Trace copper(II) ions detection and removal from water using novel ligand modified composite adsorbent

Md Rabiul Awual, Mohamed Ismael, Tsuyoshi Yaita, Sherif A. El-Safty, Hideaki Shiwaku, Yoshihiro Okamoto, Shinichi Suzuki

Research output: Contribution to journalArticle

163 Citations (Scopus)

Abstract

A highly selective mesoporous composite adsorbent is proposed for simultaneous detection and removal of Cu(II) ions in natural waters. The adsorbent was developed using the synthesized ligand 3-(((5-ethoxybenzenethiol)imino)methyl)-salicylic acid (EBMS) immobilization onto mesoporous silica monoliths. The data clarified the nitrogen donor atom in EBMS ligand made the strong and stable complexation mechanism with Cu(II) ions during detection and removal systems. Therefore, Cu(II) bonding with EBMS to enhance color formation and make the ligand as metal-ligand [Cu(II)-EBMS]n+ complexes. The solid material has spherical cavities to showed the rapid response and transport of Cu(II) to network sites easily with high sorption efficiency without loss of cage cavities. The influence of pH, kinetics parameters, limit of detection, Cu(II) sorption capacity, bond distances between ligand and Cu(II) and the effect of eluent for the stripping of Cu(II) ion from adsorbent over elution efficiency were evaluated. The adsorbent offered a simple procedure in ultra-trace Cu(II) sensing optically without using high tech instruments. The adsorbent offered a simple procedure in ultra-trace Cu(II) sensing optically without using high tech instruments. The data also revealed that the adsorbent exhibited high sorption capacity (182.15mg/g) and extreme high selectivity in high concentration ionic competition. The adsorbent materials has retaining their functionality in terms of Cu(II) detection and recovery after multiple reuse cycles without deterioration in its significant performances. Moreover, the present adsorbent was successfully applied to the determination, removal and elution Cu(II) ions in environmental samples.

Original languageEnglish
Pages (from-to)67-76
Number of pages10
JournalChemical Engineering Journal
Volume222
DOIs
Publication statusPublished - 2013 Apr 5
Externally publishedYes

Fingerprint

salicylic acid
Adsorbents
ligand
Copper
Ligands
Ions
copper
Salicylic acid
Salicylic Acid
ion
Water
Composite materials
sorption
cavity
Sorption
water
complexation
immobilization
silica
detection

Keywords

  • Complexation mechanism
  • Cu(II) ions
  • Detection and removal
  • Mesoporous composite adsorbent
  • Reusability

ASJC Scopus subject areas

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

Cite this

Awual, M. R., Ismael, M., Yaita, T., El-Safty, S. A., Shiwaku, H., Okamoto, Y., & Suzuki, S. (2013). Trace copper(II) ions detection and removal from water using novel ligand modified composite adsorbent. Chemical Engineering Journal, 222, 67-76. https://doi.org/10.1016/j.cej.2013.02.042

Trace copper(II) ions detection and removal from water using novel ligand modified composite adsorbent. / Awual, Md Rabiul; Ismael, Mohamed; Yaita, Tsuyoshi; El-Safty, Sherif A.; Shiwaku, Hideaki; Okamoto, Yoshihiro; Suzuki, Shinichi.

In: Chemical Engineering Journal, Vol. 222, 05.04.2013, p. 67-76.

Research output: Contribution to journalArticle

Awual, MR, Ismael, M, Yaita, T, El-Safty, SA, Shiwaku, H, Okamoto, Y & Suzuki, S 2013, 'Trace copper(II) ions detection and removal from water using novel ligand modified composite adsorbent', Chemical Engineering Journal, vol. 222, pp. 67-76. https://doi.org/10.1016/j.cej.2013.02.042
Awual, Md Rabiul ; Ismael, Mohamed ; Yaita, Tsuyoshi ; El-Safty, Sherif A. ; Shiwaku, Hideaki ; Okamoto, Yoshihiro ; Suzuki, Shinichi. / Trace copper(II) ions detection and removal from water using novel ligand modified composite adsorbent. In: Chemical Engineering Journal. 2013 ; Vol. 222. pp. 67-76.
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