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利用交流阻抗(EIS)、原子力显微镜(AFM)和X射线光电子能谱(XPS)等方法研究了在高矿化度盐水介质中含咪唑杂环的双季铵盐化合物MDHTD对硫酸盐还原菌(SRB)生物膜的剥离和在Q235钢表面的吸附作用.结果表明:在高矿化度盐水中,MDHTD在碳钢表面的吸附抑制了SRB在金属基体表面的生长代谢过程,对SRB生物膜具有良好的渗透和剥离作用,使生物膜电阻显著降低;由于MDHTD在金属基体表面的吸附,双电层电容值和腐蚀反应的电荷传递电阻都有升高的趋势.
The effects of MDHTD, an imidazole heterocycle-containing bisquaternary ammonium salt compound, on sulfate-reducing bacteria (Sulfate-reducing bacteria) in high salinity brine media were investigated by means of electrochemical impedance spectroscopy (EIS), atomic force microscopy (AFM) and X-ray photoelectron spectroscopy SRB) biofilm and its adsorption on the surface of Q235 steel.The results show that the adsorption of MDHTD on the surface of carbon steel inhibits the growth and metabolism of SRB on the surface of metal matrix in high salinity brine, Good permeability and stripping, the biofilm resistance decreased significantly; due to the adsorption of MDHTD on the surface of the metal substrate, the electric double layer capacitance value and the corrosion resistance of the charge transfer resistance tends to increase.