doi:10.1016/j.jclepro.2018.07.260engAngulo, B.Fraile, J.M.Gil, L.Herrerías, C.I.Bio-Lubricants production from fish oil residue by transesterification with trimethylolpropaneART-2018-107637The fatty acid ethyl esters mixture, a fish oil residue obtained after the extraction of omega-3 polyunsaturated fatty esters, has been converted into mixtures of mono-, di-, and triesters of trimethylolpropane by transesterification at 100-140¿°C under vacuum with sodium ethoxide as catalyst. This method has shown to be more efficient than the enzymatic transesterification using commercially available lipases. The crude reaction mixture (84% conversion of ethyl esters), enriched in trimethylolpropane triesters (96% selectivity) was characterized and its properties compared with those of the starting ethyl esters mixture and the trimethylolpropane esters obtained from vegetal sources.2018http://zaguan.unizar.es/record/7969910.1016/j.jclepro.2018.07.260http://zaguan.unizar.es/record/79699oai:zaguan.unizar.es:79699info:eu-repo/grantAgreement/ES/DGA/E37-17Rinfo:eu-repo/grantAgreement/ES/MINECO/CTQ2014-52367-Rinfo:eu-repo/grantAgreement/ES/UZ/OTRI-2015-0231JOURNAL OF CLEANER PRODUCTION 202 (2018), 81-87by-nc-ndhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccess