Skip to main content

Bioprecipitation of Strontium by Sulphate Reducing Bacteria

Buy Article:

$17.50 plus tax (Refund Policy)

Or sign up for a free trial


This study investigates the sorption of Sr2+ from aqueous solution by a growing sulphate reducing bacteria consortium. The kinetics of strontium sorption by sulphate reducing bacteria at different initial strontium concentrations (25, 50 and 75 mg L-1), different sulphate reducing bacteria biomass types (dead, growing and resting) as well as different sorbent doses (0.5, 1.0, 2.0, and 3g L-1) were fitted into the Lagergren pseudo-first and second order, and the intraparticle diffusion model. The distribution of the bioprecipitated solid phase strontium species was determined by the application of a five-step sequential extraction procedure. Results obtained showed that strontium sorption by sulphate reducing bacteria follows a second-order process, where chemisorption is the main rate-controlling step. Strontium sorption increased with increasing initial concentration, further suggesting that removal occurred through passive processes, such as biosorption and chemical precipitation. Results obtained from the sequential leaching procedure indicated that about 68% of the removed strontium was adsorbed on the surface of the bacteria by relatively weak electrostatic interaction, while about 22% was bound to carbonates, 4% bound to oxides, 3% bound to sulphides and remainder occurring as an immobile fraction, further supporting model predictions of chemisorption as the main mechanism of strontium uptake.

Document Type: Research Article


Publication date: January 1, 2008

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 These proceedings are not peer reviewed.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access.
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • ingentaconnect is not responsible for the content or availability of external websites

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
ingentaconnect 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