Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "Biodiesel" wg kryterium: Temat

  Lista filtrów
Wyrównaj
    Wyświetlanie 1-8 z 8
    Tytuł:
    Production and characterization of biodiesel from coconut extract (Cocos nucifera)
    Autorzy:
    Maitera, O. N.
    Louis, H.
    Dass, P. M.
    Akakuru, U. O.
    Joshua, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/1118351.pdf
    Data publikacji:
    2017
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Biodiesel
    coconut
    fuels
    oil
    renewable energy
    Opis:
    In this study, oil was extracted from coconut. The extracted oil was used to produce biodiesel and the oil and the biodiesel produced were characterised. Biodiesel fuels are alternative diesel fuels usually obtained from renewable sources, mainly, vegetable and animal oils. Oil was extracted from coconuts bought from a local market in Wukari Taraba State, Nigeria, by means of the solvent method. The extracted coconut oil was then characterized. This showed that the coconut oil has a density of 0.91 g, viscosity of 23 mm2/s, saponification value of 191 mg KOH/g, iodine value of 10 mgl2/g, acid value 1of 4.0 mg KOH/g and flash point of 266 °C. The biodiesel of the oil was produced using a transesterification process. The biodiesel was also characterized. Results obtained showed that the biodiesel has a density of 0.89 g, viscosity of 2.83 mm2/s, acid value of 0.18 mg KOH/g, saponification value of 91 mg KOH/g, iodine value of 8 mgl2/g, acid value of 0.18 mg KOH/g and flash point of 110 °C. The physicochemical properties of the biodiesel produce from coconut oil is comparable with that of standard biodiesel in the range of ASTM specifications.
    Źródło:
    World News of Natural Sciences; 2017, 9; 62-70
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synthesis and Physico-chemical Studies of Base Catalyzed Methanolysis of Some Virgin Tropical Seed Oils
    Autorzy:
    Esonye, Chizoo
    Onukwuli, Okechukwu Dominic
    Ofoefule, Akuzuo Uwaoma
    Powiązania:
    https://bibliotekanauki.pl/articles/1113573.pdf
    Data publikacji:
    2017
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Extraction
    Physico-chemical Parameters
    Transesterification; Biodiesel
    Vegetable oils
    Opis:
    The physico-chemical characterization of Prunus amygdalus, Dacryodes edulis and Chrysophillum albidium seed oils were investigated, together with their methyl esters. The vegetable oils were extracted by applying the solvent extraction method, using n-hexane. Prunus amygdalus had the highest oil yield (60.1%), followed by Dyacrodes edulis (55.76 %) and least from Chrysophillum albidium (13.67%). The oils and their biodiesel were then analyzed for acid value, free fatty acid, specific gravity, ash content, iodine value, peroxide value, saponification value, kinematic viscosity, flash point, smoke point, titre value, cloud point, moisture content and refractive index. Accordingly, Dyacrodes edulis seed oil had the highest acid value of 6.57 and required two-step transesterifictaion. The produced biodiesels were discussed in the light of ASTM D 9751, ASTMD 6751 and DIN 14214. These showed yields of 94.36%, 93.03% and 86.49%, cetane numbers of 70.40, 55.20 and 64.57 and calorific values of 31,178.39 KJ/kg, 34,421.50 KJ/kg and 32,838.38 KJ/kg for Prunus amygdalus, Dacryodes edulis and Chrysophyllum albidium, respectively. Other fuel-related properties showed highly improved qualities upon transesterification and compared well with ASTM and EU standards. The overall results showed that the seed oils are viable for biodiesel production.
    Źródło:
    World News of Natural Sciences; 2017, 15; 112-128
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Biochemical and molecular studies of Jatropha curcas L. - Biofuel species
    Autorzy:
    Patil, Ravikumar S.
    Patted, Mahesh
    Savitha, G.
    Naik, G. R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1165369.pdf
    Data publikacji:
    2018
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Biofuel
    DGAT
    Jatropha curcas
    biodiesel
    genomic DNA and Triglycerides
    Opis:
    Fossil fuels plays vital role in the development of the nation. The limitation of the Non-renewable energy required alternative energy sources such as solar, wind energy, hydro energy and biomass energy etc., and these renewable energies are eco-friendly in nature. The study has conducted for the determination of fatty acid profile in Jatropha curcas oil, determination of restriction sites in genomic DNA of Jatropha curcas, comparison of DGAT gene sequence alignment of different plants using Clustal W software. and PCR amplification of DGAT gene. The results confirmed that the solvent extraction produced high quality oil. From the thin layer chromatography plate, the saturated fatty acid like Linoleinic acid (0.14), Palmatic acid (0.38), Stearic acid (0.72), and unsaturated fatty acid like and Oleic acid (0.90) were identified. The genomic DNA was restriction digested with EcoRI, BamHI, PstI, HindIII. The observed that restriction bands for EcoRI was 3 sites and for Hind III was 1 site respectively. The amplification of gene encoding DGAT gene from the genomic DNA was carried out by polymerase chain reaction and also by bioinformatics software and was found to be approximately 2 kb size. Our study makes initial step for altering of the Jatropha seed oil for enhancing the oil content level.
    Źródło:
    World Scientific News; 2018, 107; 108-124
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of Blending Various Biodiesels with Diesel on Performance and Emissions of Diesel Engine: A Review
    Autorzy:
    Rubiat, Mustak
    Powiązania:
    https://bibliotekanauki.pl/articles/1157150.pdf
    Data publikacji:
    2018
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Biodiesel
    Blends
    Combustion
    Diesel
    Emission Characteristics
    Engine Performance Parameters
    Environment
    Opis:
    Due to limited resources and hazardous effects on environment people now a day tries to find out an alternative for fossil fuels. Fossil fuels when burnt produce a lot of carbon dioxide which is one of the primary reasons for global warming. Petroleum is a form of fossil fuel. With the help of distillation process petrol, paraffin, kerosene and diesel oil can obtain from natural petroleum. To protect the environment biodiesels can substitute these fossil fuels. Biodiesels can use as an alternative for diesel. Researchers from around the world tried for many years to find a suitable biodiesel which can substitute diesel. Many biodiesels have been produced from different sources and tested for their performances. Some researchers try to find out a good combination of biodiesel blends which can be used as an alternative of diesel. Some of them try to find out a suitable blend of diesel and biodiesel to reduce the environmental impact and for better emission characteristics. Effects of blending different types of biodiesels with diesel have been investigated by many researchers. In this present review article a summary is written on such attempts.
    Źródło:
    World Scientific News; 2018, 94, 2; 287-297
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Functional properties of neem oil as potential feedstock for biodiesel production
    Autorzy:
    Bhandare, P.
    Naik, G.R.
    Powiązania:
    https://bibliotekanauki.pl/articles/11717.pdf
    Data publikacji:
    2015
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    functional property
    neem
    seed oil
    Azadirachta indica
    feedstock
    biodiesel production
    physicochemical parameter
    Opis:
    Fossil fuel resources are decreasing daily while biodiesel fuels are attracting increasing attention worldwide as blending components or direct replacements for diesel fuel in vehicle engines. In this experiment the seed oils of 30 Neem (Azadirachta indica. A. juss) biotypes were screened and evaluated for their physio-chemical parameters for oil content, biodiesel yield, density, viscosity, iodine value , free fatty acid and saponification value. Hence the neem seed oil tested in this current study could be the potential sources of raw material for biodiesel production.
    Źródło:
    International Letters of Natural Sciences; 2015, 07
    2300-9675
    Pojawia się w:
    International Letters of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of the chemical composition, characterization and determination of energy content for renewable energy source (biodiesel) produced from non-edible Ethiopian seeds’ particularly castor seed (Ricinus communis) using homogeneous catalysis
    Autorzy:
    Hiwot, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/412591.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    castor oil
    non -edible oil
    biodiesel
    transesterification
    homogeneous catalyst
    FAME
    GC-MS
    Opis:
    Biodiesel is a clean, renewable, biodegradable, environmentally benign, energy efficient and diesel substituent fuel used in diesel engine. It provides a feasible solution to the twin crises of fossil fuel depletion and environmental pollution. It is produced from renewable sources such as vegetable oils or animal fats by trans-esterification. Although this fuel has gained worldwide recognition for many years, it is not being widely commercialized like petroleum diesel in the world, not widely produced and used especially in our country Ethiopia. Analysis of fatty acid methyl ester composition of the biodiesel produced from castor oil was done with the help of GC-MS and 8 fatty acid methyl esters were identified. Acid and base catalyzed methods were used in the synthesis of biodiesel from castor seed oil. In addition to this the variables that affect the amount of methyl ester yield were determined and an optimum of 96.7 % fatty acid methyl ester (FAME) conversion was obtained at a methanol to oil molar ratio of 6:1, 1.0 % mass NaOH, 65 °C reaction temperature and 3 hour reaction time. The energy content of the oil and biodiesel were 39 MJ/Kg and 40.7 MJ/ Kg respectively which is determined by bomb calorimeter. Other physicochemical properties of the biodiesel were determined and all these lie within the ASTM and EN biodiesel standards except kinematic viscosity. Therefore, castor seed oil methyl ester could be used as an alternative energy resource in diesel engine by blending with petroleum diesel.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2014, 18; 63-74
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Determination of oil and biodiesel content, physicochemical properties of the oil extracted from avocado seed (Persea americana) grown in Wonago and Dilla (gedeo zone), southern Ethiopia
    Autorzy:
    Hiwot, Tsegay
    Powiązania:
    https://bibliotekanauki.pl/articles/1193051.pdf
    Data publikacji:
    2016
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    avocado seed oil
    biodiesel
    Soxhlet extraction
    physicochemical properties
    Wonago
    Dilla
    n-hexane
    Opis:
    The avocado seeds were collected from Dilla and Wonago in gedeo zone, southern part of Ethiopia for oil extraction and biodiesel production. The collected seeds were oven dried and crushed in to powder by mortar and pestle. A soxhlet extraction was used for extraction of the oil. The solvent used for oil extraction was n-hexane. The extracted oil was separated from the solvents by vacuum rata evaporator. The oil content, biodiesel content and the physico-chemical parameters of the oil as well as the biodiesel were determined .The oil content and biodiesel content is 27.6% and 95.2% for avocado seed grown in wonago and 27.2% and 94.86% for avocado seed grown in Dilla respectively. The physico-chemical parameters of the oil and biodiesel were determined and the result shows that the acid value of (4, 4.3, 0.89, 0.92), saponification value (223, 219), Kinematic viscosity (36, 7, 5.02, 37.44, 5.15), Density (933, 882, 936, 884 g/ml), Higher heating (38, 40.5, 37, 40), Ester content (95.2, 94.86) respectively. Based on the GC-MS analysis of the biodiesel, four FAME compounds were identified. These are methyl palmitate, methyl linoleate, methyl oleate and methyl stearate. From the physicochemical properties of the biodiesel determined avocado seed oil methyl ester could be used as an alternative energy resource in diesel engine.
    Źródło:
    World Scientific News; 2016, 58; 133-147
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of chemical composition, characterization and determination of biodiesel content for the oil extracted from waste coffee residue of different varieties of coffee beans grown in yirgachefie, kocherea and yirgalem using homogeneous catalysis and comparing it with fossil fuels
    Autorzy:
    Hiwot, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/411602.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    waste coffee oil
    yirgachefie
    yirgalem
    kocherea
    transesterification
    biodiesel
    fatty acid methyl ester
    FTIR
    GC-MS
    Opis:
    Due to rapid population growth and development in the world there is high energy demand, energy consumption, sharp decline in petro fuels reserves, and greater environmental problems, as a result of using petroleum diesel constrained mankind to investigate newer and renewable feed stocks for liquid transportation fuels from vegetable oils by transesterification reaction. In this study oil of waste coffee residue of yirgachefie, yirgalem and kocherea (chellelleqtu) weredas were selected as potential raw from indigenous species for biodiesel production. Oil was extracted using n-hexane as a solvent from waste coffee residue of yirga chefie, yirgalem and kocherea weredas. The oil contents for yirgachefie, yirgalem and kocherea were 16.67% w/w, 19.7 % w/w and 16.9% w/w respectively. Transesterification were carried out for all oils using methanol in the presence of acidic and basic catalysts to produce biodiesel. The fatty acid methyl esters in the biodiesel prepared from the oil extracted from three waste coffee residues were analyzed by FTIR and GC-MS. Based on GC-MS analysis their chemical compositions were 37.7 wt. % methyl palmitate (C16:0), 41 wt. % methyl linoleate (C18:2), 13.5 wt. % methyl oleate (C18:1) and 8.5 wt. % methyl stearate (C18:0) for yirgachefie, 35.90 wt.% methyl palmitate (C16:0), 38.28 wt. % methyl linoleate (C18:2), 16.42 wt. % methyl oleate (C18:1) and 9.40 wt.% methyl stearate (C18:0) for kocherea and 26.62 wt. % methyl palmitate (C16:0), 35.18 wt.% methyl linoleate (C18:2), 19.72 wt. % methyl oleate (C18:1) and 18.48 wt.% methyl stearate (C18:0) for yirgalem. In addition to this the variables that affect the amount of methyl ester yield were determined and an optimum of 94.7 %, 95.84 and 94.56 fatty acid methyl ester (FAME) conversion were obtained at a methanol to oil molar ratio of 6:1, 1.0 % mass NaOH, 65 °C reaction temperature and 3 hour reaction time for yirgachefie, yirgalem and kochera respectively. The energy content of the oil and biodiesel were 38, 36.2, 37 MJ/Kg and 38.68, 38, 41 MJ/ Kg for yirgachefie, yirgalem and kochera respectively which is determined by bomb calorimeter. Other physicochemical properties of the biodiesel were determined and all these lie within the ASTM and EN biodiesel standards except acidic value. Therefore, coffee seed oil methyl ester could be used as an alternative energy resource in diesel engine.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2014, 20, 1; 88-89
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

      Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies