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Testing of the fleet of the vehicles with diesel engines fed by BIOXDIESEL fuel

100%

Struś M. , Poprawski W. , Rewolte M.

tom R. 56, nr 3

37--41

The paper presents results of testing of the fleet of the parcel delivery vehicles, equipped with the Diesel engines fed by biofuel BIOXDIESEL, manufactured on the way of the ethanol esterification process of the waste vegetable and animal fats, with the addition of the standard diesel fuel and pure ethanol. The comparison results of the vehicles test bed on the beginning of the testing and at the end of the testing, when vehicles were fueled with standard diesel and testing biofuel. The results of the testing at non-stationary states are also presented. The paper presents also results of the drivers evaluation of the performance of the vehicles based on the questionnaire. Presented results show that the BIOXDIESEL fuel is fully replaceable to the standard diesel fuel.

Improvement of the compression ignition behaviour and combustion efficiency of the second generation biofuel BIOXDIESEL

100%

Struś M. , Poprawski W.

tom R. 58, nr 3

187--190

Biodiesel fuel is covering more and more place in the market. The reason is a limited fossil fuels resources and the need to reduce emission of harmful substances by application of the fuel made of renewable resources. Currently in Poland and in Europe, the Fatty Acid Methyl Esters are used as biocomponent of the biodiesel fuel or it is used as pure biodiesel fuel. This paper presents the research on the biofuel, which contains mainly Fatty Acid Ethyl Esters, (the energetic value of FAEE is higher than FAME) and mineral Diesel fuel is a small addition. This paper presents research on the improvement of the compression ignition behaviour and combustion effectiveness of the second generation biofuel BIOXDIESEL, which contains up to 75% of biocomponents (FAEE with bioethanol) with addition of mineral Diesel fuel. Improvement of the auto-ignition properties is achieved through the multi-component composition of Bioxdiesel fuel and dosing of enriching additives. The quality of the fuel has been evaluated during engine testing and during laboratory measurement of fuel parameters. Whereas satisfactory results show that it is appropriate to supplement the composition of biofuels produced from waste vegetable and animal fats and alcohol with the refining additive.

Ocena aktywności biologicznej estrów etylowych kwasów tłuszczowych z nasion ogórecznika lekarskiego (Borago officinalis L.)

84%

Czyrek A. , Janczak M. , Marędziak M. , Basińska K.

tom T. 93, nr 10

1746-1749

Zbadano wpływ estrow etylowych kwasów tłuszczowych otrzymanych z nasion ogórecznika lekarskiego (Borago officinalis L.) na aktywność proliferacyjną oraz morfologię ludzkich mezenchymalnych komórek macierzystych izolowanych ze sznura pępowinowego hWJ MSCs (human Wharton’s Jelly-derived mesenchymal stem cells). Otrzymane wyniki wskazują, że wpływ dodatku estrów etylowych z ogórecznika na komórki hWJ MSC zależał od jego stężenia. Dodatek 2% badanych estrów stymulował proliferację hWJ MSC, zaś dodatek 6% inhibował proliferację hWJ MSC oraz istotnie wpływał na ich morfologię. Wyniki przeprowadzonych badań mogą znaleźć szerokie zastosowanie, szczególnie w nutrigenomice oraz farmakologii regeneracyjnej.

Borage (Borago officinalis L.) seed-contained glycerides were transesterified with EtOH in presence of KOH. The Et esters were added to culture of human mesenchymal stem cells from umbilical cord to study their effect on the cell-proliferation activity and morphol. The addn. of 2% resulted in a stimulation of the cells while addn. of 6% resulted in an inhibition of their proliferation and a deterioration of their morphol.