Sublethal THPS accelerates Pseudomonas-associated steel corrosion by stimulating biofilm development and microbial electron uptake

IF 7.5 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

npj Materials Degradation Pub Date : 2025-06-19 DOI:10.1038/s41529-025-00625-3

Xin Shi, Yimeng Zhang, Ruiyong Zhang, Chengpeng Li, Can Wang, Xiao‐Lei Wang, Wolfgang Sand, Jizhou Duan

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引用次数: 4

Abstract

Biocides are widely employed to mitigate microbiologically influenced corrosion (MIC) in oil and gas fields. However, improper biocide dosing may result in changes to the MIC. This study investigated the corrosion behavior of the biofilm-forming Pseudomonas stutzeri on X70 pipeline steel under sublethal concentrations of tetrakis(hydroxymethyl) phosphonium sulfate (THPS) using cell counting, weight loss measurements, surface characterization, and transcriptomic analysis. The results revealed that THPS accelerated the corrosion of X70 steel in the presence of P. stutzeri, compared to THPS-free conditions. While THPS inhibited the growth of planktonic cells, it promoted biofilm formation on the X70 steel surface. Transcriptomic data suggested that this corrosion acceleration could be attributed to metabolic alterations in P. stutzeri, potentially enhancing electron transfer between bacterial cells and the steel surface. These findings provide guidance for the rational application of biocides in industrial settings.

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亚致死THPS通过刺激生物膜发育和微生物电子吸收来加速假单胞菌相关的钢铁腐蚀

杀菌剂被广泛应用于油气田的微生物腐蚀。然而，不适当的杀菌剂剂量可能导致MIC的变化。本研究通过细胞计数、失重测量、表面表征和转录组学分析，研究了生物膜形成假单胞菌在亚致死浓度的四（羟甲基）硫酸磷（THPS）下对X70管道钢的腐蚀行为。结果表明，与不含THPS的条件相比，THPS加速了P. stutzeri对X70钢的腐蚀。THPS在抑制浮游细胞生长的同时，促进X70钢表面生物膜的形成。转录组学数据表明，这种腐蚀加速可能归因于P. stutzeri的代谢改变，潜在地增强了细菌细胞和钢表面之间的电子传递。这些发现为工业环境中杀菌剂的合理应用提供了指导。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

npj Materials Degradation MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

7.80

自引率

7.80%

发文量

审稿时长

6 weeks

期刊介绍： npj Materials Degradation considers basic and applied research that explores all aspects of the degradation of metallic and non-metallic materials. The journal broadly defines ‘materials degradation’ as a reduction in the ability of a material to perform its task in-service as a result of environmental exposure. The journal covers a broad range of topics including but not limited to: -Degradation of metals, glasses, minerals, polymers, ceramics, cements and composites in natural and engineered environments, as a result of various stimuli -Computational and experimental studies of degradation mechanisms and kinetics -Characterization of degradation by traditional and emerging techniques -New approaches and technologies for enhancing resistance to degradation -Inspection and monitoring techniques for materials in-service, such as sensing technologies