Study on the removal of heavy metal ions from industry waste by carbon nanotubes: Effect of the surface modification: A review

V. K. Gupta, O. Moradi, I. Tyagi, S. Agarwal, H. Sadegh, R. Shahryari-Ghoshekandi, A. S.H. Makhlouf, M. Goodarzi, A. Garshasbi

Research output: Contribution to journalReview article

96 Citations (Scopus)

Abstract

Removal of noxious materials such as heavy metal ions (which are hazardous above certain ppm concentration) from wastewater is one of the biggest environmental challenges that suffers the economy nowadays. On the basis of their versatility, environmental friendliness, the adsorption was proved to be a most economical and efficient technology, which is used extensively for their removal from the aqueous media. Among the various developed adsorbents used so far, carbon nanotubes (CNTs) show a unique impact on the fast adsorption and rapid removal of noxious impurities from the aqueous source. CNTs festooned on the sources like activated carbon, nanoparticles, and nanocomposities enhanced the efficiency and potential of the adsorbent. Due to their unique structural, electronic, optoelectronic, semiconductor, as well as mechanical, chemical, and physical properties, they have been extensively used to remove heavy metals in wastewater treatment. The adsorption mechanisms are majorly contributed by the chemical interactions between the metal ions and the functional groups present on the surface of the CNTs. Greater the surface area more will be the number of reducing groups hence more attributable to better CNT sorption performances.

Original languageEnglish (US)
Pages (from-to)93-118
Number of pages26
JournalCritical Reviews in Environmental Science and Technology
Volume46
Issue number2
DOIs
StatePublished - Jan 1 2016

Fingerprint

Heavy ions
Heavy metals
Metal ions
Surface treatment
Carbon nanotubes
heavy metal
ion
industry
adsorption
Adsorption
Adsorbents
Industry
Wastewater treatment
Optoelectronic devices
Activated carbon
Chemical properties
Functional groups
functional group
activated carbon
Sorption

Keywords

  • Adsorbent
  • Adsorption
  • Carbon Nanotubes
  • Heavy Metal Ions
  • Surface Modification

ASJC Scopus subject areas

  • Environmental Engineering
  • Water Science and Technology
  • Waste Management and Disposal
  • Pollution

Cite this

Study on the removal of heavy metal ions from industry waste by carbon nanotubes : Effect of the surface modification: A review. / Gupta, V. K.; Moradi, O.; Tyagi, I.; Agarwal, S.; Sadegh, H.; Shahryari-Ghoshekandi, R.; Makhlouf, A. S.H.; Goodarzi, M.; Garshasbi, A.

In: Critical Reviews in Environmental Science and Technology, Vol. 46, No. 2, 01.01.2016, p. 93-118.

Research output: Contribution to journalReview article

Gupta, V. K. ; Moradi, O. ; Tyagi, I. ; Agarwal, S. ; Sadegh, H. ; Shahryari-Ghoshekandi, R. ; Makhlouf, A. S.H. ; Goodarzi, M. ; Garshasbi, A. / Study on the removal of heavy metal ions from industry waste by carbon nanotubes : Effect of the surface modification: A review. In: Critical Reviews in Environmental Science and Technology. 2016 ; Vol. 46, No. 2. pp. 93-118.
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