Assessment of Miscanthus × giganteus derived biochar as copper and zinc adsorbent: Study of the effect of pyrolysis temperature, pH and hydrogen peroxide modification

Alessio Cibati (Lead / Corresponding author), Bente Foereid, Ajay Bissessur, Simona Hapca

    Research output: Contribution to journalArticle

    21 Citations (Scopus)
    139 Downloads (Pure)

    Abstract

    In this work, experimental and modelling investigations were conducted on biochars pyrolyzed at 350 °C and 600 °C, to determine the effect of pyrolysis temperature, hydrogen peroxide activation and pH on copper and zinc removal, in comparison with commercially available activated carbons. Characterization of biochars was performed by BET surface area, elemental analysis and FTIR spectroscopy. Experiments results demonstrated that biochar pyrolyzed at 600 °C adsorbed both copper and zinc more efficiently than biochar pyrolyzed at 350 °C. Chemical activation by H2O2 increased the removal capacity of biochar pyrolyzed at 350 °C. All investigated biochars showed a stronger affinity for copper retention, with a maximum adsorption capacity of 15.7 mg/g while zinc was 10.4 mg/g. The best adsorption performances were obtained at pH 5 and 6. Langmuir adsorption isotherm described copper adsorption process satisfactorily, while zinc adsorption was better described by Freundlich isotherm.

    Original languageEnglish
    Pages (from-to)1285-1296
    Number of pages11
    JournalJournal of Cleaner Production
    Volume162
    Early online date18 Jun 2017
    DOIs
    Publication statusPublished - 20 Sep 2017

    Keywords

    • Biochar
    • Metal adsorption
    • Isotherms
    • Adsorbent
    • Copper
    • Zinc

    Fingerprint Dive into the research topics of 'Assessment of Miscanthus × giganteus derived biochar as copper and zinc adsorbent: Study of the effect of pyrolysis temperature, pH and hydrogen peroxide modification'. Together they form a unique fingerprint.

    Cite this