Academic literature on the topic 'Hydrocarbons Aliphatic compounds'

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Journal articles on the topic "Hydrocarbons Aliphatic compounds"

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Doley, Ruby, and Manoj Barthakur. "Biotransformation of aromatic hydrocarbon: Naphthalene to Aliphatic Hydrocarbons through Staphylococcus pasteuri RD2." Annals of Plant Sciences 7, no. 5 (April 30, 2018): 2247. http://dx.doi.org/10.21746/aps.2018.7.5.7.

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Aromatic hydrocarbons like naphthalene are common environmental pollutants of petrochemical waste. Microorganisms have been exploited since long back to clean up such pollutants by converting them in to either non- toxic or less toxic aromatic or aliphatic compounds. A bacterial strain have been isolated from oil sludge of Guwahati Refinery, Assam and was identified as Staphylococcus pasteuri RD2 (NCBI accession number MG680735) through 16srDNA sequence analysis and molecular phylogeny. The bacterial strain transforms Naphthalene, a common hazardous aromatic hydrocarbon found in petrochemical waste, into a number of less hazardous aliphatic hydrocarbons. Detection of compounds such as Decane, Dodecane, tetradecane, Hexadecane, Eicosane, and heptane by GC-MS analysis of naphthalene enrichment culture broth suggested that the bacterial strain was able to transform naphthalene in to different aliphatic hydrocarbons with less toxicity and having chain length of C7 to C20. It has also been depicted a pathway to obtain aliphatic hydrocarbons with higher caloric value from aromatic hydrocarbon waste.
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April, T. M., J. M. Foght, and R. S. Currah. "Hydrocarbon-degrading filamentous fungi isolated from flare pit soils in northern and western Canada." Canadian Journal of Microbiology 46, no. 1 (December 17, 1999): 38–49. http://dx.doi.org/10.1139/w99-117.

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Sixty-four species of filamentous fungi from five flare pits in northern and western Canada were tested for their ability to degrade crude oil using gas chromatographic analysis of residual hydrocarbons following incubation. Nine isolates were tested further using radiorespirometry to determine the extent of mineralization of model radiolabelled aliphatic and aromatic hydrocarbons dissolved in crude oil. Hydrocarbon biodegradation capability was observed in species representing six orders of the Ascomycota. Gas chromatography indicated that species capable of hydrocarbon degradation attacked compounds within the aliphatic fraction of crude oil, n-C12- n-C26; degradation of compounds within the aromatic fraction was not observed. Radiorespirometry, using n-[1-14C]hexadecane and [9-14C]phenanthrene, confirmed the gas chromatographic results and verified that aliphatic compounds were being mineralized, not simply transformed to intermediate metabolites. This study shows that filamentous fungi may play an integral role in the in situ biodegradation of aliphatic pollutants in flare pit soils.Key words: bioremediation, filamentous fungi, flare pits, hydrocarbon degradation, petroleum.
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Parinos, C., A. Gogou, I. Bouloubassi, R. Pedrosa-Pàmies, I. Hatzianestis, A. Sànchez-Vidal, G. Rousakis, D. Velaoras, G. Krokos, and V. Lykousis. "Occurrence, sources and transport pathways of natural and anthropogenic hydrocarbons in deep-sea sediments of the Eastern Mediterranean Sea." Biogeosciences Discussions 9, no. 12 (December 13, 2012): 17999–8038. http://dx.doi.org/10.5194/bgd-9-17999-2012.

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Abstract. Surface sediments collected from deep basins (22 stations, 1018–4087 m depth) of the Eastern Mediterranean Sea (EMS) were analyzed for aliphatic, triterpenoid and polycyclic aromatic hydrocarbons (PAHs) as tracers of natural and anthropogenic inputs. Concentrations of total aliphatic hydrocarbons (TAHC), n-alkanes (NA) and the Unresolved Complex Mixture (UCM) of aliphatic hydrocarbons ranged from 1.34 to 49.2 µg g−1, 145 to 4810 ng g−1 and 0.73 to 36.7 µg g−1, respectively, while total PAHs (TPAH25) concentrations ranged from 11.6 to 223 ng g−1. Molecular profiles of aliphatic hydrocarbons and PAHs reflect the contribution of both natural (epicuticular plant waxes) and anthropogenic (degraded petroleum products, unburned fossil fuels and combustion of petroleum, grass, wood and coal) compounds in deep EMS sediments, with hydrocarbon mixtures displaying significant regional variability. Hydrocarbon concentrations correlated significantly with the Total Organic Carbon (TOC) content of sediments, indicating that organic carbon exerts an important control on their transport and fate in the study area, while strong sub-basin and mesoscale variability of water masses also impact their regional characteristics. Major findings of this study support that deep basins/canyons of the EMS could act as traps of both natural and anthropogenic hydrocarbons.
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Pattanayak, Rojalin, Geetanjali Mishra, Chandan Singh Chanotiya, Prasant Kumar Rout, Chandra Sekhar Mohanty, and Omkar. "Semiochemical profile of four aphidophagous Indian Coccinellidae (Coleoptera)." Canadian Entomologist 148, no. 2 (August 3, 2015): 171–86. http://dx.doi.org/10.4039/tce.2015.45.

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AbstractThe emitted aliphatic hydrocarbon profile of four Indian Coccinellidae (Coleoptera), Coccinella septempunctata (Linnaeus) (C7), Coccinella transversalis Fabricius (Ct), Menochilus sexmaculatus (Fabricius) (Ms), and Propylea dissecta (Mulsant) (Pd) has been investigated by simple solvent-less headspace solid-phase microextraction (HS-SPME) technique coupled with gas chromatography and mass spectroscopy (GC-MS). Identified volatile and non-volatile compounds were confirmed by running corresponding standards and comparing with the National Institute of Standards and Technology library. Among the 56 identified aliphatic hydrocarbons, saturated aliphatic hydrocarbons were more in number than unsaturated ones. Among saturated hydrocarbons, methyl branched hydrocarbons were more in number in C7 and Ct than Ms and Pd. Menochilus sexmaculatus and Pd had higher percentages of unsaturated hydrocarbons than C7 and Ct. Among branched chain-hydrocarbons, mono-methylated saturated hydrocarbons were more in number than dimethylated saturated hydrocarbons. Further analysis of the semiochemical profile revealed a closeness between C7 and Ct, and between Ms and Pd. Quantitative analysis revealed that straight chain hydrocarbons form separate clusters to branched chain methylated hydrocarbons. This is the first attempt to identify the semiochemical profile of some Indian coccinellids using the headspace solid phase micro-extraction technique coupled with the gas chromatography-mass spectrometry technique. This report will be helpful for various chemotaxonomic studies of the species in the future.
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Darılmaz, Enis. "Investigation of aliphatic hydrocarbons in red mullet (Mullus barbatus) and European hake (Merluccius merluccius) fish caught from the Edremit Bay (Western Turkey)." Ege Journal of Fisheries and Aquatic Sciences 38, no. 1 (March 15, 2021): 1–10. http://dx.doi.org/10.12714/egejfas.38.1.01.

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In this study, aliphatic hydrocarbon levels were investigated in red mullet and european hake fish caught by trawler from Edremit Bay (Western Aegean, Turkey) in spring and autumn 2015. For this purpose, trawling was carried out from 3 different regions of the Edremit Bay in both seasons. As a result of the analyzes, total aliphatic hydrocarbon (TAH) levels in red mullet were found to be higher than that of european hake. TAH concentrations found for red mullet were in the range of 456-2090 ng/g, while it was found in the range of 61-746 ng/g for european hake. In general, TAH concentrations in red mullet were higher than that of european hake for both seasons. In addition, EOM amounts were found higher in red mullet like TAH. According to correlation, cluster and primary component analysis results, it was observed that the compounds affecting TAH levels in red mullet are C11 and C12 aliphatic hydrocarbon compounds, while european hake have C15, C17 and Pristane compounds. These results indicate that the source of aliphatic hydrocarbons in Edremit Bay fish is biogenic in european hake samples, although not exact, it may be petrogenic in red mullet samples.
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Smith, B. V. "Chapter 5. Aliphatic compounds. Part (i) Hydrocarbons." Annual Reports Section "B" (Organic Chemistry) 82 (1985): 91. http://dx.doi.org/10.1039/oc9858200091.

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Smith, B. V. "Chapter 5. Aliphatic compounds. Part (i) Hydrocarbons." Annual Reports Section "B" (Organic Chemistry) 83 (1986): 77. http://dx.doi.org/10.1039/oc9868300077.

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Smith, B. V. "Chapter 5. Aliphatic compounds. Part (i) Hydrocarbons." Annual Reports Section "B" (Organic Chemistry) 84 (1987): 93. http://dx.doi.org/10.1039/oc9878400093.

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Thomas, S. E. "Chapter 5. Aliphatic compounds. Part (i) Hydrocarbons." Annual Reports Section "B" (Organic Chemistry) 85 (1988): 85. http://dx.doi.org/10.1039/oc9888500085.

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Hill, L., and S. E. Thomas. "Chapter 5. Aliphatic compounds. Part (i) Hydrocarbons." Annual Reports Section "B" (Organic Chemistry) 86 (1989): 87. http://dx.doi.org/10.1039/oc9898600087.

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Dissertations / Theses on the topic "Hydrocarbons Aliphatic compounds"

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Therrien, Annamarie F. "Degradation of Chlorinated Hydrocarbons in Groundwater Passing Through the Treatment Wetland at Wright-Patterson Air Force Base: Analysis of Results Collected During 2001-'06." Wright State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=wright1363477561.

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Tibui, Aloysius. "Biodegradation of Aliphatic Chlorinated Hydrocarbon (PCE, TCE and DCE) in Contaminated Soil." Thesis, Linköping University, The Tema Institute, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-7908.

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Soil bottles and soil slurry experiments were conducted to investigate the effect of some additives on the aerobic and anaerobic biodegradation of chlorinated aliphatic hydrocarbons; tetrachloroethylene (PCE), trichloroethylene (TCE) and dichloroethylene (DCE) in a contaminated soil from Startvätten AB Linköping Sweden. For the aerobic degradation study the soil sample was divided into two groups, one was fertilised. The two groups of soil in the experimental bottles were treated to varying amount of methane in pairs. DCE and TCE were added to all samples while PCE was found in the contaminated soil. Both aerobic and anaerobic experiments were conducted. For aerobic study air was added to all bottles to serve as electron acceptor (oxygen). It was observed that all the samples showed a very small amount of methane consumption while the fertilised soil samples showed more oxygen consumption. For the chlorinated compounds the expected degradation could not be ascertained since the control and experimental set up were more or less the same.

For the anaerobic biodegradation study soil slurry was made with different media i.e. basic mineral medium (BM), BM and an organic compound (lactate), water and sulphide, phosphate buffer and sulphide and phosphate buffer, sulphide and ammonia. To assure anaerobic conditions, the headspace in the experimental bottles was changed to N2/CO2. As for the aerobic study all the samples were added DCE and TCE while PCE was found in the contaminated soil. The sample without the soil i.e. the control was also given PCE. It was observed that there was no clear decrease in the GC peak area of the pollutants in the different media. The decrease in GC peak area of the pollutants could not be seen, this may be so because more susceptible microorganisms are required, stringent addition of nutrients and to lower the risk of the high concentration of PCE and petroleum products in the soil from Startvätten AB.

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Smith, Madelyn M. "Cometabolic Degradation of Halogenated Aliphatic Hydrocarbons by Aerobic Microorganisms Naturally Associated with Wetland Plant Roots." Wright State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=wright1341854406.

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Denise, Bertrand. "Etude par spectrométrie neutronique de la phase à désordre d'orientation du néopentane et du perchlorate de potassium." Paris 6, 1986. http://www.theses.fr/1986PA066342.

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Utilisation du formalisme des fonctions adaptées à la symétrie pour développera les différentes densités de probabilité intéressant les cristaux à désordre d'orientation. Obtention des sections efficaces de diffusion neutronique en fonction d'un petit nombre de coefficients independants, reflétant les propriétés de symétrie du cristal et de la molécule. Application à l'analyse des facteurs de structure de diffraction de monocristaux de néopentane et de perchlorate de potassium.
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Chakir, Abdelkhaleq. "Etude cinetique et modelisation du mecanisme d'oxydation a haute temperature de n-butane et de 1-butene." Paris 6, 1988. http://www.theses.fr/1988PA066132.

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L'etude experimentale de l'oxydation du butane et du butene-1 a ete effectuee en reacteur auto-agite par jets gazeux dans un large domaine de conditions experimentales (900-1200 k, 1 a 10 atm, rapports d'equivalents oxygene-hydrocarbure 0,1-4)
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Muller, Michel. "Etude de reactions d'isomerisation, de cracking et d'alkylation d'hydrocarbures en presence de divers superacides." Université Louis Pasteur (Strasbourg) (1971-2008), 1986. http://www.theses.fr/1986STR13022.

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Chemla, Philippe. "Reactions diastereospecifiques de dienones fer-tricarbonyle : applications a la synthese d'alcools fonctionnalises optiquement purs." Université Louis Pasteur (Strasbourg) (1971-2008), 1988. http://www.theses.fr/1988STR13049.

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La methode de synthese utilisee permet d'acceder avec de bons rendements, a des composes de haute purete optique et de configuration donnee: alpha et gamma aldols et une delta -lactone fonctionnalisee en position 5. Des hydrocarbures optiquement actifs dont le centre asymetrique est eloigne de toute fonction, ont egalement ete synthetises par cette voie
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Åkerblom, Denize, and Erik Göranzon. "Greener Water Repellency? Feasible alternatives to fluoro chemicals for DWOR treatments on textiles." Thesis, Högskolan i Borås, Institutionen Textilhögskolan, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-17695.

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BACKGROUND: Perfluorinated compounds (PFCs) have been used as durable water and oil repellent treatments in clothing for more than 50 years. The reason for its popularity is related to the chemical structure, which also makes these compounds persistent in the environment. Numerous studies have shown negative environmental and health effects related to high concentrations of perfluorinated compounds in blood serum. Due to these studies, this paper aimed to find out if perfluorinated compounds could be replaced by non-perfluorinated without compromising performance related to water and oil repellency. METHODOLOGY: A reference sample impregnated with fluorocarbons was compared with the following non-perfluorinated treatments, aliphatic polyurethane (comb polymer) organic silicone and acid (comb polymer) and hydrocarbon (dendrimer). Impregnations were subjected to abrasion, UV-radiation and washing and after each destructive treatment; oil and water repellency tests were conducted. The environmental and health effect of all treatments were examined in a theoretical study. RESULTS: Due to difficulties with the impregnation process, comparable results could only be concluded with the perfluorinated and the hydrocarbon compound. The hydrocarbon was superior the perfluorinated compound to abrasion but for usage simulation methods that allowed chemical reactions, hence UV-radiation and washing, the fluorocarbons showed better resistance. CONCLUSION: Results show that the hydrocarbon treatment could replace perfluorinated treatments commercially when only water and not oil repellency is required. The alternative treatments in this study are not yet sufficiently examined with respect to environmental and health and can therefore not be called greener with certainty.
Program: Textilingenjörsutbildningen
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Zyade, Souâd. "Contribution a l'etude des mecanismes de reactions des hydrocarbures sur catalyseurs mono et bimetalliques (pt et pt::(x)co::(1-x)) : correlation avec des taux en residus hydrocarbones et les structures metalliques de surface." Université Louis Pasteur (Strasbourg) (1971-2008), 1987. http://www.theses.fr/1987STR13034.

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Hadj, Romdhane Youssef. "Hydrogenolyse du n-butane sur des catalyseurs modeles au nickel : influence du facteur electronique." Paris 6, 1986. http://www.theses.fr/1986PA066556.

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Books on the topic "Hydrocarbons Aliphatic compounds"

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Sandford, Scott A. The galactic distribution of aliphatic hydrocarbons in the diffuse interstellar medium. [Washington, D.C: National Aeronautics and Space Administration, 1995.

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Sandford, Scott A. The galactic distribution of aliphatic hydrocarbons in the diffuse interstellar medium. [Washington, D.C: National Aeronautics and Space Administration, 1995.

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Kim, Young. Aerobic cometabolism of chlorinated aliphatic hydrocarbons by a butane-grown mixed culture: Transformation abilities, kinetics and inhibition. 2000.

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Tovanabootr, Adisorn. Aerobic cometabolism of chlorinated aliphatic hydrocarbons by subsurface microbes grown on methane, propane and butane from the McCellan Air Force Base. 1997.

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Sainsbury, Malcolm. Second Supplements to the 2nd Edition of Rodd's Chemistry of Carbon Compounds : Aliphatic Compounds : Monocarbonyl Derivatives of Aliphatic Hydrocarbons, ... Chemistry of Carbon Compounds 2nd Edition). Elsevier Publishing Company, 1992.

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Sainsbury, Malcolm. Second Supplements to the 2nd Edition of Rodd's Chemistry of Carbon Compounds : Aliphatic Compounds : Part A: Hydrocarbons (Alkanes, Alkenes, Alkynes, ... Chemistry of Carbon Compounds 2nd Edition). Elsevier Science Ltd, 1991.

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(Contributor), R. C. Wilhoit, K.N. Marsh (Contributor, Editor), X. Hong (Contributor), N. Gadalla (Contributor), and M. Frenkel (Contributor), eds. Densities of Aliphatic Hydrocarbons: Alkenes, Alkadienes, Alkynes, and Miscellaneous Compounds (Numerical Data and Functional Relationships in Science and Technology , Vol 8). Springer, 1996.

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Fawcett, Kimberly A. Effects of chlorinated aliphatic hydrocarbon degradation on the metabolic enzymes in Nitrosomonas europaea. 1999.

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Book chapters on the topic "Hydrocarbons Aliphatic compounds"

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Drabowicz, J., P. Kiełbasiński, P. Łyżwa, M. Mikołajczyk, and A. Zając. "Reaction of Phosphorus Trihalides with Aliphatic Hydrocarbons." In Organophosphorus Compounds (incl. RO-P and RN-P), 1. Georg Thieme Verlag KG, 2009. http://dx.doi.org/10.1055/sos-sd-042-00777.

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Chaurasia, Pankaj Kumar, Shashi Lata Bharati, and Ashutosh Mani. "Enzymatic Treatment of Petroleum-Based Hydrocarbons." In Handbook of Research on Microbial Tools for Environmental Waste Management, 396–408. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-3540-9.ch019.

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Petroleum and petroleum-based products are highly beneficial for our daily life system. Functioning of several industries and machineries directly depends on different forms of petroleum. There are strong possibilities of the release of such petroleum and petroleum-based compounds like aliphatic as well as aromatic hydrocarbons during their refining process, usage, storage, transport, and other activities due to the accidents, leakages, or just a little lack of awareness. Their exposure to soils or water causes serious problems for aquatic as well as human beings. The efficient removal or detoxification of such pollutants is the demand of the present time. The use of microbial sources for the bioremediation of such petroleum wastes may be promising technique because it does not require any drastic conditions for detoxification process and by-products produced by them are also harmless unlike chemical and other techniques. In this regard, this chapter discusses the enzymatic role in detoxification or bioremediation of petroleum-based hydrocarbons.
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Tsuchiya, S., S. Sakai, M. Kikugawa, T. Mitsuno, and Y. Sakata. "Shape-Selectivity of Alkali Metals Graphite Intercalation Compounds for Catalytic Isomerization, Hydrogenation and Alkylation of Aliphatic and Aromatic Hydrocarbons." In Studies in Surface Science and Catalysis, 2185–88. Elsevier, 1993. http://dx.doi.org/10.1016/s0167-2991(08)64256-1.

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Conference papers on the topic "Hydrocarbons Aliphatic compounds"

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Lei, Hanwu, Shoujie Ren, James Julson, Lu Wang, Quan Bu, and Roger Ruan. "Microwave Torrefaction of Corn Stover and Tech-Economic Analysis." In ASME 2011 International Manufacturing Science and Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/msec2011-50230.

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Microwave torrefaction of corn stover with particle size of 4 mm was investigated and the effects of reaction temperature and time on the yields of volatile, bio-oil and torrefied biomass were determined. The response surface analysis of the central composite design (CCD) showed that the yields of volatile, bio-oil and torrefied biomass were significantly affected by the reaction temperature and time. Three linear models were developed to predict the yields of conversion products as a function of temperature and time. A first order reaction kinetics was also developed to model the corn stover torrefaction. Ph values of torrefaction bio-oils ranged from 2.3 to 2.76 which were similar to those of bio-oils from biomass pyrolysis. GC/MS analysis for torrefaction bio-oils showed that the organic acid was about 2.16% to 12.00%. The torrefaction bio-oils also contain valuable chemical compounds such as phenols, furan derivatives and aliphatic hydrocarbons determined by a GC/MS. There are no aromatic compounds and polycyclic aromatic hydrocarbons (PAHs) detected in the torrefaction bio-oils. The torrefaction biogas was mainly consisted of ch4, c2h6, c3h8, which was about 56 wt% of the total bio-gas. The biogas can be used for chemical synthesis or electricity generation. The heating values of torrefied biomass were from 18.64–22.22 MJ/kg depending on the process conditions. The heating values of torrefied biomass were significantly greater than those of raw biomass and similar to those of coals. The energy yields of torrefied biomass from 87.03–97.87% implied that most energy was retained in the torrefied biomass. Economic analysis indicated that the biomass microwave torrefaction plant located in a farm is profitable.
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