Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 6

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
1

Produkcja biodiesla z oleju lnianki

100%
Makareviciene V., Sendzikiene E., Zaleckas E.
Tłuszcze Jadalne
|
2010
|
tom 45
|
nr 1-2
50-59
2

Wlasciwosci oraz oddzialywanie na srodowisko estrow metylowych otrzymanych z tluszczow odpadowych

100%
Sendzikiene E., Makreviciene V., Janulis P.
Tłuszcze Jadalne
|
2006
|
tom 41
|
nr 3-4
338-345
3

Life cycle analysis of rapeseed oil butyl esters produced from waste and pure rapeseed oil

100%
Sendzikiene E., Makareviciene V., Kazanceva I.
Polish Journal of Environmental Studies
|
2018
|
tom 27
|
nr 2
We compared the life cycle of rapeseed oil butyl esters (RBEs) made from waste rapeseed oil with that of RBEs made from conventional rapeseed oil. Chemical and biotechnological methods of production are considered. Sodium hydroxide was chosen as a catalyst for the chemical production method; for biotechnological production, the lipase lipozyme RM IM was chosen. The life cycle assessment, which was performed using the CML-IA baseline V 3.02/EU 25 method (SimaPro software), shows that using waste oil has a positive effect on all impact categories with the application of either biotechnological or chemical production methods. The use of RBEs from waste oil (using the biotechnological production method) led to a reduction of the following environmental impacts (compared with fossil fuel impacts): abiotic depletion up to 79.1%, acidification 38.8%, eutrophication 18.33%, global warming 77%, ozone layer depletion 90.12%, human toxicity 71.8%, fresh water aquatic ecotoxicity 9.01%, marine water aquatic ecotoxicity 56.9%, terrestrial ecotoxicity 0.191% (according to our results the impact of diesel on terrestrial ecotoxicity was small), and photochemical oxidation 36.8%.
4

Oxidation stability of biodiesel fuel produced from fatty wastes

100%
Sendzikiene E., Makareviciene V., Janulis P.
Polish Journal of Environmental Studies
|
2005
|
tom 14
|
nr 3
The aim of this work was to examine possibilities to use wastes of animal fat and vegetable oil for the production of biodiesel fuel, evaluating the conformity of the product obtained to the oxidation stability requirements. The oxidation stability of rapeseed oil, linseed oil, tallow and lard fatty acid methyl esters samples and their mixtures was measured by commercial equipment Rancimat 743 applying accelerated oxidation test (Rancimat test) specified in EN 14112. It was found that fatty acid methyl esters of vegetable origin are more stable for oxidation comparing with methyl esters of animal origin. The optimal level of synthetic antioxidants such as butylated hydroxyanizole (BHA) and butylated hydroxytoluene (BHA) for stabilization of fatty acid methyl esters was determined to be 400 ppm (also using synergist – citric acid, 20% of the antioxidant quantity). Mixtures of methyl esters of animal and vegetable origin with antioxidants were more stable compared with pure products. The highest oxidation stability showed mixtures containing 80-90% of fatty acid methyl esters of animal fat and 10-20% of fatty acid methyl esters of vegetable oil with synthetic antioxidants added.
5

Influence of composition of fatty acid methyl esters on smoke opacity and amount of polycyclic aromatic hydrocarbons in engine emissions

100%
Sendzikiene E., Makareviciene V., Janulis P.
Polish Journal of Environmental Studies
|
2007
|
tom 16
|
nr 2
Soot and hydrocarbons are usually found in diesel exhaust gases. They are formed when the fuel is burnt out incompletely. Polycyclic aromatic hydrocarbons (PAH) are sorbed on the soot, and may cause cancerous diseases, asthma and other diseases. The purpose of this work was to evaluate the dependence of smoke opacity and amount of polycyclic aromatic hydrocarbons in engine emissions on multi-component biodiesel fuel composition. We analyzed the composition of exhaust gases when diesel engine was fuelled with rapeseed oil methyl esters (RME ), RME mixtures with linseed oil methyl esters (LSME ) and fatty acid methyl esters (FA ME) of animal origin, assessing the smoke opacity and qualitative and quantitative composition of PAH. It was determined that smoke opacity of exhaust gases decreases at different rotation speeds (1200 and 2000 min⁻¹) when the amount of FA ME, containing a greater amount of saturated fatty acids, is increasing. Total PAH concentration in exhaust gases of biofuel mixtures with pork lard fatty acid methyl esters (LME ) is lower than in the case of mixtures with beef tallow fatty acid methyl esters (TME ). The amount of PAH at a rotation speed of 1200 min⁻¹ reduced down to 57%, if compared to pure RME , and down to 30%, when the rotation speed was 2000 min⁻¹. In the exhaust gases of biofuel mixtures with pork lard fatty acid methyl esters there are fewer PAHs with highly expressed mutagenic and carcinogenic effects if compared to pure RME and its mixtures, containing tallow fatty acid methyl esters. The most effective from an environmental point of view is use of a fuel mixture containing 80% RME , 4% LSME and 16% LME.
6

Biodiesel fuel production from fatty waste

100%
Sendzikiene E., Kazancev K., Makareviciene V., Janulis P.
Tłuszcze Jadalne
|
2005
|
tom 40
|
nr 3-4
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.