Low-temperature properties of fuel blends based on biodiesel derived from frying oil wastes

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BACKGROUND: Automotive engines are one of the environment pollutants with harmful substances and greenhouse gases. Recently, the field of carbon-free or carbon-neutral energy has become the most relevant. In this regard, the task of reducing the carbon footprint of automotive equipment equipped with internal combustion engines remains urgent. This can be done by complete or partial replacement of the fuel with the carbon-neutral one, such as plant-origin biofuels.

AIMS: Study of low-temperature properties of fuel blends based on biodiesel derived from frying oil wastes.

MATERIALS AND METHODS: The vegetable oil ether was derived from purified frying oil wastes by esterification. Then fuel blends were obtained by mixing the derived ether with diesel fuel of different brands and butanol. The study of viscosity-temperature properties and density of the obtained fuel blends was carried out in the temperature range from -20°C to 40°C. The methods and equipment for determining these parameters meet the requirements of GOST.

RESULTS: The obtained study results helped to conclude that blended biodiesel in certain proportions can be used as fuel even at negative ambient temperatures, which is not uncommon for the start of a sowing campaign in spring and the end of field work in autumn in sharply continental climatic conditions.

CONCLUSIONS: The practical value of the study lies in the possibility of using fuel blends based on biodiesel derived from frying oil wastes at low temperatures.

作者简介

Sergey Krivtsov

Irkutsk National Research Technical University

Email: krivcov_sergei@mail.ru
ORCID iD: 0000-0003-0462-8455
SPIN 代码: 9278-4018

Dr. Sci. (Tech.), Professor of the Automotive Transport Department

俄罗斯联邦, Irkutsk

Tatiana Krivtsova

Irkutsk National Research Technical University

Email: tatyana_krivcova1985@mail.ru
ORCID iD: 0000-0001-9425-2062
SPIN 代码: 5695-7595

Cand. Sci. (Tech.), Associate Professor of the Automotive Transport Department

俄罗斯联邦, Irkutsk

Nadezhda Kovaleva

Irkutsk National Research Technical University

编辑信件的主要联系方式.
Email: okladnikova_ni@mail.ru
ORCID iD: 0009-0007-2611-1605
SPIN 代码: 4898-2574

Postgraduate of the Automotive Transport Department

俄罗斯联邦, Irkutsk

参考

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2. Fig. 1. Samples of fuel blends for study.

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3. Fig. 2. Density distribution diagram for selected fuel types: ORM –vegetable oil wastes; BD – biodiesel; DT – diesel fuel; B20C – biodiesel with 20% alcohol content.

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4. Fig. 3. Dependence graph of the biodiesel viscosity on temperature: CHBD – biodiesel; B20 – biodiesel with 20% alcohol content.

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5. Fig. 4. Dependence graph of the fuel blend density on the percentage of the B20C biodiesel.

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6. Fig. 5. Samples of biodiesel with diesel fuel blurred or frozen at temperature down to -20°С.

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7. Fig. 6. Samples of biodiesel with diesel fuel, retained fluidity at a temperature of –20°C.

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8. Fig. 7. Dependence graph of the fuel blends viscosity on the percentage of the В20С biodiesel at temperatures from -20°С to +40°С.

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