IDEAS home Printed from https://ideas.repec.org/a/ids/ijetma/v9y2008i1p97-104.html
   My bibliography  Save this article

Decontamination of a natural multicomponent aqueous liquid waste by titania photocatalysis

Author

Listed:
  • Amjad S. Qazaq
  • Tedi Hudaya
  • Ivy A.L. Lee
  • Andrew Sulidis
  • Adesoji A. Adesina

Abstract

The aerobic photocatalytic degradation of municipal dump-site leachate at 300 K has been carried out in a pilot-scale bubble column reactor. The leachate feed is a complex mixture of various organics and nitrogenous compounds. Runs were performed over a 48-hour period at atmospheric pressure. Compositional analysis of aliquots from the reactor revealed simultaneous total organic carbon removal and conversion of uric compounds to ammoniacal species as evidenced by time-on-stream pH increase. A Langmuir-Hinshelwood kinetic model with a unimolecular rate-determining step and a strong adsorption constant (41.6 M−1) adequately described the TOC reduction rate while NH4+ ions production rate attained a maximum around a TOC concentration of 35mM suggesting competitive adsorption between the precursors for the two parallel reactions. Reaction rates exhibited linear dependency on light intensity up to 10−4 Einstein s−1 and thereafter levelled off.

Suggested Citation

  • Amjad S. Qazaq & Tedi Hudaya & Ivy A.L. Lee & Andrew Sulidis & Adesoji A. Adesina, 2008. "Decontamination of a natural multicomponent aqueous liquid waste by titania photocatalysis," International Journal of Environmental Technology and Management, Inderscience Enterprises Ltd, vol. 9(1), pages 97-104.
    • Handle: RePEc:ids:ijetma:v:9:y:2008:i:1:p:97-104
    as

    Download full text from publisher

    File URL: http://www.inderscience.com/link.php?id=17863
    Download Restriction: Access to full text is restricted to subscribers.
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:ids:ijetma:v:9:y:2008:i:1:p:97-104. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sarah Parker (email available below). General contact details of provider: http://www.inderscience.com/browse/index.php?journalID=11 .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.