Zinc adsorption-desorption isotherms: Possible effects on the calcareous vertisol soils from Jordan

Muhanned A. Hararah, Farah Al-Nasir, Tayel El-Hasan*, Ala'a H. Al-Muhtaseb

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Calcareous vertisol soil is the dominant agricultural soil type and covers over 80% of the agricultural cultivated land in Jordan. This type of soil is characterized by its high pH and CaCO 3 content, which made the heavy metals including Zn to be oxidized and adsorbed onto soil. Therefore, this type of soil is regarded as potentially Zn deficient. The effect of Zn initial concentration and average rainfall on the Zn adsorption and desorption from three types of calcareous vertisol soils has been examined. The amount of Zn adsorbed and desorbed at equilibrium increased with increasing Zn initial concentration for each of the three investigated soils. However, the percentage of adsorption and desorption decreased as the initial concentration of Zn ions increased. Moreover, results showed that rainfall has no influence on the behavior of Zn in the calcareous vertisol soils. Freundlich and Redlich-Peterson models provide the best representation of the experimental data, followed by the Langmuir model.

Original languageEnglish
Pages (from-to)2079-2085
Number of pages7
JournalEnvironmental Earth Sciences
Volume65
Issue number7
DOIs
Publication statusPublished - Apr 2012

Keywords

  • Adsorption
  • Calcareous vertisol soil
  • Desorption
  • Isotherm models
  • Zinc deficiency

ASJC Scopus subject areas

  • Earth-Surface Processes
  • Geology
  • Global and Planetary Change
  • Pollution
  • Water Science and Technology
  • Environmental Chemistry
  • Soil Science

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