Relevant bibliographies by topics / Naphthoic acid

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Naphthoic acid'

Author: Grafiati
Published: 4 June 2021
Last updated: 17 February 2022

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Journal articles on the topic "Naphthoic acid"

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Meckenstock, Rainer U., Eva Annweiler, Walter Michaelis, Hans H. Richnow, and Bernhard Schink. "Anaerobic Naphthalene Degradation by a Sulfate-Reducing Enrichment Culture." Applied and Environmental Microbiology 66, no. 7 (July 1, 2000): 2743–47. http://dx.doi.org/10.1128/aem.66.7.2743-2747.2000.

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ABSTRACT Anaerobic naphthalene degradation by a sulfate-reducing enrichment culture was studied by substrate utilization tests and identification of metabolites by gas chromatography-mass spectrometry. In substrate utilization tests, the culture was able to oxidize naphthalene, 2-methylnaphthalene, 1- and 2-naphthoic acids, phenylacetic acid, benzoic acid, cyclohexanecarboxylic acid, and cyclohex-1-ene-carboxylic acid with sulfate as the electron acceptor. Neither hydroxylated 1- or 2-naphthoic acid derivatives and 1- or 2-naphthol nor the monoaromatic compounds ortho-phthalic acid, 2-carboxy-1-phenylacetic acid, and salicylic acid were utilized by the culture within 100 days. 2-Naphthoic acid accumulated in all naphthalene-grown cultures. Reduced 2-naphthoic acid derivatives could be identified by comparison of mass spectra and coelution with commercial reference compounds such as 1,2,3,4-tetrahydro-2-naphthoic acid and chemically synthesized decahydro-2-naphthoic acid. 5,6,7,8-Tetrahydro-2-naphthoic acid and octahydro-2-naphthoic acid were tentatively identified by their mass spectra. The metabolites identified suggest a stepwise reduction of the aromatic ring system before ring cleavage. In degradation experiments with [1-13C]naphthalene or deuterated D8-naphthalene, all metabolites mentioned derived from the introduced labeled naphthalene. When a [13C]bicarbonate-buffered growth medium was used in conjunction with unlabeled naphthalene, 13C incorporation into the carboxylic group of 2-naphthoic acid was shown, indicating that activation of naphthalene by carboxylation was the initial degradation step. No ring fission products were identified.
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Song, Yuan Jun, Chun Zhang, and Jing Jing Li. "The Purification and Analysis of 6 - Hydroxy -2 - Naphthoic Acid." Advanced Materials Research 602-604 (December 2012): 1391–95. http://dx.doi.org/10.4028/www.scientific.net/amr.602-604.1391.

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When synthetizing 2 - hydroxy - 6 - naphthoic acid with 2 - naphthol as raw material , we use a variety of methods to characterize and analyze the intermediates and target product . Through melting point method, the melting point of HNA we synthetized is showed to be slightly lower than standard samples. High performance liquid chromatographic shows that the purity of 2 - methoxy - 6 - naphthoic acid 2 - hydroxy - 6 - naphthoic acid reach up to 81.98% and 99.0% respectively. The purity of 2-hydroxyl-6-naphthoic acid is showed to be 97.1% with ultraviolet spectrophotometry.
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Ptáček, Aleš, and Jiří Kulič. "Effect of OH- Concentration on Alkaline Hydrolysis of Diphenyl (4-Nitrophenyl) Phosphate Catalyzed by 2-Iodosobenzoic and 3-Iodoso-2-naphthoic Acids." Collection of Czechoslovak Chemical Communications 59, no. 5 (1994): 1137–44. http://dx.doi.org/10.1135/cccc19941137.

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The hydrolysis of diphenyl (4-nitrophenyl) phosphate catalyzed by 2-iodosobenzoic and 3-iodoso-2-naphthoic acids has been studied at different pH values in the presence of hexadecyltrimethylammonium bromide as a micellar agent. It was found that 3-iodoso-2-naphthoic acid is better catalyst than 2-iodosobenzoic acid. At amounts of the acids higher than stoichiometric, the reaction is independent of pH in the 8.00 to 10.00 region while on using substoichiometric amounts, the reaction rate depends on OH- ion concentration only when the acid to diphenyl (4-nitrophenyl) phosphate molar ratio amounts to 12.5 : 1 for 2-iodosobenzoic acid and 6.25 : 1 for 3-iodoso-2-naphthoic acid.
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Fitzgerald, L. J., and R. E. Gerkin. "Redetermination of the structures of 1-naphthoic acid and 2-naphthoic acid." Acta Crystallographica Section C Crystal Structure Communications 49, no. 11 (November 15, 1993): 1952–58. http://dx.doi.org/10.1107/s0108270193002641.

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Pařík, Patrik, and Miroslav Ludwig. "Acid-Base Properties of Substituted Naphthoic Acids in Nonaqueous Media." Collection of Czechoslovak Chemical Communications 62, no. 11 (1997): 1737–46. http://dx.doi.org/10.1135/cccc19971737.

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Thirteen substituted 1-naphthoic acids have been prepared and their dissociation constants, along with those of twenty-five substituted 2-naphthoic acids, have been measured potentiometrically in methanol, N,N-dimethylformamide, pyridine, and acetonitrile. The pKHA values obtained have been treated by linear regression using four sets of substituent constants. The experimental data have also been interpreted by statistical methods using latent variables. The first latent variable calculated by these methods can be used as a new set of substituent constants for describing substituent effects in naphthalene skeleton.
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Blackburn, A. C., L. J. Fitzgerald, and R. E. Gerkin. "2-Naphthoic Acid at 153K." Acta Crystallographica Section C Crystal Structure Communications 52, no. 11 (November 15, 1996): 2862–64. http://dx.doi.org/10.1107/s0108270196008876.

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Souza, Bruno S., Ramon Vitto, Faruk Nome, Anthony J. Kirby, and Adailton J. Bortoluzzi. "3-Acetoxy-2-naphthoic acid." Acta Crystallographica Section E Structure Reports Online 66, no. 11 (October 20, 2010): o2848. http://dx.doi.org/10.1107/s1600536810040365.

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Blackburn, A. C., and R. E. Gerkin. "1,4-Dimethoxy-2-naphthoic Acid." Acta Crystallographica Section C Crystal Structure Communications 53, no. 10 (October 15, 1997): 1425–27. http://dx.doi.org/10.1107/s0108270197008299.

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Song, Yun-Sung, and Soon W. Lee. "6-Nicotinamido-2-naphthoic acid." Acta Crystallographica Section E Structure Reports Online 68, no. 7 (June 2, 2012): o1978. http://dx.doi.org/10.1107/s1600536812024051.

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Song, Yuan Jun, Yan Wei Li, Bao Qing Pan, and Hao Nan Song. "Synthesis of 2-Acetoxy-6-Naphthoic Acid with P-Methylbenzenesulfonic Acid as Catalyst." Applied Mechanics and Materials 152-154 (January 2012): 306–11. http://dx.doi.org/10.4028/www.scientific.net/amm.152-154.306.

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2-acetoxy-6-naphthoic acid (ANA) was synthesized in the presence of 2-hydroxy -6-naphthoic acid (HNA) and acetic anhydride (CH3CO)2O with toluenesulfonic acid (PTSA) as catalyst. The effects of reactant ratio, temperature, time were investigated in the acetylation process. 1H-NMR、13C-NMR、FT-IR、HPLC measurements indicate the optimal acetylation reaction condition when the ratio of HNA: (CH3CO)2O : PTSA are 1: 2.3:0.025 under the temperature at 90~95°C for 40min.
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Dissertations / Theses on the topic "Naphthoic acid"

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Phale, Prashant S. "Biodegradation Of 1-Naphthoic Acid." Thesis, Indian Institute of Science, 1994. http://hdl.handle.net/2005/91.

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Polycyclic aromatic hydrocarbons (PAHs) are compounds containing carbon and hydrogen atoms of fused benzene rings in linear, angular or cluster arrangements. These compounds have a large (negative) resonance energy, resulting in a thermodynamically stable structures. PAHs may also contain alkyl- and nitro-substituent groups. The complexity in these molecules can be generated by substituting the aromatic carbon atom with nitrogen, oxygen or sulfur, giving rise to heterocyclic PAHs.
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Gorrino, Vicandi Maria Teresa. "The metabolism of 2-naphthoic acid by a soil pseudomonad." Thesis, Imperial College London, 1988. http://hdl.handle.net/10044/1/47083.

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Brandal, Øystein. "Interfacial (o/w) Properties of Naphthenic Acids and Metal Naphthenates, Naphthenic Acid Characterization and Metal Naphthenate Inhibition." Doctoral thesis, Norwegian University of Science and Technology, Department of Chemical Engineering, 2005. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-651.

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Deposition of metal naphthenates in process facilities is becoming a huge problem for petroleum companies producing highly acidic crudes. In this thesis, the main focus has been towards the oil-water (o/w) interfacial properties of naphthenic acids and their ability to react with different divalent cations across the interface to form metal naphthenates.

The pendant drop technique was utilized to determine dynamic interfacial tensions (IFT) between model oil containing naphthenic acid, synthetic as well as indigenous acid mixtures, and pH adjusted water upon addition of different divalent cations. Changes in IFT caused by the divalent cations were correlated to reaction mechanisms by considering two reaction steps with subsequent binding of acid monomers to the divalent cation. The results were discussed in light of degree of cation hydration and naphthenic acid conformation, which affect the interfacial conditions and thus the rate of formation of 2:1 complexes of acid and cations. Moreover, addition of non-ionic oil-soluble surfactants used as basis compounds in naphthenate inhibitors was found to hinder a completion of the reaction through interfacial dilution of the acid monomers.

Formation and stability of metal naphthenate films at o/w interfaces were studied by means of Langmuir technique with a trough designed for liquid-liquid systems. The effects of different naphthenic acids, divalent cations, and pH of the subphase were investigated. The results were correlated to acid structure, cation hydration, and degree of dissociation, which all affect the film stability against compression.

Naphthenic acids acquired from a metal naphthenate deposit were characterized by different spectroscopic techniques. The sample was found to consist of a narrow family of 4-protic naphthenic acids with molecular weights around 1230 g/mol. These acids were found to be very o/w interfacially active compared to normal crude acids, and to form Langmuir monolayers with stability depending on the aqueous pH. At high pH, addition of Ca2+ increased the film stability due to formation of calcium naphthenate at the surface.

A new experimental setup based on near infrared spectroscopy was used to monitor the formation, growth, and inhibition of calcium naphthenate particles in o/w systems. This method was found to be suitable for studies of particle formation rate and growth qualitatively under different experimental conditions.

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Gutierrez, Villagomez Juan Manuel. "Effects of Naphthenic Acids and Acid Extractable Organic Mixtures on Development of The Frog Silurana (Xenopus) Tropicalis." Thesis, Université d'Ottawa / University of Ottawa, 2018. http://hdl.handle.net/10393/37707.

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Naphthenic acids (NAs) are oil-derived mixtures of carboxylic acids and are aquatic contaminants of emerging concern. The objective of the research presented in this thesis was to investigate the toxicity of NAs in tadpoles of the frog Silurana (Xenopus) tropicalis. Using electrospray ionization high-resolution mass spectrometry (ESI-HRMS), I determined that the proportions of O2 (presumably carboxylic acid moiety) species were 98.8, 98.9 and 58.6% respectively, for two commercial extracts (S1 and S2), and acid extractable organics (AEOs) from oil sands process-affected water (OSPW). The rank order potency based on the lethal concentration fifty (LC50) and effect concentration fifty (EC50) with and without normalization for the quantity of O2 species was S1 > S2 > AEO. The main effects observed were reduced body size, edema, and cranial, cardiac, gut and ocular abnormalities. Oligonucleotide microarray technology was used to determine the transcriptomic responses in developing S. tropicalis embryos following exposure to S1 and S2 at a sub-lethal concentration of 2 mg/L. Some of the significantly enriched pathways (p < 0.05) included metabolism and cell membrane depolarization, and some were related to observed abnormalities including edema, gastrointestinal system, and cartilage differentiation. I established and validated a derivatization method for NAs using pentafluorobenzyl bromide (PFBBr) prior to gas chromatography-electron impact mass spectrometry (GC-EIMS) to increase chromatographic resolution, and sensitivity, compared to boron trifluoride-methanol (BF3/MeOH) and N-tert-Butyldimethylsilyl-N-methyltrifluoroacetamide (MTBSTFA). Solid-phase microextraction of volatiles originating from S1, S2, Merichem NAs and an AEO mixture led to the identification of 54, 56, 40 and 4 compounds, respectively. The compounds identified in the mixtures included aliphatic and cyclic hydrocarbons, carboxylic acids, alkyl-benzenes, phenols, naphthalene and alkyl-naphthalene, and decalin compounds. To determine the chemical nature of the toxic compounds in NA mixtures, the S2 and AEOs preparations were fractionated using open column chromatography. A non-polar and a polar fraction were obtained from S2. Overall, the toxicity of the polar fraction was not significantly different from whole S2 (p > 0.05). Six fractions of AEOs were obtained, however because of limited material, only the toxicities of F3 and F4 were assessed. The toxicity of F3 was significantly lower than AEOs (p < 0.05) and F4 was not toxic for S. tropicalis (p > 0.05). These results suggest that during fractionation, toxic compounds were lost or that the toxicity of AEOs results from the combined effects of the compounds present in the whole extract. The toxicological dose descriptors, morphometric, transcriptomic and chemical analysis herein presented may contribute to the development of environmental guidelines for NAs and AEOs.
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Gervais, Francoise. "Fate and Transport of Naphthenic Acids in Glacial Aquifers." Thesis, University of Waterloo, 2004. http://hdl.handle.net/10012/1229.

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Naphthenic acids (NAs) are carboxylated alkanes and cycloalkanes concentrated in wastewater during oil sands processing. The general chemical formula is C{n}H{n+Z}O{2}, where n represents the number of carbon atoms and Z specifies a homologous family with 0-6 rings (Z=0 to Z=-12). The wastewater is acutely toxic to surface water organisms and is stored in tailings ponds with over 230 million m³ of fines tailings and free water. The purpose of this thesis was to provide a preliminary evaluation of the potential attenuation of NAs during groundwater flow from the ponds. Laboratory studies were conducted to evaluate possible attenuation mechanisms. Aerobes from aquifer material degraded 60% of the NAs over 20 weeks in laboratory microcosms. The greatest decrease occurred in the low molecular weight bicyclic homologues with 12 to 16 carbons. The microbial activity confirms that aerobic naphthenate-degrading bacteria occur naturally in the glacial aquifer near Suncor's Pond 2/3. These results support the hypothesis that limited aerobic biodegradation of the smaller components of NAs could occur relatively rapidly under field conditions. There was no measurable decrease in NA concentration over six months in anaerobic microcosms, although microbial activity did lead to sulfate-reducing and methanogenic conditions. The theoretical retardation in glacio-fluvial sands was calculated using soil-water partitioning coefficients (K{d}) determined by batch equilibration experiments using a mixture of naturally occurring naphthenic acids as well as the nine surrogates. The retardation (porosity of 0. 3, bulk density of 1. 5 g/mL) ranged from 1. 2 to 2. 6. However, no measurable sorption was seen at the field sites. Detailed characterization allows us to examine how the proportions of homologue, or groups of molecules with the same molecular weight and number of cycloalkane rings, vary. Aerobic biodegradation favoured removal of low molecular weight NAs. A 15% mass loss attributed to sorption caused no changes in the 3D signature. Thus, changes in NA "signature" in groundwater systems were then attributed to aerobic biodegradation. Three plumes were examined for evidence of attenuation of NAs via biodegradation. First, the individual samples were classified as background, possibly process-affected or process-affected using a combination of Piper diagrams, the stable isotopes oxygen-18 and deuterium, dissolved chloride and sodium, as well as the total naphthenic acids concentration. Second, in order to estimate attenuation due to dispersive dilution, a linear correlation line was drawn between various conservative tracers and the naphthenic acids concentration. This allowed the identification of certain samples as possibly having a lower concentration of NAs than could be expected from simple dispersive dilution. Third, the 3D signature of certain samples were examined for the presence of the aerobic biodegradation 3D signature. One site showed good evidence for aerobic biodegradation of naphthenic acids. A second site showed some evidence for biodegradation under methanogenic conditions but the evidence was not definitive. The evidence at the third site was contradictory and no conclusions could be drawn from it. This research suggests some attenuation of NAs by biodegradation may be possible during groundwater flow.
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Zhang, Wo Su. "Naphthenic Acids Disrupt Courtship in Silurana tropicalis." Thesis, Université d'Ottawa / University of Ottawa, 2020. http://hdl.handle.net/10393/41148.

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Neuroendocrine processes coordinate the behavioural, physiological, and seasonal aspects of reproduction. Some chemicals can disrupt the hypothalamus-pituitary-gonadal axis, impacting reproductive health. Naphthenic acids (NAs), the carboxylic acids in petroleum, are of emerging concern as they contaminate coastlines after oil spills and aquatic ecosystems of the Athabasca oil sands area. They are acutely toxic in fish and tadpoles and possibly endocrine disrupting at sublethal levels. I characterized courtship behaviours and disruption by NAs in the Western clawed frog, Silurana tropicalis. Courtship primarily consists of males producing low trills and achieving amplexus, a mating position where a male clasps a female. Adult frogs were exposed for five days to 20 mg/L NA, a dose low enough to not affect physical activity. In males, absolute calling activity was reduced. Other acoustic parameters such as dominant frequency, click rate, and trill length were not affected. Injecting human chorionic gonadotropin had a slight rescue effect. Vocalization and amplexus were both inhibited after exposure and restored after 2 weeks of recovery. However, calling behaviour did not predict competitive ability or mating success. In females, NA exposure reduced mating success, possibly through decreased attractiveness or receptivity. Receptivity can be indicated by attraction towards the sound of mating calls (phonotaxis), which is cryptic and subjective. I created an apparatus that measures phonotaxis by placing speakers inside traps with infrared lights to detect the time of entry. This novel method is widely applicable for low-visibility observations and studies of choice and preference. This work shows that an aquatic contaminant can reduce mating success in otherwise healthy frogs, and provides a detailed foundation for further investigation.
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Jauseau, Nicolas. "Multiphase Flow Effects on Naphthenic Acid Corrosion of Carbon Steel." Ohio University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1354149810.

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Rocker, Austin Edwin. "Modeling atmospheric radon removal rate by naphthenic oil." Thesis, Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/18926.

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Misiti, Teresa Marie. "Fate and effect of naphthenic acids in biological systems." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/45796.

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Naphthenic acids (NAs) are carboxylic acids found in crude oil and petroleum products. The objectives of the research presented here were to: a) assess the occurrence and fate of NAs in crude oil and refinery wastewater streams; b) evaluate the biotransformation potential and inhibitory effects of NAs under nitrifying, denitrifying and methanogenic/fermentative conditions; c) investigate the factors affecting NA biotransformation under aerobic conditions and the microbes involved; and d) assess the toxicity of individual model NAs using quantitative structure-activity relationships (QSAR) and examine the effect of structure on NA biotransformation potential. NAs are ubiquitous in refinery wastewater streams and the desalter brine was found to be the main source of NAs in refinery wastewater. A commercial NA mixture was not biodegraded under nitrate-reducing or methanogenic/fermentative conditions. NAs were degraded under aerobic conditions by an NA-enriched culture; however, a residual fraction was not degraded under all conditions studied. The results indicated that NAs are not inherently recalcitrant and the residual fraction was due to the individual NA concentrations being below the minimum substrate concentrations at which they are no longer degraded. A fraction of the NA mixture was completely mineralized to carbon dioxide, with the remaining portion biotransformed to more oxidized intermediates. Overall, the results indicated that NAs were degraded under aerobic conditions; however, biological treatment of NA-bearing wastewater will not completely remove NA concentrations and thus, biological treatment must be combined with physical/chemical treatment to achieve complete NA removal.
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Nodwell, Maximilian. "On the interactions between naphthenic acids and inorganic minerals." Thesis, University of British Columbia, 2011. http://hdl.handle.net/2429/36740.

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Naphthenic acids are a family of carboxylic acids that are found in oil sands bitumen. These compounds partition to the aqueous phase during extraction and refining and are toxic to various biota. The removal of these acids from solution is difficult due to their low concentrations, complexity of the mixture and poor understanding of the behaviour of the mixed compounds. In particular, partitioning of these organic acids to solid surfaces is not well understood. Knowledge of this equilibria would be helpful for potential process development. The research presented here describes the adsorption of two surrogate naphthenic acids onto inorganic minerals (copper sulphide and copper hydroxide). Decanoic acid and cyclohexane pentanoic acid were found to be insoluble in water at pH 3, leading to hydrophobic adsorption onto the minerals and the reaction vessel surfaces. At pH 8.5, both acids formed insoluble copper-carboxylate complexes when mixed with the minerals. The hypothesized 2:1 acid:copper stoichiometry was confirmed. The mechanism of complexation varied with the reaction conditions; both chelating and bridging complexes were observed in the resultant metallo-organic solids. The relative hydrophobicity of the two NA surrogates was also found to contribute to the different adsorption trends. During the pH 8.5 reactions, the solution pHs were found to drop. The uncontrolled decreases in pH had significant effect on the water-solid partition and on the apparent mineral loading of the organics. It appears that soluble copper cations have a higher extent of reaction with the carboxylate anions than does copper contained in the mineral solids. Quantification of these reactions is difficult; however this research does enable conclusions about how the organic acids and inorganic minerals interact and sets the stage for future research.
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Books on the topic "Naphthoic acid"

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Nii͡azov, A. N. Naftenaty. Ashkhabad: Ylym, 1992.

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Turner, Richard. Iron complexes of 1-Nitroso-2-Naphthol-3,6-Disulphonic Acid Disodium Salt. 1986.

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Book chapters on the topic "Naphthoic acid"

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Gooch, Jan W. "Naphthenic Acid." In Encyclopedic Dictionary of Polymers, 478. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_7781.

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Skeels, Karl, and Corinne Whitby. "Microbial Ecology of Naphthenic Acid (NA) Degradation." In Microbial Communities Utilizing Hydrocarbons and Lipids: Members, Metagenomics and Ecophysiology, 285–306. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-14785-3_5.

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Skeels, Karl, and Corinne Whitby. "Microbial Ecology of Naphthenic Acid (NA) Degradation." In Microbial Communities Utilizing Hydrocarbons and Lipids: Members, Metagenomics and Ecophysiology, 1–22. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-60063-5_5-1.

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Mandal, P. C., N. F. B. Salleh, and D. Ruen-ngam. "Total Acid Number Reduction in Naphthenic Acids Using Ionic Liquid-Assisted Hot Water." In ICIPEG 2016, 697–707. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-3650-7_60.

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Adenugba, Adeola, John V. Headley, Kerry Peru, and Dena McMartin. "Naphthenic Acids Environmental Occurrence and Chromatographic Analysis." In Chromatographic Analysis of the Environment, 537–52. Fourth edition / edited by Leo M. L. Nollet and Dimitra Lambropoulou. | Boca Raton, FL : CRC Press, [2017]: CRC Press, 2017. http://dx.doi.org/10.1201/9781315316208-18.

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Adenugba, Adeola, John Headley, Kerry Peru, and Dena McMartin. "Naphthenic Acids Environmental Occurrence and Chromatographic Analysis." In Chromatographic Analysis of the Environment, 537–52. Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2017. http://dx.doi.org/10.1201/9781315316208-24.

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Jin, Peng, Winston Robbins, Gheorghe Bota, and Srdjan Nesic. "Characterization of Iron Oxide Scale Formed in Naphthenic Acid Corrosion." In Characterization of Minerals, Metals, and Materials 2016, 115–25. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781119263722.ch14.

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Jin, Peng, Winston Robhins, Gheorghe Bota, and Srdjan Nesic. "Characterization of Iron Oxide Scale Formed in Naphthenic Acid Corrosion." In Characterization of Minerals, Metals, and Materials 2016, 117–25. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-48210-1_14.

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Brown, Lisa, and Ania Ulrich. "Protocols for Measurement of Naphthenic Acids in Aqueous Samples." In Springer Protocols Handbooks, 201–16. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/8623_2015_88.

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Winkelmann, Jochen. "Diffusion coefficient of 1-amino-2-naphthol-4-sulfonic acid in water." In Diffusion in Gases, Liquids and Electrolytes, 1319. Berlin, Heidelberg: Springer Berlin Heidelberg, 2018. http://dx.doi.org/10.1007/978-3-662-54089-3_886.

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Conference papers on the topic "Naphthoic acid"

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Lyu, Yunrong. "The Effect Mechanism of Hydrodynamic Factors on Naphthenic Acid Flow-Induced Corrosion." In ASME 2019 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/pvp2019-93426.

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Abstract Hydrodynamic factors are the important factors affecting the flow-induced corrosion of naphthenic acid. The effect mechanisms of hydrodynamic factors such as flow velocity, flow pattern, erosion angle and multiphase flow, etc. on the flow-induced corrosion of naphthenic acid are analyzed comprehensively, and the effect mechanisms of critical hydrodynamic parameters such as surface shear stress and near-wall turbulence intensity, etc. on naphthenic acid corrosion are explained. It is pointed out that in the flow-induced corrosion system of naphthenic acid, hydrodynamic factors such as flow velocity, flow pattern, erosion angle and multiphase flow, etc. influence the erosion intensity and mass transfer process generally by changing the magnitude of surface shear stress and near-wall turbulence intensity, thus affecting the severity of corrosion.
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Zafar, Faisal, Pradip Chandra Mandal, Ku Zilati bt Ku Shaari, and Saad Nadeem. "Total acid number reduction kinetics of naphthenic acids using non-catalytic subcritical methanol." In THE 2ND INTERNATIONAL CONFERENCE ON APPLIED SCIENCE AND TECHNOLOGY 2017 (ICAST’17). Author(s), 2017. http://dx.doi.org/10.1063/1.5005481.

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Jiang, Ke, Xuedong Chen, Tiecheng Yang, and Zongchuan Qin. "Experiment Study of High-Temperature and High-Flow Rate Naphthenic Acid Corrosion." In ASME 2011 Pressure Vessels and Piping Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/pvp2011-57640.

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The corrosion behaviors of 321 and 316L austenitic stainless steel in high-temperature and high-flow rate naphthenic acid medium were investigated by pipe-flow and jet-impingement method. The influence of temperature and erosion angle on naphthenic acid corrosion resistance for stainless steel was analyzed. The results indicate that the naphthenic acid corrosion rate increased with increasing temperature and velocity. At the same temperature, the corrosion rate at 90° erosion angle is greater than that at 0°. The present experimental results are very close to those in API 581. Simulation results indicate that, where the mutation of flow direction occurs around the specimen, the near-wall turbulence intensities are very large by both experimental methods. Moreover, by comparing both the simulation and experimental results, it can be found that the naphthenic acid corrosion is very severe in areas of high turbulence.
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Mediaas, Heidi, Nick O. Wolf, Thomas David Baugh, Knut V. Grande, and Jens Emil Vinstad. "The Discovery of High Molecular Weight Naphthenic Acids (ARN Acid) Responsible for Calcium Naphthenate Deposits." In SPE International Symposium on Oilfield Scale. Society of Petroleum Engineers, 2005. http://dx.doi.org/10.2118/93011-ms.

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Afzal, Atefeh, Przemysław Drzewicz, Mohamed Gamal El-Din, and Jonathan W. Martin. "Decomposition of a Model Naphthenic Acid, Cyclohexanoic Acid by Advanced Oxidation Processes." In Environmental Management and Engineering / Unconventional Oil. Calgary,AB,Canada: ACTAPRESS, 2011. http://dx.doi.org/10.2316/p.2011.731-020.

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Lv, Yunrong, Xuedong Chen, and Zhiping Chen. "Research Progress of High Temperature Naphthenic Acid Corrosion Rules and Prevention Methods in Petrochemical Plants." In ASME 2017 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/pvp2017-65709.

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Naphthenic acid corrosion is a kind of corrosion state that occurs frequently in the high temperature locations of the petroleum distillation and secondary processing units. It is the main factor influencing the long-cycle safe operation of petrochemical plants, and also one of the hottest issues to be solved urgently in the petroleum refining industry. This paper overviewed the research progress related to high temperature naphthenic acid corrosion including the mechanisms, influencing factors, test and controlling methods; analyzed the engineering problems in the processing of high acid crude oil, pointed out the shortcomings of current research methods, and proposed the future research suggestions on the corrosion rules and prevention methods.
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Wang, Lei, Huifeng Li, Ju Liu, Yu Zhou, and Sixian Rao. "Influence of Turbulence on Naphthenic Acid Corrosion of SA210C." In 2015 International Conference on Materials, Environmental and Biological Engineering. Paris, France: Atlantis Press, 2015. http://dx.doi.org/10.2991/mebe-15.2015.68.

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Li, Huifeng, Sihong Rao, Lei Wang, Yu Zhou, and Sixian Rao. "Naphthenic Acid Corrosion of 20G under High Flow Rate Flushing." In 2015 International Conference on Materials, Environmental and Biological Engineering. Paris, France: Atlantis Press, 2015. http://dx.doi.org/10.2991/mebe-15.2015.67.

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Xu, Feifei, Libing Zhang, Ju Liu, Yu Zhou, and Sixian Rao. "Influence of turbulence on Naphthenic Acid Corrosion of A335-P5." In 2015 International Conference on Materials, Environmental and Biological Engineering. Paris, France: Atlantis Press, 2015. http://dx.doi.org/10.2991/mebe-15.2015.69.

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Mohammed, Murtala Ahmed, and Kenneth S. Sorbie. "Spectroscopic Determination of Naphthenic Acid Composition From Various Calcium Naphthenates Field Deposits." In SPE International Symposium on Oilfield Chemistry. Society of Petroleum Engineers, 2009. http://dx.doi.org/10.2118/121633-ms.

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Reports on the topic "Naphthoic acid"

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Aihua Zhang, Qisheng Ma, Kangshi Wang, Yongchun Tang, and William A. Goddard. Improved Processes to Remove Naphthenic Acids. Office of Scientific and Technical Information (OSTI), December 2005. http://dx.doi.org/10.2172/881034.

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Aihua Zhang, Qisheng Ma, William A. Goddard, and Yongchun Tang. IMPROVED PROCESSES TO REMOVE NAPHTHENIC ACIDS. Office of Scientific and Technical Information (OSTI), April 2004. http://dx.doi.org/10.2172/825290.

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Aihua Zhang, Qisheng Ma, and William A. Goddard, Yongchun Tang Kangshi Wang. IMPROVED PROCESSES TO REMOVE NAPHTHENIC ACIDS. Office of Scientific and Technical Information (OSTI), May 2005. http://dx.doi.org/10.2172/840354.

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