Adsorptive potential of Acacia nilotica based adsorbent for chromium(VI) from an aqueous phase

Raza Khalid; Zaheer Aslam; Aamir Abbas; Waqar Ahmad; Naveed Ramzan; Reyad Shawabkeh

doi:10.1016/j.cjche.2017.08.017

Adsorptive potential of Acacia nilotica based adsorbent for chromium(VI) from an aqueous phase

Raza Khalid, Zaheer Aslam, Aamir Abbas, Waqar Ahmad, Naveed Ramzan, Reyad Shawabkeh

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

34 Citations (Scopus)

Abstract

The objective of this research was to enhance adsorption capacity of Acacia nilotica (keekar) sawdust for the abatement of chromium bearing wastewater and to investigate the effect of process parameters on adsorption capacity. The sawdust was activated by acid wash and functionalized subsequently with formaldehyde. Functionalization of activated sawdust raised its chromium removal efficiency of almost 10% as compared to its adsorption removal efficiency of HCl treated sawdust in a batch adsorption study. Adsorption kinetic data provided better fitting with pseudo second order model. Maximum adsorption capacity calculated through the best fitting Langmuir model was 6.34 mg·g^{− 1} and 8.2 mg·g^{− 1} for HCl treated and formaldehyde functionalized sawdust adsorbents, respectively. The adsorption of Cr(VI) was endothermic when studied by varying temperature from 20 °C to 50 °C for both activated and functionalized adsorbents.

Original language	English
Pages (from-to)	614-622
Number of pages	9
Journal	Chinese Journal of Chemical Engineering
Volume	26
Issue number	3
DOIs	https://doi.org/10.1016/j.cjche.2017.08.017
Publication status	Published - Mar 2018
Externally published	Yes

Keywords

Acacia nilotica
Adsorption
Chromium
Isotherms
Kinetics
Thermodynamics

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10.1016/j.cjche.2017.08.017

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title = "Adsorptive potential of Acacia nilotica based adsorbent for chromium(VI) from an aqueous phase",

abstract = "The objective of this research was to enhance adsorption capacity of Acacia nilotica (keekar) sawdust for the abatement of chromium bearing wastewater and to investigate the effect of process parameters on adsorption capacity. The sawdust was activated by acid wash and functionalized subsequently with formaldehyde. Functionalization of activated sawdust raised its chromium removal efficiency of almost 10% as compared to its adsorption removal efficiency of HCl treated sawdust in a batch adsorption study. Adsorption kinetic data provided better fitting with pseudo second order model. Maximum adsorption capacity calculated through the best fitting Langmuir model was 6.34 mg·g− 1 and 8.2 mg·g− 1 for HCl treated and formaldehyde functionalized sawdust adsorbents, respectively. The adsorption of Cr(VI) was endothermic when studied by varying temperature from 20 °C to 50 °C for both activated and functionalized adsorbents.",

keywords = "Acacia nilotica, Adsorption, Chromium, Isotherms, Kinetics, Thermodynamics",

author = "Raza Khalid and Zaheer Aslam and Aamir Abbas and Waqar Ahmad and Naveed Ramzan and Reyad Shawabkeh",

year = "2018",

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T1 - Adsorptive potential of Acacia nilotica based adsorbent for chromium(VI) from an aqueous phase

AU - Khalid, Raza

AU - Aslam, Zaheer

AU - Abbas, Aamir

AU - Ahmad, Waqar

AU - Ramzan, Naveed

AU - Shawabkeh, Reyad

PY - 2018/3

Y1 - 2018/3

N2 - The objective of this research was to enhance adsorption capacity of Acacia nilotica (keekar) sawdust for the abatement of chromium bearing wastewater and to investigate the effect of process parameters on adsorption capacity. The sawdust was activated by acid wash and functionalized subsequently with formaldehyde. Functionalization of activated sawdust raised its chromium removal efficiency of almost 10% as compared to its adsorption removal efficiency of HCl treated sawdust in a batch adsorption study. Adsorption kinetic data provided better fitting with pseudo second order model. Maximum adsorption capacity calculated through the best fitting Langmuir model was 6.34 mg·g− 1 and 8.2 mg·g− 1 for HCl treated and formaldehyde functionalized sawdust adsorbents, respectively. The adsorption of Cr(VI) was endothermic when studied by varying temperature from 20 °C to 50 °C for both activated and functionalized adsorbents.

AB - The objective of this research was to enhance adsorption capacity of Acacia nilotica (keekar) sawdust for the abatement of chromium bearing wastewater and to investigate the effect of process parameters on adsorption capacity. The sawdust was activated by acid wash and functionalized subsequently with formaldehyde. Functionalization of activated sawdust raised its chromium removal efficiency of almost 10% as compared to its adsorption removal efficiency of HCl treated sawdust in a batch adsorption study. Adsorption kinetic data provided better fitting with pseudo second order model. Maximum adsorption capacity calculated through the best fitting Langmuir model was 6.34 mg·g− 1 and 8.2 mg·g− 1 for HCl treated and formaldehyde functionalized sawdust adsorbents, respectively. The adsorption of Cr(VI) was endothermic when studied by varying temperature from 20 °C to 50 °C for both activated and functionalized adsorbents.

KW - Acacia nilotica

KW - Adsorption

KW - Chromium

KW - Isotherms

KW - Kinetics

KW - Thermodynamics

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DO - 10.1016/j.cjche.2017.08.017

M3 - Article

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SN - 1004-9541

VL - 26

SP - 614

EP - 622

JO - Chinese Journal of Chemical Engineering

JF - Chinese Journal of Chemical Engineering

IS - 3

ER -

Adsorptive potential of Acacia nilotica based adsorbent for chromium(VI) from an aqueous phase

Abstract

Keywords

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