Investigation of the effect of detergent-dispersant additives on the oxidation stability of biodiesel, diesel fuel and their blends

Ádám Beck, György Pölczmann, Zoltán Eller, J. Hancsók

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Basic materials of biodiesels and molecular structure of different biodiesels were discussed with special focus on their oxidation stability and post-additization. Commercial biodiesels produced from rapeseed oil and used cooking oil were blended to diesel fuel in 5%, 7%, and 10% mass fraction. The samples were stored at ambient temperature for one year to simulate the effects of strategic storage and/or long stock turnover rate. Following the one year storage period the samples were treated with BHT antioxidant and/or succinic type detergent-dispersant additives in 300mgkg-1, 600mgkg-1 and 900mgkg-1 concentrations. BHT was applied as antioxidant additive, while the detergent-dispersant additives were either newly developed additives (polyisobutylene succinic anhydride derivatives containing fatty acid methyl ester in their molecular structure) or commercial ones. Structure of the developed additives and their mechanism is described in detail. Rancimat and Seta TOST devices were applied to evaluate the effect of the additives on the oxidation stability of the samples. It was found that the decrease of oxidation stability during storage can be partially compensated with post-additization by suitable detergent-dispersant additives. Oxidation of biodiesels during Rancimat measurement was investigated with infrared spectroscopy. The results showed that during the thermal oxidation fatty acid methyl esters decompose to carbonyl, carboxyl and hydroxyl compounds, while cis-trans isomerization also occurs.

Original languageEnglish
Pages (from-to)328-336
Number of pages9
JournalBiomass and Bioenergy
Volume66
DOIs
Publication statusPublished - 2014

Fingerprint

dispersant
diesel fuel
Detergents
biodiesel
detergent
Diesel fuels
Biodiesel
blended foods
detergents
oxidation
Oxidation
succinic acid
chemical structure
Antioxidants
Fatty acids
antioxidant
Molecular structure
ester
Esters
fatty acid

Keywords

  • Additive
  • Biodiesel
  • Detergent-dispersant
  • Diesel fuel
  • Oxidation stability
  • Rancimat

ASJC Scopus subject areas

  • Forestry
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal
  • Agronomy and Crop Science

Cite this

Investigation of the effect of detergent-dispersant additives on the oxidation stability of biodiesel, diesel fuel and their blends. / Beck, Ádám; Pölczmann, György; Eller, Zoltán; Hancsók, J.

In: Biomass and Bioenergy, Vol. 66, 2014, p. 328-336.

Research output: Contribution to journalArticle

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