Enhanced adsorptive performance of Cr(VI) onto layered double hydroxide-bentonite composite: Isotherm, kinetic and thermodynamic studies

Nabeel Jarrah; Nuhu Dalhat Mu'azu; Mukarram Zubair; Mamdouh Al-Harthi

doi:10.1080/01496395.2019.1614955

Enhanced adsorptive performance of Cr(VI) onto layered double hydroxide-bentonite composite: Isotherm, kinetic and thermodynamic studies

Nabeel Jarrah^*
, Nuhu Dalhat Mu'azu
, Mukarram Zubair
, Mamdouh Al-Harthi

^*Corresponding author for this work

Environmental Engineering Department

University of Mutah
King Fahd University of Petroleum and Minerals

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

32 Scopus citations

Abstract

In this work, cobalt-aluminum-layered double hydroxide (CoAl) and its bentonite composite (Bent-CoAl) were utilized for adsorption of Cr(VI) from water. Incorporation of bentonite into layers of CoAl resulted in significant improvement in the adsorptive performance with increased BET surface area, without damaging LDH structure. The adsorption process was described by Freundlich isotherm and pseudo-second-order kinetic models. The mechanism of Cr(VI) sorption mainly involved electrostatic and chemical interactions with maximum Cr(VI) sorption value of 211.86 mg/g. This suggests that synergistic effect of bentonite into CoAl provided a superior adsorbent for decontamination of heavy metals.

Original language	English
Pages (from-to)	1897-1909
Number of pages	13
Journal	Separation Science and Technology (Philadelphia)
Volume	55
Issue number	11
DOIs	https://doi.org/10.1080/01496395.2019.1614955
State	Published - 23 Jul 2020

Keywords

adsorption thermodynamic
Bentonite incorporated layered double hydroxide
Chromium(VI) removal
isotherms and kinetics studies

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10.1080/01496395.2019.1614955

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title = "Enhanced adsorptive performance of Cr(VI) onto layered double hydroxide-bentonite composite: Isotherm, kinetic and thermodynamic studies",

abstract = "In this work, cobalt-aluminum-layered double hydroxide (CoAl) and its bentonite composite (Bent-CoAl) were utilized for adsorption of Cr(VI) from water. Incorporation of bentonite into layers of CoAl resulted in significant improvement in the adsorptive performance with increased BET surface area, without damaging LDH structure. The adsorption process was described by Freundlich isotherm and pseudo-second-order kinetic models. The mechanism of Cr(VI) sorption mainly involved electrostatic and chemical interactions with maximum Cr(VI) sorption value of 211.86 mg/g. This suggests that synergistic effect of bentonite into CoAl provided a superior adsorbent for decontamination of heavy metals.",

keywords = "adsorption thermodynamic, Bentonite incorporated layered double hydroxide, Chromium(VI) removal, isotherms and kinetics studies",

author = "Nabeel Jarrah and Mu'azu, \{Nuhu Dalhat\} and Mukarram Zubair and Mamdouh Al-Harthi",

note = "Publisher Copyright: {\textcopyright} 2019, {\textcopyright} 2019 Taylor \& Francis Group, LLC.",

year = "2020",

month = jul,

day = "23",

doi = "10.1080/01496395.2019.1614955",

language = "English",

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TY - JOUR

T1 - Enhanced adsorptive performance of Cr(VI) onto layered double hydroxide-bentonite composite

T2 - Isotherm, kinetic and thermodynamic studies

AU - Jarrah, Nabeel

AU - Mu'azu, Nuhu Dalhat

AU - Zubair, Mukarram

AU - Al-Harthi, Mamdouh

PY - 2020/7/23

Y1 - 2020/7/23

N2 - In this work, cobalt-aluminum-layered double hydroxide (CoAl) and its bentonite composite (Bent-CoAl) were utilized for adsorption of Cr(VI) from water. Incorporation of bentonite into layers of CoAl resulted in significant improvement in the adsorptive performance with increased BET surface area, without damaging LDH structure. The adsorption process was described by Freundlich isotherm and pseudo-second-order kinetic models. The mechanism of Cr(VI) sorption mainly involved electrostatic and chemical interactions with maximum Cr(VI) sorption value of 211.86 mg/g. This suggests that synergistic effect of bentonite into CoAl provided a superior adsorbent for decontamination of heavy metals.

AB - In this work, cobalt-aluminum-layered double hydroxide (CoAl) and its bentonite composite (Bent-CoAl) were utilized for adsorption of Cr(VI) from water. Incorporation of bentonite into layers of CoAl resulted in significant improvement in the adsorptive performance with increased BET surface area, without damaging LDH structure. The adsorption process was described by Freundlich isotherm and pseudo-second-order kinetic models. The mechanism of Cr(VI) sorption mainly involved electrostatic and chemical interactions with maximum Cr(VI) sorption value of 211.86 mg/g. This suggests that synergistic effect of bentonite into CoAl provided a superior adsorbent for decontamination of heavy metals.

KW - adsorption thermodynamic

KW - Bentonite incorporated layered double hydroxide

KW - Chromium(VI) removal

KW - isotherms and kinetics studies

UR - https://www.scopus.com/pages/publications/85065978424

U2 - 10.1080/01496395.2019.1614955

DO - 10.1080/01496395.2019.1614955

M3 - Article

AN - SCOPUS:85065978424

SN - 0149-6395

VL - 55

SP - 1897

EP - 1909

JO - Separation Science and Technology (Philadelphia)

JF - Separation Science and Technology (Philadelphia)

IS - 11

ER -

Enhanced adsorptive performance of Cr(VI) onto layered double hydroxide-bentonite composite: Isotherm, kinetic and thermodynamic studies

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Keywords

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