Study on enzyme activity inhibition mechanism of Thiobacillus denitrification intracellular enzyme to sulfate-reducing bacteria intracellular enzyme
Anti-Corrosion Methods and Materials
ISSN: 0003-5599
Article publication date: 31 March 2022
Issue publication date: 14 April 2022
Abstract
Purpose
Sulfate-reducing bacteria (SRB) are recognized by scholars as the most important class of bacteria leading to corrosion of metal materials. It is important to use the properties of microorganisms to inhibit the growth of SRB in the corrosion protection of metal materials and to protect the environment.
Design/methodology/approach
In this work, the behavior of anaerobic Thiobacillus denitrificans (TDN) intracellular enzyme inhibition of SRB corrosion of EH36 steel was investigated with electrochemical impedance spectroscopy, biological detection technology and X-ray photoelectron spectroscopy.
Findings
Results showed that the SRB crude intracellular enzyme affected the corrosion behavior of EH36 steel greatly and the purified TDN intracellular enzyme inhibits SRB intracellular enzyme corrosion to EH36 steel.
Originality/value
A perfect enzyme activity inhibition mechanism will provide theoretical guidance for the selection and application of anticorrosion microorganisms, which is of scientific significance in the field of microbial anticorrosion research.
Keywords
Acknowledgements
This study was financially supported by Chinese National Natural Science Foundation (No. 51701016), Fundamental Research Funds for the Central Universities (No. FRF-TP-19-076A1).
Conflict of interest: The authors declare that they have no conflict of interest.
Citation
Qiu, L., Tian, J., Zhang, W., Gong, A. and Zhao, W. (2022), "Study on enzyme activity inhibition mechanism of
Publisher
:Emerald Publishing Limited
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