Material-Efficient Utilization of Waste Oils—Biodegradability and Other Chemical Properties of Vegetable Recycling Oils
- 1 Department of Chemistry, University of Oulu, Oulu, Finland
- 2 Department of Chemistry, University of Oulu, Oulu, Finland
- 3 Department of Chemistry, University of Oulu, Oulu, Finland
Abstract
Material efficiency is nowadays an essential topic to promote the sustainable use of natural resources, waste materials and industrial by-products, in agreement with the principle of sustainable development and LCA (life cycle assessment). In this research it was determined the biodegradation of used vegetable oil based products and their important physico- chemical properties for their suitability in different applications such as chain oil in the forestry equipment and mold oil in concrete casting etc. Biodegradability is a measure of the ecological nature of products, and thus from an environ- mental point of view, is the most important evaluated property in this research. As a result, all measured properties of the studied recycled vegetable oils show that the products are environmentally friendly. Two types of vegetable oil were studied; three chain oils and two mold oils. The degree of biodegradation (BOD 28 ) of the mold oils, was about 77 % and the biodegradation of chain oils was about 60% - 62%. In addition, this paper also presents a process outline for manu- facturing recycling vegetable oils.
- E. keskusliitto, Confederation of Finnish Industries, “Materiaalitehokas Toiminta S??st?? Luontoa ja Rahaa,” 2008, pp. 6-7.
- J. M. Allwood, M. F. Ashby, T. G. Gutowski and E. Worrel, “Material Efficiency: A White Paper,” Resources, Conservation and Recycling, Vol. 55, No. 3, 2011, pp. 362-381. doi:10.1016/j.resconrec.2010.11.002
- K. Huhtinen and R. Lilja, “Materiaalitehokkuuden edist?minen ja J?tteen Ehk?isy Ymp?rist?lupaprosessissa,” Ymp?rist?ministeri?n Opasluonnos, Ministry of the Environment Finland, 2010. www.environment.fi
- R. Lilja, “From Waste Prevention to Promotion of Material Efficiency: Change of Discourse of the Waste Policy in Finland,” Journal of Cleaner Production, Vol. 17, No. 2, 2009, pp. 129-136. doi:10.1016/j.jclepro.2008.03.010
- R. Lilja, “Negotiated Environmental Agreements in Promoting Material Efficiency in Industry—First Steps in Finland,” Journal of Cleaner Production, Vol. 17, No. 9, 2009, pp. 863-872. doi:10.1016/j.jclepro.2009.01.002
- E. Pongrácz, “Through Waste Prevention towards Corporate Sustainability: Analysis of the Concept of Waste and A Review of Attitudes towards Waste Prevention,” Sustainable Development, Vol. 17, 2009, pp. 92-101. doi:10.1002/sd.402
- www.wasteonline.org.uk
- J. Cvengro? and Z. Cvengro?ová, “Used Frying Oils and Fats and Their Utilisation in the Production of Methyl Esters of Higher Fatty Acids,” Biomass and Bioenergy, Vol. 27, No. 2, 2004, pp. 173-181. doi:10.1016/j.biombioe.2003.11.006
- A. Willing, “Lubricants Based on Renewable Resources—An Environmentally Compatible Alternative to Mineral Oil Products,” Chemosphere, Vol. 43, No. 1, 2001, pp. 89-98. doi:10.1016/S0045-6535(00)00328-3
- P. V?h?oja, “Oil Analysis in Machine Diagnostics,” Ph.D. Thesis, Faculty of science, Department of Chemistry, Department of Mechanical Engineering, University of Oulu, Oulu, 2006.
- K. Roppola, T. Kuokkanen, J. R?m?, H. Prokkola and J. Ruotsalainen, “Characterisation of Organic Fractions of Pulp and Paper Mill Wastewater with a Manometric Respirometric Biochemical Oxygen Demand Method and Automatic Chemical Oxygen Demand Analyses,” Chemical Speciation and Bioavailability, Vol. 21, No. 2, 2009, pp. 121-130.
- OECD Guidelines for Testing Chemicals, Summary of Considerations in the Report from the OECD Expert Group on Degradation and Accumulation, 1979.
- M. Karhu, J. Kaakinen, T. Kuokkanen and J. R?m?, “Biodegradation of Light Fuel Oils in Water and Soil as Determined by the Manometric Respirometric Method,” Water, Air and Soil Pollution, Vol. 197, No. 1-4, 2009. pp. 3-14. doi:10.1007/s11270-008-9752-6