Improving the adsorption efficiency of phenolic compounds into olive wood biosorbents by pre-washing with organic solvents: Equilibrium, kinetic and thermodynamic aspects

A.H. El-Sheikh, Alan Newman, A.J. Said, A.M. Alzawahreha, M.M. Abu-Helala

    Research output: Contribution to journalArticle

    25 Citations (Scopus)

    Abstract

    The adsorption properties of olive wood (OW) toward phenol, 2-chlorophenol, 3-chlorophenol, 4-chlorophenol, 2-nitrophenol, 4-nitrophenol and 2,4-dinitrophenol, were improved by washing OW with some organic solvents (ethanol, tetrahydrofuran, ether, dichloromethane or hexane). Adsorption isotherms were classified according to Giles and Smith classification, in which L2-shape was obtained after OW washing. The adsorption data were modeled using Langmuir and Freundlich isotherm equations and it was found that adsorption capacity and affinity have increased after OW washing. Thermodynamic (?. G°, ?. H° and ?. S°), kinetic and intra-particle diffusion parameters were estimated before and after OW washing. It was found that the adsorption of phenols on OW was of physical nature, spontaneous, exothermic and followed second order rate equation. After OW washing, adsorption spontaneity has increased. Both pore diffusion and kinetic resistances have most likely affected the adsorption process. The results presented in this work suggested that washing OW with any one of the tested solvents would enhance uptake of the tested phenols into OW sorbent. Discussing some economical and environmental aspects suggested that the use of ethanol might be preferred.
    Original languageEnglish
    Pages (from-to)1-10
    JournalJournal of Environmental Management
    Volume118
    DOIs
    Publication statusPublished - 2013

    Fingerprint

    phenolic compound
    Washing
    Organic solvents
    Wood
    thermodynamics
    Thermodynamics
    adsorption
    Adsorption
    kinetics
    Kinetics
    chlorophenol
    Phenols
    phenol
    ethanol
    isotherm
    Ethanol
    organic solvent
    Dichloromethane
    Sorbents
    Hexane

    Bibliographical note

    The full text of this item is not available from the repository.

    Keywords

    • adsorption kinetics
    • adsorption models
    • adsorption thermodynamics
    • agricultural waste
    • biosorption
    • olive wood
    • phenols

    Cite this

    Improving the adsorption efficiency of phenolic compounds into olive wood biosorbents by pre-washing with organic solvents: Equilibrium, kinetic and thermodynamic aspects. / El-Sheikh, A.H.; Newman, Alan; Said, A.J.; Alzawahreha, A.M.; Abu-Helala, M.M.

    In: Journal of Environmental Management, Vol. 118, 2013, p. 1-10.

    Research output: Contribution to journalArticle

    @article{ab772441ef954bcb8bd7a0e8f4142f70,
    title = "Improving the adsorption efficiency of phenolic compounds into olive wood biosorbents by pre-washing with organic solvents: Equilibrium, kinetic and thermodynamic aspects",
    abstract = "The adsorption properties of olive wood (OW) toward phenol, 2-chlorophenol, 3-chlorophenol, 4-chlorophenol, 2-nitrophenol, 4-nitrophenol and 2,4-dinitrophenol, were improved by washing OW with some organic solvents (ethanol, tetrahydrofuran, ether, dichloromethane or hexane). Adsorption isotherms were classified according to Giles and Smith classification, in which L2-shape was obtained after OW washing. The adsorption data were modeled using Langmuir and Freundlich isotherm equations and it was found that adsorption capacity and affinity have increased after OW washing. Thermodynamic (?. G°, ?. H° and ?. S°), kinetic and intra-particle diffusion parameters were estimated before and after OW washing. It was found that the adsorption of phenols on OW was of physical nature, spontaneous, exothermic and followed second order rate equation. After OW washing, adsorption spontaneity has increased. Both pore diffusion and kinetic resistances have most likely affected the adsorption process. The results presented in this work suggested that washing OW with any one of the tested solvents would enhance uptake of the tested phenols into OW sorbent. Discussing some economical and environmental aspects suggested that the use of ethanol might be preferred.",
    keywords = "adsorption kinetics, adsorption models, adsorption thermodynamics, agricultural waste, biosorption, olive wood, phenols",
    author = "A.H. El-Sheikh and Alan Newman and A.J. Said and A.M. Alzawahreha and M.M. Abu-Helala",
    note = "The full text of this item is not available from the repository.",
    year = "2013",
    doi = "10.1016/j.jenvman.2013.01.009",
    language = "English",
    volume = "118",
    pages = "1--10",
    journal = "Journal of Environmental Management",
    issn = "0301-4797",
    publisher = "Elsevier",

    }

    TY - JOUR

    T1 - Improving the adsorption efficiency of phenolic compounds into olive wood biosorbents by pre-washing with organic solvents: Equilibrium, kinetic and thermodynamic aspects

    AU - El-Sheikh, A.H.

    AU - Newman, Alan

    AU - Said, A.J.

    AU - Alzawahreha, A.M.

    AU - Abu-Helala, M.M.

    N1 - The full text of this item is not available from the repository.

    PY - 2013

    Y1 - 2013

    N2 - The adsorption properties of olive wood (OW) toward phenol, 2-chlorophenol, 3-chlorophenol, 4-chlorophenol, 2-nitrophenol, 4-nitrophenol and 2,4-dinitrophenol, were improved by washing OW with some organic solvents (ethanol, tetrahydrofuran, ether, dichloromethane or hexane). Adsorption isotherms were classified according to Giles and Smith classification, in which L2-shape was obtained after OW washing. The adsorption data were modeled using Langmuir and Freundlich isotherm equations and it was found that adsorption capacity and affinity have increased after OW washing. Thermodynamic (?. G°, ?. H° and ?. S°), kinetic and intra-particle diffusion parameters were estimated before and after OW washing. It was found that the adsorption of phenols on OW was of physical nature, spontaneous, exothermic and followed second order rate equation. After OW washing, adsorption spontaneity has increased. Both pore diffusion and kinetic resistances have most likely affected the adsorption process. The results presented in this work suggested that washing OW with any one of the tested solvents would enhance uptake of the tested phenols into OW sorbent. Discussing some economical and environmental aspects suggested that the use of ethanol might be preferred.

    AB - The adsorption properties of olive wood (OW) toward phenol, 2-chlorophenol, 3-chlorophenol, 4-chlorophenol, 2-nitrophenol, 4-nitrophenol and 2,4-dinitrophenol, were improved by washing OW with some organic solvents (ethanol, tetrahydrofuran, ether, dichloromethane or hexane). Adsorption isotherms were classified according to Giles and Smith classification, in which L2-shape was obtained after OW washing. The adsorption data were modeled using Langmuir and Freundlich isotherm equations and it was found that adsorption capacity and affinity have increased after OW washing. Thermodynamic (?. G°, ?. H° and ?. S°), kinetic and intra-particle diffusion parameters were estimated before and after OW washing. It was found that the adsorption of phenols on OW was of physical nature, spontaneous, exothermic and followed second order rate equation. After OW washing, adsorption spontaneity has increased. Both pore diffusion and kinetic resistances have most likely affected the adsorption process. The results presented in this work suggested that washing OW with any one of the tested solvents would enhance uptake of the tested phenols into OW sorbent. Discussing some economical and environmental aspects suggested that the use of ethanol might be preferred.

    KW - adsorption kinetics

    KW - adsorption models

    KW - adsorption thermodynamics

    KW - agricultural waste

    KW - biosorption

    KW - olive wood

    KW - phenols

    U2 - 10.1016/j.jenvman.2013.01.009

    DO - 10.1016/j.jenvman.2013.01.009

    M3 - Article

    VL - 118

    SP - 1

    EP - 10

    JO - Journal of Environmental Management

    JF - Journal of Environmental Management

    SN - 0301-4797

    ER -