The continuous aerobic degradation of phenoxyalkanoate herbicides by Sphingomonas herbicidov o r m MH was investigated in a bubble reactor filled with modified polyurethane-foam (PU 90/51) as a camer for the adsorptive immobilization of the bacterial cells. The PU-foam was applied in the form of plates (5 x 10 x 10 mm) and the amount added was equivalent to a PU-load of 1.25% [w/vJ. Strain MH is capable of detoxifying the dichloro-substituted phenoxyalkanoates 2,4-DP, 2,4-D and 2,4-DB and the methylchloro-sub…
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