Vaccine production effluents are frequently polluted with thiomersal, a highly toxic organomercurial compound, for which there is presently no remediation technology available. This work proposes a biotechnological process, for the remediation of vaccine production wastewaters, based on the biological degradation of thiomersal to metallic mercury, under aerobic conditions, by a mercury resistant bacterial strain. The kinetics of thiomersal degradation by a pure culture of Pseudomonas putida spi3 strain, in batch culture and using a synthetic wastewater, is presented and discussed. Additionally, a continuous stirred tank reactor (CSTR) fed with the synthetic wastewater was operated, and the bioreactor performance and robustness, when exposed to thiomersal shock loads, was evaluated. Finally, a CSTR for the biological treatment of a real vaccine production effluent was set-up and operated at different dilution rates.
|Title of host publication||EUROPEAN SYMPOSIUM ON ENVIRONMENTAL BIOTECHNOLOGY, ESEB 2004|
|Publication status||Published - 2004|
|Event||European Symposium on Environmental Biotechnology - Oostende, Belgium|
Duration: 25 Apr 2004 → 28 Apr 2004
|Conference||European Symposium on Environmental Biotechnology|
|Period||25/04/04 → 28/04/04|