Exploring NRB Biofilm Adhesion and Biocorrosion in Oil/Water Recovery Operations Within Pipelines.

IF 3.8 3区 医学 Q2 ENGINEERING, BIOMEDICAL Bioengineering Pub Date : 2024-10-20 DOI:10.3390/bioengineering11101046
Hadjer Didouh, Hifsa Khurshid, Mohammed Hadj Meliani, Rami K Suleiman, Saviour A Umoren, Izzeddine Sameut Bouhaik
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Abstract

Microbially influenced corrosion represents a critical challenge to the integrity and durability of carbon steel infrastructure, particularly in environments conducive to biofilm formation by nitrate-reducing bacteria (NRB). This study investigated the impact of NRB biofilms on biocorrosion processes within oil/water recovery operations in Algerian pipelines. A comprehensive suite of experimental and analytical techniques, including microbial analysis, gravimetric methods, and surface characterization, were employed to elucidate the mechanisms of microbially influenced corrosion (MIC). Weight loss measurements revealed that carbon steel samples exposed to injection water exhibited a corrosion rate of 0.0125 mm/year, significantly higher than the 0.0042 mm/year observed in crude oil environments. The microbial analysis demonstrated that injection water harbored an average of (4.4 ± 0.56) × 106 cells/cm2 for sessile cells and (3.1 ± 0.25) × 105 CFU/mL for planktonic cells, in stark contrast to crude oil, which contained only (2.4 ± 0.34) × 103 cells/cm2 for sessile cells and (4.5 ± 0.12) × 102 CFU/mL for planktonic cells, thereby highlighting the predominant role of injection water in facilitating biofilm formation. Contact angle measurements of injection water on carbon showed 45° ± 2°, compared to 85° ± 4° for crude oil, suggesting an increased hydrophilicity associated with enhanced biofilm adhesion. Scanning electron microscopy further confirmed the presence of thick biofilm clusters and corrosion pits on carbon steel exposed to injection water, while minimal biofilm and corrosion were observed in the crude oil samples.

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探索管道内油水回收作业中的 NRB 生物膜粘附和生物腐蚀。
受微生物影响的腐蚀对碳钢基础设施的完整性和耐久性提出了严峻的挑战,尤其是在有利于硝酸盐还原菌(NRB)形成生物膜的环境中。本研究调查了 NRB 生物膜对阿尔及利亚管道油/水回收作业中生物腐蚀过程的影响。研究采用了一整套实验和分析技术,包括微生物分析、重量测量方法和表面表征,以阐明微生物影响腐蚀(MIC)的机理。失重测量显示,暴露在注入水中的碳钢样品的腐蚀速率为 0.0125 毫米/年,明显高于原油环境中观察到的 0.0042 毫米/年。微生物分析表明,注入水中无柄细胞的平均含量为 (4.4 ± 0.56) × 106 cells/cm2,浮游细胞的平均含量为 (3.1 ± 0.25) × 105 CFU/mL,而原油中无柄细胞的平均含量仅为 (2.4 ± 0.34) × 103 cells/cm2,浮游细胞的平均含量为 (4.5 ± 0.12) × 102 CFU/mL,两者形成鲜明对比,从而突出了注入水在促进生物膜形成方面的主要作用。注水在碳上的接触角测量结果为 45° ± 2°,而原油的接触角测量结果为 85° ± 4°,这表明亲水性的增加与生物膜粘附性的增强有关。扫描电子显微镜进一步证实,暴露在注入水中的碳钢上存在厚厚的生物膜团和腐蚀坑,而在原油样品中观察到的生物膜和腐蚀极少。
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来源期刊
Bioengineering
Bioengineering Chemical Engineering-Bioengineering
CiteScore
4.00
自引率
8.70%
发文量
661
期刊介绍: Aims Bioengineering (ISSN 2306-5354) provides an advanced forum for the science and technology of bioengineering. It publishes original research papers, comprehensive reviews, communications and case reports. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. All aspects of bioengineering are welcomed from theoretical concepts to education and applications. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. There are, in addition, four key features of this Journal: ● We are introducing a new concept in scientific and technical publications “The Translational Case Report in Bioengineering”. It is a descriptive explanatory analysis of a transformative or translational event. Understanding that the goal of bioengineering scholarship is to advance towards a transformative or clinical solution to an identified transformative/clinical need, the translational case report is used to explore causation in order to find underlying principles that may guide other similar transformative/translational undertakings. ● Manuscripts regarding research proposals and research ideas will be particularly welcomed. ● Electronic files and software regarding the full details of the calculation and experimental procedure, if unable to be published in a normal way, can be deposited as supplementary material. ● We also accept manuscripts communicating to a broader audience with regard to research projects financed with public funds. Scope ● Bionics and biological cybernetics: implantology; bio–abio interfaces ● Bioelectronics: wearable electronics; implantable electronics; “more than Moore” electronics; bioelectronics devices ● Bioprocess and biosystems engineering and applications: bioprocess design; biocatalysis; bioseparation and bioreactors; bioinformatics; bioenergy; etc. ● Biomolecular, cellular and tissue engineering and applications: tissue engineering; chromosome engineering; embryo engineering; cellular, molecular and synthetic biology; metabolic engineering; bio-nanotechnology; micro/nano technologies; genetic engineering; transgenic technology ● Biomedical engineering and applications: biomechatronics; biomedical electronics; biomechanics; biomaterials; biomimetics; biomedical diagnostics; biomedical therapy; biomedical devices; sensors and circuits; biomedical imaging and medical information systems; implants and regenerative medicine; neurotechnology; clinical engineering; rehabilitation engineering ● Biochemical engineering and applications: metabolic pathway engineering; modeling and simulation ● Translational bioengineering
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