Could RME biodiesel be potentially harmful to modern engine? solidification process in RME

Tarakowski, Rafał; Malanowski, A.; Rostocki, A. J.; Kowalczyk, Mateusz; Modzelewski, Piotr; Ptasznik, S.; Siegoczyński, R. M.

doi:10.1016/j.fuel.2014.12.007

Cited by 10 publications

(4 citation statements)

References 38 publications

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“…Correspondingly, the observations of the high-pressure glass formation of water [63], ionic liquid [64] and crude oil [65], raise a question on whether SE remains valid for liquids which are densified by high pressure instead of cooling [14]. Some experimental studies confirmed the liquid-solid transition of polyatomic organic components, e.g., solidification of biodiesel mixtures (up to 350 MPa) [12], n-Octane (∼0.9 GPa) [66], pure FAMEs [10] (up to 80 MPa), n-Tetradecane (302.8 MPa) [67], and the crystallisation of Methyl Stearate (0.2 GPa) [11]. The MD modelling and simulation may be used to understand the phenomenon and answer the question.…”

Section: Breakdown Of Se Relation Due To High-pressure Solidificationmentioning

confidence: 99%

“…The high-pressure induced solidification and crystallization of FAMEs observed in experiments [10,11] make the viscosity prediction in high-pressure conditions very challenging. The modern common-rail injection system has been tested in the pressure above 300 MPa [11,12]. Moreover, lubricated machine components, such as gears and bearings, generally operate in elastohydrodynamic lubrication regime where lubricants are compressed in concentrated contacts and the pressure is extremely high which can be up to giga-pascals [2].…”

Section: Introductionmentioning

confidence: 99%

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A molecular simulation study on transport properties of FAMEs in high-pressure conditions

Chen

Mira

Jiang

2022

Fuel

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Section: Breakdown Of Se Relation Due To High-pressure Solidificationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A molecular simulation study on transport properties of FAMEs in high-pressure conditions

Chen

Mira

Jiang

2022

Fuel

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“…In European climatic conditions, the main raw material for biodiesel production is rapeseed oil, and less often, soybean, sunflower, corn or waste vegetable oils are used [20,21]. Biodiesel produced from rapeseed, called rapeseed methyl ester (RME), is produced in the transesterification process involving the methanolysis of rapeseed oil, which also produces waste glycerol [22][23][24]. The amounts of these undesirable wastes always exceed 10% of the weight of the obtained esters [25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Computational and Experimental Studies on Combustion and Co-Combustion of Wood Pellets with Waste Glycerol

Bala-Litwiniak,

Musiał,

Nabiałczyk

2023

Materials

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The shortage of fossil fuels and their rising prices, as well as the global demand for renewable energy and the reduction in greenhouse gas (GHG) emissions, result in an increased interest in the production of alternative biofuels, such as biodiesel or biomass pellets. In this study, the possibility of utilizing waste glycerol, as an addition to pine pellets intended for heating purposes, has been investigated. The usefulness of pellets containing glycerol additions has been compared in terms of applicable quality standards for wood pellets. The highest values of moisture (4.58%), ash (0.5%) and bulk density (650 kg/m3) were observed for pellets without glycerin waste. The addition of waste glycerol slightly increases the calorific value of the pellet (17.94 MJ/kg for 7.5% additive). A 10-kW domestic biomass boiler has been employed to burn the tested pellets. The consumption of analyzed fuels during boiler operation was determined. The concentration of CO, CO2 and NOx in exhaust gases has also been examined. It was observed that the addition of 7.5% of waste glycerol contributes to the reduction in NOx concentrations by 30 ppm and CO2 by 0.15%. The obtained experimental results were compared with the numerical calculations made with the use of ANSYS Chemkin-Pro. The conducted research indicates the legitimacy of utilizing waste glycerol as an additive to wood pellets. In addition, this type of addition has a positive effect on, among others, the increase in calorific value, as well as lower emissions of combustion products such as NOx and CO2.

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“…Biodiesel produced from rapeseed, called rape methyl ester (RME) is made using the transesterification process involving the methanolysis of rape seed oil [3,4]. Aside from the main product, waste (crude) glycerol is also formed and it is generated always in amounts greater than 10% in relation to the RME produced [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Possibility of the Utilization of Waste Glycerol as an Addition to Wood Pellets

Bala-Litwiniak

Radomiak

2018

Waste Biomass Valor

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Production of liquid biofuels derived from vegetable oils in recent years significantly increased which causes surplus of by-product (waste glycerol) from this process. Therefore it is of great importance to find cheap and fast method of use its utilization. In this study, a possibility of the utilization of technical purity glycerin as an addition to wood pellets intended for heating purposes has been investigated. Usefulness of pellets contained glycerol additions has been compared in terms of applicable quality standards for wood pellets. Effects of waste glycerol addition on concentration of combustion products as well as temperature in heat exchanger have also been examined. The experimental results show that co-combustion of waste glycerol with wood sawdust does not worsen heating efficiency in a standard boiler. Moreover, 4.5 and 7% presence of glycerol in wood pellets correlated to a nearly twofold decrease of NO x concentration in flue gas. Therefore, the use of the waste glycerol as a binder for the production of pellets can be a simple and cost-effective solution of its utilization.

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Could RME biodiesel be potentially harmful to modern engine? solidification process in RME

Cited by 10 publications

References 38 publications

A molecular simulation study on transport properties of FAMEs in high-pressure conditions

A molecular simulation study on transport properties of FAMEs in high-pressure conditions

Computational and Experimental Studies on Combustion and Co-Combustion of Wood Pellets with Waste Glycerol

Possibility of the Utilization of Waste Glycerol as an Addition to Wood Pellets

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