H2020Индивидуална стипендия2016–2018

MOLMIC · Molecular Biology of Sulfide-Oxidizing Nitrate-Reducing Microorganisms Involved in Microbiologically-Influenced Corrosion

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2016-01-06 → 2018-01-05
Финансиране от ЕС: 183 455 €
Участници: 1
Схема: MSCA-IF-EF-ST

Линиите свързват координатора с партньорите.

Накратко на български

Молекулярната биология на микроорганизмите, които окисляват сулфиди и редуцират нитрати, се анализира, за да се разбере как те причиняват корозия на стоманени тръбопроводи. Това помага за намаляване на разходите от повреди в нефтената индустрия и ограничаване на рисковете за околната среда.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Molecular Biology of Sulfide-Oxidizing Nitrate-Reducing Microorganisms Involved in Microbiologically-Influenced Corrosion

Modern society is striving to orient our energy use towards sustainable ‘green’ energy sources, however, this transition is occurring slowly. Due to the increasing energy demand, fossil fuels will remain crucial for several years during the transition phase towards ‘greener’ solutions. The inevitable depletion of fossil fuel reserves and the devastating effects of oil spills to ecosystem services requires a responsible and sustainable development of the remaining resources during this transition period. Corrosion of steel infrastructure is a multi-billion Euro problem for the oil and gas industry, which can lead to significant costs due to equipment failure as well as risk to the environment. Microorganism can significantly influence corrosion reactions on steel surfaces and this phenomenon is referred to as microbiologically-influenced corrosion (MIC). MIC in the oil industry is often linked to activity of sulfate-reducing microorganisms (SRM), which produce toxic, explosive and corrosive hydrogen sulfide, thus contributing to oil reservoir souring. The formation of sulfide poses a significant threat for worker’s health and safety and decreases product values due to higher sulfur content. Nitrate injection into sour oil fields biologically removes hydrogen sulfide by promoting activity of sulfide-oxidizing nitrate-reducing microorganisms (soNRM). However, recent reports involved soNRM in MIC, threatening application of nitrate as a souring control strategy. The MOLMIC project addressed the Molecular Biology of Sulfide-Oxidizing Nitrate-Reducing Microorganisms Involved in Microbiologically-Influenced Corrosion. The project developed i) a sound understanding of the sulfur metabolism of oil field soNRM, ii) linked different soNRM metabolisms to corrosion and iii) evaluated nitrate-mediated MIC in complex microbial communities. MOLMIC developed an unprecedented understanding of the factors and mechanisms by which soNRMs contribute to corrosion during the injection of nitrate. This information increased our understanding of this bioengineering strategy and is invaluable for the development of targeted gene assays to monitor soNRM activity where nitrate-mediated corrosion might be an issue.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

Dr. Sven Lahme proposes to work with Prof. Ian Head at Newcastle University, UK, to study the Molecular Biology of Sulfide-Oxidizing Nitrate-Reducing Microorganisms Involved in Microbiologically-Influenced Corrosion (MOLMIC). Corrosion is a multi-billion Euro problem for the oil and gas industry. Microbiologically-influenced corrosion (MIC) in this sector is usually linked to souring of oil fields due to production of toxic and corrosive H2S by sulfate-reducing bacteria (SRB). Injection of nitrate into sour oil fields is a bioengineering strategy, which removes H2S by promoting sulfide-oxidizing nitrate-reducing bacteria (soNRB). However, recent reports involved soNRB in MIC due to incomplete oxidation of H2S to corrosive sulfur intermediates. The end products of soNRB metabolism vary depending on the ratio of sulfide to nitrate. This suggests that a predictive understanding of soNRB metabolism and appropriately adjusting the nitrate dosage can prevent the risk for soNRB-mediated MIC. MOLMIC will investigate the ecophysiological role of soNRB in oil field corrosion by using isolated cultures, specific enrichments and complex communities. It aims to i) understand the sulfur metabolism of oil field soNRB by gathering genomic and transcriptomic information through next-generation sequencing, ii) link different soNRB metabolisms to corrosion by monitoring corrosion rates and gene expression under various conditions and iii) evaluate soNRB MIC and countermeasures in complex communities by testing different nitrate dosing strategies and predictive genetic diagnostics. Dr. Lahme will expand his skills in microbial physiology and molecular biology acquired in Germany and will be introduced to petroleum microbiology, bioengineering and electrochemical techniques. New academic and industrial collaborations will emerge, which are both essential for becoming an independent and leading researcher.

Оригинален текст от CORDIS (на английски).

Участници

UNIVERSITY OF NEWCASTLE UPON TYNE · Newcastle Upon TyneКоординаторОбединеното кралство