsorption. The feasibility of Hg2+ adsorption onto starch/SnO2 nanocomposite was also studied thermodynamically and the results showed that the adsorption was spontaneous and chemical in nature. The adsorption capacity of the regenerated adsorbents could still be maintained at 94{\%} by the fourth adsorption-desorption cycle.",
keywords = "Adsorption, Kinetics, Regeneration, Starch/SnO nanocomposite, Toxic metal ion",
author = "Mu Naushad and Tansir Ahamad and Gaurav Sharma and Al-Muhtaseb, {Ala'a H.} and Albadarin, {Ahmad B.} and Alam, {Mohammad M.} and ALOthman, {Zeid A.} and Alshehri, {Saad M.} and Ghfar, {Ayman A.}",
year = "2016",
month = "9",
day = "15",
doi = "10.1016/j.cej.2016.04.084",
language = "English",
volume = "300",
pages = "306--316",
journal = "Chemical Engineering Journal",
issn = "1385-8947",
publisher = "Elsevier",

}

TY - JOUR

T1 - Synthesis and characterization of a new starch/SnO2 nanocomposite for efficient adsorption of toxic Hg2+ metal ion

AU - Naushad, Mu

AU - Ahamad, Tansir

AU - Sharma, Gaurav

AU - Al-Muhtaseb, Ala'a H.

AU - Albadarin, Ahmad B.

AU - Alam, Mohammad M.

AU - ALOthman, Zeid A.

AU - Alshehri, Saad M.

AU - Ghfar, Ayman A.

PY - 2016/9/15

Y1 - 2016/9/15

N2 - In this study, starch based nanocomposite (starch/SnO2) was synthesized and used as an effective adsorbent for the removal of Hg2+ from aqueous medium. The as-prepared starch/SnO2 nanocomposite was characterized by means of the XPS, XRD, BET, FTIR, SEM and TEM analyses. The effects of contact time, pH, initial Hg2+ concentration and temperature on the adsorption performance of starch/SnO2 nanocomposite were investigated thoroughly. The experimental results showed that starch/SnO2 nanocomposite had high ability to remove Hg2+ ion from aqueous medium. The adsorption of Hg2+ was maximum at the pH 6 and equilibrium was achieved within 60 min. The pseudo-second-order equation represented the adsorption kinetics with high correlation coefficient (>0.998) and the Freundlich isotherm model fitted the adsorption data better than the Langmuir. The maximum adsorption capacity was found to be 192 mg g-1 at 25 °C which was increased with the temperature, indicated the endothermic adsorption. The feasibility of Hg2+ adsorption onto starch/SnO2 nanocomposite was also studied thermodynamically and the results showed that the adsorption was spontaneous and chemical in nature. The adsorption capacity of the regenerated adsorbents could still be maintained at 94% by the fourth adsorption-desorption cycle.

AB - In this study, starch based nanocomposite (starch/SnO2) was synthesized and used as an effective adsorbent for the removal of Hg2+ from aqueous medium. The as-prepared starch/SnO2 nanocomposite was characterized by means of the XPS, XRD, BET, FTIR, SEM and TEM analyses. The effects of contact time, pH, initial Hg2+ concentration and temperature on the adsorption performance of starch/SnO2 nanocomposite were investigated thoroughly. The experimental results showed that starch/SnO2 nanocomposite had high ability to remove Hg2+ ion from aqueous medium. The adsorption of Hg2+ was maximum at the pH 6 and equilibrium was achieved within 60 min. The pseudo-second-order equation represented the adsorption kinetics with high correlation coefficient (>0.998) and the Freundlich isotherm model fitted the adsorption data better than the Langmuir. The maximum adsorption capacity was found to be 192 mg g-1 at 25 °C which was increased with the temperature, indicated the endothermic adsorption. The feasibility of Hg2+ adsorption onto starch/SnO2 nanocomposite was also studied thermodynamically and the results showed that the adsorption was spontaneous and chemical in nature. The adsorption capacity of the regenerated adsorbents could still be maintained at 94% by the fourth adsorption-desorption cycle.

KW - Adsorption

KW - Kinetics

KW - Regeneration

KW - Starch/SnO nanocomposite

KW - Toxic metal ion

UR - http://www.scopus.com/inward/record.url?scp=84964938511&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84964938511&partnerID=8YFLogxK

U2 - 10.1016/j.cej.2016.04.084

DO - 10.1016/j.cej.2016.04.084

M3 - Article

VL - 300

SP - 306

EP - 316

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

SN - 1385-8947

ER -