Effect of the concentration of nitrogen compounds on microbial reduction of sulphates.

Abstract

A change of the N/S ratio in the reaction medium affects the degree of the microbial reduction of sulphates to sulphides (x'). The time interval between the initial and the log phase of the process (t0) also varies, depending on the N/S ratio. It was demonstrated that optimal reduction conditions by the studied strain of Desulfovibrio desulphuricans exist in media of N/S=0.33.