Main content area

Biodiesel production from microalgae Nannochloropsis oculata using heterogeneous Poly Ethylene Glycol (PEG) encapsulated ZnOMn2+ nanocatalyst

Vinoth Arul Raj, J., Bharathiraja, B., Vijayakumar, B., Arokiyaraj, S., Iyyappan, J., Praveen Kumar, R.
Bioresource technology 2019 v.282 pp. 348-352
Nannochloropsis, X-ray diffraction, biodiesel, catalysts, catalytic activity, fuel production, methanol, microalgae, nanocomposites, nanomaterials, oils, response surface methodology, scanning electron microscopy, solvents, sonication, temperature, transesterification
In this present work nanocomposite composed of Mn-ZnO capped with Poly Ethylene Glycol (PEG) was utilized as heterogeneous catalyst for the transesterification of oil extracted from Nannochloropsis oculata into biodiesel using methanol as an acyl acceptor. The synthesized Mn-ZnO novel nanocomposite capped with Poly Ethylene Glycol (PEG) was characterized by using SEM and XRD. Lipid contents from the microalgae were extracted by sonication and biphasic solvent method. The process parameters involved for heterogeneous catalysis of N. oculata to biodiesel were optimized and found to be oil to methanol molar ratio of 1:15 (mol:mol), catalyst loading 3.5% (w/w) and reaction temperature of 60 °C for 4 h of reaction time by Response Surface Method. The reusability studies showed that the nano-catalyst can be reused efficiently for 4 cycles. The yield of biodiesel obtained from N. oculata species using Mn-ZnO nanocomposite capped with PEG was 87.5%.