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NANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICS, 2021, 12 (6), P. 808–817

Application of biosynthesized nano-catalyst for biodiesel synthesis and impact assessment of factors influencing the yield

C. P. Gandhi – Department of Mathematics, Rayat Bahra University, Mohali, Punjab, 140301, India; cchanderr@gmail.com
Rajni Garg – Department of Chemistry, Rayat Bahra University, Mohali, Punjab, 140301, India; rajnigarg@science.org.in
Nnabuk Okon Eddy – Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka, Enugu State, 410001, Nigeria; okon.nnabuk@unn.edu.ng

This study presents a green process to synthesize biodiesel using biosynthesized nano-catalyst and a novel methodology for analyzing the impact of influencing factors – methanol/oil ratio, the concentration of nano-catalyst, temperature, and time of reactions- on the yield of biodiesel obtained by heterogeneous nano-catalyst-based transesterification reaction. Nano-calcium oxide (nano-CaO) was obtained as a heterogeneous nano-catalyst using waste eggshells. Waste cooking oil was treated with methanol and nano-catalyst at varying methanol: oil ratios (4 – 14:1), nano-catalyst concentration (0.5 – 2 %), time of reaction (3 – 4.5 hrs), and temperature (50 – 65 °C). The superiority and effectiveness of the proposed transesterification indices were accomplished making use of Deluca and Termini fuzzy entropy weighted indexes to obtain optimal reaction conditions with 95.49 % biodiesel yield.

Keywords: nano-catalyst, biodiesel, transesterification, fuzzy entropy, neutrosophic entropy.

DOI 10.17586/2220-8054-2021-12-6-808-817

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