Skip to main content

A Hydrogen-Based Hollow-fiber Membrane Biofilm Reactor Used for Cr(VI) Removal from Groundwater

Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

Hexavalent chromium (Cr(VI)) is a mutagen and carcinogen that is a significant concern in water and wastewater. A simple and non-hazardous means to remove Cr(VI) is bio-reduction to Cr(III), which should precipitate as Cr(OH)3 (s). A Hydrogen-based Membrane Biofilm Reactor (MBfR) was used for bio-reduction of Cr(VI) in groundwater. The acclimatization was achieved by culturing the biofilm, altering the Cr(VI) concentrations in influent and the supplied hydrogen pressure. After 120 days, the Cr(VI) removal rate was 83% with average reduction rate of 4.27 g/m3/d while the influent Cr(VI) concentration of 1000 μg/L. The Cr(III) concentrations increased constantly, and reached to 845 μg/L on day 60 and 800 μg/L on day 120 with different influent concentrations. Denitrification was achieved completely with NO3 --N removal rate was 99%, and sulfate reduction was also achieved nearly 35%. Increasing the H2 pressure and decreasing the influent Cr(VI) loading increased the Cr(VI) removal percentage. The total demand for H2 was largely controlled by nitrate reduction, not Cr(□) reduction. These experiments confirm that a denitrifying, H2-based MBfR can be used to reduce Cr(VI) to Cr(III) and remove Cr from groundwater.
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: Chromate; bio-reduction; groundwater; membrane biofilm reactor

Document Type: Research Article

Publication date: 2010-01-01

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 These proceedings are not peer reviewed.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
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