Mobility and plant-availability of Cd(II) and Pb(II) adsorbed on zeolite and bentonite

Mohsen Hamidpour, Majid Afyuni, Mahmoud Kalbasi, Amir H. Khoshgoftarmanes, Vassilis J. Inglezakis

Research output: Contribution to journalArticle

46 Citations (Scopus)

Abstract

The objective of this work was to study the desorption behaviour and plant-availability of Cd(II) and Pb(II) adsorbed on zeolite and bentonite in a batch and a pot (sand) culture experiment. In a sequential desorption experiment Cd(II) and Pb(II) desorption from the zeolite (at 50, 75 and 100% of maximum adsorption capacity, SCmax) equilibrated with 0.01M Ca(NO3)2 was lower as compared to bentonite at all the metal ion loading rates. Amounts of 3, 14 and 31% of the initially adsorbed Pb(II) were desorbed from the bentonite but only 1, 3 and 5% from the zeolite. The corresponding desorbed quantities of Cd(II) were 53, 65 and 71% for bentonite and 41, 33 and 21% for zeolite. In the pot (sand) culture experiments in a greenhouse, corn seedlings were planted in pots filled with quartz sand mixed with zeolite or bentonite enriched with Cd(II) or Pb(II). The concentration of Cd(II) and Pb(II) in the corn roots and shoots grown in the enriched bentonite-sand culture system was significantly higher than those planted in the enriched zeolite-sand culture indicating a stronger immobilizing of Cd(II) and Pb(II) by the zeolite.

Original languageEnglish
Pages (from-to)342-348
Number of pages7
JournalApplied Clay Science
Volume48
Issue number3
DOIs
Publication statusPublished - Apr 2010
Externally publishedYes

Fingerprint

Bentonite
Zeolites
bentonite
zeolite
Availability
Sand
sand
Desorption
desorption
maize
Quartz
experiment
Experiments
Greenhouses
Metal ions
shoot
seedling
quartz
adsorption
Adsorption

Keywords

  • Bentonite
  • Cd(II)
  • Mobility
  • Pb(II)
  • Plant-availability
  • Zeolite

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geology

Cite this

Mobility and plant-availability of Cd(II) and Pb(II) adsorbed on zeolite and bentonite. / Hamidpour, Mohsen; Afyuni, Majid; Kalbasi, Mahmoud; Khoshgoftarmanes, Amir H.; Inglezakis, Vassilis J.

In: Applied Clay Science, Vol. 48, No. 3, 04.2010, p. 342-348.

Research output: Contribution to journalArticle

Hamidpour, Mohsen ; Afyuni, Majid ; Kalbasi, Mahmoud ; Khoshgoftarmanes, Amir H. ; Inglezakis, Vassilis J. / Mobility and plant-availability of Cd(II) and Pb(II) adsorbed on zeolite and bentonite. In: Applied Clay Science. 2010 ; Vol. 48, No. 3. pp. 342-348.
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