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Dissertations / Theses on the topic 'Bacteria, Nitrifying'

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Published: 4 June 2021

Last updated: 28 January 2023

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1

McKinlay, Sarah M. "The interactions between ammonifying and nitrifying bacteria." Thesis, University of Aberdeen, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.338396.

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The effects of adhesion to surfaces on the specific growth rates of <I>Nitrosomonas europaea </I>and <I>Nitrobacter </I>sp. were determined in batch culture systems both in monoculture and co-culture. It was found that the presence of a glass slide in co-cultures of these bacteria significantly reduced the specific growth rates of both species of bacteria. In monoculture, the specific growth rate of <I>N. europaea </I>was significantly lower in a mature biofilm system. The specific rates of production of ammonia by these four species of <I>Pseudomonas </I>were investigated in minimal medium. A

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2

Jones, Nicole Jean. "NITRIFYING BACTERIAL ABUNDANCE IN RELATION TO NITROGEN AND PHOSPHORUS COMPOUNDS IN WETLANDS." OpenSIUC, 2012. https://opensiuc.lib.siu.edu/theses/829.

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Floodplain lakes are wetlands which receive flood waters from nearby rivers or other sources. Water samples were taken from floodplain lakes near the Illinois River, the Mississippi River, and the Cache River in Southern Illinois. Fluorescence in situ hybridization (FISH), spectrophotometry, and gene probes were used to investigate the effect of nutrient and chemical concentrations on the abundance of nitrifying bacteria; specifically ammonia-oxidizing Nitrosococcus and Nitrosomonadales and nitrite-oxidizing Nitrospira and Nitrobacter. Nitrosococcus was the dominant ammonia-oxidizing bacteria

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3

Cheatham, Amy Kathleen. "Responses of Nitrifying Bacteria to Aquaculture Chemotherapeutic Agents." Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/26879.

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As in any animal production industry, disease is inevitable; therefore, it is imperative that aquaculturists are able to effectively manage the disease and maintain their high production levels in an effort to bridge the gap between supply and demand in the seafood industry that has been caused in part by global over-fishing. This management responsibility lies not only in understanding the impact of the treatment on the cultured species, but also in understanding the impact of the treatment to the aquaculture system as an ecosystem. Currently, there is a narrow variety of chemicals approved b

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4

Song, Weining. "Some aspects of the utilization of inorganic nitrogen compounds and carbon compounds by "Nitrobacter hamburgensis" /." Title page, contents and summary only, 1987. http://web4.library.adelaide.edu.au/theses/09A/09as724.pdf.

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5

Smith, Timothy R. "Evaluating the effectiveness of commercial nitrifying bacteria in a constructed wetland." Virtual Press, 1996. http://liblink.bsu.edu/uhtbin/catkey/1020149.

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This research was conducted to determine the effects of commercially available nitrifying bacteria in a constructed wetland. The study was conducted at Paws, Inc., near Desoto, Indiana during the summer of 1995. The wetland, called Solar Aquatics Treatment System (SAS), was developed by Ecological Engineering Associates and constructed in a, greenhouse. The commercial nitrifying bacteria (Bacta-Pur), contained Nitrosomonas and Nitrobacter Spp. and have been added to the wetland for the past five years to aid in the removal of nitrogen.Water samples were taken from the wetland and analyzed for

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6

Hughes, Leonie. "Multistage and multiple biomass approaches to efficient biological nitrogen removal using biofilm cultures." Thesis, Hughes, Leonie ORCID: 0000-0001-6496-988X (2008) Multistage and multiple biomass approaches to efficient biological nitrogen removal using biofilm cultures. PhD thesis, Murdoch University, 2008. https://researchrepository.murdoch.edu.au/id/eprint/674/.

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Nitrogen removal from wastewater is important for the revention of significant health and environmental impacts such as eutrophication. Nitrogen removal is achieved by the combined action of nitrification and denitrification. Nitrification is performed by autotrophic, slow growing microorganisms that require oxygen and are inhibited in the presence of denitrifiers when oxygen and COD are available due to competition for oxygen. Denitrification however, performed by relatively fast growing heterotrophic bacteria, is inhibited by oxygen and requires COD. This implies that nitrification and denit

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7

Hughes, Leonie. "Multistage and multiple biomass approaches to efficient biological nitrogen removal using biofilm cultures." Hughes, Leonie (2008) Multistage and multiple biomass approaches to efficient biological nitrogen removal using biofilm cultures. PhD thesis, Murdoch University, 2008. http://researchrepository.murdoch.edu.au/674/.

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Nitrogen removal from wastewater is important for the revention of significant health and environmental impacts such as eutrophication. Nitrogen removal is achieved by the combined action of nitrification and denitrification. Nitrification is performed by autotrophic, slow growing microorganisms that require oxygen and are inhibited in the presence of denitrifiers when oxygen and COD are available due to competition for oxygen. Denitrification however, performed by relatively fast growing heterotrophic bacteria, is inhibited by oxygen and requires COD. This implies that nitrification and denit

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8

Ray, Anirban. "Identification, Enumeration and Diversity of Nitrifying Bacteria in the Laurentian Great Lakes." Bowling Green State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1351276518.

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9

Lako, Joseph. "Analysis of ammonia-oxidizing bacteria associated with the roots of Proteaceae plant species in soils of Fynbos ecosystem." Thesis, University of the Western Cape, 2005. http://etd.uwc.ac.za/index.php?module=etd&amp.

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The major objective of this study was to investigate soil ammonia-oxidizing bacterial diversity and composition associated with plant roots of Proteaceae plants and to compare it with non-plant associated soil.

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10

Meng, Yiyu. "Nitrite oxidising bacteria in soil : examination of the interactions with ammonia oxidisers and the influence of pH on their diversity and distribution." Thesis, University of Aberdeen, 2016. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=231853.

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Nitrification is a central part of the nitrogen cycle, whereby the most reduced form, ammonia, is converted to the most oxidised form, nitrate via nitrite. The first step is performed by ammonia oxidising bacteria (AOB) and archaea (AOA), with the second step performed by nitrite oxidising bacteria (NOB). Although both groups are closely associated in nature, ammonia oxidisers have received more attention compared to NOB as ammonia oxidation is considered the rate-limiting step. Nitrobacter and Nitrospira are two important groups of soil NOB. To determine whether there are specific association

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11

Zaklikowski, Anna Emilia. "The Effect of Chlorine and Chloramines on the Viability and Activity of Nitrifying Bacteria." Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/33758.

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<p> Nitrification is a significant concern for drinking water systems employing chloramines for secondary disinfection. Utilities have implemented a range of disinfection strategies that have varying levels of effectiveness in the prevention and control of nitrification events, including optimizing the chlorine-to-ammonia ratio, maintaining chloramine residual throughout the distribution system, controlling pH, and temporal switching to free chlorination. Annual or semi-annual application of free chlorination is practiced by 23% of chloraminating systems on a temporary basis as a preventativ

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12

Cao, Huiluo, and 曹慧荦. "Molecular ecology of ammonia oxidizing archaea and bacteria." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2011. http://hub.hku.hk/bib/B47155358.

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The newly recognized ammonia-oxidizing archaea (AOA) makes re-evaluation of the contribution to ammonia oxidization by both AOA and ammonia-oxidizing bacteria (AOB) necessary and meaningful. The growing population and increasing anthropogenic activities around coastlines have affected wetland and coastal marine ecosystems through discharging polluted water containing large amounts of reactive inorganic nitrogen. The objectives of this study were to detect the phylogenetic diversity and abundance of ammonia oxidizers including AOA and AOB on different scales and to elucidate the distribution p

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13

Daims, Holger. "Population structure and functional analyses by in situ techniques of nitrifying bacteria in wastewater treatment plants." [S.l. : s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=963771582.

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14

Morris, Raymond Anthony. "Investigation of the Optimal Dissolved CO2 Concentration and pH Combination for the Growth of Nitrifying Bacteria." Scholar Commons, 2011. http://scholarcommons.usf.edu/etd/3256.

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Ammonium (NH4+) is a biological nutrient that is transformed in a wastewater treatment plant (WWTP) in a process called activated sludge. This is accomplished in an aerobic environment using microorganisms and inorganic carbon that convert the ammonium to nitrate (NO3-). This process is termed nitrification. Removal of ammonium is necessary due to its oxygen demand and toxicity to the environment. Nitrification is considered a slow process due to the slow growth rate of the nitrifying bacteria. Ammonia oxidizing bacteria (AOB) first covert the ammonium (NH4+) to nitrite (NO2-) followed by

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15

Repke, Rodrigo Alberto 1988. "Efeito de diferentes concentrações e estirpes da bactéria Azospirillum brasilense nos componentes de produção em plantas de trigo /." Botucatu, 2016. http://hdl.handle.net/11449/144493.

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Orientador: Silvio José Bicudo<br>Coorientador: Rogério Peres Soratto<br>Banca: Marcio Christian S. Domingues<br>Banca: Priscila Gonzales Figueiredo<br>Banca: Carlos Jorge da Silva<br>Banca: Luciano Soares de Souza<br>Resumo: O triticum aestivum é uma espécie de ciclo anual, pertencente à família Poaceae. Cultivado em regiões de climas subtropical e temperado, ocupa a segunda maior área plantada no mundo. Para obtenção de altas produtividade dentre outros cuidados, é essencial o fornecimento de nutrientes na quantidade demandada pelas cultivares de alto potencial produtivo, com destaque para o

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16

Moore, J. Michael. "Nitrification inhibition by metalaxyl as influenced by pH, temperature, and moisture content in three soils." Diss., Virginia Polytechnic Institute and State University, 1989. http://hdl.handle.net/10919/54249.

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Metalaxyl, [N—(2,6-Dimethylphenyl)-N-(Methoxyacetyl)-alanine methyl ester], is used extensively in tobacco (Nicotiana tabacum L.) production for prevention of black shank (Phytophthora parasitica Dast. var. nicotianae), blue mold (Peronospora tabacina Adam), and damping-off (Pythigm spp.). Metalaxyl is also patented as a nitrification inhibitor, although not marketed for that purpose. Proper maturity and ripening of flue-cured tobacco depends on an adequate supply of N through the time of removal of the inflorescence, with a declining supply of N from that point. Use of a chemical which might

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17

Hoang, Phuong Ha, Hong Thu Nguyen, Trung Thanh Trung, Thanh Tung Tran, Lan Phuong Do, and Thi Nhi Cong Le. "Isolation and selection of nitrifying bacteria with high biofilm formation for treatment of ammonium polluted aquaculture water." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-227866.

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A biofilm is any group of microorganisms in which cells stick to each other and adhere to a surface by excreting a matrix of extracellular polymeric substances (EPS). The chemoautotrophic nitrifying bacteria hardly form biofilms due to their extremely low growth rate; however, biofilm formation of nitrifying bacteria trends to attach in carrier by extracellular polysaccharides that facilitate mutual adhesion, the forming biofilm is also beneficial in nitrogen removal in biological filter systems, especially in aquaculture water treatment systems. The microbial activity within bio-carrier is a

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18

Shishido, Masahiro 1960. "Effectiveness of dominant Rhizobium meliloti indigenous to Arizona soil." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/276929.

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A total of 200 Rhizobium meliloti isolates were sampled from alfalfa (Medicago sativa L.) nodules in five uninoculated fields throughout Arizona. Dominant strains (≥ 20% nodule occupancy at each site) were identified using plasmid profile analysis and intrinsic antibiotic resistance patterns. The major dominant strains and a commercial strain (102F77b) were evaluated for their N fixing effectiveness in a Leonard jar study. All strains were highly effective, and no significant differences were found (p ≥ 0.05) in shoot weight, root weight, nodule weight, acetylene reduction and total N content

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Nyberg, Karin. "Impact of organic waste residues on structure and function of soil bacterial communities : with emphasis on ammonia oxidizing bacteria /." Uppsala : Dept. of Microbiology, Swedish University of Agricultural Sciences, 2006. http://epsilon.slu.se/200620.pdf.

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20

Keuter, Sabine [Verfasser], and Eva [Akademischer Betreuer] Spieck. "Characterization of nitrifying bacteria in marine recirculation aquaculture systems with regard to process optimization / Sabine Keuter. Betreuer: Eva Spieck." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2012. http://d-nb.info/1022196472/34.

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21

Correa, Camila Zoe. "Reator de leito estruturado com recirculação submetido à aeração intermitente no tratamento de esgoto sanitário." Universidade Tecnológica Federal do Paraná, 2015. http://repositorio.utfpr.edu.br/jspui/handle/1/1680.

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O lançamento de compostos nitrogenados em corpos d’água pode resultar em problemas ambientais, sendo assim tratar águas residuárias, como o esgoto sanitário com o objetivo de remover não apenas matéria orgânica, mas tambémnitrogênio tem sido objeto de estudo há algumas décadas. O objetivo deste trabalho foi avaliar o desempenho de um reator de leito estruturado e fluxo contínuo, com recirculação, na remoção de matéria orgânica e nitrogênio presente em esgoto sanitário, sob diferentes ciclos de Aeração intermitente (AI) e avaliar a influência destes ciclos no desenvolvimento de bactérias nitrif

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22

Posso-Blandon, Lina. "Stimulation of nitrification by carbon dioxide in lab-scale activated sludge reactors." [Tampa, Fla.] : University of South Florida, 2005. http://purl.fcla.edu/fcla/etd/SFE0001285.

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23

Zhan, Weixi. "The fate of dosed copper to inhibit nitrification in chloraminated water distribution system." Thesis, Curtin University, 2007. http://hdl.handle.net/20.500.11937/1359.

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Chloramine as a secondary disinfectant has been widely used by many water utilities around the world especially in a distribution system requiring a longer retention time such as the 600km long Goldfield water distribution system of Western Australia. Chloramine is selected mainly due to its better stability and low by-products over other disinfectants. However, it is reported that under nitrifying conditions, chloramine residual could drop dramatically. Consequently the required disinfectant concentration can not be maintained. Nitrification, microbial process, is known to be causing rapid de

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24

Huang, Ying-Sheng. "Evidence for Multiple Functions of a Medicago Truncatula Transporter." Thesis, University of North Texas, 2014. https://digital.library.unt.edu/ark:/67531/metadc699903/.

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Legumes play an important role in agriculture as major food sources for humans and as feed for animals. Bioavailable nitrogen is a limiting nutrient for crop growth. Legumes are important because they can form a symbiotic relationship with soil bacteria called rhizobia that results in nitrogen-fixing root nodules. In this symbiosis, rhizobia provide nitrogen to the legumes and the legumes provide carbon sources to the rhizobia. The Medicago truncatula NPF1.7/NIP/LATD gene is essential for root nodule development and also for proper development of root architecture. Work in our lab on the MtNPF

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25

Scudeletti, Daniele 1990. "Modos de inoculação de azospirillum brasilense em cana-de-açúcar /." Botucatu, 2016. http://hdl.handle.net/11449/146731.

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Orientador: Carlos Alexandre Costa Crusciol<br>Coorientador: Marcelo de Almeida Silva<br>Banca: Gabriela Ferraz Siqueira<br>Banca: Eduardo Negrisoli<br>Resumo: A cana-de-açúcar (Saccharum spp.) é uma cultura de grande importância econômica para o Brasil, pois além de gerar empregos em setores como agrícola, industriais e terceiros, a cultura também proporciona a produção de biomassa energética. Há muitas evidências de que esta cultura seja beneficiada pela interação com bactérias diazotróficas, principalmente as do gênero Azospirillum que, além da fixação de N atmosférico podem produzir fitorm

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Al-Hadhrami, Mohamed N. (Mohamed Nasser). "Degradation of Phenolic Acids by Azotobacter Species Isolated from Sorghum Fields." Thesis, University of North Texas, 1989. https://digital.library.unt.edu/ark:/67531/metadc501189/.

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Sorghum plants excrete phenolic acids which reduce subsequent crop yields. These acids accumulate in field soil by combining with soil and clay particles to form stable complexes which remain until degraded by bacterial metabolism. The amount of phenolic acids in soil samples were obtained by gas chromatography measurements, while Azotobacter populations were obtained by plate counts in 40 sorghum field samples from Denton County, Texas. One can conclude that increasing the Azotobacter population in the soil increased the degradation rate of phenolic acids proportionally. It is proposed that s

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27

Chauret, Christian. "Effect of tungsten on nitrate and nitrite reductases in Azospirillum brasilense SP 7." Thesis, McGill University, 1990. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=59635.

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Azospirillum brasilense reduced nitrate in W-containing Mo-limited medium, but at lower rates than in W-free medium. However nitrate reduction by Paracoccus denitrificans was completely suppressed under the same conditions. Nitrite reductase activity of growing A. brasilense was negatively affected by tungstate. Nitrite accumulation was shown to be the result of an inhibitory effect of nitrate on nitrite reductase activity. Both resting whole cell and cell-free extract preformed nitrite reductase activities were equally affected by increasing levels of tungstate. Preformed nitrate reductase ac

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28

Miller, Jerry Lee 1960. "Desorption and biodegradation experiments: 1) Effect of application solvents on nitrifying bacteria, 2) Effect of surfactants on release and biodegradation of strongly bound soil residues of atrazine and naphthalene." Diss., The University of Arizona, 1997. http://hdl.handle.net/10150/565576.

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29

Giracca, Ecila Maria Nunes. "Efeito do calcário em atributos biológicos do solo." Universidade Federal de Santa Maria, 2005. http://repositorio.ufsm.br/handle/1/5460.

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The soil is a complex system composed by live organisms, organic matter, gases, water and minerals parts that interact. In this sense, the soil organisms, besides inhabitants, are part of its composition. In the soil, the agricultural activity normally begin in a natural area, with several species of plants and animals living in equilibrium, may pass to a reduction of biodiversity, in function of agricultural practices. The present study was carried out in phases, aiming to evaluate and characterize the faunal composition, the population of nitrifying bacteria, and to develop a protocol to ex

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30

Pauletti, Carla Maria. "Avaliação de bactérias nitrificantes em lodos ativados de quatro estações de tratamento de diferentes efluentes industriais." reponame:Repositório Institucional da UCS, 2016. https://repositorio.ucs.br/handle/11338/1387.

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Os sistemas de lodos ativados se destacam pelo fato de oferecerem a possibilidade de remoção satisfatória de nutrientes como nitrogênio e fósforo, com poucos requisitos de área. Para aperfeiçoar esse processo de remoção, o sistema pode ser otimizado a fim de alcançar satisfatórias condições de pH, temperatura, aeração, entre outros. As bactérias presentes no lodo ativado são capazes de transformar e remover o nitrogênio através dos processos de nitrificação e desnitrificação. As reações de nitrificação são catalisadas por diferentes gêneros de bactérias autotróficas, entres os quais Nitrosomo

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31

Charoenpong, Chawalit(Chawalit Net). "The production and fate of nitrogen species in deep-sea hydrothermal environments." Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/122322.

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Thesis: Ph. D., Joint Program in Oceanography/Applied Ocean Science and Engineering (Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences; and the Woods Hole Oceanographic Institution), 2019<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references.<br>Nitrogen (N) species in hydrothermal vent fluids serve as both a nutrient and energy source for the chemosynthetic ecosystems surrounding deep-sea vents. While numerous pathways have been identified in which N-species can be produced and consumed in the context of submarine hydroth

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32

Bäckman, Jenny. "Nitrification and nitrifying bacterial communities in coniferous forest soils : effects of liming and clear-cutting /." Linköping : Univ, 2003. http://www.bibl.liu.se/liupubl/disp/disp2002/tek809s.pdf.

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33

Ruiz, Rueda Olaya. "Nitrifying and denitrifying bacterial communities in the sediment and rhizosphere of a free water surface constructed wetland." Doctoral thesis, Universitat de Girona, 2008. http://hdl.handle.net/10803/7871.

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La contínua descàrrega de nutrients, sobretot fosfats i nitrogen, és la major causa d'eutrofització dels ecosistemes aquàtics. Els sistemes de tractament basats en aiguamolls construïts s'han emprat per reduir ells nivells de nitrogen a l'aigua com a alternativa de baix cost als mètodes de depuració convencionals. L'eliminació del nitrogen a aquests sistemes depèn en bona part de la vegetació, i l'alternança de condicions aeròbiques i anaeròbiques per promoure els processos de nitrificació i desnitrificació. En aquest treball hem volgut investigar les activitats microbianes de nitrificació i

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34

Chang, Yu-Feng, and 張鈺鋒. "Cometabolism Dechlorination of trichloroenthene by Nitrifying Bacteria." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/74242944971561910057.

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碩士<br>國立中山大學<br>環境工程與科學系<br>85<br>Pure culture of ammonia-oxidizing bacteria (Nitrosomonas europaea) has been found to be capable of degrading trichloroethylene (TCE) through the cometabolism with ammonia by ammonia monooxygenase (AMO) existing on the membrane of the bacteria. However, no further work has been studied on this enzymatic cometabolism by using enriched or mixed cultures. Hence, the purposes of this study is to investigate the cometabolic biodegradability of TCE by using an enriched nitrifying culture initially sampled from a human body waste treatment plant. 　　The tests were ru

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Kundu, Balaram. "Biochemical and bioenergetic aspects of denitrification in `Rhodopseudomonas sphaeroides` forma sp. `denitrificans`." 1986. http://web4.library.adelaide.edu.au/theses/09PH/09phk968.pdf.

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Buda, Anthony R. "Tracing stream nitrate in a Central Pennsylvania mixed land-use basin using stable isotopes, bacteria, and inorganic chemicals." 2007. http://etda.libraries.psu.edu/theses/approved/WorldWideIndex/ETD-2176/index.html.

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Song, Weining 1958. "Some aspects of the utilization of inorganic nitrogen compounds and carbon compounds by "Nitrobacter hamburgensis"." 1987. http://web4.library.adelaide.edu.au/theses/09A/09as724.pdf.

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Lee, Yung-Wen, and 李永文. "Isolation and Phylogenetic Analysis of Nitrifying Bacteria for Aerobic Composting." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/99738770060793039868.

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碩士<br>國立中興大學<br>獸醫微生物學研究所<br>91<br>This study aimed to isolate nitrifying bacteria for aerobic composting and to determine their phylogenetic relationship. The mass amount of ammonia produced during aerobic composting is converted into nitrite or nitrate mainly by aerobic nitrifying bacteria. Using the ammonia sulfate enrichment medium, we obtained nine isolates of ammonia-oxidizing bacteria from compost samples. Among these isolates, five isolates, designated as A3, A21, A24, A31 and A34 were Gram negative bacteria. Four isolates, including B2, B21, B22 and B23 were Gram postive bacteria. Bas

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Duddleston, Khrystyne Noel. "Properties of methyl bromide cooxidation by ammonia-oxidizing bacteria." Thesis, 1998. http://hdl.handle.net/1957/33568.

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40

Ely, Roger L. "Effects of substrate interactions, toxicity, and bacterial response during cometabolism of chlorinted solvents by nitrifying bacteria." Thesis, 1996. http://hdl.handle.net/1957/34644.

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黃惠貞. "STUDY FOR THE DETECTION METHOD OF NITRIFYING AND DENITRIFYING BACTERIA BY PCR." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/18547186074723306605.

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碩士<br>大同大學<br>生物工程研究所<br>90<br>For health and environmental protection, municipal and industrial wastewaters have to be treated. Wastewater with ammonia-nitrogen, generally treated with mixed microbial populations, is produced by domestic wastewater, and wastewater from livestock and manufacture about food, ABS plastic, petroleum, and semiconductor at a large amount. The directly determination of the growths and distributions of relative bacteria are less or unsuccessful because of its complexity of populations in activated sludge. Due to the improvement of technology for molecular biology,

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Yuan, Shi-Lung, and 袁熙隆. "Nitrification Performance and Microbial Ecology of Nitrifying Bacteria in Swine and Municipal WWTP." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/93992258125953540890.

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碩士<br>國立成功大學<br>環境工程學系碩博士班<br>94<br>This study evaluate microbial ecology and performance of nitrification of active sludge in different municipal and swine waste water treatment plant. Besides of traditional method to investigate characteristic of waste water, performance of nitrification and dynamic nitrification experiment of active sludge, this study used molecular biology techniques - terminal restriction fragment length polymorphism(T-RFLP) to investigate population transfer of ammonia oxydizing bacteria(AOB) and nitrite oxydizing bacteria (NOB). The subjec this syudy investigate conta

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Ramdhani, Nishani. "Detection and quantification of nitrifying bacteria from South African biological nutrient removal plants." Thesis, 2013. http://hdl.handle.net/10321/874.

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Submitted in fulfillment for the requirements for the Degree of Doctor of Technology: Biotechnology, Durban University of Technology, 2012.<br>Nitrification is a crucial step in biological nutrient removal (BNR) processes, mostly carried out by a group of nitrifying bacteria which includes ammonia-oxidising bacteria (AOB) and nitrite-oxidising bacteria (NOB). Nitrification failure has proven to be a common operational problem in full-scale wastewater treatment plants (WWTP) since nitrifying bacteria are very sensitive to sudden changes in environmental or plant operating conditions. The cu

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Chang, Yoa Chuan, and 張耀泉. "The Study of Nitrifying Bacteria Immobilized in Immobilized Resin Pellets Add-in A2/O process." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/45560240578608191713.

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碩士<br>國立中央大學<br>環境工程研究所<br>82<br>A2/O法添加固定化硝化菌擔體併同去除碳、氮、磷之處理程序乃將傳統厭氧-缺氧-好氧活性污泥法( A2/O Process，Anaerobic-Anoxic-Oxide Activated Sludge Process )加以改良，在好氧段加入從日本引進的硝化菌擔體，成為固定化硝化菌擔體及活性污泥法併用之程序，以改進傳統 A2/O法的缺點。本研究利用實驗室模廠進行連續操作試驗，以模擬都市污水之人工合成基質為處理對象，控制進流水濃度為TBOD5 210mg/L、TCOD 300mg/L、氨氮 20mg/L、有機氮 20mg/L、總磷 5~5.5mg/L，變動總水力停留時間 (10， 8，6小時 )、污泥迴流率( 0.5 )、混合液循環率(1，2 ，3，4)進行實驗。並從各水力停留時間選取一組組作對照的無擔體空白試驗，共15組試程。評估其脫氮及除磷效果及最適操作參數，藉以瞭解其處理特性。本處理程序對於有機碳的去除效果

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Ke, Shih-Ghieh, and 柯世傑. "Using molecular biology method to calculate the numbers of nitrifying bacteria and their nitrification rates in different samples." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/88065183515489328945.

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碩士<br>東吳大學<br>微生物學系<br>93<br>Nitrification is one of the most important step is the nitrogen cycle, this series of reactions are responsible for chemoautotrophic nitrobacteria, therefore the chemoautotrophic nitrobacteria play an important role in nitrogen cycle. Nitrobacteria grow in a slow rate, and during their growth, they produce some acidic and toxic metabolites and that will inhibit their growth too. Because of the slow growth rate, that increases the contaminant opportunity by other micro organisms, for these reason it risen the difficulty of culturing and purifying the nitrobacteria,

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Daims, Holger [Verfasser]. "Population structure and functional analyses by in situ techniques of nitrifying bacteria in wastewater treatment plants / Holger Daims." 2001. http://d-nb.info/963771582/34.

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Tsai-Chien, Chen, and 蔡建成. "Kinetics of Nitrification/Denitrification in Single-Sludge Reactor System(Involving Distributed Fractions of Nitrifying Bacteria and Denitrifying Reductases)." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/23542471492228297297.

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碩士<br>國立成功大學<br>環境工程學系<br>89<br>A nitrification-denitrification kinetic model of a single-sludge reactor system (an anoxic denitrification reactor followed by an aerobic nitrification reactor), accounting for the distributed fractions of Nitrosomonas, Nitrobacter, nitrate-reductase and nitrite-reductase, was proposed. By using sludge taken from each bioreactor of the steady-state single-sludge reactor system, independent batch experiments were also performed to estimate the distributed fractions of nitrifying bacteria and denitrifying reductases. When treating nitrogen-containing wa

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Thomas, William J. "Identification and characterization of type III effector proteins in plant-associated bacteria." Thesis, 2012. http://hdl.handle.net/1957/29206.

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Symbioses between microbes and multicellular eukaryotes are found in all biomes, and encompass a spectrum of symbiotic lifestyles that includes parasitism and disease, commensalism, and mutually beneficial interdependent host-microbe relationships. Regardless of outcome, these symbiotic lifestyles are governed by a complex molecular "courtship" between microbe and potential host. This courtship is the primary determinant of the host range of a given microsymbiont. Host immunity poses a formidable barrier to the establishment of host-microbe relationships, and the majority of microbial suito

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Mintie, Ann. "Community profiles of ammonia oxidizers across high-elevation forest-to-meadow transects." Thesis, 2002. http://hdl.handle.net/1957/28834.

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In recent years considerable interest has been shown in the diversity of ammonia-oxidizing bacteria in soil communities. The majority of the research has been carried out in Northern Europe where soils have received high atmospheric inputs of nitrogen over the past two centuries. In contrast, although much work has been conducted on nitrogen cycling processes in nitrogen limited forest ecosystems in western North America, no studies have examined the characteristics of ammonia-oxidizing communities in those environments. I was interested in measuring nitrification potential along a high-elevat

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Awolusi, Oluyemi Olatunji. "Evaluation of seasonal impacts on nitrifiers and nitrification performance of a full-scale activated sludge system." Thesis, 2016. http://hdl.handle.net/10321/1722.

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Submitted in complete fulfillment for the degree of Doctor of Philosophy (Biotechnology), Durban University of Technology, Durban, South Africa, 2016.<br>Seasonal nitrification breakdown is a major problem in wastewater treatment plants which makes it difficult for the plant operators to meet discharge limits. The present study focused on understanding the seasonal impact of environmental and operational parameters on nitrifiers and nitrification, in a biological nutrient removal wastewater treatment works situated in the midlands of KwaZulu Natal. Composite sludge samples (from the aerati

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