• Login
    View Item 
    •   UZ eScholar Home
    • Faculty of Science
    • Faculty of Science ETDs
    • Faculty of Science e-Theses Collection
    • View Item
    •   UZ eScholar Home
    • Faculty of Science
    • Faculty of Science ETDs
    • Faculty of Science e-Theses Collection
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    A STUDY OF THE REMOVAL OF Pb, Cd, AND Cr HEAVY METALS FROM AQUEOUS SOLUTIONS BY MORINGA OLIEFERA SEEDS IN COMPARISON TO CARBONIZED MORINGA OLIEFERA SEED.

    Thumbnail
    View/Open
    moringa thesis2.pdf (822.2Kb)
    Date
    2013-09-25
    Author
    Madzvamuse, Alfred
    Metadata
    Show full item record

    Abstract
    Moringa oleifera is an abundant and economically important plant that is used for many purposes, and is a potential resource in many ways; charcoal production is one of them. The uptake for lead, chromium, and cadmium from aqueous solution using the Moringa oleifera seeds biomass (MOS) and Moringa oleifera seed charcoal (CMOS) was studied. CMOS was prepared from MOS in order to make better use of this biomass material. Batch experiments were conducted under varying MOS/CMOS adsorbent dosages (0.5-1.5g), contact time (30min–6hr) and metal ion concentrations (1-50ppm) for chromium, lead and cadmium. The data for MOS fit well with Langmuir isotherm model for lead (maximum metal uptake (Qm) = 1.281mg/g) and Cadmium (maximum metal uptake (Qm) = 0.168mg/g) whereas CMOS can be modelled by both Freundlich and Langmuir isotherms for chromium (adsorption capacity = 0.2202 mg/g) and Lead (maximum metal uptake (Qm) = 0.552mg/g) respectively. However, the biomass of MOS was found to be more suitable than CMOS for the development of an efficient adsorbent for the removal of chromium, lead and cadmium from aqueous solutions. This study demonstrated that both the charcoal biomass could be used as adsorbents for the treatment of Cr, Pb and Cd from aqueous solution.
    URI
    http://hdl.handle.net/10646/1126
    Subject
    heavy metals
    water purification
    Moringa oleifera
    carbonised Moringa oleifera
    Collections
    • Faculty of Science e-Theses Collection [257]

    University of Zimbabwe: Educating To Change Lives!
    DSpace software copyright © 2002-2020  DuraSpace | Contact Us | Send Feedback
     

     

    Browse

    All of UZ eScholarCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    LoginRegister

    Statistics

    View Usage StatisticsView Google Analytics Statistics

    University of Zimbabwe: Educating To Change Lives!
    DSpace software copyright © 2002-2020  DuraSpace | Contact Us | Send Feedback