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Journal articles on the topic 'Aliphatic hydrocarbons'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Doley, Ruby, and Manoj Barthakur. "Biotransformation of aromatic hydrocarbon: Naphthalene to Aliphatic Hydrocarbons through Staphylococcus pasteuri RD2." Annals of Plant Sciences 7, no. 5 (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

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Stakėnienė, Rimutė, Kęstutis Jokšas, Rimantė Zinkutė, and Eva Raudonytė-Svirbutavičienė. "Oil pollution and geochemical hydrocarbon origin markers in sediments of the Curonian Lagoon and the Nemunas River Delta." Baltica 32, no. 1 (2019): 22–32. http://dx.doi.org/10.5200/baltica.2019.1.3.

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The continuous research on anthropogenized coastal zones determined qualitative and quantitative characteristics of aliphatic hydrocarbons in the Curonian Lagoon and the Nemunas River Delta. The concentration of aliphatic hydrocarbons varied from 9.1 to 187.6 μg g−1 d.w. The Curonian Lagoon could be classified as a slightly contaminated water basin with some moderately polluted areas, while both rivers and Lake Krokų Lanka were found to be slightly contaminated with aliphatic hydrocarbons. The prevailing unresolved complex mixture and geochemical markers suggested the existence of mixed biogen

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3

Draine, B. T., Karin Sandstrom, Daniel A. Dale, et al. "Detection of Deuterated Hydrocarbon Nanoparticles in the Whirlpool Galaxy, M51." Astrophysical Journal Letters 984, no. 2 (2025): L42. https://doi.org/10.3847/2041-8213/adc991.

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Abstract Deuteration of hydrocarbon material, including polycyclic aromatic hydrocarbons (PAHs), has been proposed to account for the low gas-phase abundances of D in the interstellar medium (ISM). JWST spectra of four star-forming regions in M51 show an emission feature, with central wavelength ∼4.647 μm and FWHM 0.0265 μm, corresponding to the C–D stretching mode in aliphatic hydrocarbons. The emitting aliphatic material is estimated to have (D/H)aliph. ≈0.17 ± 0.02—a factor of ∼104 enrichment relative to the overall ISM. On ∼50 pc scales, deuteration levels toward four H ii regions in M51 a

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4

Díaz-Ramírez, I. J., H. Ramírez-Saad, M. Gutiérrez-Rojas, and E. Favela-Torres. "Biodegradation of Maya crude oil fractions by bacterial strains and a defined mixed culture isolated from Cyperus laxus rhizosphere soil in a contaminated site." Canadian Journal of Microbiology 49, no. 12 (2003): 755–61. http://dx.doi.org/10.1139/w03-098.

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Ten bacterial strains were isolated by enrichment culture, using as carbon sources either aliphatics or an aromatic–polar mixture. Oxygen uptake rate was used as a criterion to determine culture transfer timing at each enrichment stage. Biodegradation of aliphatics (10 000 mg L–1) and an aromatic–polar mixture (5000 mg L–1, 2:1) was evaluated for each of the bacterial strains and for a defined culture made up with a standardized mixture of the isolated strains. Degradation of total hydrocarbons (10 000 mg L–1) was also determined for the defined mixed culture. Five bacterial strains were able

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Parinos, C., A. Gogou, I. Bouloubassi, et al. "Occurrence, sources and transport pathways of natural and anthropogenic hydrocarbons in deep-sea sediments of the Eastern Mediterranean Sea." Biogeosciences Discussions 9, no. 12 (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 hydroc

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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 (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 c

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Sloan, G. C. "Spitzer spectroscopy of unusual hydrocarbons in cool radiative environments." Proceedings of the International Astronomical Union 4, S251 (2008): 191–94. http://dx.doi.org/10.1017/s1743921308021534.

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AbstractThe Spitzer Space Telescope has discovered several objects with unusual spectra, where the emission features from polycyclic aromatic hydrocarbons (PAHs) are shifted to longer wavelengths than normally observed. Previously, only two of these class C PAH spectra had been identified. The new and larger sample reveals that PAHs emit at longer wavelengths when processed by cooler radiation fields. Limited laboratory data show that samples with mixtures of aromatic and aliphatic hydrocarbons produce emission features at longer wavelengths than purely aromatic samples. The aliphatic bonds ar

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Kotova, V. E., Yu А. Andreev, О. А. Mikhaylenko, and I. А. Ryazantseva. "ASSESSMENT OF PETROLEUM COMPONENT CONTAMINATION OF WATER IN THE TEMERNIK RIVER AND ITS INFLUENCE ON THE DON RIVER." Ecology. Economy. Informatics.System analysis and mathematical modeling of ecological and economic systems 1, no. 6 (2021): 112–17. http://dx.doi.org/10.23885/2500-395x-2021-1-6-112-117.

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Here, we report the results of petroleum component contamination assessment of the Temernik river and the Don river. Our aim was to study the hydrocarbon group content of petroleum components in the river water. Thus, we determined the mass concentrations of chemical oxygen demand, petroleum components, and aliphatic and polycyclic aromatic hydrocarbons. In the Temernik river, the concentrations of chemical oxygen demand, petroleum components, sum of aliphatic and polycyclic aromatic hydrocarbons were 21.4–34.4 mg/L, 0.14–6.0 mg/L, 10–18 μg/L, and 0.17–2.9 μg/L, respectively. The concentration

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9

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 (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. Am

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Wang, Xiaohua, Zhongchao Zhu, and Jianyou Zhao. "Subcritical Extraction of Coal Tar Slag and Analysis of Extracts and Raffinates." Applied Sciences 15, no. 5 (2025): 2694. https://doi.org/10.3390/app15052694.

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Coal is an important energy source for the development of modern society. The processing and utilization of coal have brought significant economic benefits for people, but at the same time, a large amount of coal-based solid waste is produced. Coal tar slag is one of the many types of solid waste. Coal tar slag contains a large number of PAHs (Polycyclic Aromatic Hydrocarbons) that are carcinogenic to humans and are therefore categorized as hazardous waste. There is a large historical stockpile of coal tar slag, and if not properly handled, it will cause great harm to people and the environmen

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11

Parinos, C., A. Gogou, I. Bouloubassi, et al. "Occurrence, sources and transport pathways of natural and anthropogenic hydrocarbons in deep-sea sediments of the eastern Mediterranean Sea." Biogeosciences 10, no. 9 (2013): 6069–89. http://dx.doi.org/10.5194/bg-10-6069-2013.

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Abstract. Surface sediments collected from deep basins (1018–4087 m depth) of the eastern Mediterranean Sea (Ionian Sea, southern Aegean Sea and northwestern Levantine Sea) were analyzed for aliphatic and polycyclic aromatic hydrocarbons as tracers of natural and anthropogenic inputs. Concentrations of total aliphatic hydrocarbons, n-alkanes and the unresolved complex mixture (UCM) of aliphatic hydrocarbons varied significantly, ranging 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 concentrations of total polycyclic aromatic hydrocarbons (PAHs) range

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12

Ohwovorione, Lucky, and Onoriode Emoyan. "CONCENTRATIONS AND ASSOCIATED RISK OF SELECTED ALIPHATIC HYDROCARBONS IN SEDIMENTS FROM RIVER ETHIOPE, SOUTHERN NIGERIA." Nigerian Journal of Science and Environment 22, no. 1 (2024): 194–207. http://dx.doi.org/10.61448/njse2212415.

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The contamination of aquatic ecosystems by hydrocarbon compounds poses severe environmental and human health concerns. Hence this study aimed to investigate the concentrations and associated risk of selected aliphatic hydrocarbons in sediments from the River Ethiope, an important water resource in Nigeria. A comprehensive sampling was conducted, collecting sediment samples at various locations (Umuaja, Obinoba, Abraka, Eku, Okpara, Aghalokpe, and Sapele) along the river. The samples were analyzed using gas chromatography (GC) to quantify the concentrations of hydrocarbons, with a specific focu

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NEMIROVSKAYA, I. A., P. O. ZAV’YALOV, A. V. KHRAMTSOVA, and B. V. KONOVALOV. "HYDROCARBON POLLUTION OF WATER AND BOTTOM SEDIMENTS IN COASTAL AREAS OF THE CAUCASIAN SECTOR OF THE BLACK SEA (2021, 2022)." Meteorologiya i Gidrologiya, no. 12 (December 2024): 85–97. https://doi.org/10.52002/0130-2906-2024-12-85-97.

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The current levels of aliphatic (20 μg/L, IR method) and polycyclic aromatic (90 ng/L, fluorescence method) hydrocarbons in suspended particulate matter of surface water and in bottom sediments have been determined in the coastal areas of the Caucasian sector of the Black Sea within the boundaries of the Russian Federation (in September 2021, May and September 2022). Despite the decrease in hydrocarbon concentrations in surface water over recent years, the Kerch Strait belongs to the most polluted area, as before. Accumulation of hydrocarbons occurs in bottom sediments, which leads to an incre

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14

Mirzoeva, Natalia Yu, Olga V. Soloveva, Yuliya V. Doroshenko, Elena A. Tikhonova, and Nataliya V. Burdiyan. "Assessment of Water Quality and Bottom Sediments of the North Crimean Canal Before the Launch of the Main Flow of Water by the Content of Hydrocarbons and Some Microbiological Indicators (Spring 2022, Crimean Peninsula)." UNIVERSITY NEWS. NORTH-CAUCASIAN REGION. NATURAL SCIENCES SERIES, no. 4 (December 27, 2023): 118–25. http://dx.doi.org/10.18522/1026-2237-2023-4-118-125.

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In the Spring 2014, the supply of Dnieper water to the North Crimean Canal (NCC) was stopped. The canal was previously used for centralized water supply and agriculture in the steppe part of Crimea. After 8 years, the active use of the Dnieper water in the Crimea requires comprehensive studies of its quality. Traditionally, microbiological studies are used to assess the ecological condition of water areas. In addition, it is important to monitor components of hydrocarbon origin such as aliphatic hydrocarbons. In general, the NCC waters by microbiological parameters (the number of heterotrophic

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15

Gómez-Coca, R. B., R. Cert, M. C. Pérez-Camino, and W. Moreda. "Determination of saturated aliphatic hydrocarbons in vegetable oils." Grasas y Aceites 67, no. 2 (2016): e127. http://dx.doi.org/10.3989/gya.0627152.

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Firrincieli, Andrea, Andrea Negroni, Giulio Zanaroli, and Martina Cappelletti. "Unraveling the Metabolic Potential of Asgardarchaeota in a Sediment from the Mediterranean Hydrocarbon-Contaminated Water Basin Mar Piccolo (Taranto, Italy)." Microorganisms 9, no. 4 (2021): 859. http://dx.doi.org/10.3390/microorganisms9040859.

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Increasing number of metagenome sequencing studies have proposed a central metabolic role of still understudied Archaeal members in natural and artificial ecosystems. However, their role in hydrocarbon cycling, particularly in the anaerobic biodegradation of aliphatic and aromatic hydrocarbons, is still mostly unknown in both marine and terrestrial environments. In this work, we focused our study on the metagenomic characterization of the archaeal community inhabiting the Mar Piccolo (Taranto, Italy, central Mediterranean) sediments heavily contaminated by petroleum hydrocarbons and polychlori

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Milan, Michela, Massimo Bietti, and Miquel Costas. "Enantioselective aliphatic C–H bond oxidation catalyzed by bioinspired complexes." Chemical Communications 54, no. 69 (2018): 9559–70. http://dx.doi.org/10.1039/c8cc03165g.

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Enantioselective aliphatic C–H bond oxidation simultaneously installs functionality and chirality into hydrocarbon units, converting in a single step readily available, inexpensive and typically inert hydrocarbons into precious building blocks for organic synthesis.

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18

Lee, Nahyeon, Junghee Joo, Kun-Yi Andrew Lin, and Jechan Lee. "Waste-to-Fuels: Pyrolysis of Low-Density Polyethylene Waste in the Presence of H-ZSM-11." Polymers 13, no. 8 (2021): 1198. http://dx.doi.org/10.3390/polym13081198.

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Herein, the pyrolysis of low-density polyethylene (LDPE) scrap in the presence of a H-ZSM-11 zeolite was conducted as an effort to valorize plastic waste to fuel-range chemicals. The LDPE-derived pyrolytic gas was composed of low-molecular-weight aliphatic hydrocarbons (e.g., methane, ethane, propane, ethylene, and propylene) and hydrogen. An increase in pyrolysis temperature led to increasing the gaseous hydrocarbon yields for the pyrolysis of LDPE. Using the H-ZSM-11 catalyst in the pyrolysis of LDPE greatly enhanced the content of propylene in the pyrolytic gas because of promoted dehydroge

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Payne, J. F., L. L. Fancey, J. Hellou, M. J. King, and G. L. Fletcher. "Aliphatic hydrocarbons in sediments: a chronic toxicity study with winter flounder (Pleuronectes americanus) exposed to oil well drill cuttings." Canadian Journal of Fisheries and Aquatic Sciences 52, no. 12 (1995): 2724–35. http://dx.doi.org/10.1139/f95-861.

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Most studies on the chronic toxicity of hydrocarbons have focused on the polycyclic aromatic component; however, information is also required on the chronic toxicity of other classes of hydrocarbons. This need has been brought to the forefront by the controversy about the use of aliphatic hydrocarbon-based drilling fluids at petroleum development sites in the marine environment. Dose–response relationships were studied for a variety of indices in a chronic toxicity study with winter flounder (Pleuronectes americanus) exposed to sediments contaminated with drill cuttings enriched in hydrocarbon

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Pandolfo, Emiliana, Anna Barra Caracciolo, and Ludovica Rolando. "Recent Advances in Bacterial Degradation of Hydrocarbons." Water 15, no. 2 (2023): 375. http://dx.doi.org/10.3390/w15020375.

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Hydrocarbons occur in fossil fuels such as crude oil and consist mainly of hydrogen and carbon. Although they are natural chemicals, crude oil refining results in commercial products with new physico-chemical properties, which can increase their complexity and toxicity, and hamper their degradation. The presence of biodiverse natural microbial communities is a prerequisite for an effective homeostatic response to the various hydrocarbons, that contaminate ecosystems. However, their removal depends on the compartment contaminated (water, sediment, soil), their molecular weight, and their toxici

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Feitkenhauer, H., and H. Märkl. "Biodegradation of aliphatic and aromatic hydrocarbons at high temperatures." Water Science and Technology 47, no. 10 (2003): 123–30. http://dx.doi.org/10.2166/wst.2003.0555.

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In this paper, the high temperature (65-75°C) biodegradation of aliphatic and aromatic hydrocarbons is investigated and kinetic parameters are derived. The shift of the physico-chemical system properties with rising temperature will be discussed in detail. For example, the solubility of naphthalene is increased by a factor of about ten if the temperature is increased from 20 to 75°C. This effect is essential to increase the bioavailability of sparingly soluble hydrocarbons. It is also demonstrated in experiments that very high oxygen transfer rates can be obtained at high temperatures in the p

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Schuhmann, M., K. Altwegg, H. Balsiger, et al. "Aliphatic and aromatic hydrocarbons in comet 67P/Churyumov-Gerasimenko seen by ROSINA." Astronomy & Astrophysics 630 (September 20, 2019): A31. http://dx.doi.org/10.1051/0004-6361/201834666.

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Context. Unlike all previous cometary space missions, the Rosetta spacecraft accompanied its target, comet 67P/Churyumov-Gerasimenko, for more than two years on its way around the Sun. Thereby, an unexpected diversity and complexity of the chemical composition was revealed. Aims. Our first step of decrypting the exact chemical composition of the gaseous phase is the identifying and quantifying the bulk composition of the pure aromatic and aliphatic hydrocarbons. Methods. For this study, data from ROSINA–Double Focusing Mass Spectrometer (DFMS) onboard the Rosetta spacecraft and the laboratory

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Asaftei, Iuliean V., Ion Sandu, Nicolae Bilba, Neculai Catalin Lungu, Maria Ignat, and Elvira Mahu. "Oligo-Aromatization of Light Hydrocarbons from Petroleum Refining Processes Over ZnO/MFI Microporous Material." Revista de Chimie 71, no. 2 (2020): 403–12. http://dx.doi.org/10.37358/rc.20.2.7943.

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The conversion of light hydrocarbons resulted as by-product of petroleum refining (mixtures of (n + i) butanes, 52.28 � 63.20 vol.%, (1-, cis-, trans-, 2-) butenes, 28.64 � 36.43 vol.% and propane � propylene, 4.79 � 14.64 vol.%) over bifunctional 5% ZnO/HZSM-5 co-catalyst in a fixed-bed stainless-steel reactor (Twin Reactor System Naky) at 450�C, 4 atm. total pressure and at a space velocity (WHSV) of 1 h-1 have been investigated. The results indicate that the selectivity to light aromatics � benzene, toluene and xylenes (BTX) � and to both the gaseous C1, C2 - C4 hydrocarbons and liquid (i +

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Shi, Zhen Jing, Meng Xiang Fang, Qing Hui Wang, and Zhong Yang Luo. "Studies on Rapid Pyrolysis Characteristics of Huainan Coal." Applied Mechanics and Materials 316-317 (April 2013): 32–35. http://dx.doi.org/10.4028/www.scientific.net/amm.316-317.32.

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This paper aims to investigate the rapid pyrolysis characteristics of Huainan coal using a tube furnace. Influence of temperature on yields and compounds of tar and char are tested. The result shows that aliphatic chains break gradually with increasing pyrolysis temperature. This leads an increase in aromaticity. Maximum tar yields were obtained at about 550°C, the char yields decreased and the gas yields increased with the pyrolysis temperature. The tar was isolated to aliphatic hydrocarbon aromatic hydrocarbon, non hydrocarbon and asphaltene, and characterized by chromatography-mass spectrom

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Habib, Syahir, Wan Lutfi Wan Johari, Mohd Yunus Shukor, and Nur Adeela Yasid. "Screening of hydrocarbon-degrading bacterial isolates using the redox application of 2,6-DCPIP." Bioremediation Science and Technology Research 5, no. 2 (2017): 13–16. http://dx.doi.org/10.54987/bstr.v5i2.358.

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Petroleum hydrocarbons remain as the major contaminants that could be found across the world. Remediation approach through the utilisation of microbes as the bioremediation means is widely recognised due to their outstanding values. As a result, scientific reports on the isolation and identification of new hydrocarbon-degrading strains were on the rise. Colourimetric-based assays are one of the fastest methods to identify the capability of hydrocarbon-degrading strains in both qualitative and quantitative assessment. In this study, the hydrocarbon-degrading potential of nine bacterial isolates

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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 (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 i

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Rocher, V., S. Azimi, R. Moilleron, and G. Chebbo. "Biofilm in combined sewers: wet weather pollution source and/or dry weather pollution indicator?" Water Science and Technology 47, no. 4 (2003): 35–43. http://dx.doi.org/10.2166/wst.2003.0215.

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In a sewer trunk, three kinds of deposit, acting as potential wet weather sources, can be found: the biofilm, the organic layer and the gross bed sediment. This research program, on the “Le Marais” catchment (Paris, France), focused on the biofilm. The objectives were to describe, using a Transmission Electronic Microscope, the architecture of the sewer biofilm and to investigate the contents and the distributions of aliphatic and aromatic hydrocarbons in biofilm. The electron micrographs illustrated a uniform film of bacteria totally covering the surface of a thick organic matrix. A large coh

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Wakchaure, Vijay N., William DeSnoo, Croix J. Laconsay, et al. "Catalytic asymmetric cationic shifts of aliphatic hydrocarbons." Nature 625, no. 7994 (2024): 287–92. http://dx.doi.org/10.1038/s41586-023-06826-7.

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AbstractAsymmetric catalysis is an advanced area of chemical synthesis, but the handling of abundantly available, purely aliphatic hydrocarbons has proven to be challenging. Typically, heteroatoms or aromatic substructures are required in the substrates and reagents to facilitate an efficient interaction with the chiral catalyst. Confined acids have recently been introduced as tools for homogenous asymmetric catalysis, specifically to enable the processing of small unbiased substrates1. However, asymmetric reactions in which both substrate and product are purely aliphatic hydrocarbons have not

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Acquah, F., A. T. Kuhn, and C. J. Mortimer. "The electrochlorination of aliphatic hydrocarbons." Journal of Applied Chemistry and Biotechnology 22, no. 11 (2007): 1195–200. http://dx.doi.org/10.1002/jctb.5020221107.

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Landry, Jean-François, and Serge Langlois. "Acute Exposure to Aliphatic Hydrocarbons." Archives of Internal Medicine 158, no. 16 (1998): 1821. http://dx.doi.org/10.1001/archinte.158.16.1821.

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Rosik-Dulewska, Czesława, Teresa Krzyśko-Łupicka, Tomasz Ciesielczuk, and Łukasz Kręcidło. "Hydrogen peroxide as a biodegradation stimulator in remediation processes of soils heavily contaminated with petrochemicals." Polish Journal of Chemical Technology 17, no. 2 (2015): 17–22. http://dx.doi.org/10.1515/pjct-2015-0023.

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Abstract The soil contaminated with petroleum products must be excluded from the crops and treated to reclamation processes. Natural processes of decomposition of hydrocarbon compounds go very slow, so it is necessary to use bioaugumentation or stimulation in order to accelerate the return of the soil to high culture. In this study the effect of hydrogen peroxide on the process of cleaning soil strongly contaminated with pertochemicals was investigated. For this purpose, a pot experiment lasting 60 days was carried. The dynamics of changes in the population of filamentous fungi, yeasts and bac

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Syed, Khajamohiddin, Aleksey Porollo, Ying Wai Lam, Paul E. Grimmett, and Jagjit S. Yadav. "CYP63A2, a Catalytically Versatile Fungal P450 Monooxygenase Capable of Oxidizing Higher-Molecular-Weight Polycyclic Aromatic Hydrocarbons, Alkylphenols, and Alkanes." Applied and Environmental Microbiology 79, no. 8 (2013): 2692–702. http://dx.doi.org/10.1128/aem.03767-12.

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ABSTRACTCytochrome P450 monooxygenases (P450s) are known to oxidize hydrocarbons, albeit with limited substrate specificity across classes of these compounds. Here we report a P450 monooxygenase (CYP63A2) from the model ligninolytic white rot fungusPhanerochaete chrysosporiumthat was found to possess a broad oxidizing capability toward structurally diverse hydrocarbons belonging to mutagenic/carcinogenic fused-ring higher-molecular-weight polycyclic aromatic hydrocarbons (HMW-PAHs), endocrine-disrupting long-chain alkylphenols (APs), and crude oil aliphatic hydrocarbonn-alkanes. A homology-bas

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Shoieb, Monera Adam, Haylay Tsegab Gebretsadik, Syed Muhammad Ibad, and Omeid Rahmani. "Depositional Environment and Hydrocarbon Distribution in the Silurian–Devonian Black Shales of Western Peninsular Malaysia Using Spectroscopic Characterization." Minerals 12, no. 12 (2022): 1501. http://dx.doi.org/10.3390/min12121501.

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The present study aimed to evaluate the hydrocarbon functional groups, aromaticity degree, and depositional environment in the Silurian–Devonian Kroh black shales of western peninsular Malaysia. Fourier transform infrared spectroscopy (FTIR) was applied to measure the hydrocarbon functional groups in the sedimentary succession and associated organic matter of the black shale samples. The results showed that aromatic C=C stretching, aromatic C-H out-of-plane, aromatic C-H in-plane, and aliphatic =C–H bending are the major hydrocarbon functional groups in the Kroh shales. Also, ultraviolet-visib

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Venturini, Natalia, Luiz Roberto Tommasi, Márcia C. Bícego, and César C. Martins. "Characterization of the benthic environment of a coastal area adjacent to an oil refinery, Todos os Santos Bay (NE-Brazil)." Brazilian Journal of Oceanography 52, no. 2 (2004): 123–34. http://dx.doi.org/10.1590/s1679-87592004000200004.

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In order to determine the sedimentological and physico-chemical characteristics of the benthic environment and also the level, distribution and probable sources of aliphatic and polycyclic aromatic hydrocarbons, sediment samples were collected at 28 stations in the northeast portion of Todos os Santos Bay. The centre and the east region of the study area showed characteristics of depositional environments with the predominance of silt and clay and high percentages of TOC, nitrogen and sulphur. The molar C/N ratios varied between 8.8 and 27.6 indicating a mixed origin of organic matter with var

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Kemp, Jesse M., Lerin R. Luckett-Chastain, Kaitlin N. Calhoun, et al. "Evaluation of skin irritation following weathered crude oil exposure in two mouse strains." Toxicology and Industrial Health 36, no. 10 (2020): 788–99. http://dx.doi.org/10.1177/0748233720944354.

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Petroleum crude oil spills are common and vary in size and scope. Spill response workers throughout the course of remediation are exposed to so-called weathered oil and are known to report diverse health effects, including contact dermatitis. A murine model of repeated exposure to weathered marine crude oil was employed utilizing two strains of mice, C57BL/6 and BALB/c, to investigate the pathology of this irritant and identify the principal hydrocarbon components deposited in skin. Histopathology demonstrated clear signs of irritation in oil-exposed skin from both mouse strains, characterized

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Kraemer, Kathleen E., G. C. Sloan, and Ramses M. Ramirez. "The Dustiest Galactic S Stars: Mid-infrared Spectra from SOFIA/FORCAST." Astrophysical Journal 973, no. 2 (2024): 158. http://dx.doi.org/10.3847/1538-4357/ad6dfa.

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Abstract We present spectra of 12 of the reddest, and hence dustiest, S stars in the Milky Way, observed with the FORCAST grisms on SOFIA. S stars are asymptotic giant branch (AGB) stars with C/O ∼ 1, so their molecular and dust chemistries are dominated by neither O nor C, often leading to atypical spectral features from their molecules and dust grains. All of the stars in our sample have strong dust emission features at 10–11 μm, but the shape of the feature in most of the stars differs from the shapes commonly observed in either oxygen-rich or carbon-rich AGB stars. Two stars also show the

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Purohit, V., and R. A. Orzel. "Polypropylene: A Literature Review of the Thermal Decomposition Products and Toxicity." Journal of the American College of Toxicology 7, no. 2 (1988): 221–42. http://dx.doi.org/10.3109/10915818809014521.

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This report presents a comprehensive literature review of the thermal decomposition products of polypropylene evolved under pyrolytic and oxidative conditions and the acute toxicity of combustion products of this polymer. Generally, the pyrolysis products of polypropylene (300–700°C) were aliphatic saturated and unsaturated hydrocarbons. The combustion of polypropylene in air (200–600°C) produced oxygenated hydrocarbons, aromatic hydrocarbons, aliphatic hydrocarbons, CO, CO2, and H2O. In general, as combustion temperature and time increased, the proportions of oxygenated and aliphatic hydrocar

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Krisztina, Roman, Zsoldos Gabriella, and Marossy Kalman. "Comparison of aliphatic hydrocarbon resistant plasticized PVC hoses." International Journal of Engineering Research and Science 3, no. 8 (2017): 06–11. https://doi.org/10.25125/engineering-journal-IJOER-AUG-2017-1.

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<strong><em>Abstract: </em></strong><em>This paper presents an experimental investigation of two types of aliphatic hydrocarbons resistant soft PVC hoses. A number of tests were performed to determine the internal structures and the difference between the hoses. First tests concerned with pentane resistance, the plasticizer and extender's effects on variations in the structure.</em> <em>The solubility of gas in plasticizer and the changing of morphology determined the applicability. The second analysis of FTIR results can show the internal structure’s composition, what the difference is betwee

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Carabineiro, Sónia Alexandra Correia. "Catalytic Oxidation of Hydrocarbons." Catalysts 14, no. 2 (2024): 111. http://dx.doi.org/10.3390/catal14020111.

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The catalytic oxidation of hydrocarbons stands at the forefront of sustainable chemical transformations, offering pathways to selectively convert aliphatic and aromatic compounds into valuable oxygenated products [...]

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Nematollahi, Hossein, Nasim Moradi, Morteza RiyaziNejad, and Hossein Vahidi. "Removal of Aliphatic Hydrocarbons from Gas Oil Contaminated Clay Soil via Soil Vapor Extraction." Civil Engineering Journal 4, no. 8 (2018): 1858. http://dx.doi.org/10.28991/cej-03091120.

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In this research, the performance of soil vapor extraction (SVE) for the removal of aliphatic hydrocarbons from gas oil contaminated soil and the effect of soil type on this method is studied. To explore the effect of soil type in the removal of hydrocarbons, SVE tests were conducted on 3 types of soil: 1) fine sand, 2) fine sand with 20% of kaolinite clay and 3) fine sand with 40% of kaolinite clay. Three extraction periods of 8, 16 and 24 hours were used. The results have shown that the efficiency of this method exceeds 78% in the removal of all hydrocarbons from fine sand, while an increase

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(Mrs.), G. Bisht, and B. Joshi (Miss). "GCMS study of petroleum spirit fraction of Leucas hyssopifolia Benth." Journal of Indian Chemical Society Vol. 76, Aug 1999 (1999): 414–15. https://doi.org/10.5281/zenodo.5852220.

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Department of Chemistry, Kumaon University, Nainital-263 002, India<strong> </strong> <em>Manuscript received 22 May 1998, revised 19 April 1999, accepted 17 May 1999</em> Fourteen aliphatic long-chain hydrocarbons from heptadecane to hexacosane and nine aliphatic ethyl esters ethyl tetradecanoate to ethyl heneicosanoate, have been isolated and identified by GC-MS study in petroleum spirit fraction of <em>Leucas hyssopifolia.</em>

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Lindley, Nicholas D. "Bioconversion and biodegradation of aliphatic hydrocarbons." Canadian Journal of Botany 73, S1 (1995): 1034–42. http://dx.doi.org/10.1139/b95-354.

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Aliphatic hydrocarbons represent a substantial energy reserve but also constitute a useful feedstock for the biotechnological production of various alkane-derived commodity chemicals. In addition, the biodegradation of aliphatic hydrocarbons continues to pose problems for fuel stocks with associated corrosion and eventual motor filter blocking. A relatively high number of yeasts and filamentous fungi have been described that degrade n-alkanes, but relatively few have received thorough investigation. Early work exploiting hydrocarbons as a potential substrate for unicellular protein production,

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Pravinkumar, A. Domde, J. Purohit Hemant, Singh Kashyap Rajpal, and S. Wagh Shardul. "Biodegradation of Aliphatic Hydrocarbon Compounds by Bacterial Cultures." International Journal of Current Science Research and Review 06, no. 04 (2023): 2241–56. https://doi.org/10.5281/zenodo.7793826.

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<strong>ABSTRACT: </strong>In the present study biodegradation of alphatic hycarbon compounds by bacterial cultures has been targeted. Growth curves analysis of <em>Bacillus subtilis</em> PD6, <em>Bacillus sp. </em>PD9, <em>Enterobacter sp. </em>PD11 and <em>Bacillus sp. </em>PD14 during utilization of dodecane, hexadecane, octadecane, eicosane and tetracosane as a sole source of carbon for growth and energy was performed. During this study, the degradation of different aliphatic hydrocarbons was studied as a function of bacterial growth. The hydrocarbon degradation efficacy of different bacte

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Mary, Sandeepa Gujjula*. "Microbial Trends in Bioremediation of Oil Contaminated Sites: A Comprehensive Review." International Journal of Pharmacy and Biological Sciences (IJPBS) 10, no. 4 (2020): 165–77. https://doi.org/10.5281/zenodo.14029344.

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AbstractHydrocarbons are highly toxic pollutants that are difficult to degrade and can persist in the environment for many years, posing significant threats to the ecological system. Remediating hydrocarbons in contaminated soils has become a challenging task. Currently, bioremediation has gained significant importance compared to other methods, as it is eco-friendly, cost-effective, and can efficiently degrade hydrocarbons in polluted soils. This process relies on microorganisms capable of transforming or mineralizing hydrocarbons. Bacterial degradation processes have proven effective in brea

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TAKAGI, M., N. UEMURA, and K. FURUHASHI. "Microbial Transformation Processes of Aliphatic Hydrocarbons." Annals of the New York Academy of Sciences 613, no. 1 Enzyme Engine (1990): 697–701. http://dx.doi.org/10.1111/j.1749-6632.1990.tb18248.x.

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Timmons, R. B., W. L. Jang, and Y. He. "Catalytic hydrodehalogenation of polyhalogenated aliphatic hydrocarbons." Zeolites 15, no. 3 (1995): 283. http://dx.doi.org/10.1016/0144-2449(95)90051-9.

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Cronin, John R., and Sandra Pizzarello. "Aliphatic hydrocarbons of the Murchison meteorite." Geochimica et Cosmochimica Acta 54, no. 10 (1990): 2859–68. http://dx.doi.org/10.1016/0016-7037(90)90020-l.

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Farjadfard, Sima, Seyyed Mehdi Borghei, Amir Hessam Hassani, Bagher Yakhchali, Mehdi Ardjmand, and Majid Zeinali. "Efficient biodegradation of naphthalene by a newly characterized indigenous Achromobacter sp. FBHYA2 isolated from Tehran Oil Refinery Complex." Water Science and Technology 66, no. 3 (2012): 594–602. http://dx.doi.org/10.2166/wst.2012.217.

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A bacterial strain, FBHYA2, capable of degrading naphthalene, was isolated from the American Petroleum Institute (API) separator of the Tehran Oil Refinery Complex (TORC). Strain FBHYA2 was identified as Achromobacter sp. based on physiological and biochemical characteristics and also phylogenetic similarity of 16S rRNA gene sequence. The optimal growth conditions for strain FBHYA2 were pH 6.0, 30 °C and 1.0% NaCl. Strain FBHYA2 can utilize naphthalene as the sole source of carbon and energy and was able to degrade naphthalene aerobically very fast, 48 h for 96% removal at 500 mg/L concentrati

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Ravishankar, S., David C. Tilotta, Kenneth W. Busch, and Marianna A. Busch. "Spatial Emission Characteristics of a Capillary-Burner Excitation Source for a Flame Infrared Emission (FIRE) Radiometer." Applied Spectroscopy 45, no. 10 (1991): 1684–94. http://dx.doi.org/10.1366/0003702914335102.

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A complete mapping of the lateral and radial intensities of the 4.4- μm emission (antisymmetric CO2 stretch) resulting from the direct introduction of carbon dioxide, a homologous series of aliphatic hydrocarbons, and benzene into a hydrogen/air combustion flame supported on a capillary burner has been carried out. Both concentrated (99% methane, ethane, propane, and butane) and dilute (1% methane, ethane, propane, and benzene) hydrocarbons were studied. Flame profiles produced by the introduction of carbon dioxide were used to indicate the effects of local variations in source temperature and

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Augustine, Avwerosuo Chokor. "Total petroleum and aliphatic hydrocarbons profile of the River Niger surface water at Okpu and Iyiowa-Odekpe regions in South-Eastern, Nigeria." Chemistry International 7, no. 3 (2021): 188–96. https://doi.org/10.5281/zenodo.4899763.

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Total petroleum hydrocarbons (TPH) as well as the aliphatic profiles of surface water at the Okpu and Iyiowa-Odekpe sections of the River Niger in South-Eastern Nigeria were determined.  Composites samples taken from surface water at three different locations (ST-1, ST-2, & ST-3) for the months of June, September, December and February, were extracted with dichloromethane (DCM) by liquid-liquid partition and analyzed for TPH and aliphatic components using gas chromatography-flame ionization detection (GC-FID). The results reveal a TPH range of 1658.475-5435.742 µg/L with a mean

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