Chemical Engineering and Science
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Chemical Engineering and Science. 2015, 3(1), 1-6
DOI: 10.12691/ces-3-1-1
Open AccessArticle

Obtaining of Modifiers for Reduced Friction by Еsterification of Waste Glycerol from Biodiesel Production and Sylfat 2

Z. Glavcheva-Laleva1, St. Kerekov2, D. Pavlov3 and Iv. Glavchev4,

1Institute for Organic Chemistry, Bulgarian Academy of Science, Acad. G. Bonchev Street, Building 9, 1113 Sofia

2Managing director “NITIAT” Ltd, Sofia, Bulgaria

3University of Ruse “Angel Kanchev”, 8003 Ruse, Bulgaria

4University of Chemical Technology and Metallurgy, 1756 Sofia, Bulgaria

Pub. Date: May 17, 2015

Cite this paper:
Z. Glavcheva-Laleva, St. Kerekov, D. Pavlov and Iv. Glavchev. Obtaining of Modifiers for Reduced Friction by Еsterification of Waste Glycerol from Biodiesel Production and Sylfat 2. Chemical Engineering and Science. 2015; 3(1):1-6. doi: 10.12691/ces-3-1-1


The esterification of waste glycerol from biodiesel production (WG) ore pure glycerol (PG) with Sylfat 2 were made by catalyst 3% titanium alcoholate (TiAl) for 3 h at 150°C. The quantity of glycerol in WG and the oleic acid (OA) in Sylfat 2 were made with UV-VIS spectra. There UV-VIS and FTIR spectra were shown. Some quantity of free acids was neutralized with methylamine ore with 25% water solution of NH3 and was given FTIR spectra of obtained products. All investigations for characteristics of these products were made with standard method by four ball machine. From WG ore PG and Sylfat 2 were obtained the valuable friction modifiers, comparable with standard compounds.

esterification friction modifier waste glycerol biodiesel production

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[1]  Венко Бешков, Иван Ангелов, Получаване на биогаз, чрез оползотворяване на отпадъчен глицерол, НАУЧНИ ТРУДОВЕ НА РУСЕНСКИЯ УНИВЕРСИТЕТ - 2011, том 50, серия 9.2., 55-58.
[2]  Zhanyou Chi, Denver Pyle, Zhiyou Wen, Craig Frear, Shulin Chen, A laboratory study of producing docosahexaenoic acid from biodiesel-waste glycerol by microalgal fermentation, Process Biochemistry, Vol, 42, Issue 11, November 2007, 1537-1545.
[3]  Afroditi Chatzifragkou, Anna Makri, A. Belka, St. Belloub, M. Mavroua, M. Mastoridou, P. Mystrioti, Gr. Onjaro, G. Aggelis, S. Papanikolaou,, Biotechnological conversions of biodiesel derived waste glycerol by yeast and fungal species, Energy, Vol. 36, Issue 2, February 2011, 1097-1108.
[4]  João M.B.T. Cavalheiro, M. Catarina M.D. de Almeida, Chr. Grandfils, M.M.R. da Fonseca, Poly(3-hydroxybutyrate) production by Cupriavidus necator using waste glycerol, Process Biochemistry, Volume 44, Issue 5, May 2009, 509-515.
[5]  Syed Shams Yazdani, R. Gonzalez, Anaerobic fermentation of glycerol: a path to economic viability for the biofuels industry, Current Opinion in Biotechnology, Energy biotechnology / Environmental biotechnology, Vol. 18, Issue 3, June 2007, 213-219.
[6]  Afroditi Chatzifragkou, D. Dietz, M. Komaitis, An-Ping Zeng, S. Papanikolaou, Effect of biodiesel-derived waste glycerol impurities on biomass and 1,3-propanediol production of Clostridium butyricum VPI 1718, Biotechnology and Bioengineering, Vol. 107, Issue 1, 2010, 76-84.
[7]  WO 2008051330 A1.
[8]  Patent US 20080096777 A1.
[9]  Patent US 20120131847 A.
[10]  Pavlov, D. J., N. N. Gospodinova, I. K. Glavchev. Synthesis and characterization of complex esters for motor and hydraulic oils., Industrial Lubrication and Tribology,, Vol. 56, № 1, (2004), 19-22.
[11]  Z. Glavcheva-Laleva, L.Varadinova, S.Kerekov, D.Pavlov, I.Glavchev, Application of waste glycerol from biodiesel production for obtaining modifiers for friction reduction, Eight National Conference on Chemistry, 26-27 June 2014, Sofia, Bulgaria, p. 17.
[12]  БДС ЕN ISO 660-20.
[13]  БДС 14362-87.