An activated sludge conditioned to a low concentration of phenol was used for the biodegradation of phenol in the presence of chlorophenols, measuring the inhibiting action of all the latter compounds and expressing it as p///5//0. As a structural property to be correlated with the measured values, the lipophilicity (log P) of the chlorophenols was reevaluated with a new apparatus. Values of p///5//0 are better correlated with the number of chloro substituents in the inhibitor, provided a specific effect of substituents ortho to the phenolic function is considered. New results are compared with previous measurements effected on a different activated sludge.
INHIBITING ACTION OF CHLOROPHENOLS ON BIODEGRADATION OF PHENOL AND ITS CORRELATION WITH STRUCTURAL-PROPERTIES OF INHIBITORS / P. BELTRAME, P.L. BELTRAME, P. CARNITI, D. GUARDIONE, C. LANZETTA. - In: BIOTECHNOLOGY AND BIOENGINEERING. - ISSN 0006-3592. - 31:8(1988), pp. 821-828.
INHIBITING ACTION OF CHLOROPHENOLS ON BIODEGRADATION OF PHENOL AND ITS CORRELATION WITH STRUCTURAL-PROPERTIES OF INHIBITORS
P. BELTRAMEPrimo
;P. CARNITI;
1988
Abstract
An activated sludge conditioned to a low concentration of phenol was used for the biodegradation of phenol in the presence of chlorophenols, measuring the inhibiting action of all the latter compounds and expressing it as p///5//0. As a structural property to be correlated with the measured values, the lipophilicity (log P) of the chlorophenols was reevaluated with a new apparatus. Values of p///5//0 are better correlated with the number of chloro substituents in the inhibitor, provided a specific effect of substituents ortho to the phenolic function is considered. New results are compared with previous measurements effected on a different activated sludge.
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