Skip to main content

Photoassisted Biodegradation of Halogenated Breakdown Products from Nuclear Fuel Recovery Process -Hybrid Process

Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

In this study, the extent of dehalogenation of toxic aromatic compounds was evaluated using a photolytic advanced oxidation process (AOP) followed by biodegradation in the second stage. A hard-to-degrade toxic pollutant, 4-chlorophenol (4-CP) was used as a model compound to represent a variety of organic compounds in the nuclear fuel recovery process water. Experimental runs were performed by varying the initial 4-CP concentration from 50–1000 mg L-1, and adding H2O2 at various concentrations in order to determine the influence and optimal operation of the biological stage. A UV assisted AOP demonstrated great potential in treatment of nuclear process wastewater by high removal efficiency (> 98%) under various 4-CP concentrations. Adding hydrogen peroxide (H2O2) as a liquid catalyst further improved biodegradation rate but the effect was limited by the scavenging of OH· radicals under high concentrations of H2O2. Chemical reactor reaction rate coefficients were calculated from experimental data as k = 0.471, 0.558 h−1 on 4-CP influent of 50 and 100 mg L−1, respectively. The value of the half velocity coefficient for substrate removal in the bioreactor (Ks = 5.735 × 10− 8 mg L−1) was very high, such that, the reaction rate approached first order with the substrate utilization rate constant μmax = 2.039 h−1.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Keywords: Biodegradation; UV assisted AOP; hybrid system; nuclear process water

Document Type: Research Article

Publication date: 01 January 2009

More about this publication?
  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

    A subscription to the Proceedings of the Water Environment Federation includes access to most papers presented at the annual WEF Technical Exhibition and Conference (WEFTEC) and other conferences held since 2000. Subscription access begins 12 months after the event and is valid for 12 months from month of purchase. A subscription to the Proceedings of the Water Environment Federation is included in Water Environment Federation (WEF) membership.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access. Access begins 12 months after the conference or event
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • Learn about the many other WEF member benefits and join today
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more