Influence of the initial composition of algal-bacterial microcosms on the degradation of salicylate in a fed-batch culture

Benoit Guieysse, X Borde, Raul Munoz, Rajni Hatti-Kaul, C Nugier-Chauvin, H Patin, Bo Mattiasson

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The influence of the initial composition of an algal-bacterial microcosm constituted of Chlorella sorokiniana and Ralstonia basilensis was tested for the fed-batch degradation of salicylate at 5 mM. Salicylate degradation was always limited by the O-2 generation rate, which was initially proportional to the algal density, but rapidly became limited by the availability of light once the algae started to grow. The decrease of the salicylate removal rate observed at high algal densities was likely caused by mutual shading within the algal population and the increase of O-2 consumption due to algal dark respiration. With repeated salicylate amendments, all systems converged towards the same characteristics, reaching an optimum rate of salicylate degradation at 1 mmol l(-1) day.
    Original languageEnglish
    Pages (from-to)531-538
    JournalBiotechnology Letters
    Volume24
    Issue number7
    DOIs
    Publication statusPublished - 2002

    Subject classification (UKÄ)

    • Industrial Biotechnology

    Free keywords

    • Ralstonia basilensis
    • inoculation
    • Chlorella sorokiniana
    • biodegradation
    • algal-bacterial microcosms
    • aromatic pollutants

    Fingerprint

    Dive into the research topics of 'Influence of the initial composition of algal-bacterial microcosms on the degradation of salicylate in a fed-batch culture'. Together they form a unique fingerprint.

    Cite this