Adsorption characteristics of Cu and Ni on Irish peat moss

Bhaskar Sen Gupta, M. Curran, Shameem Hasan, T.K. Ghosh

    Research output: Contribution to journalArticle

    Abstract

    Peat has been widely used as a low cost adsorbent to remove a variety of materials including organic compounds and heavy metals from water. Various functional groups in lignin allow such compounds to bind on active sites of peat. The adsorption of Cu2+ and Ni2+ from aqueous solutions on Irish peat moss was studied both as a pure ion and from their binary mixtures under both equilibrium and dynamic conditions in the concentration range of 5?100 mg/L. The pH of the solutions containing either Cu2+ or Ni2+ was varied over a range of 2?8. The adsorption of Cu2+ and Ni+2 on peat was found to be pH dependent. The adsorption data could be fitted to a two-site Langmuir adsorption isotherm and the maximum adsorption capacity of peat was determined to be 17.6 mg/g for Cu2+ and 14.5 mg/g for Ni2+ at 298 K when the initial concentration for both Cu2+ and Ni2+ was 100 mg/L, and the pH of the solution was 4.0 and 4.5, respectively. Column studies were conducted to generate breakthrough data for both pure component and binary mixtures of copper and nickel. Desorption experiments showed that 2 mM EDTA solution could be used to remove all of the adsorbed copper and nickel from the bed.

    Original languageEnglish
    Pages (from-to)954-960
    Number of pages7
    JournalJournal of Environmental Management
    Volume90
    Issue number2
    DOIs
    Publication statusPublished - Feb 2009

    Fingerprint

    Peat
    Adsorption
    Binary mixtures
    Nickel
    Copper
    Lignin
    Heavy Metals
    Adsorption isotherms
    Organic compounds
    Edetic Acid
    Adsorbents
    Functional groups
    Desorption
    Ions
    Water
    Costs
    Experiments

    Keywords

    • Environmental Engineering
    • Management, Monitoring, Policy and Law
    • Waste Management and Disposal

    Cite this

    Sen Gupta, Bhaskar ; Curran, M. ; Hasan, Shameem ; Ghosh, T.K. / Adsorption characteristics of Cu and Ni on Irish peat moss. In: Journal of Environmental Management. 2009 ; Vol. 90, No. 2. pp. 954-960.
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    Adsorption characteristics of Cu and Ni on Irish peat moss. / Sen Gupta, Bhaskar; Curran, M.; Hasan, Shameem; Ghosh, T.K.

    In: Journal of Environmental Management, Vol. 90, No. 2, 02.2009, p. 954-960.

    Research output: Contribution to journalArticle

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