Effect of specific inhibitors on the dechlorination of trichlorobenzenes in Ti(III)-reduced medium containing 10 mM pyruvate. Symbols: ○, control; □, 4 mM BES; ▪, 4 mM BES plus 15% (vol/vol) hydrogen; ▿, 2 mM molybdate; ▵, negative control, not inoculated. Data are means of triplicate cultures; standard deviations were below 10%.