Adsorption mechanism of Cu(II) in water environment using chitosan-nano zero valent iron-activated carbon composite beads

Md Tajuddin Sikder, Ryo Kubota, Mahmuda Akter, Md. Mostafizur Rahman, Kaniz Fatima Binte Hossain, Md Shiblur Rahaman, Subrata Banik, Toshiyuki Hosokawa, Takeshi Saito, Masaaki Kurasaki

Research output: Contribution to journalArticle

Abstract

Copper ions (Cu(II)) produced from various industries can lead to pollution at toxic levels, eventually finding its way into food chains and resulting in serious health impairment. Among different treatment technologies practiced, adsorption is unique in terms of its versatility and economic feasibility. Here, the removal of Cu(II) was examined using chitosan-nano zero valent iron-activated carbon (CS-NZVI-AC) composite beads. Results indicate that the rate of Cu(II) adsorption onto the CS-NZVI-AC accelerated significantly in comparison with lonechitosan (CS), activated carbon (AC) and zero valent iron (NZVI). Moreover, the hybridization of CS-AC with NZVI endows an increase in the uptake of Cu(II) up to 30% compared to that of CS-AC alone. The adsorption mechanism is understood as chemisorptions along with the active Van der Waals forces, as supported by the best fit of sorption data with pseudo-second order kinetics and Freundlich isotherm model. The adsorption capacity of CS-NZVI-AC for Cu(II) increased with increasing pH of up to 5 and with 25°C water temperature. Thus, it is indicated that this hybrid CS-NZVI-AC composites have great potential for environmental remediation efforts for Cu(II) and other similar heavy metal ions.

Original languageEnglish
Pages (from-to)202-210
Number of pages9
JournalDesalination and Water Treatment
Volume145
DOIs
Publication statusPublished - 1 Mar 2019

Fingerprint

Chitosan
Activated carbon
activated carbon
Iron
adsorption
Adsorption
Composite materials
Water
water
Van der Waals forces
ion
Chemisorption
iron nanoparticle
Heavy ions
food chain
Heavy metals
Metal ions
Isotherms
Sorption
isotherm

Keywords

  • Activated carbon
  • Adsorption
  • Chitosan
  • Equilibrium
  • Kinetic
  • Remediation
  • Zero valent iron

ASJC Scopus subject areas

  • Water Science and Technology
  • Ocean Engineering
  • Pollution

Cite this

Adsorption mechanism of Cu(II) in water environment using chitosan-nano zero valent iron-activated carbon composite beads. / Sikder, Md Tajuddin; Kubota, Ryo; Akter, Mahmuda; Rahman, Md. Mostafizur; Hossain, Kaniz Fatima Binte; Rahaman, Md Shiblur; Banik, Subrata; Hosokawa, Toshiyuki; Saito, Takeshi; Kurasaki, Masaaki.

In: Desalination and Water Treatment, Vol. 145, 01.03.2019, p. 202-210.

Research output: Contribution to journalArticle

Sikder, MT, Kubota, R, Akter, M, Rahman, MM, Hossain, KFB, Rahaman, MS, Banik, S, Hosokawa, T, Saito, T & Kurasaki, M 2019, 'Adsorption mechanism of Cu(II) in water environment using chitosan-nano zero valent iron-activated carbon composite beads' Desalination and Water Treatment, vol. 145, pp. 202-210. https://doi.org/10.5004/dwt.2019.23660
Sikder, Md Tajuddin ; Kubota, Ryo ; Akter, Mahmuda ; Rahman, Md. Mostafizur ; Hossain, Kaniz Fatima Binte ; Rahaman, Md Shiblur ; Banik, Subrata ; Hosokawa, Toshiyuki ; Saito, Takeshi ; Kurasaki, Masaaki. / Adsorption mechanism of Cu(II) in water environment using chitosan-nano zero valent iron-activated carbon composite beads. In: Desalination and Water Treatment. 2019 ; Vol. 145. pp. 202-210.
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