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Enzymatic synthesis of neopentyl glycol-bases biolubricants using biodiesel from soybean and castor bean as raw materials

Author

Listed:
  • Aguieiras, Érika C.G.
  • Cavalcanti, Elisa D.C.
  • da Silva, Priscila R.
  • Soares, Valéria F.
  • Fernandez-Lafuente, Roberto
  • Bessa Assunção, Charles Lima
  • da Silva, José André C.
  • Freire, Denise M.G.

Abstract

Synthetic oleochemical esters represents a growing alternative for mineral oil-based lubricants. In this sense, the present study shows the results of enzymatic synthesis of neopentyl glycol-bases biolubricants using biodiesel from soybean and castor bean as raw materials. The potential of two commercial immobilized lipases, lipase B from Candida antarctica (Novozyme 435) and lipase from Rhizomucor miehei (Lipozyme RM IM), to produce NPG esters in a solvent-free medium was evaluated. High conversions (>95%) were obtained for both raw materials, with both enzymes, but in a shorter reaction time for soybean biodiesel (24 h) than castor biodiesel (48 h). Both enzymes could be successfully reused for six reactions, Novozyme 435 maintained ≥70% of the initial conversion using the two raw materials and Lipozyme RM IM maintained ≥90% of the first reaction conversion using castor biodiesel. The soybean NPG esters showed good viscosity index, higher than 198, and the castor NPG esters showed good pour point, lower than −20 °C, and good oxidative stability, higher than 30 min. The physico-chemical properties of the biolubricants were dependent on the biodiesel source which directly influence the final application of the products.

Suggested Citation

  • Aguieiras, Érika C.G. & Cavalcanti, Elisa D.C. & da Silva, Priscila R. & Soares, Valéria F. & Fernandez-Lafuente, Roberto & Bessa Assunção, Charles Lima & da Silva, José André C. & Freire, Denise M.G., 2020. "Enzymatic synthesis of neopentyl glycol-bases biolubricants using biodiesel from soybean and castor bean as raw materials," Renewable Energy, Elsevier, vol. 148(C), pages 689-696.
    • Handle: RePEc:eee:renene:v:148:y:2020:i:c:p:689-696
    DOI: 10.1016/j.renene.2019.10.156
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    Cited by:

    1. Bahadi, Murad & Salimon, Jumat & Derawi, Darfizzi, 2021. "Synthesis of di-trimethylolpropane tetraester-based biolubricant from Elaeis guineensis kernel oil via homogeneous acid-catalyzed transesterification," Renewable Energy, Elsevier, vol. 171(C), pages 981-993.
    2. Abd Wafti, Nur Sulihatimarsyila & Yunus, Robiah & Lau, Harrison Lik Nang & Choong, Thomas Shean Yaw & Abd-Aziz, Suraini, 2022. "Enzymatic synthesis of palm oil-based trimethylolpropane ester as biolubricant base stock catalyzed by Lipozyme 435," Energy, Elsevier, vol. 260(C).
    3. Nor, Nurazira Mohd & Salih, Nadia & Salimon, Jumat, 2022. "Optimization and lubrication properties of Malaysian crude palm oil fatty acids based neopentyl glycol diester green biolubricant," Renewable Energy, Elsevier, vol. 200(C), pages 942-956.

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