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quality approvals have been obtained in re-refined base oils by several leading lubricant and additive manufacturers [5].
Mercedes-Benz, Volkswagen, Fiat, Ford and MAN all accept high quality re-refined oils. In addition, Mercedes-Benz and Volkswagen have confirmed that re-refined oils can achieve the same performance as new oils.
Sustainability and Environmental benefits There are many sustainability and environmental benefits of the re-refining process. The most important benefits are [6]: • With capturing and re-refining waste oil, the risk of getting waste oil into and harming the environment is eliminated;
• Carbon footprint of re-refined base oil can be reduced up to 50% compared to carbon footprint of the conventional production of base oil [7];
• For re-refining of base oil there is no need for fresh base oil to be produced;
• Increasing their sustainability for companies which use re-refined lubricants that were originally sent as waste oil for re-refining;
• Increased corporate reputation as environmentally friendly company which uses re-refining.
Final remarks Both the recycling and process will improve sustainability and environmental benefits of companies. Both processes will save waste oils from becoming a greater environmental hazard.
With both recycling and re-refining waste oil, certain amounts of fresh crude oil will not be exploited for production of base oil or fuel for heating.
When recycled waste oil is used as fuel for heating there is need for fresh virgin base oil. This would mean the carbon footprint of recycled waste oil is bigger than the carbon footprint of re-refined waste oil.
The best solution for less consumption of virgin base oil, is using re-refined base oil in industrial lubricants.
It can be concluded that companies which re-refine waste oil are more sustainable and environmentally friendly than the companies that recycle waste oil.
12 LUBE MAGAZINE NO.166 DECEMBER 2021
LINK
www.nis.eu
It can also be concluded that the re-refining process gives greater sustainable and environmental benefits as well as higher profit than the recycling process, which would mean that re-refining processes.
The conclusions show that re-refining processes should be introduced wherever possible.
Recycling of waste oil doesn’t have as many sustainable and environmental benefits as re-refining of waste oil and it is less profitable.
References [1] Directive (EU) 2018/851 of the European Parliament and of the Council of 30 May 2018 amending Directive 2008/98/EC on waste
https://eur-lex.europa.eu/legal-content/EN/ TXT/?uri=celex%3A32018L0851
[2] European Union (Withdrawal) Act 2018
https://www.legislation.gov.uk/ukpga/2018/16/ section/3
[3] Uses for Recycled Oil - What Happens to Your Recycled Used Oil
https://www.environment.gov.au/protection/used-oil- recycling/recycling-your-oil/uses-recycled-oil
[4] Basel convention technical guidelines on used oil re-refining or other re-uses of previously used oil
http://www.basel.int/Portals/4/Basel%20Convention/ docs/meetings/sbc/workdoc/old%20docs/tech-r9.pdf
[5] STP Present Used Lube Oil Re-refining;
https://www.stpitaly.eu
[6] Used oil recycling: good for the environment, good for business
https://www.recyclingproductnews.com/article/25604/ used-oil-recycling-good-for-the-environment-good- for-business
[7] Waste Framework Directive revision: European waste oil re-refining industry position
https://www.geir-rerefining.org/wp-content/uploads/ GEIRpositionpaperWFD_2016_FINAL.pdf
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