Mechanism and model of inhibition of TGB bacteria by MBQA in media media

biquaternary ammonium salts;  electron probes;  mechanism;  Model

In order to further investigate the inhibitory effect of biquaternary ammonium salts (MBQA) on saprophytes (TGB), the inhibition mechanism and model of biquaternary ammonium salts MBQA on saprophytes in culture media were studied by atomic force microscopy, electron probe and scanning electron microscope. The results show that MBQA can preferentially adsorb on the surface of carbon steel metal in the culture medium to form a complete and dense organic adsorption film, which makes it difficult for the products produced by bacterial metabolism to reach the surface of the metal matrix. At the same time, MBQA makes the deposition of biofilms loose, and the corrosion of submembrane sulfate-reducing bacteria is also effectively inhibited.