Готові списки джерел за темами / Bacterias anammox

Зміст

  1. Статті в журналах
  2. Дисертації
  3. Книги
  4. Частини книг
  5. Тези доповідей конференцій

Добірка наукової літератури з теми "Bacterias anammox"

Автор: Grafiati
Опубліковано: 4 червня 2021
Оновлено: 11 лютого 2022

Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями

Оберіть тип джерела:

Ознайомтеся зі списками актуальних статей, книг, дисертацій, тез та інших наукових джерел на тему "Bacterias anammox".

Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.

Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.

Статті в журналах з теми "Bacterias anammox"

1

Tan, Feng Xun, Min Huang, Dao Ji Wu, and Zhao Liang Zhu. "Research Progress on the Anammox Technology." Advanced Materials Research 347-353 (October 2011): 2015–20. http://dx.doi.org/10.4028/www.scientific.net/amr.347-353.2015.

Повний текст джерела
Анотація:
With the continuing phenomenon of eutrophication, the pollution of nitrogen has caused wide concern. Lack of organic carbon sources is always considered to be a key problem for nitrogen removal efficiency and cost when conventional biological nitrogen removal process was used to the treatment of ammonium-rich wastewater, but the anaerobic ammonium oxidation（ANAMMOX）can solve this problem .Anammox has so many advantages that it has good prospects in the biological nitrogen removal in wastewater. Anammox bacteria grows slowly, has a long generation time, and is susceptible to the environmental conditions. DO, Temperature, pH and organic can impact the process of anammox, so it is necessary to take careful methods to cultivate Anammox biomass. Depending on the purpose of improve water quality, appropriate treatment reactors and seed sludge should be selected to start ANAMMON process. The discovery of anaerobic ammonia oxidation, the reaction mechanism, influence application, the enrichment of anammox bacteria, physiological and biochemical characteristics of anammox bacteria, the start of anaerobic ammonia oxidation are reviewed in this paper.
Стилі APA, Harvard, Vancouver, ISO та ін.
2

Shen, Li-dong, Shuai Liu, Li-ping Lou, Wei-ping Liu, Xiang-yang Xu, Ping Zheng, and Bao-lan Hu. "Broad Distribution of Diverse Anaerobic Ammonium-Oxidizing Bacteria in Chinese Agricultural Soils." Applied and Environmental Microbiology 79, no. 19 (June 7, 2013): 6167–72. http://dx.doi.org/10.1128/aem.00884-13.

Повний текст джерела
Анотація:
ABSTRACTAnaerobic ammonium-oxidizing (anammox) bacteria have been detected in many marine and freshwater ecosystems. However, little is known about the distribution, diversity, and abundance of anammox bacteria in terrestrial ecosystems. In this study, anammox bacteria were found to be present in various agricultural soils collected from 32 different locations in China. Phylogenetic analysis of the 16S rRNA genes showed “CandidatusBrocadia,” “CandidatusKuenenia,” “CandidatusAnammoxoglobus,” and “CandidatusJettenia” in the collected soils, with “CandidatusBrocadia” being the dominant genus. Quantitative PCR showed that the abundance of anammox bacteria ranged from 6.38 × 104± 0.42 × 104to 3.69 × 106± 0.25 × 106copies per gram of dry weight. Different levels of diversity, composition, and abundance of the anammox bacterial communities were observed, and redundancy analysis indicated that the soil organic content and the distribution of anammox communities were correlated in the soils examined. Furthermore, Pearson correlation analysis showed that the diversity of the anammox bacteria was positively correlated with the soil ammonium content and the organic content, while the anammox bacterial abundance was positively correlated with the soil ammonium content. These results demonstrate the broad distribution of diverse anammox bacteria and its correlation with the soil environmental conditions within an extensive range of Chinese agricultural soils.
Стилі APA, Harvard, Vancouver, ISO та ін.
3

Liu, Xing-Guo, Jie Wang, Zong-Fan Wu, Guo-Feng Cheng, and Zhao-Jun Gu. "Anaerobic Ammonium Oxidation Bacteria in a Freshwater Recirculating Pond Aquaculture System." International Journal of Environmental Research and Public Health 18, no. 9 (May 6, 2021): 4941. http://dx.doi.org/10.3390/ijerph18094941.

Повний текст джерела
Анотація:
Anaerobic ammonium oxidation (anammox) is a key biochemical process to reduce nitrogen pollution in aquaculture, especially in water recirculating pond aquaculture system (RPAS). We used 16S RNA and quantified PCR to study the distribution and environmental impacts of anammox bacteria in RPAS. The results show that the anammox bacterial community distributions and diversities that are apparently unit-specific and seasonal have significant (p < 0.05) difference variation in the RPAS. Most of the anaerobic ammonium oxidation bacteria sequences (77.72%) retrieved from the RPAS belong to the Brocadia cluster. The abundance of anammox bacterial in the RPAS ranged from 3.33 × 101 to 41.84 × 101 copies per ng of DNA. The environmental parameter of temperature and nitrogen composition in water could have impacted the anammox bacterial abundance. This study provides more information on our understanding of the anammox bacteria in the RPAS, and provides an important basis for RPAS improvement and regulation.
Стилі APA, Harvard, Vancouver, ISO та ін.
4

Dang, Hongyue, Ruipeng Chen, Lin Wang, Lizhong Guo, Pingping Chen, Zuwang Tang, Fang Tian, Shaozheng Li, and Martin G. Klotz. "Environmental Factors Shape Sediment Anammox Bacterial Communities in Hypernutrified Jiaozhou Bay, China." Applied and Environmental Microbiology 76, no. 21 (September 10, 2010): 7036–47. http://dx.doi.org/10.1128/aem.01264-10.

Повний текст джерела
Анотація:
ABSTRACT Bacterial anaerobic ammonium oxidation (anammox) is an important process in the marine nitrogen cycle. Because ongoing eutrophication of coastal bays contributes significantly to the formation of low-oxygen zones, monitoring of the anammox bacterial community offers a unique opportunity for assessment of anthropogenic perturbations in these environments. The current study used targeting of 16S rRNA and hzo genes to characterize the composition and structure of the anammox bacterial community in the sediments of the eutrophic Jiaozhou Bay, thereby unraveling their diversity, abundance, and distribution. Abundance and distribution of hzo genes revealed a greater taxonomic diversity in Jiaozhou Bay, including several novel clades of anammox bacteria. In contrast, the targeting of 16S rRNA genes verified the presence of only “Candidatus Scalindua,” albeit with a high microdiversity. The genus “Ca. Scalindua” comprised the apparent majority of active sediment anammox bacteria. Multivariate statistical analyses indicated a heterogeneous distribution of the anammox bacterial assemblages in Jiaozhou Bay. Of all environmental parameters investigated, sediment organic C/organic N (OrgC/OrgN), nitrite concentration, and sediment median grain size were found to impact the composition, structure, and distribution of the sediment anammox bacterial community. Analysis of Pearson correlations between environmental factors and abundance of 16S rRNA and hzo genes as determined by fluorescent real-time PCR suggests that the local nitrite concentration is the key regulator of the abundance of anammox bacteria in Jiaozhou Bay sediments.
Стилі APA, Harvard, Vancouver, ISO та ін.
5

Tal, Yossi, Joy E. M. Watts, and Harold J. Schreier. "Anaerobic Ammonia-Oxidizing Bacteria and Related Activity in Baltimore Inner Harbor Sediment." Applied and Environmental Microbiology 71, no. 4 (April 2005): 1816–21. http://dx.doi.org/10.1128/aem.71.4.1816-1821.2005.

Повний текст джерела
Анотація:
ABSTRACT The discovery of bacteria capable of anaerobic ammonia oxidation (anammox) has generated interest in understanding the activity, diversity, and distribution of these bacteria in the environment. In this study anammox activity in sediment samples obtained from the Inner Harbor of Baltimore, Md., was detected by 15N tracer assays. Anammox-specific oligonucleotide primer sets were used to screen a Planctomycetales-specific 16S rRNA gene library generated from sediment DNA preparations, and four new anammox bacterial sequences were identified. Three of these sequences form a cohesive new branch of the anammox group, and the fourth sequence branches separately from this group. Denaturing gradient gel electrophoresis analysis of sediment incubated with anammox-specific media confirmed the presence of the four anammox-related 16S rRNA gene sequences. Evidence for the presence of anammox bacteria in Inner Harbor sediment was also obtained by using an anammox-specific probe in fluorescence in situ hybridization studies. To our knowledge, this is the first report of anammox activity and related bacterial 16S rRNA gene sequences from the Chesapeake Bay basin area, and the results suggest that this pathway plays an important role in the nitrogen cycle of this estuarine environment. Furthermore, the presence of these bacteria and their activity in sediment strengthen the contention that anammox-related Plactomycetales are globally distributed.
Стилі APA, Harvard, Vancouver, ISO та ін.
6

Gonzalez-Martinez, Alejandro, Alejandro Rodriguez-Sanchez, Belén Rodelas, Ben A. Abbas, Maria Victoria Martinez-Toledo, Mark C. M. van Loosdrecht, F. Osorio, and Jesus Gonzalez-Lopez. "454-Pyrosequencing Analysis of Bacterial Communities from Autotrophic Nitrogen Removal Bioreactors Utilizing Universal Primers: Effect of Annealing Temperature." BioMed Research International 2015 (2015): 1–12. http://dx.doi.org/10.1155/2015/892013.

Повний текст джерела
Анотація:
Identification of anaerobic ammonium oxidizing (anammox) bacteria by molecular tools aimed at the evaluation of bacterial diversity in autotrophic nitrogen removal systems is limited by the difficulty to design universal primers for theBacteriadomain able to amplify the anammox 16S rRNA genes. A metagenomic analysis (pyrosequencing) of total bacterial diversity including anammox population in five autotrophic nitrogen removal technologies, two bench-scale models (MBR and Low Temperature CANON) and three full-scale bioreactors (anammox, CANON, and DEMON), was successfully carried out by optimization of primer selection and PCR conditions (annealing temperature). The universal primer 530F was identified as the best candidate for total bacteria and anammox bacteria diversity coverage. Salt-adjusted optimum annealing temperature of primer 530F was calculated (47°C) and hence a range of annealing temperatures of 44–49°C was tested. Pyrosequencing data showed that annealing temperature of 45°C yielded the best results in terms of species richness and diversity for all bioreactors analyzed.
Стилі APA, Harvard, Vancouver, ISO та ін.
7

Kindaichi, Tomonori, Shota Yuri, Noriatsu Ozaki, and Akiyoshi Ohashi. "Ecophysiological role and function of uncultured Chloroflexi in an anammox reactor." Water Science and Technology 66, no. 12 (December 1, 2012): 2556–61. http://dx.doi.org/10.2166/wst.2012.479.

Повний текст джерела
Анотація:
The coexistence of uncultured heterotrophic bacteria belonging to the phylum Chloroflexi has often been observed in anaerobic ammonium oxidation (anammox) reactors fed with synthetic nutrient medium without organic carbon compounds. To determine if coexisting Chloroflexi in anammox reactors scavenge organic matter derived from anammox bacterial cells, the present study was conducted to investigate the substrate uptake pattern of the uncultured Chloroflexi present in an anammox reactor and to clarify if they take up microbial products derived from anammox bacterial cells. To accomplish this, combined microautoradiography and fluorescence in situ hybridization (MAR–FISH) was conducted. Phylogenetic analysis revealed that 36% of the clones analyzed in this study were affiliated with Chloroflexi. The sequence similarities to Anaerolinea thermophila and Caldilinea aerophila within the phylum Chloroflexi were only 81.0–88.7% and 80.3–83.8%, respectively. The uncultured Chloroflexi were found to incorporate sucrose, glucose, and N-acetyl-glucosamine. The 14C-tracing experiment revealed that the uncultured Chloroflexi were clearly MAR-positive, indicating the utilization of decaying anammox bacterial cell materials. Taken together, these results indicate that coexisting uncultured Chloroflexi in anammox reactors scavenge organic compounds derived from anammox bacterial cells.
Стилі APA, Harvard, Vancouver, ISO та ін.
8

Zeng, Taotao, Dong Li, Wei Liao, Wenxin Qiu, and Jie Zhang. "Nitrogen removal and functional bacteria distribution of ANAMMOX at ambient temperature." Journal of Water Reuse and Desalination 6, no. 4 (January 27, 2016): 476–83. http://dx.doi.org/10.2166/wrd.2016.197.

Повний текст джерела
Анотація:
In this study, an up-flow anaerobic biofilter (AF) was operated to investigate the efficiency of anaerobic ammonium oxidation (ANAMMOX) in treating low strength ammonia (46.5 mg/L) at ambient temperatures (20.3–23.2 °C). Microbial compositions and functional populations of the upper (140–190 cm), middle (40–140 cm), and lower (0–40 cm) parts of the biofilter were monitored using scanning electron microscopy, denaturing gradient gel electrophoresis (DGGE), clone and sequence. The results show that stable biofilter performance was achieved with an average nitrogen removal rate of 2.26 kg/(m3·d) and a total nitrogen removal efficiency of 75.9%. Approximately 67% of the ammonia and nitrite disappeared in the middle part of the biofilter. The spherical bacteria, similar to ANAMMOX bacteria, dominated the middle part of the biofilter. There were eight bacterial DGGE bands; clone and sequence results showed that they included Oxalicibacterium sp., Ignavibacterium album, Bacterium rJ15, Candidatus Kuenenia stuttgartiensis, Hippea maritima, Thioprofundum lithotrophica, and Rhodopseudomonas palustris. The genus of ANAMMOX bacterium remaining at constant levels in different parts of the biofilter was identified as Candidatus Kuenenia stuttgartiensis. The AF bioreactor maintained high activity due to the ANAMMOX bacteria's ability to adapt to ambient temperature and low matrix influent conditions.
Стилі APA, Harvard, Vancouver, ISO та ін.
9

Bae, H., Y. C. Chung, and J. Y. Jung. "Microbial community structure and occurrence of diverse autotrophic ammonium oxidizing microorganisms in the anammox process." Water Science and Technology 61, no. 11 (June 1, 2010): 2723–32. http://dx.doi.org/10.2166/wst.2010.075.

Повний текст джерела
Анотація:
The enrichment of anaerobic ammonium oxidizing (anammox) bacteria using an upflow anaerobic sludge bioreactor was successfully conducted for 400 days of continuous operation. The bacterial community structure of anammox bioreactor included Proteobacteria (42%), Chloroflexi (22%), Planctomycetes (20%), Chlorobi (7%), Bacteroidetes (5%), Acidobacteria (2%), and Actinobacteria (2%). All clones of Planctomycetes were affiliated with the anammox bacteria, Planctomycete KSU-1 (AB057453). The presence and diversity of ammonia oxidizing bacteria (AOB) and archaea (AOA) were identified by terminal restriction fragment length polymorphism (T-RFLP) based on the amoA gene sequences. The AOB in anammox bioreactor were affiliated with the Nitrosomonas europaea cluster. The T-RFLP result of AOA showed the diverse microbial community structure of AOA with three terminal restriction fragments (T-RFs).
Стилі APA, Harvard, Vancouver, ISO та ін.
10

Mac Conell, E. F. A., P. G. S. Almeida, K. E. L. Martins, J. C. Araújo, and C. A. L. Chernicharo. "Bacterial community involved in the nitrogen cycle in a down-flow sponge-based trickling filter treating UASB effluent." Water Science and Technology 72, no. 1 (April 29, 2015): 116–22. http://dx.doi.org/10.2166/wst.2015.154.

Повний текст джерела
Анотація:
Abstract The bacterial community composition of a down-flow sponge-based trickling filter treating upflow anaerobic sludge blanket (UASB) effluent was investigated by pyrosequencing. Bacterial community composition considerably changed along the reactor and over the operational period. The dominant phyla detected were Proteobacteria, Verrucomicrobia, and Planctomycetes. The abundance of denitrifiers decreased from the top to the bottom and it was consistent with the organic matter concentration gradients. At lower loadings (organic and nitrogen loading rates), the abundance of anammox bacteria was higher than that of the ammonium-oxidizing bacteria in the upper portion of the reactor, suggesting that aerobic and anaerobic ammonium oxidation occurred. Nitrification occurred in all the compartments, while anammox bacteria prominently appeared even in the presence of high organic carbon to ammonia ratios (around 1.0–2.0 gCOD gN−1). The results suggest that denitrifiers, nitrifiers, and anammox bacteria coexisted in the reactor; thus, different metabolic pathways were involved in ammonium removal in the post-UASB reactor sponge-based.
Стилі APA, Harvard, Vancouver, ISO та ін.
Більше джерел

Дисертації з теми "Bacterias anammox"

1

Viancelli, Aline. "Caracterização e análise filogenética de ANAMMOX." reponame:Repositório Institucional da UFSC, 2012. http://repositorio.ufsc.br/xmlui/handle/123456789/93355.

Повний текст джерела
Анотація:
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Biológicas, Programa de Pós-graduação em Ecologia, Florianópolis, 2009
Made available in DSpace on 2012-10-24T20:57:14Z (GMT). No. of bitstreams: 1 276208.pdf: 1155606 bytes, checksum: 02db951a03ba6e8a6371b3e60baa9e4f (MD5)
O presente estudo teve como objetivo caracterizar e analisar filogeneticamente bactérias anaeróbias oxidadoras de amônio (ANAMMOX) coletadas de bioreator de bancada de fluxo ascendente inoculado com lodo aclimatado proveniente de lagoa anaeróbia de um sistema de Lagoas de Tratamento de Dejetos de Suínos e padronizar técnica de Reação em Cadeia da Polimerase (PCR) objetivando amplificação de uma região de 436 pares de base (pb) correspondente a subunidade menor (16S rRNA) do ribossomo de bactérias ANAMMOX. Visando a identificação dos organismos presentes no bioreator, foram utilizadas as técnicas de PCR, clonagem e sequenciamento da região 16S rRNA e dos fragmentos de 436 pb amplificados. Os iniciadores desenvolvidos foram avaliados quanto sua especificidade e limite de detecção. Foram obtidos 29 clones, dos quais 17 carregavam o gene 16S rRNA e 12 carregavam o fragmento de 436 pb. Entre os 17 clones obtidos, três apresentaram 97% de identidade com ANAMMOX Candidatus Jettenia asiática e Planctomycete KSU-1, 12 tiveram identidade com Janthinobacterium (99%) e dois apresentaram similaridade com clones não cultivados. Dos clones carregando o fragmento de 436 pb, oito apresentaram 96-100% de semelhança com ANAMMOX Candidatus Anammoxoglobus propionicus, Planctomycete KSU-1 e Candidatus Jettenia asiatica. Um clone teve 99% de similaridade com Pseudomonas sp. e outros três clones apresentaram semelhança com clones não cultivados. Embora os iniciadores tenham amplificado fragmentos genômicos de organismos não-ANAMMOX, o teste de limite de detecção mostrou que com a PCR foi possível amplificar a região alvo usando concentrações extremamente baixas (0,3 ng) de material genético. A utilização de tais ferramentas (extração de material genômico e execução de PCR com os novos iniciadores aqui desenvolvidos) mostrou-se eficiente, econômica e de fácil execução para caracterização de organismos ANAMMOX, abrindo uma gama de oportunidades para ampliar nosso conhecimento sobre estas bactérias e consequentemente melhorar o tratamento de dejeto de suíno.
Стилі APA, Harvard, Vancouver, ISO та ін.
2

Kassotaki, Elissavet. "Elimination of micropollutants in conventional and novel nitrogen removal processes. A comparative assessment of diverse microbial communities capabilities." Doctoral thesis, Universitat de Girona, 2018. http://hdl.handle.net/10803/664342.

Повний текст джерела
Анотація:
Pharmaceutically active compounds (PhACs) and endocrine disrupting compounds (EDCs) can pose a significant risk to the environment and human health, undermining prosperity. Current wastewater treatment plants (WWTPs) cannot efficiently act as barriers to their release and have been identified as main points of discharge and contamination. The present thesis aimed to investigate the fate of five PhACs (ibuprofen, sulfamethoxazole, metoprolol, carbamazepine and venlafaxine) and five EDCs (estrone, 17β-estradiol, estriol, 17α-ethinylestradiol and bisphenol A) in different systems simulating wastewater treatment scenarios and to identify factors triggering their elimination. A comparative assessment was carried out to determine the contribution of the microbial groups (either autotrophic or heterotrophic) present in different lab, pilot and full-scale treatment systems performing different processes in the removal of the selected compounds. The results indicated that the overall efficiency of wastewater treatment systems can be broadened by combining different aerobic and anaerobic conditions and different types of biomass
Els compostos farmacèuticament actius (PhACs) i els pertorbadors endocrins(EDC) poden suposar un risc considerable per al medi ambient i la salut humana. Les estacions depuradores d'aigües residuals (EDAR) no poden actuar de manera eficient com a barreres per al seu alliberament i s'han identificat com a punts principals de descàrrega. La present tesi pretén determinar el destí de cinc PhACs (ibuprofèn, sulfametoxazol, metoprolol, carbamazepina i venlafaxina) i cinc EDCs (estrona, 17β-estradiol, estriol, 17α-etinilestradiol i bisfenol A), en sistemes que simulen escenaris de tractament d'aigües residuals, per identificar els factors claus en la seva eliminació. Es va realitzar una avaluació comparativa per determinar la contribució dels diferents grups bacterians (autòtrofs o heteròtrofs) presents en diferents sistemes a escala de laboratori, pilot i a gran escala. Els resultats indiquen que l'eficiència global dels sistemes de tractament d'aigües residuals es pot ampliar combinant diferents condicions aeròbiques i anaeròbies i tipus de biomassa
Стилі APA, Harvard, Vancouver, ISO та ін.
3

Ruscalleda, Beylier Maël. "Treatment of mature urban landfill leachates by anammox process." Doctoral thesis, Universitat de Girona, 2012. http://hdl.handle.net/10803/78031.

Повний текст джерела
Анотація:
This thesis results from the collaborative projects between the LEQUIA-UdG group and Cespa (a company in charge of several landfill sites in Spain). The aim of the work was the development of a suitable alternative treatment for nitrogen removal from mature landfill leachates. The thesis presents the application of the anammox (anaerobic ammonium oxidation process) process to treat ammonium rich leachates as the second step of the PANAMMOX® process. The work deals with preliminary studies about the characteristics of the anammox process in a SBR, with special focus on the response of the biomass to nitrite exposure. The application of the anammox process with leachate was first studied in a lab-scale reactor, to test the effect of the leachate matrix on anammox biomass and its progressive adaptation. Finally, a start-up strategy is developed and applied for the successful start-up of a 400L anammox SBR in less than 6 months.
Aquesta tesi és fruit de la col•laboració entre el grup LEQUIA-UdG i Cespa. L'objectiu del treball va ser el desenvolupament d'un tractament alternatiu per a l'eliminació biològica de nitrogen dels lixiviats madurs d'abocador. La tesi presenta l'aplicació del procés anammox (anaerobic ammonium oxidation) per tractar elevades càrregues de nitrogen en el segon pas del procés PANAMMOX ®. El treball inclou estudis preliminars sobre les característiques del procés de anammox en un SBR, amb especial atenció a la resposta de la biomassa a l'exposició de nitrit. L'aplicació del procés anammox amb lixiviat es va estudiar inicialment en un reactor a escala de laboratori, per provar l'efecte de la matriu del lixiviat sobre la biomassa anammox i la seva adaptació progressiva. Finalment, es va desenvolupar una estratègia de posada en marxa que va ser aplicada amb èxit per a la posada en marxa d'un SBR anammox de 400L en menys de 6 mesos.
Стилі APA, Harvard, Vancouver, ISO та ін.
4

Mika, Anna. "Evaluation of Nitration/Anammox process by bacterial activity tests." Thesis, KTH, Mark- och vattenteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-173853.

Повний текст джерела
Анотація:
Partial Nitritation/Anammox process (deammonification process), by which occurs oxidation of ammonium to nitrogen gas by autotrophic bacteria in anaerobic conditions, considered to be cost-effective and environmentally friendly method of nitrogen removal. Present research work focuses on achieving a high nitrogen removal degree, thanks to Anammox bacteria, while providing the best performance of the ongoing process. Integrated fixed-film activated sludge (IFAS) reactor was supplied with the main stream of the wastewater after UASB reactor, characterized by low concentration of nitrogen and organic matter. The bacteria ability to accommodate, were tested in the biofilm and in the activated sludge, depending on the different stages in which the process were being conducted. Batch test, such as Specific Anammox Activity (SAA), Nitrate Uptake Rate (NUR) and Oxygen Uptake Rate (OUR), were used for the evaluation of activity of various groups of bacteria. On the basis of laboratory analysis verified the values obtained from the batch tests. It was determined that a high degree of nitrogen removal (92% of NH4-N) was achieved thanks to the dominant activity of the Anammox bacteria, with low participation of other groups of bacteria. It was also proved, that Anammox bacteria activity were overwhelming in the biofilm. Dominant role of Ammonium Oxidizing Bacteria (AOB) was associated with high activity of Anammox bacteria, which together satisfyingly out-competed Nitrite Oxidizing Bacteria (NOB) and heterotrophic bacteria. It has been shown that Anammox bacteria quickly adapt to the new conditions and they are able to assume a dominant role, even in the case of inoculation of the reactor with the sludge from SBR. This allows conclude, that in the case of operational problems, the reactor can be supplied from another source, in order not to inhibit the process.
Стилі APA, Harvard, Vancouver, ISO та ін.
5

Han, Ping, and 韓平. "Molecular detection methods and characterization of anammox bacteria from different ecological niches." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2014. http://hdl.handle.net/10722/197075.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
6

Williams, Simon. "Microbial ecology of anammox bacteria in estuarine and oxygen minimum zone environments." Thesis, University of Warwick, 2013. http://wrap.warwick.ac.uk/61716/.

Повний текст джерела
Анотація:
Anammox (anaerobic ammonium oxidation) is an environmentally significant process with great importance for global biogeochemical cycles. This process is mediated by a unique suite of phylogenetically distinct chemolithoautotrophic bacteria which demonstrate novel physiological and metabolic characteristics. However, despite the importance of these organisms, there is still much which is poorly understood about them, specifically the diversity and distribution of these bacteria and their controlling environmental factors. Furthermore, genomic studies and observations from the field suggest that anammox bacteria may have a far greater metabolic diversity than previously thought, suggesting that the current understanding of these organisms is incomplete. This study aimed to elucidate these aspects of the ecology of anammox bacteria in estuarine and OMZ (oxygen minimum zone) environments. A clear community shift was observed in estuarine environments from Ca. Brocadia spp. dominated freshwater sites to Ca. Scalindua spp. dominated marine sites. The OMZ was dominated by Ca. Scalindua spp. though diversity within this clade was observed between organisms in the upper oxycline and those within the core of the OMZ. Microcosm experiments amended with organic substrates suggested that some anammox organisms (namely Ca. Brocadia spp., Ca. Jettenia spp. and Ca. Kuenenia spp.) may have the ability to assimilate carbon directly from organic substrates such as dimethylamine and urea. However, these data were inconclusive and further investigations are required to prove or disprove the hypothesis that anammox bacteria can utilise organic substrates. Nevertheless, this study improves the understanding of the ecology of anammox organisms in estuarine and OMZ environments, providing an unprecedented depth of data as to the diversity and distribution and unique insights into potentially novel metabolic capabilities of these organisms.
Стилі APA, Harvard, Vancouver, ISO та ін.
7

Akaboci, Tiago Rogeiro Vitor. "Operational strategies towards nitritation-anammox implementation for mainstream municipal wastewater treatment." Doctoral thesis, Universitat de Girona, 2019. http://hdl.handle.net/10803/670282.

Повний текст джерела
Анотація:
Anammox-based processes have been commonly applied for the treatment of reject water (high nitrogen content and low C:N ratio), in the sidestream line of urban wastewater tretament plants (WWTP). However, in recent years, it has increased the interest in applying anammox-based processes in the mainstream line (lower nitrogen content), which accounts for the majority of the influent nitrogen to the WWTP. But the application of autotrophic nitrogen removal by PNA has some challenges to deal, such as low anammox growth rate, mainly at low-temperature conditions, and the suppression of nitratation process. This thesis aimed at studying suitable operational strategies to deal with the challenges aforementioned, in order to achieve stable PNA at mainstream urban WWTP. The main strategies investigated were (i) extremely low dissolved oxygen (DO); (ii) effects of temperature; (iv) influence of different IC:N ratios; and (iv) different reactors configurations: sequencing batch (SBR) and plug-flow reactor
Els processos basats en la tecnologia anammox s'han aplicat habitualment per al tractament de l’aigua de retorn de centrígues (major contingut de nitrogen i baixa relació C: N) a la línia de fangs de les estacions depuradores de aigües residuals (EDARs). No obstant això, en els darrers anys, ha augmentat l'interès en aplicar processos basats en anammox en la línia principal de l'aigua (menor contingut de nitrogen), que representa la majoria del nitrogen que es aportat a una EDAR. Però l’aplicació de l’eliminació autotrófic de nitrogen té alguns reptes a tractar, com la baixa taxa de creixement de les bacteris anammox, principalment en condicions de baixa temperatura i la supressió del procés de nitratació. Aquesta tesi té com a objectiu estudiar estratègies operatives adequades per fer front als reptes esmentats, per tal d’aconseguir un PNA estable a les principals EDARs urbanes. Les principals estratègies investigades van ser (i) oxigen dissolt (DO) extremadament baix; (ii) efectes de la temperatura; (iv) influència de diferents ràtios IC: N; i (iv) diferents configuracions de reactors: discontinu seqüencial (SBR) i de flux de pistó
Стилі APA, Harvard, Vancouver, ISO та ін.
8

Dale, Olivia R. "Detection, diversity, and activity on anaerobic ammonium oxidizing bacteria (Anammox) in the Cape Fear River Estuary /." Electronic version (PDF), 2007. http://dl.uncw.edu/etd/2007-1/r1/daleo/oliviadale.pdf.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
9

Amano, Teruki. "A molecular ecological study on anaerobic ammonium oxidizing (anammox) bacteria in coastal sediment." Kyoto University, 2011. http://hdl.handle.net/2433/142330.

Повний текст джерела
Анотація:
Kyoto University (京都大学)
0048
新制・課程博士
博士(農学)
甲第16132号
農博第1868号
新制||農||990(附属図書館)
学位論文||H23||N4602(農学部図書室)
28711
京都大学大学院農学研究科応用生物科学専攻
(主査)教授 左子 芳彦, 教授 藤原 建紀, 教授 澤山 茂樹
学位規則第4条第1項該当
Стилі APA, Harvard, Vancouver, ISO та ін.
10

Okhravi, Amanda. "Evaluation of the suppressive effect of intermittent aeration on nitrite-oxidising bacteria in a mainstream nitritation-anammox process." Thesis, Uppsala universitet, Luft-, vatten och landskapslära, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-246763.

Повний текст джерела
Анотація:
An alternative to conventional removal of nitrogen through autotrophic nitrification and heterotrophic denitrification is autotrophic nitritation-anammox. The anammox bacteria oxidise ammonium directly to nitrogen gas with nitrite as an electron acceptor. Total autotrophic removal of nitrogen in the mainstream would bring wastewater treatment plants closer to being energy self-sufficient as it would allow for a significant reduction of aeration and an increased chemical oxygen demand reduction in the pre-treatment. An increased chemical oxygen demand reduction by mechanical treatment would potentially generate a greater biogas yield in the subsequent anaerobic digestion of the sludge. Nitritation-anammox processes have been successfully implemented over the world for treatment of ammonium rich sludge liquor of higher temperatures, while the feasibility of a mainstream implementation is still under evaluation. Lower ammonium concentrations, lower operating temperatures and better effluent quality represent the main challenges considering this energy autarkic treatment technique. Terminating nitrification at nitritation, i.e. favouring ammonia-oxidising bacteria while supressing nitrite-oxidising bacteria, is vital for a functioning nitritation-anammox process. This study aims to evaluate the suppressive effect of intermittent aeration on nitrite- oxidising bacteria while sustaining anammox activity by ex-situ batch tests in a pilot-scale moving bed biofilm reactor at Sjölunda Wastewater Treatment Plant in Malmö, Sweden. The pilot plant consists of one reactor treating sludge liquor and two mainstream reactors, connected in series, receiving effluent from a high-loaded activated sludge plant. The batch test showed a slight decrease of nitrite-oxidising bacteria activity when the reactors were intermittently aerated. Some loss in activity is expected as oxygen supply is decreased when aeration is switched from continuous to intermittent. Furthermore, the decrease coincided with an increased organic carbon loading favouring fast growing heterotrophic bacteria. The decrease in nitrite-oxidising bacteria activity can thereby be coupled with an increased competition for dissolved oxygen and space with heterotrophic bacteria. The suppression of nitrite-oxidising bacteria was not selective as results indicate a decrease in ammonia-oxidising bacteria activity as well. The nitrogen removal rate was decreased during the study while the potential anammox activity was stable in the mainstream and increased in the sludge liquor reactor. This indicates that the anammox bacteria are not hampered but rather that the availability of nitrite, i.e. the activity of ammonia-oxidising bacteria, is the limiting factor of the process.
Ett alternativ till konventionell kväverening via autotrof nitrifikation och heterotrof denitrifikation är autotrof nitritation-anammox. Anammoxbakterien oxiderar ammonium direkt till kvävgas med nitrit som elektronacceptor. Fullständigt autotrof kväverening skulle föra avloppsreningsverk närmare ett självförsörjande energiläge då luftningsbehovet minskas signifikant och en ökad reduktion av organiskt kol via mekanisk rening skulle möjliggöras. Den ökade reduktionen av organiskt kol ger potentiellt en ökad biogasproduktion i den efterkommande anaeroba rötningen av slammet. Framgångsrika nitritation-anammoxprocesser har implementerats över världen för behandling av ammoniumrikt rejektvatten med högre temperatur medan möjligheten för en huvudströmsimplementation utreds. Lägre ammoniumkoncentrationer, lägre drift- temperaturer och höga krav på utgående vattens kvalitet utgör de största utmaningarna för denna reningsteknik. Att avbryta nitrifikation vid nitritation, det vill säga gynna ammoniakoxiderande bakterier och hämma nitritoxiderande bakterier är vitalt för en fungerande nitritation- anammoxprocess. Denna studie ämnar att utvärdera den hämmande effekten av intermittent luftning på nitritoxiderande bakterier samtidigt som anammoxaktiviteten bibehålls. Detta gjordes med hjälp av ex situ -aktivitetstest med bärare från en bioreaktor i pilotskala med rörligt bärarmaterial på Sjölunda Avloppsreningsverk i Malmö. Pilotanläggningen består av en reaktor för behandling av rejektvatten och två huvudströmsreaktorer, kopplade i serie, som mottar vatten från Sjölundas högbelastade aktivslamanläggning. Aktivitetstesterna visade att aktiviteten av nitritoxiderande bakterier sjönk något. En viss minskning i aktiviteten är dock förväntad enbart utifrån att tillförseln av syre minskat då luftningsstrategin ändrats från kontinuerlig till intermittent. Minskningen av aktiviteten sammanföll även med en ökad belastning av organiskt kol, vilket gynnar snabbväxande heterotrofer. Den minskade aktiviteten av nitritoxiderande bakterier kan därmed förklaras av en ökad konkurrens med heterotrofa bakterier om löst syre och plats. De nitritoxiderande bakterierna hämmades inte selektivt då resultaten tyder på att det även skett en minskning av de ammoniakoxiderande bakteriernas aktivitet. Kväverenings- hastigheten har gått ned under studien medan den potentiella anammoxaktiviteten har varit stabil i huvudströmsreaktorerna och har ökat i rejektvattenreaktorn. Detta indikerar att anammoxbakterierna inte blivit hämmade utan att det snarare är tillgången på nitrit, det vill säga aktiviteten av ammoniakoxiderande bakterier, som är begränsande för processen.
Стилі APA, Harvard, Vancouver, ISO та ін.
Більше джерел

Книги з теми "Bacterias anammox"

1

Kirchman, David L. The nitrogen cycle. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198789406.003.0012.

Повний текст джерела
Анотація:
Nitrogen is required for the biosynthesis of many cellular components and can take on many oxidation states, ranging from −3 to +5. Consequently, nitrogen compounds can act as either electron donors (chemolithotrophy) or electron acceptors (anaerobic respiration). The nitrogen cycle starts with nitrogen fixation, the reduction of nitrogen gas to ammonium. Nitrogen fixation is carried out only by prokaryotes, mainly some cyanobacteria and heterotrophic bacteria. The ammonium resulting from nitrogen fixation is quickly used by many organisms for biosynthesis, being preferred over nitrate as a nitrogen source. It is also oxidized aerobically by chemolithoautotrophic bacteria and archaea during the first step of nitrification. The second step, nitrite oxidation, is carried out by other bacteria not involved in ammonia oxidation, resulting in the formation of nitrate. Some bacteria are capable of carrying out both steps (“comammox”). This nitrate can then be reduced to nitrogen gas or nitrous oxide during denitrification. It can be reduced to ammonium, a process called “dissimilatory nitrate reduction to ammonium.” Nitrogen gas is also released by anaerobic oxidation of ammonium (“anammox”) which is carried out by bacteria in the Planctomycetes phylum. The theoretical contribution of anammox to total nitrogen gas release is 29%, but the actual contribution varies greatly. Another gas in the nitrogen cycle, nitrous oxide, is a greenhouse gas produced by ammonia-oxidizing bacteria and archaea. The available data indicate that the global nitrogen cycle is in balance, with losses from nitrogen gas production equaling gains via nitrogen fixation. But excess nitrogen from fertilizers is contributing to local imbalances and several environmental problems in drinking waters, reservoirs, lakes, and coastal oceans.
Стилі APA, Harvard, Vancouver, ISO та ін.

Частини книг з теми "Bacterias anammox"

1

Kartal, Boran, Jan T. Keltjens, and Mike S. M. Jetten. "Metabolism and Genomics of Anammox Bacteria." In Nitrification, 179–200. Washington, DC, USA: ASM Press, 2014. http://dx.doi.org/10.1128/9781555817145.ch8.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
2

Gayathri, G., Dinesh Sankar Reddy, M. Beulah, and M. R. Sudhir. "Removal of Struvite in Wastewater Using Anammox Bacteria." In Handbook of Solid Waste Management, 1–14. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-7525-9_99-1.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
3

Claret Fernández, Laura, Rob Mesman, and Laura van Niftrik. "The Anammoxosome Organelle: The Power Plant of Anaerobic Ammonium-Oxidizing (Anammox) Bacteria." In Bacterial Organelles and Organelle-like Inclusions, 107–23. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-60173-7_5.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
4

Trimmer, Mark, and Pia Engström. "Distribution, Activity, and Ecology of Anammox Bacteria in Aquatic Environments." In Nitrification, 201–35. Washington, DC, USA: ASM Press, 2014. http://dx.doi.org/10.1128/9781555817145.ch9.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
5

Yuan, Yi, Yong Huang, Huiping Deng, Yong Li, and Yang Pan. "Research on Enrichment for Anammox Bacteria Inoculated via Enhanced Endogenous Denitrification." In Lecture Notes in Computer Science, 700–707. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-15615-1_82.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
6

van Niftrik, Laura, Willie J. C. Geerts, Elly G. van Donselaar, Bruno M. Humbel, Arie J. Verkleij, Marc Strous, and Mike S. M. Jetten. "Combined structural and chemical analysis of unique anammox bacteria that contain a prokaryotic organelle." In EMC 2008 14th European Microscopy Congress 1–5 September 2008, Aachen, Germany, 65–66. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-85228-5_33.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
7

Val del Río, Ángeles, Alba Pedrouso Fuentes, Elisa Amanda Giustinianovich, José Luis Campos Gomez, and Anuska Mosquera-Corral. "Anammox Process." In Technologies for the Treatment and Recovery of Nutrients from Industrial Wastewater, 264–89. IGI Global, 2017. http://dx.doi.org/10.4018/978-1-5225-1037-6.ch010.

Повний текст джерела
Анотація:
Application of anammox based processes is nowadays an efficient way to remove nitrogen from wastewaters, being good alternative to the conventional nitrification-denitrification process. This chapter reviews the possible configurations to apply the anammox process, being special attention to the previous partial nitritation, necessary to obtain the adequate substrates for anammox bacteria. Furthermore a description of the main technologies developed and patented by different companies was performed, with focus on the advantages and bottlenecks of them. These technologies are classified in the chapter based on the type of biomass: suspended, granular and biofilm. Also a review is presented for the industrial applications (food industry, agricultural wastes, landfill leachates, electronic industry, etc.), taking into account full scale experiences and laboratory results, as well as microbiology aspects respect to the anammox bacteria genera involved. Finally the possibility to couple nitrogen removal, by anammox, with phosphorus recovery, by struvite precipitation, is also evaluated.
Стилі APA, Harvard, Vancouver, ISO та ін.

Тези доповідей конференцій з теми "Bacterias anammox"

1

Xiao, Jing, Guoren Xu, and Jinhua Tang. "Advance in microbiology and application of anammox bacteria." In 2011 International Conference on Electronics, Communications and Control (ICECC). IEEE, 2011. http://dx.doi.org/10.1109/icecc.2011.6068039.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
2

Jianfeng Wen and Wendong Tao. "Factors Influencing Enrichment of Anammox Bacteria in Baffled Biofilters." In 2010 Pittsburgh, Pennsylvania, June 20 - June 23, 2010. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2010. http://dx.doi.org/10.13031/2013.29904.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
3

Qin, Yu-jie, and Shao-qi Zhou. "Isolation and Identification of Bacteria in the Anammox Activated Sludge." In Proceedings of the II International Conference on Environmental, Industrial and Applied Microbiology (BioMicroWorld2007). WORLD SCIENTIFIC, 2009. http://dx.doi.org/10.1142/9789812837554_0058.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
4

Liu, Sitong, Fenglin Yang, Zheng Gong, Huihui Chen, Yuan Xue, and Tao Wang. "The Enrichment of Anammox Bacteria in Non-Woven Rotating Biological Contactor Reactor." In 2008 2nd International Conference on Bioinformatics and Biomedical Engineering. IEEE, 2008. http://dx.doi.org/10.1109/icbbe.2008.1158.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
5

Zhang, Xue-Hong, Xiao-Yan Lu, and Jie Liu. "Notice of Retraction: Synchronous Removal of Nitrogen and Sulfur from Organic Wastewater by Anammox Bacteria." In 2011 5th International Conference on Bioinformatics and Biomedical Engineering. IEEE, 2011. http://dx.doi.org/10.1109/icbbe.2011.5781114.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
6

Ganesan, Sivarajah, and Vel Murugan Vadivelu. "Study on the effect of external hydrazine addition on Anammox bacteria during the starvation period." In 6TH INTERNATIONAL CONFERENCE ON ENVIRONMENT (ICENV2018): Empowering Environment and Sustainable Engineering Nexus Through Green Technology. AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5117098.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Також вас можуть зацікавити розширені добірки на тему "Bacterias anammox" для конкретних типів джерел:
Статті в журналах Дисертації
Ми пропонуємо знижки на всі преміум-плани для авторів, чиї праці увійшли до тематичних добірок літератури. Зв'яжіться з нами, щоб отримати унікальний промокод!

До бібліографії