scholarly journals Analysis of Biological Degradation and Life Cycle Indicators of Mineral Diesel Fuel Mixtures, Containing 10% Biodiesel, Obtained by Simultaneous Oil Extraction and Transesterification

Energies ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 8367
Author(s):  
Violeta Makareviciene ◽  
Migle Santaraite ◽  
Egle Sendzikiene

This article provides data on the environmental properties of biofuels obtained by the simultaneous extraction of oil from spoiled rapeseed and transesterification, with the addition of mineral diesel to the reaction mixture. The resulting reaction product contained 10% biodiesel: fatty acid methyl, ethyl, or butyl esters in mixtures with mineral diesel. The addition of biodiesel has been found to increase the rate of biodegradation of fuels. Such fuels are classified as partially biodegradable, according to the OECD classification. Life cycle analysis showed that the mixtures of biodiesel and mineral diesel have lower negative environmental impacts, compared to pure mineral diesel. The values of indicators such as abiotic depletion, acidification, global warming, ozone depletion, and human toxicity for these mixtures were 40–58% lower compared to the corresponding values for mineral diesel.

2017 ◽  
Vol 24 (3) ◽  
Author(s):  
Irina Kazanceva ◽  
Eglė Sendžikienė ◽  
Ieva Sendžikaitė

Global warming has forced humanity to care for greenhouse gas emission reductions, at the same time the production and use of biofuels. One of the positive environmental properties of biofuels is fast biological degradation. Biological degradability of pure rapeseed oil fatty acid butyl esters (RBE) within 28 days is 70% and such product meets the requirements for biofuel. During the same period, only 26% of mineral diesel fuel (D) is decomposed. Multi-component fuel containing up to 30% biofuel is less biodegradable and specified as a partially biodegradable material. The peroxide and acid number of pure biodiesel is growing rapidly when aging compared to that of mineral diesel and multicomponent fuel mixtures. The acid number of pure rapeseed oil fatty acid methyl esters (RME) was higher than the standard requirements after 3 weeks of storage. The acid number of mixtures containing 15% RME (RME15B15D70) and RBE (RBE15B15D70 and RBE25B25D50) was less than 0.5 mg KOH/g–1 after 8 weeks of storage. Multi-component fuel is more resistant to oxidation than pure biodiesel fuel.


2018 ◽  
Vol 27 (2) ◽  
pp. 829-837
Author(s):  
Egle Sendzikiene ◽  
Violeta Makareviciene ◽  
Irina Kazanceva

2021 ◽  
Vol 11 (17) ◽  
pp. 7947
Author(s):  
Joana Almeida ◽  
Paulina Faria ◽  
Alexandra Branco Ribeiro ◽  
António Santos Silva

The use of secondary mining resources to replace conventional constituents in mortars production has proved the effectiveness to preserve the quality of mechanical, physical, and chemical properties. However, minimal research has been performed to quantify the environmental impacts of mortars with mining residues. In the present work, a life cycle assessment of 10 mortars was carried out. A reference mortar (100% of cement binder) and mortars with cement substitutions in 10, 25, and 50% by raw, electrodialytic treated, and electrodialytic plus thermal treated mining residues were analysed. The impacts were studied in six environmental categories: (1) abiotic depletion; (2) global warming; (3) ozone depletion; (4) photochemical ozone creation; (5) acidification; and (6) eutrophication potentials. The results demonstrated that mortars formulated with raw mining residues may decrease the environmental impacts, namely in global warming potential (55.1 kg CO2 eq./t modified mortar). Considering the treatments applied to mining residues, the major mitigations were reported in photochemical ozone creation (−99%), ozone depletion (−76 to −98%), and acidification potential (−90 to −94%), mainly due to the disposal impacts avoided in comparison to the reference mortar. Analysing all mortars’ constituents and their management options, products with electrodialytic treated mining residues showed higher influence in ozone depletion (18 to 52%). Coupling a thermal procedure, mining residues contributed for 99% of the abiotic depletion potential of mortars.


2008 ◽  
Vol 4 (4) ◽  
pp. 318-323 ◽  
Author(s):  
Hirotsugu KAMAHARA ◽  
Shun YAMAGUCHI ◽  
Ryuichi TACHIBANA ◽  
Naohiro GOTO ◽  
Koichi FUJIE

2020 ◽  
Vol 5 (4) ◽  
pp. 223-229
Author(s):  
Yuliia Slyva ◽  
◽  
Oleksiy Verenikin ◽  

The research on the development of an innovative formula of a synthetic detergent with improved environmental properties, which meet the environmental standard of SOU OEM 08.002.12.065:2016 "Detergents and cleaning products. Environmental criteria for life cycle assessment" is carried out. The accumulated theoretical and practical experience is generalized, the general scheme of designing and development of new goods taking into account features of detergents with the improved ecological characteristics is created.


2019 ◽  
Vol 28 (1) ◽  
pp. 131-158
Author(s):  
Hanbyeol Yoo ◽  
T.J. Lah

2018 ◽  
Author(s):  
Timothy J Skone ◽  
Greg Schivley ◽  
Matthew Jamieson ◽  
Joe Marriott ◽  
Greg Cooney ◽  
...  

2019 ◽  
Author(s):  
James Littlefield ◽  
Selina Roman-White ◽  
Dan Augustine ◽  
Ambica Pegallapati ◽  
George G. Zaimes ◽  
...  

2013 ◽  
Author(s):  
Timothy J. Skone ◽  
Robert E. James III ◽  
Greg Cooney ◽  
Matt Jamieson ◽  
James Littlefield ◽  
...  

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