Impact of residual glycerides on viscosity of biodiesel (waste and rapeseed oil blends)

• Autorzy: Jurac Z. , Pomenić L
• Języki publikacji: EN

Abstrakty

EN

Purpose: Biodiesel, mixture of fatty acid methyl esters is a biodegradable alternative fuel that is obtained from renewable sources as a vegetable oils or animal fats. Use of waste cooking oils reduce the cost of raw materials for biodiesel production and also reduces the environment pollution. Moreover, pure edible vegetable oils for biodiesel production have an ethical significance because food is used to produce fuel. The aim of this work is a presentation of effects that residual glycerides have on kinematic viscosity values of biodiesels produced from the various waste cooking oils with crude rapeseed oil blends. Kinematic viscosity is one of the most important property of biodiesel and it directly depend on raw material composition. Design/methodology/approach: This article includes analysis and estimation of the effect that residual mono-, di- and triglycerides which remain in the biodiesels after transesterification processes have on their kinematic viscosities. Results obtained for biodiesel produced from various percentages of waste cooking oils and crude rapeseed oil blends were presented. Findings: Investigation during biodiesels production showed that the biggest impact on biodiesel kinematic viscosity have monoglycerides, diglycerides, and then at the end triglycerides. From these follows that kinematic viscosity of biodiesel is not a function only of the conversion (transesterification process) but also of the residual incompletely reacted glycerides which amount depend of the waste cooking oils percentage in raw material blends used for biodiesels production. Research limitations/implications: These presented results are the closed solution considering the used raw materials. Quality and chemical composition of the used waste cooking oils are quite different from each other, which affects the quality of the produced biodiesels. Because of that these results should be an indicator for the further testing and improvements to achieve optimization of transesterification process which can reduce the amount of the residual glycerides in the biodiesel. Practical implications: The results presented in the paper can be applied in the industry for estimation and selection of the optimal percentages of waste cooking oils and crude rapeseed oil blends for the biodiesel production. Originality/value: This paper presents research of the influence of residual glycerides on kinematic viscosity of biodiesels produced from the various waste cooking oils and crude rapeseed oil blends. Application of these research can leads to the better kinematic viscosity value of produced biodiesel with optimization of the transesterification process.

Słowa kluczowe

EN

biodiesel production; waste cooking oils; crude rapeseed oil; residual glycerides; kinematic viscosity

PL

produkcja paliwa ekologicznego; glicerydy szczątkowe; lepkość kinematyczna; olej rzepakowy surowy; odpady olejowe

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2013
• Tom: Vol. 59, nr 2
• Strony: 75--79
• Opis fizyczny: Bibliogr. 15 poz., rys., tab.

Twórcy

autor

Jurac Z.

• Polytechnic of Karlovac, Trg J.J.Strossmayera 9, 47-000 Karlovac, Croatia

autor

Pomenić L

• Department of Materials Science and Engineering, Faculty of Engineering, University of Rijeka, Vukovarska 58, 51-000 Rijeka, Croatia

Bibliografia

• [1] R.H. Kozłowski, E. Kozłowska, LL.M., The polish proposal for environmental protection, Journal of Achievements in Materials and Manufacturing Engineering 55/1 (2012) 121-128.
• [2] R. Nowosielski, A. Zajdel, Recycling’s technology, Journal of Achievements in Materials and Manufacturing Engineering 21/2 (2007) 85-88.
• [3] R. Nowosielski, M. Spilka, Sustainable technological process as an element of the sustainable development strategy realisation, Journal of Achievements in Materials and Manufacturing Engineering 48/2 (2011) 200-208.
• [4] J.V. Gerpen, Biodiesel processing and production, Fuel Processing Technology 86 (2005) 1097-1098.
• [5] M. Arbelaez, M. Rivera, Conceptual design of a process for producing biodiesel vegetable oils from some Colombians. Eafit University, Medellín, 2007.
• [6] C.A. Guerrero F., A. Guerrero-Romero, F.E J.M. Marchetti, A summary of the available technologies for biodiesel production based on a comparison of different feedstock’s properties, Process Safety and Environmental Protection 90 (2012) 157-163.
• [7] M.Stoytcheva (Ed.), Biodiesel production from waste cooking oil, Biodiesel - Feedstock’s and Processing Technologies, InTech, Sierra, 2011.
• [8] Z. Pawlak, T. Rauckyte, A. Oloyede, Oil, grease and used petroleum oil management and environmental economic issues, Journal of Achievements in Materials and Manufacturing Engineering 26/1(2008) 11-17.
• [9] I.M. Atadashi, M.K. Aroua , A. Abdul Aziz, High quality biodiesel and its diesel engine application- A review, Renewable and Sustainable Energy Reviews 14 (2010) 1999-2008.
• [10] H. Fukuda, A. Kondo, H. Noda, Review biodiesel fuel production by transesterification of oils, Journal of bioscience and bioengineering 92 (2001) 405-416.
• [11] L.C. Meher, D. Vidya Sagar, S.N. Naik, Technical aspects of biodiesel production by transesterification-a review, Renewable and Sustainable Energy Reviews 10 (2006) 248-268.
• [12] X. Meng, G. Chen, Y. Wang, Biodiesel production from waste cooking oil via alkali catalyst and its engine test. Fuel Processing Technology 89 (2008) 851-858.
• [13] Z. Yaakob, M. Mohammada, M. Alherbawi, Z. Alam, K. Sopian,. Overview of the production of biodiesel from Waste cooking oil, Renewable and Sustainable Energy Reviews 18 (2013) 184-193.
• [14] EN 590:1993 Diesel Fuel Specification.
• [15] Z. Jurac, V. Zlatar, Optimization of raw material mixtures in the production of biodiesel from vegetable and used frying oils regarding quality requirements in terms of cold flow properties, Fuel Processing Technology 106 (2013) 108-113.