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Dissertations / Theses on the topic 'Bioreaktorok'

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Published: 4 June 2021
Last updated: 7 February 2022

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1

Hellebrandt, Aniko. "The potential of biodegradation on 1, 1, 1-trichloro-2, 2-bis (p-chlorophenyl) ethane, based upon co-metabolism of indigenous bacteria." Thesis, Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-10339.

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The purpose of this project is to evaluate the potential of a bioreactor system to degrade DDT based upon co-metabolism of indigenous bacteria. The study was performed with soil samples spiked with four different concentrations of DDT. The prepared sludge was circulated at a steady rate of revolution per minute in bioreactors with added M8 solution, cabbage leaf extract and molasses. The experiment was carried out for 7 days and chemical analysis and toxicity testing was accomplished at the beginning and the end of the experiment. The chemical analysis was essential to support the conclusions of the ecotoxicology tests. Ecotoxicology test was performed for the assessment of the toxicity (in terms of bioavailable measures) of the sludge samples, and was carried out with the Ostracodtoxkit sediment toxicity test, with the freshwater benthic crustacean test species Heterocypris incongruens. As part of the project the potential of the bioremediation method phytoremediation have been studied. Brassica Juncea seeds have been cultivated in the soil spiked with four different concentrations of DDT for one month, under stable circumstances. Growth of the plants was measured at the end of the experiment, and a chemical analysis was carried out. A thorough literature review was carried out for both the bioreactor and the phytoremediation experiments in order to obtain information about methods and theoretical background. The ecotoxicology tests and the chemical analysis showed increased p,p’- DDT concentrations in the bioreactors I. and II. at the end of the 7 day experiment, the reasons of which are not known, and require further studies.
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2

Klinková, Lucie. "Vybrané mikrobiální procesy v bioreaktoru." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2014. http://www.nusl.cz/ntk/nusl-217069.

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This thesis focuses on the study of the influence of selected parameters on the course of microbial cultivation and evaluation of bioprocess. It is divided into two parts. The first part deals with the production of mutant forms of the protein cryptogein yeast Pichia pastoris. The theoretical part summarizes the findings of the yeast P. pastoris and its expression. It also deals with cryptogein that induces defense reactions in plants. In the experimental part was produced mutant cryptogein X24, in which the concentration of each fraction and the ability to transfer sterols. The second part of this thesis is focused on aerobic and anaerobic oxidation of elemental sulfur by Acidithiobacillus ferrooxidans. In the theoretical section, our knowledge on A. ferrooxidans, its metabolism and the importance of ATP in cell metabolism was summarized. In the experimental part, the above bioprocess was monitored using pH, biomass concentration, the rate of oxidation of elemental sulfur the cellular ATP content.
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3

Chlopčíková, Anna. "Odstraňování fosforu v denitrifikačním bioreaktoru." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-392060.

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Nitrogen and phosphorus are involved in many processes on the Planet Earth. Especially in agricultural areas water is contaminated by nutrients, which can cause the eutrophication of surface waters, and other problems. The solution could be use of denitrifying bioreactors, which are used for the reduction of high nitrate concentrations in shallow groundwaters. The subject of the thesis was the study of phosphorus removal in the denitrification bioreactor by steel turnings, which are constituent part of the organic load of the bioreactor. Steel turnings release Fe, which causes the precipitation and adsorption of P. Eight bioreactors were filled with poplar woodchips. To these columns just above the surface were added model water enriched with nitrate nitrogen, phosphate phosphate was added to 4 columns, where two of them were enhanced by the addition of steel turnings upstream of the wood medium. Sampling and the analyses of the samples were determined weekly, determination of the phosphorus, iron and other substances necessary for the detection of processes in the bioreactor was performed. The dependence of phosphorus removal on the bioreactor operating conditions was evaluated based on measured data, and the effect of iron on the biological denitrification process was also assessed. Steel turnings have been found to be effective in removing TP, but it is necessary to solve iron leaching in the future. The concentration of phosphorus was reduced up to 0 mg/l on the effluent from the denitrification bioreactors, efficiency of phosphorus removal reached 100 %. The presence of steel chips had no effect on denitrification speed. The denitrification process was also successful in the phosphorus removal columns. From the point of view of leaching of substances and iron, the removal of N and P seems to be preferable in dry period during stoppage with no water fillings. Shutdown of bioreactors with flooded filling caused high concentrations of leached iron up to 149 mg/l
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4

Wagner, Bernhard. "Leistungsvergleich von Bioreaktoren für mycelförmiges Wachstum /." [S.l.] : [s.n.], 1987. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=8225.

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5

Ukropcová, Iveta. "Automatizovaný bioreaktor pro kultivaci živých buněk." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417105.

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Control of cultivation conditions in the~live cell imaging extends the possibilities of biological experiments and makes the experimental results more reliable. In order to change the~cultivation conditions in a controlled manner and increase the reproducibility of the experiments, it is necessary to reduce the amount of manual operations and replace them with automated procedures. Therefore, the concept of a new automated culture device (bioreactor) was created. This device controls the exchange of medium in the observation chamber, ensures the circulation and exchange of the atmosphere and controls its composition. The bioreactor is intended for use in the Laboratory of Experimental Biophotonics. This laboratory is equipped with coherence-controlled holographic microscope (CCHM), which uses quantitative phase imaging (QPI) method. Thus, the bioreactor is adapted to the current requirements of this laboratory and optical elements of the bioreactor meet the requirements of the QPI method. This text specifies the cultivation conditions of the living cells and summarizes, how the conditions could be controlled in the live cell microscopy. Next some commercially available culture devices are described and assessed, whether they are convenient for the~use in Laboratory of Experimental Biophotonics. The crucial part of the thesis is the~design, construction and testing of the new bioreactor.
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6

Novák, David. "Kombinovaná výroba tepla a bioplynu pomocí bioreaktoru." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2018. http://www.nusl.cz/ntk/nusl-376932.

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This diploma thesis deals with the bioreactor system and its use for the production of heat and biogas. The bioreactor uses the composting and metanogation process of fermentation that humanity has known for hundreds of years, but the combination of these processes is a relatively unexplored area. The theoretical part of the thesis analyzes the existing possibilities of utilization of the heat generated in the compost, and also describes the used technology of small biogas stations and other small systems for biogas production. It follows the practical part of the work, when it was the task to design a bioreactor working at low temperatures during the winter. Part of the solution is the initial design and testing of the basic test structure of the bioreactor, followed by the implementation of a more advanced and more complex system, including a control and measuring center realized by a microcontroller.
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7

Askevold, Ingolf Harald. "Kultivierung von Fibrochondrozyten in einem druckpulsierenden Bioreaktor." Giessen : VVB Laufersweiler, 2009. http://d-nb.info/995993289/04.

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8

Peter, Cyril Patrick. "Auslegung geschüttelter Bioreaktoren für hochviskose und hydromechanisch empfindliche Fermentationssysteme." [S.l.] : [s.n.], 2006. http://deposit.ddb.de/cgi-bin/dokserv?idn=984410937.

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9

Lotter, Stefan [Verfasser]. "Leistungseintrag und hydrodynamische Phänomene in geschüttelten Bioreaktoren / Stefan Lotter." Aachen : Shaker, 2003. http://d-nb.info/1179019350/34.

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10

Kopp, Thomas Jakob. "Zusammenhang zwischen Hydrodynamik und Stofftransport im Torus-Bioreaktor /." [S.l.] : [s.n.], 1985. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=7913.

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11

Jaconelli, Sebastian. "Utvärdering av kvävereduktion i en passiv denitrifierande bioreaktor." Thesis, KTH, Skolan för kemivetenskap (CHE), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-220715.

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Kväve har tidigare endast utvunnits ur atmosfären med hjälp av naturligt förekommande kvävefixerande bakterier men i och med uppkomsten av Haber-Bosch processen under tidigt 1900 – tal har det blivit möjligt att utvinna kväve ur atmosfären på kostgjord väg. Detta har lett till en obalans i kvävets naturliga kretslopp. Kväve har, sedan processen kom i bruk, utvunnits i stora kvantiteter för användning som bland annat gödningsmedel i jordbruksindustrin och som komponent i vanligt förekommande sprängmedel.   Kväveformen som används i dessa industrier är nitrat-, (NO3-)-, vilket fungerar som näringsämne åt växter. Då överskott av nitrat lakas ut, löser sig och sprids med vatten, kan det leda till övergödning i sjöar, hav och vattendrag. Ett hav som är hårt drabbat av detta är Östersjön.   Biologiska reningsmetoder har länge använts för att rena vatten från olika vattenlösliga kväveformer som nitrat, nitrit-, (NO2-), och ammonium-, (NH4+). De biologiska reningsmetoderna härstammar från kvävets kretslopp där de förekommer naturligt och innefattar processerna denitrifikation, nitrifikation och anammox. Genom att skapa förhållanden som gynnar de olika biologiska processerna har de effektivt använts för kväverening vid både kommunala reningsverk och för rening av dräneringsvatten från jordbruk. Processerna kan kombineras i olika utformningar eller användas enskilt beroende på vilken kväveform som förekommer i vattnet.   System för rening av nitratutsläpp härstammande från sprängmedel är relativt nytt. Denna rapport beskriver anläggningen och uppföljningen av en passiv denitrifierande bioreaktor med syfte att rena vatten från nitrat härstammande från sprängmedel. Bioreaktorn är den andra i sitt slag i Sverige och utöver dessa två förekommer inga andra bioreaktorer som renar vatten från sprängmedel i Sverige idag.   Rapporten innehåller en utvärdering av bioreaktorns nitratreduktion och jämför metoden med andra vanliga systemutformningar och metoder för nitratrening. Jämförelsen och utvärderingen har gjorts med hjälp av en litteraturstudie och genom kemiska analyser. Den kemiska analysen omfattar analys av nitratkväve, ammoniumkväve, pH, alkalinitet, temperatur och elektrisk konduktivitet.   Vattenprover har tagits under uppstart perioden av bioreaktorn vilket och har omfattat de 36 första dagarna från och med att bioreaktorns driftstart den 2017-06-29 till och med 2017-08-02. Under denna tid har bioreaktorn uppvisat en nitrat- och ammoniumproduktion i kombination med en alkalinitetförbrukning. Alkalinitetförbrukningen har med största sannolikhet uppkommit till följd av nedbrytningen av det organiska materialet och nitrat- och nitratproduktionen kommer av ett lågt C/N förhållande i de träslag som används som kolkälla. Ammoniumproduktionen härstammar förmodligen från en kombination av den förbrukade alkaliniteten och C/N förhållandet i trädslagen. Analysresultaten har på grund av dessa resultat inte kunnat bidra till en utvärdering av bioreaktorn. Litteraturstudien visar dock att den denitrifierande bioreaktorn är det reningssystem som är mest lämpat för nitratrening med hänsyn till de förhållanden som råder avseende den omgivande miljön och vattnets kemiska innehåll. Studien visar även att ett antal förändringar i utformningen av bioreaktorn skulle kunna öka bioreaktorns driftsäkerhet.
Nitrogen has previously only been extracted from the atmosphere by naturally occurring nitrogen-fixing bacteria, but with the development of the Haber-Bosch process in the early 1900s it has been made possible to extract nitrogen from the atmosphere artificially. This has led to an imbalance in nitrogen’s natural cycle. Nitrogen has, since the process has been put in use, been extracted in large quantities for the use as a fertilizer in the agricultural industry and as a component of commonly used explosives.   The nitrogen form used in these industries is nitrate, (NO3-), which acts as a nutrient to plants. As excess nitrate dissolves and spreads with water it can lead to eutrophication in lakes, seas and streams. A sea largely affected by this is the Baltic Sea.    Biological treatment methods have long been used to purify water from various water-soluble nitrogen forms such as nitrate, nitrite, (NO2-), and ammonium, (NH4+). The biological purification methods are derived from the nitrogen cycle where they occur naturally and they include the processes of denitrification, nitrification and anammox. By creating conditions that benefit the various biological processes, they have effectively been used for removing nitrogen in both municipal wastewater treating plants and for drainage water from agriculture. The processes can be combined in different designs or used individually depending on the nitrogen form present in the water.   Systems for purifying water from nitrate originating from explosives are a relatively new. This report describes the construction and follow-up of a passive denitrifying bioreactor used to purify water from nitrate derived from explosives. The bioreactor is the second of its kind in Sweden and in addition to these two there are no other bioreactors that treat water impacted by explosives in Sweden today.   The report contains an evaluation of the bioreactors nitrate reduction and compares the method with other commonly used system designs and methods for nitrate purification. The comparison and evaluation has been made using a literature study and through chemical analyses. The chemical analyses include analysis of nitrate, ammonia, pH, alkalinity, temperature and electrical conductivity.   Water samples have been collected during the start-up period of the bioreactor which includes the first 36 days from the day the bioreactor was put in operation, 2017-06-29 through 2017-08-02. During this time the bioreactor has demonstrated a nitrate- and ammonia production in combination with alkalinity consumption. The alkalinity consumption is most likely do to the degradation of the organic material and the nitrate production comes from a low C/N ratio in the woods used as source for carbon. Ammonia production is likely to derive from a combination of the alkalinity consumption and the C/N ratio in the woods. Because of these results, the results of the analysis have not been able to contribute to the evaluation of the bioreactor. However, the literature study shows that the denitrifying bioreactor is the most suitable purification system for nitrate purification, taking into consideration the environmental conditions and the waters chemical content. The study also shows that a number of changes in the design of the bioreactor could increase the bioreactors reliability.
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12

Krebser, Urs André. "Biologische Leistungsfähigkeit des Torus-Bioreaktors unter Variation der Mediumseigenschaften /." [S.l.] : [s.n.], 1987. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=8213.

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13

Henkel, Steffen [Verfasser]. "Entwicklung eines Multisensoradapters zum Einsatz in disposable Bioreaktoren / Steffen Henkel." Hannover : Technische Informationsbibliothek und Universitätsbibliothek Hannover (TIB), 2013. http://d-nb.info/1042067600/34.

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14

Esterl, Stefan. "Numerische Simulation der Strömung und des Stofftransportes in Festbett-Bioreaktoren." [S.l. : s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=963761269.

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15

Schierenbeck, Anne. "Membranfiltration und Bioreaktor zur Eliminierung chlorierter Kohlenwasserstoffe aus Industrieabwässern /." Aachen : Shaker, 2003. http://www.agi-imc.de/intelligentSEARCH.nsf/alldocs/C54EF3D4E30BEA12C12572830024FBD5/File/000000000000000000000-101001ZFE565.PDF?OpenElement.

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16

Noke, Anja. "Behandlung von Bohrspülschlämmen im Bioreaktorverfahren /." Leipzig : Umweltforschungszentrum, 2003. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=010617109&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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17

Möllmann, Rosali [Verfasser], and Helmut [Akademischer Betreuer] Schubert. "Gefügeentwicklung von biokompatiblen Keramikschäumen für Bioreaktoren / Rosali Möllmann. Betreuer: Helmut Schubert." Berlin : Universitätsbibliothek der Technischen Universität Berlin, 2012. http://d-nb.info/1025739566/34.

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18

Gälli, René. "Optimierung des mikrobiellen Abbaus von Dichlormethan in einem Wirbelschicht-Bioreaktor /." [S.l.] : [s.n.], 1986. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=7994.

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19

Polášek, Daniel. "Anaerobní membránový bioreaktor (AnMBR) pro čištění odpadních vod potravinářského průmyslu." Doctoral thesis, Vysoké učení technické v Brně. Fakulta stavební, 2018. http://www.nusl.cz/ntk/nusl-390271.

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The most significant environmental problems related to the food industry is water consumption and pollution, energy consumption and waste production. Most of the water that does not become a part of the products ultimately leaves plants in the form of wastewater, which is often very specific and requires adequate handling / treatment / disposal. For the purpose of this thesis, brewery industry was chosen, because of its very long tradition in the Czech history and culture. Anaerobic technologies are applied for still wider range of industrial wastewater treating. In general anaerobic membrane bioreactors (AnMBRs) can very effectively treat wastewater of different concentration and composition and produce treated water (outlet, permeate) of excellent quality, that can be further utilised. At the same time, it can promote energy self-sufficiency through biogas production usable in WWTPs / plants. Main disadvantages include unavoidable membrane fouling and generally higher CAPEX / OPEX. Within the framework of Ph.D. studies and related research activities, immersed membrane modules for anaerobic applications were selected and lab-scale tested (designed and assembled laboratory unit), an AnMBR pilot plant was designed, built and subsequently tested under real conditions - at Černá Hora Brewery WWTP (waste waters from the brewery and associated facilities). The pilot AnMBR and the technology itself has been verified over more than a year (5/2015 – 11/2016) of trial operation - the initial and recommended operational parameters have been set up, minor construction adjustments / modifications and measurement & regulation optimizations have been made, the recommended membrane cleaning and regeneration procedure has been verified. Last, but not least, conclusions and recommendations of the trial operation were summarised - some key findings and recommendations for further operation, use and modifications of the existing AnMBR pilot plant are presented.
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Boll, Marco. "Einsatz von Fuzzy-Control zur Regelung verfahrenstechnischer Prozesse /." Paderborn : FIT-Verl, 1997. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=007645372&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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21

Schmalzriedt, Sven. "CFD-Simulationen von Mischvorgängen und biotechnischen Stoffumsetzungen in begasten Rührkesselreaktoren." [S.l. : s.n.], 2001. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB9578218.

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22

Hansen, Sven [Verfasser]. "Weiterentwicklung einer Methode zur Bestimmung von Atmungsraten in geschüttelten Bioreaktoren / Sven Hansen." Aachen : Hochschulbibliothek der Rheinisch-Westfälischen Technischen Hochschule Aachen, 2013. http://d-nb.info/1035621673/34.

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23

Schierenbeck, Anne [Verfasser]. "Membranfiltration und Bioreaktor zur Eliminierung chlorierter Kohlenwasserstoffe aus Industrieabwässern / Anne Schierenbeck." Aachen : Shaker, 2003. http://d-nb.info/1174513179/34.

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24

Öberg, Emilia. "Ammoniumkvävereduktion vid lakvattenrening med mobil bioreaktor : vid olika temperaturer och fosfortillskott." Thesis, Karlstads universitet, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-56711.

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Behovet av energieffektiva och välfungerande vattenreningssystem är stort, och växer i takt med den ökande befolkningsmängden. Lakvatten bildas då framförallt nederbörd rinner genom deponerat avfall. Problematiken kring lakvattenrening består i att bassängerna är placerade utomhus, vilket medför låga temperaturer under vinterhalvåret. Då lakvattenrening i huvudsak utförs med biologisk reningsteknik, medför de låga temperaturerna en sänkning i den bakteriella aktiviteten vilket försämrar reningseffektiviteten. Ett annat problem som ofta uppstår vid lakvattenrening är att det förorenade vattnet ofta består av höga halter kväve, medan fosforhalterna är låga. Detta ger en obalans i bakteriernas metabolism och kan leda till begränsningar i reningseffektivitet. I detta arbete har en nyutvecklad bioreaktor, som testas på Djupdalens avfallsanläggning, undersökts. Bioreaktorn togs i drift under hösten 2015 samt från april – december 2016. Mätdata från Djupdalen baserat på månatliga vattenprover och kemiska analyser för 2014 – 2016, har studerats för att ta reda på bioreaktorns bidrag till reningseffektvitet av ammoniumkväve. Egna vattenprovtagningar har utförts under maj 2017, där reningseffektivitet och aktiv biofilmsyta vid driftsättning av bioreaktorn studerats. Slutligen utfördes försök där biofilm från Djupdalen testats vid 17 – 18 liksom 12 – 15 ˚C med olika halter fosfortillskott, för att undersöka huruvida reningseffektiviteten kan förbättras om fosforhalten höjs. Resultaten tyder på att bioreaktorn bidrar till kraftig förbättring av reningseffektiviteten i luftningsbassängen, men förbättringspotential finns. Flera av de miljömässiga faktorerna i luftningsbassängen medför mindre gynnsamma förhållanden för den bakteriella tillväxten, såsom temperaturer under 15 ˚C, kraftiga underskott av fosfor i det inkommande lakvattnet och något för basiska pH värden. Genom egna vattenprovtagningar och medföljande kemiska analys framkom det att temperaturer över 15 ˚C i lakvattnet gynnar en snabbare utveckling av biofilmen. Slutligen visade laborativa försök att fosfortillskott vid temperaturer på 12 - 15 ˚C medförde en ökad reningseffektivitet, medan resultatet var oförändrat för temperaturer på 17 – 18 ˚C vid en uppehållstid på 24 timmar. Däremot visar en lägre uppehållstid på 16 timmar, att fosfortillskott påverkar försöken positivt för båda temperaturerna. Detta tyder på att ett fosfortillskott under hösten i luftningsbassängen, när temperaturerna i lakvattnet går under 15 ˚C, bör kunna medföra att bioreaktorn kan förbättra sin reningseffektivitet, trots den sjunkande lakvattentemperaturen.
The need for energy efficient and well-functioning water treatment systems is high, and grows as the growing population increases. Leachate is formed as water flows through landfilled waste. The problem of leachate treatment is that the reactors are located outdoors, which causes low temperatures during the winter months. As the leachate treatment is mainly carried out with biological purification techniques, the low temperatures cause a decrease in bacterial activity, which reduces the purification efficiency. Another problem that often arises in this type of water treatment is that the contaminated water consists of high nitrogen levels, while phosphorus levels are low. This gives an imbalance in the metabolism of the bacteria and can lead to limitations in purification efficiency. In this work, a newly developed bioreactor, which is tested at Djupdalen's waste facility, has been investigated. The bioreactor was put into operation in autumn 2015 and from April to December 2016. Measurement data from Djupdalen based on monthly water samples and chemical analyzes for 2014-2016 have been studied to find out the bioreactor's contribution to the purification efficiency of ammonium nitrogen. Water sampling was carried out in May 2017, where purification efficiency and active biofilm surface were calculated during the operation start of the bioreactor. Finally, experiments were performed where biofilms from Djupdalen were tested at 17-18 as well as 12-15 ° C with different levels of phosphorus supplementation, to investigate whether purification efficiency could be improved if phosphorus levels were increased. The results indicate that the bioreactor contributes to a significant improvement in the purification efficiency of the aeration reactor, but there is still an improvement potential. Several of the environmental factors in the aeration reactor cause less favorable conditions for bacterial growth, such as temperatures below 15 ˚C, severe phosphorus deficiency in the incoming leachate and slightly for basic pH values. Through water sampling and the accompanying chemical analysis it was found that temperatures above 15 ˚C in the leachate favor a faster development of the biofilm. Finally, laboratory experiments showed that phosphorus additions at temperatures of 12-15 ° C resulted in increased purification efficiency, while the result was unchanged for temperatures of 17-18 ° C at a water residence time at 24 hours. However, at a lower water residence time of 16 hours, the phosphorous supplement gave an effect for both temperatures. This indicates that a phosphorus supplement during the autumn of the aeration reactor, when the temperatures in the leachate go below 15 ˚C, should allow the bioreactor to improve its purification efficiency despite the sinking water temperature.
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Širmerová, Marcela. "Adheze jednobuněčných řas Chlorella vulgaris na pevné povrchy." Doctoral thesis, Česká zemědělská univerzita v Praze, 2015. http://www.nusl.cz/ntk/nusl-259619.

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Although adhesion of bacteria and yeast have been extensively studied by a wide range of experimental and theoretical approaches, significantly less attention has been focused on microalgal adhesion to solid materials. Therefore this doctoral thesis is focused on physico-chemical aspects of microalgal adhesion. The results are based on experimental characterization of surface properties of both microalgae and solids by contact angle and zeta potential measurements. These data were subsequently used in modeling the surface interactions (thermodynamic, classical and extended DLVO models) resulting in quantitative prediction of the interaction intensities. Finally, the model predictions are compared with experimental adhesion tests of microalgae onto model solids in order to identify the physico-chemical forces governing the microalgae-solid interaction. The model solids were prepared in order to cover a wide range of properties (hydrophobicity, surface charge). The results revealed that in low ionic strength environment the adhesion was influenced mostly by electrostatic attraction/repulsion between surfaces, while with increasing ionic strength grew the importance of apolar (hydrophobic) interactions. Among tested materials the highest adhesion of Chlorella vulgaris cells was observed to (3-aminopropyl)triethoxysilane modified glass (APTES glass) mimicking the surface properties of stainless steel. The impact of solid surface properties on the degree of colonization by microlagae was statistically more significant than the influence of culture medium composition on cell surface of Chlorella vulgaris.
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Wolff, Christoph Berend [Verfasser]. "Entwicklung und Anwendung eines modularen Bioreaktors mit tubulären Membranen / Christoph Berend Wolff." Hannover : Technische Informationsbibliothek und Universitätsbibliothek Hannover (TIB), 2013. http://d-nb.info/1035430517/34.

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Hauptmann, Ulla. "Kontinuierliche Co-Kultur von Tetrahymena thermophila und Pseudomonas putida in einem Bioreaktor." [S.l. : s.n.], 2000. http://deposit.ddb.de/cgi-bin/dokserv?idn=959412255.

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Grzeganek, Peter. "Untersuchungen zum Sekundärmetabolismus mariner Pilze, Naturstoffscreening und Bioprozessoptimierung mit Hilfe eines kontinuierlichen Bioreaktors." [S.l.] : [s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=971895155.

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Hammerschmid, Florian [Verfasser], and Peter E. [Akademischer Betreuer] Müller. "Elektromagnetische Stimulation mesenchymaler humaner Stammzellen im Bioreaktor / Florian Hammerschmid. Betreuer: Peter E. Müller." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2016. http://d-nb.info/1105374084/34.

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Lindmark, Johan. "Anaerob nedbrytning av TNT : Ett bioreaktorförsök på Vingåkersverken." Thesis, Mälardalen University, School of Sustainable Development of Society and Technology, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-4480.

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A bioslurry reactor was built for the bioremediation of TNT contaminated waste from the demilitarization industry. The field test was conducted at Vingåkersverken in Vingåker, Sweden, to see if results from laboratory studies could be repeated in a full scale reactor. The goal of the project was to optimize the reactor to such a degree that it could be used to handle the waste produced at Vingåkersverken and also that this technique could be applied for remediation of contaminated soils. Unfortunately the samples taken during the full scale field test were destroyed by the shipping company and no analysis was possible. A later attempt by the Biorex research group has also been unsuccessful to reduce the amount of TNT using the bioreactor. How are we going to reach the results from the laboratory studies? The work continues.

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31

Lucumi, Hernandez Saulo Alexander. "Prozesstechnische Optimierung des molecular farming glykosylierter Proteine in Photo-Bioreaktoren mit dem Moos Physcomitrella patens." Karlsruhe Univ.-Verl. Karlsruhe, 2007. http://d-nb.info/988423154/04.

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Leibold, Christian [Verfasser]. "Drahtlos gekoppelte Sensoreinheiten für das Monitoring von organischen Kultivierungsprozessen in Tissue Engineering Bioreaktoren / Christian Leibold." München : Verlag Dr. Hut, 2017. http://d-nb.info/1139538551/34.

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Lucumi, Hernandez Saulo Alexander. "Prozesstechnische Optimierung des Molecular Farming glykosylierter Proteine in Photo-Bioreaktoren mit dem Moos Physcomitrella patens." Karlsruhe : Universitätsverlag, 2008. http://digbib.ubka.uni-karlsruhe.de/volltexte/1000007536.

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34

Horstmann, Verena. "Physcomitrella patens (Hedw.) B.S.G. als Bioreaktor quantitative Promotoranalyse und Produktion eines komplexen humanen Blutgerinnungsfaktors /." [S.l.] : [s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=974207357.

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Finkbeiner, Tim [Verfasser], and A. E. [Akademischer Betreuer] Guber. "Entwicklung eines mikrofluidischen Bioreaktors für die Kultivierung von Pflanzenzellen / Tim Finkbeiner ; Betreuer: A. E. Guber." Karlsruhe : KIT-Bibliothek, 2019. http://d-nb.info/1192373588/34.

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36

Peuker, Thorsten. "Modellgestützte Verfahren zur Beobachtung und Steuerung bioverfahrenstechnischer Prozesse /." Düsseldorf : VDI-Verl, 2006. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=014862309&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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Kusch, Sigrid. "Methanisierung stapelbarer Biomassen in diskontinuierlich betriebenen Feststofffermentationsanlagen." München Utz, 2007. http://deposit.d-nb.de/cgi-bin/dokserv?id=2985247&prov=M&dok_var=1&dok_ext=htm.

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Bajaj, Mini. "Treatment of phenolic wastewater in suspended and fixed bed bioreactors." Karlsruhe : Universitätsverlag, 2008. http://digbib.ubka.uni-karlsruhe.de/volltexte/1000009916.

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Rausch, Mareike Katharina [Verfasser]. "Optimierung der Proteinexpression in Insektenzellen und Scale-up in den Wave-Bioreaktor / Mareike Katharina Rausch." Aachen : Shaker, 2011. http://d-nb.info/1070152048/34.

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Böhm, Stefanie [Verfasser]. "Entwicklung spezialisierter Bioreaktoren für die gezielte Differenzierung von Stammzellen und ihr Einsatz im Tissue Engineering / Stefanie Böhm." Hannover : Technische Informationsbibliothek und Universitätsbibliothek Hannover (TIB), 2011. http://d-nb.info/1014361613/34.

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Aurich, Hendryk. "Anwendung modifizierter, magnetisierter Polymerpartikel als Trägermaterial zur Enzymimmobilisierung und zur Zellkultivierung in einem magnetisch stabilisierten Bioreaktor." [S.l. : s.n.], 1998. http://deposit.ddb.de/cgi-bin/dokserv?idn=960670750.

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Fredin, Marcus. "Alger som energikälla - en svensk möjlighet." Thesis, Jönköping University, JTH, Chemical Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-10157.

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Examensarbetet har gjorts i samarbete med SP, Sveriges tekniska forskningsinstitut. De vill genom denna rapport börja få svar på frågan, om det är lönsamt att odla alger till biodieselframställning under svenska förhållanden, för att sedan möjligen påbörja en forskning inom området.

Rapporten granskar till en början, via informationssökning, vad som är gjort tidigare och vilka företag och forskare som arbetar inom området idag. Därefter undersöks de steg som algerna genomgår för att bli biodiesel, det vill säga odling, skördning, utvinnande av algolja och slutligen framställningen av biodiesel ifrån algoljan.

Olika alger, utrustningar och metoder studeras och ekonomiska siffror sammanställs vad gäller produktionen av alg-biodiesel. Slutligen undersöks vilket intresse området har hos olika svenska företag. Problemområden tillsammans med effektiviseringar diskuteras.

Resultatet är ett flödesschema över en önskemodell för svenska förhållanden. Flödesschemat innehåller de lösningar och metoder som förväntas ha stor potential, dock så fastslås det inte att det skulle vara den enda lösningen. Höjdpunkterna i denna modell är användandet av en mixotrof alg som odlas i slutna bioreaktorer. Algerna ska få en ökad tillförsel av koldioxid ifrån till exempel kraftvärmeverk tillsammans med glycerol, vilket gynnar tillväxten med möjligen upp till tretton gånger. Glycerol är en biprodukt vid biodieselframställning vilket därmed kommer att göra det till ett billigt näringsmedium vid mixotrof växt. Även värme är en restprodukt som tillförs algerna ifrån kraftverket. Denna metod kommer samtidigt fungera som koldioxidrening och kväveoxidrening för kraftvärmeverket.

Rapporten visar även på att övergött vatten, innehållande fosfor och kväve, kan renas med algerna och detta tillförs med fördel till de slutna bioreaktorerna.

Skördning av algerna görs genom flotation med löst syre eller genom att störa koldioxidflödet. Både syre och koldioxid kan tillföras ifrån andra steg i flödesschemat. Oljan extraheras fördelaktligen ifrån algerna med hjälp av produkten biodiesel och oljan omvandlas därefter till mer biodiesel genom transesterifiering med hjälp av mikrovågor.

Resultatet visar också att alg- biomassan kan användas till att framställa en rad olika restprodukter, där djurfoder, föda till tredje världen, bioplast och andra biobränslen är de mest intressanta.

Rapporten visar på ett stort intresse ifrån olika aktörer inom bland annat flygindustrin, kärnkraftverk, oljebolag och energibolag i Sverige.

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Freimark, Denise. "Entwicklung und Charakterisierung von Bioprozessen zur Produktion osteoinduktiver Wachstumsfaktoren in Chinese-Hamster-ovary-Zellen /." Berlin : Köster, 2008. http://d-nb.info/99107095X/04.

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44

Bajaj, Mini. "Treatment of phenolic wastewater in suspended and fixed bed bioreactors /." Karlsruhe : Universitätsverlag, 2009. http://digbib.ubka.uni-karlsruhe.de/volltexte/1000009916.

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Giese, Christoph. "Langzeitkultur primärer Lutealzellen des bovinen Corpus luteum in einem kontinuierlichen Bioreaktor und Untersuchung der Progesteronproduktion in vitro." [S.l.] : [s.n.], 1999. http://deposit.ddb.de/cgi-bin/dokserv?idn=95848709X.

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Ålander, Marléne. "Uppstart av en bioreaktor för sidoströmshydrolys vid ett reningsverk : och dess inverkan på biologisk kväve- och fosforavskiljning." Thesis, Uppsala universitet, Institutionen för biologisk grundutbildning, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-255388.

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Hundt, Boris [Verfasser]. "Entwicklung und Optimierung eines Herstellungsprozesses für einen Parvovirus-Impfstoff im Rührreaktor und Wave® Bioreaktor / Boris Hundt." Aachen : Shaker, 2008. http://d-nb.info/1164341200/34.

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Langsch, Angelika. "Entwicklung und Charakterisierung eines 24Well-Mini-Bioreaktors mit sauerstoffpermeablem Membranboden für pharmakologisches In-vitro-Screening an primären Zellen." [S.l.] : [s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=967349702.

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Knoll, Arnd Jürgen. "Betrieb von Rührkesselbioreaktoren unter erhöhten Reaktordrücken." Berlin Pro Business, 2007. http://d-nb.info/988097656/04.

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Knoll, Arnd Jürgen. "Betrieb von Rührkesselbioreaktoren unter erhöhten Reaktordrücken /." Berlin : Pro Business, 2008. http://d-nb.info/988097656/04.

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