{"id":1026,"date":"2024-10-30T13:36:47","date_gmt":"2024-10-30T12:36:47","guid":{"rendered":"https:\/\/micropro.de\/forschung\/abgeschlossene-forschung\/"},"modified":"2026-02-17T14:38:35","modified_gmt":"2026-02-17T13:38:35","slug":"past-projects","status":"publish","type":"page","link":"https:\/\/micropro.de\/en\/forschung\/past-projects\/","title":{"rendered":"Past projects"},"content":{"rendered":"\n
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UMAS \u2013Underground methanation in aquifer storage<\/h2>\n\n\n\n

The UMAS research project (01.05.2020 \u2014 30.09.2022) inves\u00adti\u00adgated the technical, economic and socio-economic feasi\u00adbility as well as the ecolo\u00adgical potential of under\u00adground metha\u00adnation in the Berlin natural gas storage facility, which has been decom\u00admis\u00adsioned since 2017. The concept envisaged using electricity from renewable energies (wind or solar energy) to produce hydrogen by means of electro\u00adlysis. This hydrogen was to be fed into the porous sandstone layer of the storage facility together with carbon dioxide and converted into methane by microorganisms.<\/p>\n\n\n\n

Experts from the project partners: Berliner Erdgas\u00adspeicher GmbH, DBI \u2014 Gas und Umwelt\u00adtechnik GmbH, I\u00d6W \u2014 Institut f\u00fcr \u00f6kolo\u00adgische Wirtschafts\u00adfor\u00adschung GmbH, MicroPro GmbH, Reiner Lemoine Institut gGmbH and Clausthal University of Technology worked closely together to research the potential of the Berlin natural gas storage facility for the energy transition. MicroPro GmbH was respon\u00adsible for the micro\u00adbio\u00adlo\u00adgical inves\u00adti\u00adgation of the Berlin natural gas storage facility.<\/p>\n\n\n\n

The first step was to inves\u00adtigate which organisms are already present in the under\u00adground storage facility and whether they can be used to convert CO2<\/sub> and hydrogen into methane under the storage condi\u00adtions. In addition, inves\u00adti\u00adga\u00adtions were planned into the effec\u00adti\u00adveness and harmful potential of the organisms.<\/p>\n\n\n\n

The micro\u00adbio\u00adlo\u00adgical inves\u00adti\u00adga\u00adtions showed that microbial metha\u00adnation with hydrogen-utilizing archaea is feasible in principle under suitable condi\u00adtions, but that the necessary living condi\u00adtions were not present in the Berlin aquifer reservoir. The metha\u00adno\u00adgenic archaea required for the biolo\u00adgical metha\u00adnation of hydrogen were not detec\u00adtable in the formation water of the reservoir. Active enrichment cultures of metha\u00adno\u00adgenic cultures from other sites could not survive under the highly saline condi\u00adtions of the Berlin reservoir (22 \u2014 25 %). It was proven that the high salinity is respon\u00adsible for the inactivity of the metha\u00adnogens and thus the essential prere\u00adqui\u00adsites for the estab\u00adlishment of a biolo\u00adgical metha\u00adnation process in the Berlin reservoir are missing. For this far-reaching finding, several fresh deep water samples from the Berlin reservoir were examined micro\u00adbio\u00adlo\u00adgi\u00adcally and molecular biolo\u00adgi\u00adcally and the minimum requi\u00adre\u00adments for the storage condi\u00adtions were deter\u00admined in model tests.<\/p>\n\n\n\n

The conclusion of the micro\u00adbio\u00adlo\u00adgical inves\u00adti\u00adga\u00adtions was that the intended estab\u00adlishment of the bio-methanation of hydrogen and carbon dioxide in the Berlin storage facility is associated with major technical challenges (dilution of the brine with fresh water and inocu\u00adlation with foreign micro\u00ador\u00adga\u00adnisms) and certain risks (H2<\/sub>S formation) from a micro\u00adbio\u00adlo\u00adgical perspective. For this reason, the overall project was stopped from an economic point of view and inves\u00adti\u00adga\u00adtions into this topic at the Berlin reservoir were terminated.<\/p>\n\n\n\n

The two-and-a-half-year UMAS project (project poster<\/a>) was funded by the Federal Ministry for Economic Affairs and Climate Protection as part of the energy research program.<\/p>\n\n\n\n

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H2-UGS \u2014 Microbiology of underground hydrogen storage<\/h2>\n\n\n\n

Micro\u00ador\u00adga\u00adnisms can cause serious damage to goods and technical equipment stored in under\u00adground storage facilities. Despite the relevance of the imminent use of under\u00adground storage facilities for hydrogen, no syste\u00admatic studies have yet been conducted on the microbial processes in these storage facilities. This stands in stark contrast to the develo\u00adpment potential of micro\u00ador\u00adga\u00adnisms in under\u00adground hydrogen storage facilities.<\/p>\n\n\n\n

A research project is currently being carried out to inves\u00adtigate the risks, the potential for damage to technical instal\u00adla\u00adtions, and micro\u00adbio\u00adlo\u00adgical processes involved in the under\u00adground storage of hydrogen. The aim is to charac\u00adterize the potential metabolic processes and the micro\u00ador\u00adga\u00adnisms involved. In practical laboratory experi\u00adments, micro\u00adbio\u00adlo\u00adgical scenarios are being modeled in order to analyze the key parameters influencing the potential processes and to provide criteria for storage selection and risk assessment. The planned inves\u00adti\u00adga\u00adtions build on extensive experience with micro\u00adbially caused damage in under\u00adground gas storage and the use of geothermal energy, and serve as a preli\u00adminary stage for object-specific appli\u00adcation studies.<\/p>\n\n\n\n

The literature study highlights the potential effects and risks of micro\u00adbio\u00adlo\u00adgical processes in under\u00adground storage facilities, with a view to the propor\u00adtional feed-in of hydrogen and biome\u00adthane into the natural gas grid. It presents the diverse microbial metabolic pathways and discusses practical ecolo\u00adgical parameters of storage micro\u00adbiology, inter\u00adac\u00adtions with rock matrix and formation waters, conta\u00admi\u00adnation risks and possible effects on technical storage operations.<\/p>\n\n\n\n

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Influence of biogas and hydrogen on microbiology in underground storage facilities<\/h3>
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The micro\u00adbio\u00adlo\u00adgical risks associated with the propor\u00adtional injection of hydrogen and biome\u00adthane into the natural gas grid can be estimated to a certain extent on the basis of data that has already been published. Since hydrogen is an energy source for numerous anaerobic metabolic processes, there is a considerable risk potential for under\u00adground storage facilities, especially pore storage facilities. Many German storage facilities offer the necessary condi\u00adtions for rapid and complete microbial degra\u00addation of hydrogen intro\u00adduced into the system, which is why it is not possible to specify a safe lower concen\u00adtration limit for hydrogen.<\/p>\n\n\n\n

The rapid utili\u00adsation of hydrogen by sulphate-reducing and metha\u00adno\u00adgenic proka\u00adryotes can have signi\u00adficant technical and economic conse\u00adquences, such as sulphide formation (H2<\/sub>S), micro\u00adbially induced corrosion (MIC) or reduced permea\u00adbility in the storage rock. At present, we can only speculate about the possible extent of negative effects and whether certain storage sites with lower risk exist.<\/p>\n\n\n\n

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Process development for safety monitoring and treatment of microbiological processes in underground storage of renewable hydrogen<\/h3>
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Supported by the state of Saxony-Anhalt, a three-year research programme analysed the assessment criteria for the safe under\u00adground storage of renewable hydrogen and developed a method for monitoring the safety of under\u00adground storage facilities. This catalogue of methods covers all the analyses necessary for a practical micro\u00adbio\u00adlo\u00adgical storage assessment. It also outlines ways of dealing with micro\u00adbially induced disturbances.<\/p>\n\n\n\n

To evaluate the analysis methods, a culture collection of micro\u00ador\u00adga\u00adnisms from German under\u00adground storage facilities was created, which grow under different condi\u00adtions. Using these cultures, the influence of micro\u00ador\u00adga\u00adnisms on hydrogen storage under the different ecolo\u00adgical condi\u00adtions of cavern and pore storage facilities was simulated and the necessary accom\u00adpanying analyses were defined. The results of these model tests made it possible to determine the key risk parameters for hydrogen storage in under\u00adground storage facilities.<\/p>\n\n\n\n

Possible strategies for preventing and combating microbial popula\u00adtions in storage facilities were tested and evaluated under practical condi\u00adtions in high-pressure tests. The storage monitoring process<\/a> was incor\u00adpo\u00adrated into MicroPro GmbH\u2019s service portfolio.<\/p>\n<\/div><\/div>\n\n\n\n

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Hydrogen Power Storage & Solutions East Germany, or \u2018HYPOS<\/a>\u2019 for short, is one of ten East German projects funded by the Federal Ministry of Education and Research (BMBF) as part of the \u2018Zwanzig20 \u2013 Partnership for Innovation\u2019 programme. The central theme for HYPOS is the use and temporary storage of surplus electricity from renewable sources for H2<\/sub> electrolysis.<\/p>\n\n\n\n

The potential effects of hydrogen-stimulated micro\u00ador\u00adganism growth in caverns are to be inves\u00adti\u00adgated at a model site. In addition to compre\u00adhensive micro\u00adbio\u00adlo\u00adgical and molecular biolo\u00adgical analyses, simulation experi\u00adments are also planned. The joint project is designed for the medium term.<\/p>\n\n\n\n

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Further projects<\/h2>\n\n\n\n

Ensilage<\/strong><\/h3>
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As part of a research colla\u00adbo\u00adration, silages were produced from different plant parts that were considered parti\u00adcu\u00adlarly suitable for the production of biogas due to their increased acetate and reduced lactate content.<\/p>\n\n\n\n

The increased acetate production was induced by inocu\u00adlating the plant material with bacterial strains from different physio\u00adlo\u00adgical groups. In parti\u00adcular, the addition of heter\u00ado\u00adfer\u00admen\u00adtative lactic acid bacteria triggered a signi\u00adficant increase in acetate formation in the ensiled material. The special test silages produced in this way were then fed into biogas production by the research partners. The biogas production was examined quali\u00adta\u00adtively and quanti\u00adta\u00adtively in order to determine differences.<\/p>\n\n\n\n

The compe\u00adti\u00adti\u00adveness of the test strains used for ensiling varies greatly and represents a signi\u00adficant challenge for the process. It was confirmed that the fermen\u00adtation acid patterns and the specific methane yields of the plant samples could be signi\u00adfi\u00adcantly influenced by the addition of biolo\u00adgical ensiling agents. The principle of fermen\u00adtation product control was clearly confirmed in this project phase. Further work will focus on the selection and compo\u00adsition of a suitable micro\u00ador\u00adganism consortium for biogas-oriented ensiling.<\/p>\n<\/div><\/div>\n\n\n\n

Oil positive bacteria \u2013 Special application for water decontamination<\/strong><\/h3>
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In many years of research, MicroPro GmbH has succeeded in isolating special hydrocarbon-degrading bacteria (including Gordonia) from natural sites, which do not develop in the aqueous phase \u2014 as is usually the case \u2014 but directly in the oil phase. In a water-oil emulsion, these bacteria penetrate oil droplets and develop into masses. The oil is strongly emulsified and rapidly degraded by the formation of surface-active substances. Special areas of appli\u00adcation are aquatic systems (e.g. lakes, rivers, seas) and shore zones with corre\u00adsponding oil conta\u00admi\u00adnation. When these special bacterial cultures are intro\u00adduced into a water-oil mixture, the bacteria pass directly into the oil phase (conta\u00admi\u00adnation) and are therefore not diluted by the water.<\/p>\n<\/div><\/div>\n\n\n\n

Bacterial hemp fiber digestion<\/strong><\/strong><\/h3>
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Hemp is a natural product that is degraded under favorable condi\u00adtions by a broad spectrum of micro\u00ador\u00adga\u00adnisms. There is no infor\u00admation in the literature on the stabi\u00adlization of hemp products by biocides or on the use of hemp waste and recycling material for the production of bioenergy sources in the form of hydrogen and methane.<\/p>\n\n\n\n

By applying methods for the deter\u00admi\u00adnation of bacte\u00adrio\u00adstatic and biocidal efficacy, 3 biocides could be selected from more than 20 pre-selected products due to their high efficacy against complex germ mixtures. In long-term storage tests with repeated inocu\u00adla\u00adtions, stabi\u00adlization was achieved both for hemp fibre materials and for surfac\u00adtants made from hemp oil.<\/p>\n\n\n\n

The microbial degra\u00addation of hemp fibers was inves\u00adti\u00adgated in detail. Previously undescribed struc\u00adtures of the union of elementary fibers into fiber bundles were detected. Special bacterial cultures for the degra\u00addation of pectin, anaerobic fermen\u00adtation, cellulose decom\u00adposers and methane formers were isolated. The basis for the conception of a new, biotech\u00adno\u00adlo\u00adgical process of fiber disin\u00adte\u00adgration was created, which will be trans\u00adferred to the BMBF project 03|1522.<\/p>\n\n\n\n

The biogas production (methane) from waste materials and hemp fibers was deter\u00admined on a laboratory scale with yields of 300 to 450 m3<\/sup>\/t. A novel two-stage process of alcoholic fermen\u00adtation with subse\u00adquent biogas production was developed for hemp. This made it possible to produce 80 m\u00b3 of hydrogen and 130 m3<\/sup> of methane per ton of hemp dust. <\/p>\n<\/div><\/div>\n\n\n\n

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UMAS \u2013Under\u00adground metha\u00adnation in aquifer storage The UMAS research project (01.05.2020 \u2014 30.09.2022) inves\u00adti\u00adgated the technical, economic and socio-economic feasi\u00adbility as well as the ecolo\u00adgical potential of under\u00adground metha\u00adnation in the Berlin natural gas storage facility, which has been decom\u00admis\u00adsioned since 2017. The concept envisaged using electricity from renewable energies (wind or solar energy) to [\u2026]<\/p>\n","protected":false},"author":1,"featured_media":317,"parent":996,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-full-width-image.php","meta":{"wp_typography_post_enhancements_disabled":false,"_hupa_show_title":true,"_hupa_custom_title":"","_hupa_title_css":"","_hupa_select_menu":1,"_hupa_select_sidebar":1,"_hupa_show_social_media":false,"_hupa_select_social_type":0,"_hupa_select_social_color":0,"_hupa_social_media_css":"","_hupa_select_handy_menu":1,"_hupa_select_top_area":1,"_hupa_show_bottom_footer":true,"_hupa_show_top_footer":false,"_hupa_show_widgets_footer":false,"_hupa_sticky_widgets_footer":1,"_hupa_select_header":0,"_hupa_select_container":0,"_hupa_top_area_container":0,"_hupa_main_container":0,"_hupa_select_footer":0,"_hupa_show_menu":true,"_hupa_show_custom_url":false,"_hupa_beitragsbild_url":"","footnotes":""},"class_list":["post-1026","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"\nPast projects - 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