The impact of biodiesel and alternative diesel fuel components on filter blocking through accelerated testing on a novel high pressure common rail non-firing rig

Gopalan, Kesavan; Raikova, Sofia; Smith, Christopher R.; Bannister, Christopher D; Savvoulidi, Magdalena; Chrysafi, S S; Johnston, Nigel; Chuck, Christopher J.

doi:10.1016/j.fuel.2020.118850

Cited by 7 publications

(3 citation statements)

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“…So while FAME will be oxidized by the formation of these polar radicals, the solid formation is also observed for B0 fuels, as well as hydrocarbon surrogates. 218 It is therefore likely that, although HVO will reduce oxidation issues on storage, however, oxidation in vehicles will remain an issue requiring antioxidants or alternative management strategies.…”

Section: Future Perspectivesmentioning

confidence: 99%

“…Recent research, on specifically designed engine rigs used to mimic the running of an actual vehicle 114 have shown that the formation of such solids is mainly attributed to the small polar impurities present in all diesel fuels, when they react to the higher pressures and temperatures registered in modern common rail diesel engines. So while FAME will be oxidized by the formation of these polar radicals, the solid formation is also observed for B0 fuels, as well as hydrocarbon surrogates 218 . It is therefore likely that, although HVO will reduce oxidation issues on storage, however, oxidation in vehicles will remain an issue requiring antioxidants or alternative management strategies.…”

Section: Future Perspectivesmentioning

confidence: 99%

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Oxidative stability of biodiesel: recent insights

Longanesi

Pereira

Johnston

et al. 2021

Biofuels Bioprod Bioref

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Biodiesel, the fatty acid methyl ester (FAME) of vegetable and animal oil, is now used extensively worldwide, with blends of up to 7% common. The blending level is still somewhat limited due to a perceived susceptibility of these fuels to oxidation. Oxidation follows a number of pathways, with the primary mechanism being auto-oxidation, a radical process that results in the production of a range of oxygenated components. These eventually increase the viscosity of the fuel and form deposits detrimental to operation. Further fuel properties are also heavily reliant on the level of oxidation. As such, one of the main challenges in the use of biodiesel is its long-term instability when stored. Typically synthetic antioxidants have been used to address this issue; however, these systems can also add to the formation of deposits, as well as hazardous emissions, on combustion. Recently, research has focused on novel antioxidant development mainly from plant extracts, although there are a number of other routes for improved performance, including the commercialization of hydrogenated vegetable oil (HVO), a prominent alternative to FAME-based biodiesel due to its higher stability, straight chain paraffin composition, and better cold flow properties. In this review, the factors that promote this oxidation are presented, including molecular composition, metal contamination, temperature and light exposure, as well as the latest findings on the inclusion of HVO, the current state-of-the-art analytical techniques employed, and the impact of higher pressure injection systems on vehicles that demonstrate deposit formation is not solely due to the unsaturated biodiesel components.

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Section: Future Perspectivesmentioning

confidence: 99%

Section: Future Perspectivesmentioning

confidence: 99%

Oxidative stability of biodiesel: recent insights

Longanesi

Pereira

Johnston

et al. 2021

Biofuels Bioprod Bioref

Self Cite

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show abstract

“…While short-chain alcohols, biodiesels and HVOs from 1G and 2G feedstocks are the current solution to fossil fuel mitigation in the transport sector, these are additives that, at high concentrations, compromise fuel quality [ 109 , 110 ]. Direct replacement of fossil-derived base-fuel with straight and cyclic hydrocarbons of varying C-chain lengths and degrees of saturation is therefore desirable [ 11 ].…”

Section: Engineering Microbial Metabolisms For Advanced Biofuelsmentioning

confidence: 99%

Microbial pathways for advanced biofuel production

Love

2022

Biochemical Society Transactions

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Decarbonisation of the transport sector is essential to mitigate anthropogenic climate change. Microbial metabolisms are already integral to the production of renewable, sustainable fuels and, building on that foundation, are being re-engineered to generate the advanced biofuels that will maintain mobility of people and goods during the energy transition. This review surveys the range of natural and engineered microbial systems for advanced biofuels production and summarises some of the techno-economic challenges associated with their implementation at industrial scales.

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