Staff Publications

  • external user (warningwarning)
  • Log in as
  • language uk

Current refinement(s):

  • help
  • print

    Print search results

  • export

    Export search results

  • alert
    We will mail you new results for this query: keywords==bacteriochlorophyll
Check title to add to marked list
Biological treatment of refinery spent caustics under halo-alkaline conditions
Graaff, M. de; Bijmans, M.F.M. ; Abbas, B. ; Euverink, G.J.W. ; Muyzer, G. ; Janssen, A.J.H. - \ 2011
Bioresource Technology 102 (2011)15. - ISSN 0960-8524 - p. 7257 - 7264.
sulfur-oxidizing bacteria - soda lake - sp-nov - oxidation processes - mono lake - gen. nov. - diversity - sulfide - water - bacteriochlorophyll
The present research demonstrates the biological treatment of refinery sulfidic spent caustics in a continuously fed system under halo-alkaline conditions (i.e. pH 9.5; Na(+)= 0.8M). Experiments were performed in identical gas-lift bioreactors operated under aerobic conditions (80-90% saturation) at 35°C. Sulfide loading rates up to 27 mmol L(-1)day(-1) were successfully applied at a HRT of 3.5 days. Sulfide was completely converted into sulfate by the haloalkaliphilic sulfide-oxidizing bacteria belonging to the genus Thioalkalivibrio. Influent benzene concentrations ranged from 100 to 600 µM. At steady state, benzene was removed by 93% due to high stripping efficiencies and biodegradation. Microbial community analysis revealed the presence of haloalkaliphilic heterotrophic bacteria belonging to the genera Marinobacter, Halomonas and Idiomarina which might have been involved in the observed benzene removal. The work shows the potential of halo-alkaliphilic bacteria in mitigating environmental problems caused by alkaline waste.
Check title to add to marked list

Show 20 50 100 records per page

 
Please log in to use this service. Login as Wageningen University & Research user or guest user in upper right hand corner of this page.