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Добірка наукової літератури з теми "Nitrate"

Автор: Grafiati

Опубліковано: 4 червня 2021

Оновлено: 25 липня 2025

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Статті в журналах з теми "Nitrate"

Mawaddah, Aida, Roto Roto, and Adhitasari Suratman. "PENGARUH PENAMBAHAN UREA TERHADAP PENINGKATAN PENCEMARAN NITRIT DAN NITRAT DALAM TANAH (Influence of Addition of Urea to Increased Pollution of Nitrite and Nitrate in The Soil)." Jurnal Manusia dan Lingkungan 23, no. 3 (2017): 360. http://dx.doi.org/10.22146/jml.22473.

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ABSTRAKNitrat dan nitrit merupakan sumber nitrogen bagi tanaman. Nitrogen sangat diperlukan tanaman untuk pertumbuhan dan perkembangan. Bentuk-bentuk nitrogen di lingkungan mengalami transformasi sebagai bagian dari siklus nitrogen seperti nitrifikasi dan denitrifikasi. Apabila kadar nitrogen dalam tanah rendah, maka urea digunakan sebagai sumber nitrogen. Perubahan urea menjadi nitrit atau nitrat pada beberapa sampel tanah perlu diketahui. Kadar nitrit dan nitrat yang tinggi dapat meningkatkan pencemaran di dalam tanah. Sampel tanah yang digunakan dalam penelitian ini adalah tanah pasir, tana

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Bernardo, Patrícia, Luís Patarata, Jose M. Lorenzo, and Maria João Fraqueza. "Nitrate Is Nitrate: The Status Quo of Using Nitrate through Vegetable Extracts in Meat Products." Foods 10, no. 12 (2021): 3019. http://dx.doi.org/10.3390/foods10123019.

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Nitrate and nitrites are used to give the characteristic color to cured meat products and to preserve them. According to the scientific knowledge available at the moment, these compounds are approved as food additives based on a detailed ponderation between the potential risks and benefits. The controversy over nitrites has increased with the release of an IARC Monograph suggesting an association between colorectal cancer and dietary nitrite in processed meats. The trend in “clean label” products reinforced the concern of consumers about nitrates and nitrites in meat products. This review aims

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Mastanjević, Krešimir, Dragan Kovačević, Martina Dančić, and Kristina Habschied. "Levels of nitrite and nitrate content in traditional dry sausage “homemade kulen”." Meso 26, no. 5 (2024): 619–427. http://dx.doi.org/10.31727/m.26.5.3.

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When it comes to sausages production, the meat industry relies on the effectiveness of antimicrobial agents such as nitrite (NO2 − ), nitrate (NO3 − ) and their potassium and sodium salts. These additives are important as curing agents, antioxidants, and they enhance the color, flavor, aroma and inhibit the growth and reproduction of bacteria Staphylococcus aureus and Clostridium botulinum. However, nitrites and nitrates are known to react in such a way to form N-nitrosamines which are, according to the IARC (International Agency for Research on Cancer), claimed as probably or possibly carcino

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Fogarasi, Erzsébet, Ibolya Fülöp, Emanuela Marcu, and Mircea Dumitru Croitoru. "Presence of Nitrate and Nitrite in Well Water in Mureș County." Acta Medica Marisiensis 62, no. 1 (2016): 78–81. http://dx.doi.org/10.1515/amma-2015-0063.

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AbstractObjective: One of the most important sources of nitrite and nitrate anions, besides vegetables and meat products, is the drinking water. Presence of nitrite and nitrate in the water in higher concentrations than those set by EFSA (0.5 mg/l nitrite, 50 mg/l nitrate), may have toxicological significance. A quantitative determination of these ions in samples collected from several pleases from Mureș County was made. Methods: Ninety-seven well water samples were tested from 12 different places from Mureș County. We used a simple HPLC-UV ion pair method for the determination of nitrite and

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KATSOULOS (Π. Δ. ΚΑΤΣΟΥΛΟΣ), P. D., N. PANOUSIS (Ν. ΠΑΝΟΥΣΗΣ), and H. KARATZIAS (Χ. ΚΑΡΑΤΖΙΑΣ). "Nitrate poisoning in ruminants." Journal of the Hellenic Veterinary Medical Society 55, no. 3 (2017): 226. http://dx.doi.org/10.12681/jhvms.15098.

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This paper describes the nitrate - nitrite poisoning of ruminants. This disease is caused by the ingestion of large amount of nitrate salts, which are reduced in the rumen to nitrite ions. Nitrites, after their absorption, cause the formation of methemoglobin and, in turn, respiratory and circulatory distress. The aim of the treatment is to reduce the percentage of methemoglobin in blood and to stop the continuing production of nitrite ions in the rumen. For the prevention of the disease, avoidance of feedstuff rich in nitrates and improvement of the water quality, are suggested.

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Al_Nawaiseh, FY, and RH Mashal. "Nitrate in raw and cooked vegetables: content, variation and influence of cooking methods." African Journal of Food, Agriculture, Nutrition and Development 25, no. 1 (2025): 25596–618. https://doi.org/10.18697/ajfand.138.25335.

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Nitrate concentrations in vegetables are pivotal in dietary nitrate benefit-risk assessments. This study examined nitrate and nitrite levels in vegetables commonly consumed in Jordan, highlighting the impact of different cooking methods (boiling, steaming, baking, stir-frying, and deep frying) on nitrate content. The study examined the nitrate and nitrite levels in 270 raw vegetables and vegetable-based dishes purchased from retail markets and restaurants in Amman, Jordan, during the winter months of 2022 and 2023. Furthermore, 91 experimentally -cooked vegetables were tested for their nitrate

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Yulianti, Wina, Ima Kusumanti, and Nurul Jannah. "Determination of Nitrite and Nitrate Level in Wastewater Discharge from Smoked Fish Industry." JURNAL SAINS NATURAL 12, no. 1 (2022): 17. http://dx.doi.org/10.31938/jsn.v12i1.323.

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This research aimed to determine nitrite and nitrate contamination in wastewater discharge from the smoked fish industry around the fishpond area in Penatarsewu village, Sidoarjo East Java. Samples were taken from ten locations along The Alo River from September to November 2020. Nitrate and nitrite levels were determined by the Standard Method for Examination of Water and Wastewater 4500-NO2-B dan 4500-NO3-B. Nitrite formed a reddishpurple azo dye produced by coupling diazotized sulfanilamide with N-(1-naphthyl)-ethylene-diamine dihydrochloride after a visible spectrophotometer measured the c

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R, Stanek, and Zabranska J*. "Inhibition of Biological Denitrification by Nitric Oxide, Its Early Detection and Prevention of Negative Impact on the Denitrification of Industrial Wastewater." Journal of Biomedical Research & Environmental Sciences 6, no. 1 (2025): 001–11. https://doi.org/10.37871/jbres2050.

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Biological denitrification is used to treat industrial wastewater containing high concentrations of nitrate and sulfate from nitrocellulose production, which contains high concentrations of nitrates and sulfates. The reactor emits brown nitrogen dioxide gas suggesting significant Nitric Oxide (NO) formation and reaction with air. NO may significantly inhibit the denitrification process, reduce treatment efficiency and cause potentially serious issues in nitrocellulose production. An NO-sensitive oxygen luminescence probe demonstrated an accumulation of exceptionally high NO levels. The presenc

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McMullen, Sarah E., John A. Casanova, Lois K. Gross, and Frank J. Schenck. "Ion Chromatographic Determination of Nitrate and Nitrite in Vegetable and Fruit Baby Foods." Journal of AOAC INTERNATIONAL 88, no. 6 (2005): 1793–96. http://dx.doi.org/10.1093/jaoac/88.6.1793.

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Abstract An ion chromatographic method was developed for the determination of nitrate and nitrite in vegetable and fruit baby foods. The introduction of nitrate or nitrite to food may be natural or artificial as a preservative. Because of the higher pH found in babies' stomachs, nitrate can act as a reservoir for the production of nitrite by nitrate-reducing bacteria that can be harbored in the intestinal tract. This problem does not exist in adults because of the lower pH of the adult stomach. Exposure to nitrite by infants can result in methemoglobinemia (blue baby syndrome). There are also

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Drysdale, G. D., H. C. Kasan, and F. Bux. "Assessment of denitrification by the ordinary heterotrophic organisms in an NDBEPR activated sludge sytem." Water Science and Technology 43, no. 1 (2001): 147–54. http://dx.doi.org/10.2166/wst.2001.0036.

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The purpose of this study was to isolate and characterise the ordinary heterotrophic organisms (OHOs) present in a NDBEPR system in order to gain a better understanding of the organisms involved in denitrification as well as a more holistic and accurate evaluation of the OHO fraction attributable to denitrification in such a system. Heterotrophic bacteria were isolated from the pre- and secondary anoxic zones of the Darvill NDBEPR process and characterised according to their ability to reduce nitrates and/or nitrites under anoxic conditions. Results showed that the OHO fraction is more complex

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Дисертації з теми "Nitrate"

Machado, Genikelly Cavalcanti. "Determinação sequencial de nitrato e nitrito por voltametria de pulso diferencial empregando um ultramicroeletrodo de ouro." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/75/75132/tde-20092010-144502/.

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Este trabalho descreve o desenvolvimento de um método eletroanalítico para determinação sequencial de nitrito (NO2-) e nitrato (NO3-), utilizando como técnica, a voltametria de pulso diferencial. O método se baseia na redução eletroquímica dos íons nitrato sobre um ultramicroeletrodo de ouro modificado in situ com cádmio depositado em regime de subtensão, e na seqüência, a remoção da monocamada de cádmio e a oxidação eletroquímica dos íons nitritos sobre o ultramicroeletrodo não modificado. Os ensaios voltamétricos para determinação quantitativa de nitrato e nitrito foram realizados em solução

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Jiquiriçá, Paulo Ricardo Ilha. "Efeitos letais e subletais da poluição por nitrogênio em larvas de anuros." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/41/41134/tde-13122010-144109/.

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As atividades humanas vêm aumentando dramaticamente a quantidade de nitrogênio inorgânico liberado nos ecossistemas, seja através da aplicação de fertilizantes na agricultura, da descarga de dejetos humanos e de seus rebanhos, ou da queima de combustíveis fósseis. Os excessos de nitrogênio são eventualmente transportados para corpos d´água, onde podem, na forma de nitrato, nitrito e amônio, atingir concentrações tóxicas para organismos aquáticos. Nesta pesquisa tive dois objetivos principais. O primeiro foi testar em laboratório a toxicidade relativa dos íons nitrato, nitrito e amônio, e a var

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Pinheiro, Lucas Cézar. "Estudo de mecanismos anti-hipertensivos do nitrito de sódio na hipertensão renovascular experimental." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/17/17133/tde-18032015-230532/.

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O NO regula diversos sistemas orgânicos. No sistema cardiovascular participa ativamente na regulação do tônus vascular entre outras funções. Disfunções na produção ou disponibilidade de NO podem comprometer sua atuação fisiológica. No âmbito vascular isto pode participar da hipertensão. Além da produção de NO pelas óxido nítrico sintases, outras vias paralela de produção fisiológica de NO a partir do nitrito tem sido descritas. O nitrito é o produto inicial da oxidação do NO, sendo posteriormente oxidado a nitrato. Sabe-se que estas três moléculas formam um cic

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Lanza, Luciana Nunes Menolli 1981. "Tolerância ao estresse por hipóxia em soja = os efeitos do nitrato." [s.n.], 2011. http://repositorio.unicamp.br/jspui/handle/REPOSIP/315219.

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Orientador: Ladaslav Sodek<br>Tese (doutorado) - Universidade Esstadual de Campinas, Instituto de Biologia<br>Made available in DSpace on 2018-08-18T18:53:51Z (GMT). No. of bitstreams: 1 Lanza_LucianaNunesMenolli_D.pdf: 7782960 bytes, checksum: 92b0ce21151564c79758f7150c4afd6d (MD5) Previous issue date: 2011<br>Resumo: A soja é a leguminosa de maior importância econômica no Brasil com produção de 72,23 milhões de toneladas na safra de 2010/2011. O cultivo de soja em regiões que sofrem alagamento é uma das principais causas de perda de produtividade no Brasil. Nestas condições, ocorre redução

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Castro, Leonidia Maria de. "Interferência dos metais zinco, chumbo e cobre, no processo de nitrificação no tratamento de efluentes de uma indústria química: estudo de caso." Universidade de São Paulo, 2001. http://www.teses.usp.br/teses/disponiveis/18/18138/tde-27012017-162144/.

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Durante o estudo de um sistema de tratamento de efluentes de uma indústria química, contendo em suas águas residuárias vários metais pesados foi observada a ineficiência no processo de nitrificação do efluente tratado. Diante dessa constatação, desenvolveu-se este trabalho visando estudar as interferências dos metais pesados, Pb2+, Zn2+ e Cu2+ no desempenho do processo de nitrificação em um sistema similar de tratamento. Para observação dos efeitos dos metais Zn2+, Pb2+ e Cu2+ isoladamente, foram montados 3 reatores e simuladas as concentrações afluentes do tanque de aeração da indústria. Outr

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Melane, Pumeza. "Kinetics reactions of Ammonium Nitrate-Sodium Nitrite Reaction and Ammonium Nitrate Emulsion Explosives." Master's thesis, University of Cape Town, 2010. http://hdl.handle.net/11427/6333.

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The aim of this study was to understand and control the gasification rates in ammonium nitrate emulsion explosive using ammonium nitrate-sodium nitrite reaction. This reaction produces N2 gas which is the sensitizer in emulsion explosives. The NH4NO3-NaNO2 gassing reaction produces N2 gas and so the reaction could be followed by the pressure increase in a closed reaction vessel. The reaction is pH sensitive, so the role of pH was investigated in the pH range 2 to 5. Gasification reactions for unbuffered NH4NO3-NaNO2 reaction were found to be rapid below pH = 3 and maximum pressure was attained

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Fletgen, Marie Christine. "Le devenir des nitrates et des nitrites dans l'organisme humain et leur danger potentiel : problème des nitrosamines." Paris 5, 1992. http://www.theses.fr/1992PA05P241.

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Hüsler, Bruno R. "Nitrite/nitrate status in veal calves: effects of feeding nitrite, nitrate, arginine, and iron and of endotoxin administration /." [S.l.] : [s.n.], 1999. http://www.stub.unibe.ch/html/haupt/datenbanken/diss/bestell.html.

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Melchert, Wanessa Roberto. "Desenvolvimento de procedimentos analíticos limpos em sistemas de análises em fluxo para determinação de espécies de interesse ambiental." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/46/46133/tde-20102006-084230/.

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A química limpa tem como principal objetivo o desenvolvimento e a implementação de processos e produtos químicos para reduzir ou eliminar o uso ou a geração de substâncias nocivas à saúde humana e ao meio ambiente. Neste trabalho, foram desenvolvidos procedimentos analíticos limpos para a determinação de nitrato e nitrito em águas naturais e para o tratamento dos resíduos gerados na determinação espectrofotométrica de nitrito e fenóis. Para tanto, foram exploradas as principais estratégias empregadas em química limpa: substituição dos reagentes tóxicos, minimização do consumo dos reagentes e d

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Ferreira, Paulo Eduardo Gomes. "Efeito de um programa pré-operatório de fortalecimento supervisionado da musculatura inspiratória na evolução hospitalar de pacientes submetidos a operações cardíacas." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/17/17137/tde-05042013-230022/.

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Introdução: A disfunção respiratória é uma das complicações mais frequentes após operações cardíacas. Vários fatores contribuem para que as disfunções respiratórias ocorram, dentre eles está a disfunção da musculatura inspiratória que, por sua vez, pode ser multifatorial. Objetivo: O condicionamento da musculatura inspiratória no período pré-operatório poderia ajudar a reduzir a incidência de complicações respiratórias no pós-operatório de operações cardíacas. Métodos: No presente trabalho 21 pacientes voluntários, de ambos os sexos, com idade mínima de 50 anos, com fraqueza de musculatura ins

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Книги з теми "Nitrate"

Bryan, Nathan S., and Joseph Loscalzo, eds. Nitrite and Nitrate in Human Health and Disease. Humana Press, 2011. http://dx.doi.org/10.1007/978-1-60761-616-0.

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Bryan, Nathan S., and Joseph Loscalzo, eds. Nitrite and Nitrate in Human Health and Disease. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-46189-2.

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Loscalzo, Joseph, and Nathan S. Bryan. Nitrite and nitrate in human health and disease. Humana Press, 2011.

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Imperial Cancer Research Fund (Great Britain). Nitrate, nitrite and nitroso compounds in human cancer. Edited by Forman David, Shuker David, and Shuker David E. G. Published for the Imperial Cancer Research Fund by Oxford University Press, 1989.

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International Agency for Research on Cancer and World Health Organization, eds. Ingested nitrate and nitrite, and cyanobacterial peptide toxins. International Agency for Research on Cancer, 2010.

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Tsadilas, Christos. Nitrate Handbook. CRC Press, 2021. http://dx.doi.org/10.1201/9780429326806.

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Bogárdi, Istvan, Robert D. Kuzelka, and Wilma G. Ennenga, eds. Nitrate Contamination. Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-76040-2.

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E, Rezaković Dženana, and Alpert Joseph S, eds. Nitrate therapy & nitrate tolerance: Current concepts and controversies. Karger, 1993.

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Edmundson, William. The Nitrate King. Palgrave Macmillan US, 2011. http://dx.doi.org/10.1057/9780230118799.

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Alahi, Md Eshrat E., and Subhas Chandra Mukhopadhyay. Smart Nitrate Sensor. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-20095-4.

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Частини книг з теми "Nitrate"

Makkar, Harinder P. S., P. Siddhuraju, and Klaus Becker. "Nitrate and Nitrite." In Plant Secondary Metabolites. Humana Press, 2007. http://dx.doi.org/10.1007/978-1-59745-425-4_7.

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Ware, George W. "Nitrate and Nitrite." In Reviews of Environmental Contamination and Toxicology. Springer New York, 1988. http://dx.doi.org/10.1007/978-1-4684-7083-3_10.

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Bellucci, Elisa Rafaela Bonadio, Camila Vespúcio Bis Souza, José Manuel Lorenzo, et al. "Nitrate and Nitrite." In Methods to Assess the Quality of Meat Products. Springer US, 2022. http://dx.doi.org/10.1007/978-1-0716-2002-1_8.

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Bryan, Nathan S. "Inorganic Nitrate and Nitrite." In Nitrate Handbook. CRC Press, 2021. http://dx.doi.org/10.1201/9780429326806-21.

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Klurfeld, David M. "Nitrite and Nitrate in Cancer." In Nitrite and Nitrate in Human Health and Disease. Humana Press, 2011. http://dx.doi.org/10.1007/978-1-60761-616-0_16.

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Klurfield, David M. "Nitrite and Nitrate in Cancer." In Nitrite and Nitrate in Human Health and Disease. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-46189-2_21.

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Hotchkiss, Joseph H., Michael A. Helser, Chris M. Maragos, and Yin-Ming Weng. "Nitrate, Nitrite, andN-Nitroso Compounds." In ACS Symposium Series. American Chemical Society, 1992. http://dx.doi.org/10.1021/bk-1992-0484.ch033.

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Lück, Erich, and Martin Jager. "Nitrate." In Chemische Lebensmittelkonservierung. Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-642-57868-7_9.

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Lück, Erich. "Nitrate." In Chemische Lebensmittelkonservierung. Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-96924-9_11.

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Bailey, Stephen J., Anni Vanhatalo, and Andrew M. Jones. "Nitrate and Exercise Performance." In Nitrite and Nitrate in Human Health and Disease. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-46189-2_20.

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Тези доповідей конференцій з теми "Nitrate"

Mickalonis, J. I. "Corrosion of Steel in Simulated Nuclear Waste Solutions." In CORROSION 1994. NACE International, 1994. https://doi.org/10.5006/c1994-94117.

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Abstract Processing of inhibited nuclear waste to forms for long-term storage will cause waste tank environments to have dynamic conditions. During processing compositional changes in the waste may produce a corrosive environment for the plain carbon steel tanks. Large concentrations of nitrates which corrode steel are contained in the waste. Nitrite and hydroxides are added to inhibit any corrosion. Concentration changes of nitrate and nitrite were investigated to identify corrosion regimes that may occur during processing. Corrosion testing was performed with cyclic potentiodynamic polarizat

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Hubert, C., G. Voordouw, M. Nemati, and G. E. Jenneman. "Is Souring and Corrosion by Sulfate-Reducing Bacteria in Oil Fields Reduced More Efficiently by Nitrate or by Nitrite?" In CORROSION 2004. NACE International, 2004. https://doi.org/10.5006/c2004-04762.

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Abstract Successful application of both nitrate and nitrite to combat souring in oil fields has been reported. The effect of these treatments on corrosion is not well documented. Using up-flow, packed-bed bioreactors simulating an oil field we have found that both nitrate and nitrite are effective sulfide removers. The required dose depended on the concentration of oil organics used as the energy source by the microbial community. Because of its higher oxidative power, nitrate can remove more oxidizable oil organics than nitrite. However, nitrite is a strong SRB inhibitor. Nitrate gives less S

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Voordouw, G., M. Nemati, and G. E. Jenneman. "Use of Nitrate-Reducing, Sulfide-Oxidizing Bacteria to Reduce Souring in Oil Fields: Interactions with SRB and Effects on Corrosion." In CORROSION 2002. NACE International, 2002. https://doi.org/10.5006/c2002-02034.

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Abstract Injection of nitrate or nitrite into oil reservoirs can reduce the sulfide concentration through the activity of nitrate-reducing, sulfide-oxidizing bacteria. These inhibit sulfate-reducing bacteria (SRB), but appear to contribute also to increased corrosion risk. Combinations of nitrate or nitrite with other inhibitors can work synergistically in inhibiting SRB activity.

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Zapp, Philip E., and John W. Van Zee. "Electrochemical Studies of Nitrate-Induced Pitting in Carbon Steel." In CORROSION 1999. NACE International, 1999. https://doi.org/10.5006/c1999-99471.

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Abstract The phenomenon of pitting in carbon steel exposed to alkaline solutions of nitrate and chloride was studied with the cyclic potentiodynamic polarization technique. Open-circuit and pitting potentials were measured on specimens of ASTM A537 carbon steel in pH 9.73 salt solutions at 40°C, with and without the inhibiting nitrite ion present. Nitrate is not so aggressive a pitting agent as is chloride. Both nitrate and chloride did induce passivity breakdown and pitting in nitrite-free solutions, but the carbon steel retained passivity in solutions with 0.11-M nitrite even at a nitrate co

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Folwell, Benjamin, Jan Larsen, Alessandra Allegrucci, and Andrew Price. "Investigation of the Effects of Nitrate and Nitrite on Halfdan Sulfate-Reducing Archaea." In CORROSION 2016. NACE International, 2016. https://doi.org/10.5006/c2016-07162.

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Abstract Nitrate injection forms part of the mitigation strategy used in the Halfdan field to control reservoir souring. A review of Halfdan well data suggests that the H2S generated is due to the activity of sulfate-reducing archaea (SRA) in the Halfdan producing wells. The aim of this study was to determine SRA susceptibility to inhibition by nitrite, and determine whether SRA contain known nitrate and nitrite reduction genes. qPCR was used to enumerate total Archaea, narG, nirK and nirS copies (nitrate- and nitrite-reducing genes) in the produced water from five Halfdan producing wells. SRA

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Hubert, C., G. Voordouw, J. Arensdorf, and G. E. Jenneman. "Control of Souring through a Novel Class of Bacteria That Oxidize Sulfide as Well as Oil Organics with Nitrate." In CORROSION 2006. NACE International, 2006. https://doi.org/10.5006/c2006-06669.

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Abstract Hydrogen sulfide production by sulfate-reducing bacteria (SRB) in oil fields (souring) can be eliminated through the activity of nitrate-reducing bacteria (NRB). Two distinct classes of NRB have been described. The heterotrophic NRB (hNRB) reduce nitrate using similar oil organics as used by SRB for the reduction of sulfate. These inhibit SRB by competitive exclusion. The nitrate-reducing, sulfide-oxidizing bacteria (NR-SOB) directly oxidize sulfide with nitrate. Many of these use only CO2 as the carbon source and do not compete with SRB for oil organics. Both hNRB and NR-SOB produce

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Locke, Carl E., and Oladis Rincon. "A Study of Corrosion Electrochemistry of Steel in Chloride Contaminated Concrete Using a Rapid Scan Polarization Technique." In CORROSION 1987. NACE International, 1987. https://doi.org/10.5006/c1987-87128.

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Abstract Corrosion of steel in portland cement concrete has been found to be very damaging and costly to many countries in the world. It is possible to control this corrosion damage in several ways and one of these is the use of inhibitors. Several electrochemical techniques have been used and this paper illustrates rapid scan polarization as one applied to the study of inhibitors in concrete. Work conducted at the University of Oklahoma studied the effect of oxygen and salt on the behavior of steel in concrete. Investigators at the University of Zulia studied several compounds as possible inh

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Yin, Bei, and Kenneth Wunch. "Combined Effects of Microbes and Nitrate on SRB Growth, Souring and Corrosion." In CORROSION 2017. NACE International, 2017. https://doi.org/10.5006/c2017-09425.

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Abstract Controlling reservoir souring is critical to successful production and asset protection in hydrocarbon recovery. Nitrate injection has been used in water flooding for controlling biogenic sulfide in oil reservoirs. Souring control via nitrate implementation is based on the interactions between nitrate-reducing bacteria (NRB) and sulfate-reducing bacteria (SRB). As a result, it is important to understand how the NRB and SRB population profile controls the effectiveness of nitrate on SRB growth, sulfide levels, and corrosion. In laboratory studies, the impact of NRB (including denitrifi

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Tanji, Yasunori, Kazuhiko Miyanaga, and Kamarisima. "Mpact of Nitrate Addition on the Population Dynamics of Surfate-Reducing and Nitrate-Reducing Bacteria in the Oilfield Water." In CORROSION 2019. NACE International, 2019. https://doi.org/10.5006/c2019-12743.

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Abstract Seawater injection into oil reservoirs for secondary oil recovery is frequently accompanied by souring. Souring causes various problems, such as microbiologically influenced corrosion (MIC) and deterioration of crude oil. Sulfate-reducing bacteria (SRB) are considered to be major players in souring. Nitrate injection has been widely used to control the growth of SRB. The aim of this study was to investigate the changes in the bacterial community in response to nitrate addition to control biological souring. We investigated the effect of nitrate addition in an artificial souring experi

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Justnes, H. "Inhibiting Chloride Induced Corrosion of Concrete Rebars by Calcium Nitrate Addition." In CORROSION 2003. NACE International, 2003. https://doi.org/10.5006/c2003-03287.

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Abstract Both calcium nitrate and calcium nitrite may act as anodic inhibitors against chloride induced corrosion of rebars in concrete through a similar mechanism, although the kinetics of reaction may be different. Recently an extended test programme was launched for direct comparison of inhibitor performance of calcium nitrate versus nitrite at equimolar dosage, in addition to comparison of the inhibitors against a reference concrete without inhibitor addition. The test program and strategy are described in detail. Specimens are still only 1 years old, so examples of inhibitor performance a

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Звіти організацій з теми "Nitrate"

Hobbs, D. T. Evaluation of nitrate and nitrite destruction/separation technologies. Office of Scientific and Technical Information (OSTI), 1997. http://dx.doi.org/10.2172/573703.

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Van Rijn, Jaap, Harold Schreier, and Yossi Tal. Anaerobic ammonia oxidation as a novel approach for water treatment in marine and freshwater aquaculture recirculating systems. United States Department of Agriculture, 2006. http://dx.doi.org/10.32747/2006.7696511.bard.

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Ammonia waste removal in recirculating aquaculture systems is typically accomplished via the action of nitrifying bacteria in specially designed biofilters that oxidize ammonia to produce nitrate. In the majority of these systems nitrate is discharged to the environment through frequent water exchanges. As environmental considerations have made it necessary to eliminate nitrate release, new strategies for nitrate consumption are being developed. In the funding period we showed that ammonia removal from wastewater could take place by an anaerobic ammonia oxidation process carried out by bacteri

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Congdon, J. W. Effect of Nitrite/Nitrate concentrations on Corrosivity of Washed Precipitate. Office of Scientific and Technical Information (OSTI), 2001. http://dx.doi.org/10.2172/781032.

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Asmussen, Robert, Christopher Bagwell, Derek Dixon, et al. Nitrate and Nitrite at Hanford – From Tanks to Natural Attenuation. Office of Scientific and Technical Information (OSTI), 2024. https://doi.org/10.2172/2483349.

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Szecsody, James, Robert Mackley, and Charles Resch. Characterization of Nitrate, Nitrite, Ammonia, and Tritium in D0220 Cores. Office of Scientific and Technical Information (OSTI), 2024. http://dx.doi.org/10.2172/2476875.

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Burger, L. L., and R. D. Scheele. The reactivity of cesium nickel ferrocyanide towards nitrate and nitrite salts. Office of Scientific and Technical Information (OSTI), 1991. http://dx.doi.org/10.2172/5293537.

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Cox, J. L., M. A. Lilga, and R. T. Hallen. Thermochemical nitrate reduction. Office of Scientific and Technical Information (OSTI), 1992. http://dx.doi.org/10.2172/7077253.

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Upadhyaya, Shrini K., Abraham Shaviv, Abraham Katzir, Itzhak Shmulevich, and David S. Slaughter. Development of A Real-Time, In-Situ Nitrate Sensor. United States Department of Agriculture, 2002. http://dx.doi.org/10.32747/2002.7586537.bard.

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Although nitrate fertilizers are critical for enhancing crop production, excess application of nitrate fertilizer can result in ground water contamination leading to the so called "nitrate problem". Health and environmental problems related to this "nitrate problem" have led to serious concerns in many parts of the world including the United States and Israel. These concerns have resulted in legislation limiting the amount of nitrate N in drinking water to 10mg/g. Development of a fast, reliable, nitrate sensor for in-situ application can be extremely useful in dynamic monitoring of environmen

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Mickalonis, J. I. Corrosion of steel in simulated waste containing different nitrate and nitrite concentrations. Office of Scientific and Technical Information (OSTI), 1993. http://dx.doi.org/10.2172/10177023.

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ADAS, RSK. Nitrate Surveillance Monitoring Program (Annual Report May 2021 - March 2022). Food Standards Agency, 2022. http://dx.doi.org/10.46756/sci.fsa.uau489.

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Every Member State is required to monitor and report levels of nitrate in specified foodstuffs as part of the European Commission regulation and the UK also requires this information as part of the collection of data to support the review of retained EU law in the UK and inform the setting of policy around maximum nitrate levels. The requirement to carry out monitoring for nitrate in lettuce, spinach and rocket is being met by the UK Nitrate Surveillance Programme. Results are presented for the period between 1st April 2021 and 31st March 2022. A total of 202 samples were collected within the

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