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Using SVM-RSM and ELM-RSM Approaches for Optimizing the Production Process of Methyl and Ethyl Esters

doi: 10.3390/en11112889
The production of a desired product needs an effective use of the experimental model. The present study proposes an extreme learning machine (ELM) and a support vector machine (SVM) integrated with the response surface methodology (RSM) to solve the complexity in optimization and prediction of the ethyl ester and methyl ester production process. The novel hybrid models of ELM-RSM and ELM-SVM are further used as a case study to estimate the yield of methyl and ethyl esters through a trans-esterification process from waste cooking oil (WCO) based on American Society for Testing and Materials (ASTM) standards. The results of the prediction phase were also compared with artificial neural networks (ANNs) and adaptive neuro-fuzzy inference system (ANFIS), which were recently developed by the second author of this study. Based on the results, an ELM with a correlation coefficient of 0.9815 and 0.9863 for methyl and ethyl esters, respectively, had a high estimation capability compared with that for SVM, ANNs, and ANFIS. Accordingly, the maximum production yield was obtained in the case of using ELM-RSM of 96.86% for ethyl ester at a temperature of 68.48 °C, a catalyst value of 1.15 wt. %, mixing intensity of 650.07 rpm, and an alcohol to oil molar ratio (A/O) of 5.77; for methyl ester, the production yield was 98.46% at a temperature of 67.62 °C, a catalyst value of 1.1 wt. %, mixing intensity of 709.42 rpm, and an A/O of 6.09. Therefore, ELM-RSM increased the production yield by 3.6% for ethyl ester and 3.1% for methyl ester, compared with those for the experimental data.
- Islamic Azad University of Hamedan Iran (Islamic Republic of)
- An Giang University Viet Nam
- Islamic Azad University of Falavarjan Iran (Islamic Republic of)
- Bauhaus University, Weimar Germany
- King Saud University Saudi Arabia
ddc:500, Technology, ddc:600, bk:31, 670, bk:54, ddc:000, biodiesel, climate protection, bk:33, Big data analytics, bk:35, response surface methodology, extreme learning machine, Big data, support vector machine, 000, T, Optimierung, 500, bk:05, 600, state of the art, OA-Publikationsfonds2018, hybrid methods, extreme learning machine (ELM), machine learning, response surface methodology (RSM), support vector machine (SVM), Biodiesel, optimization
ddc:500, Technology, ddc:600, bk:31, 670, bk:54, ddc:000, biodiesel, climate protection, bk:33, Big data analytics, bk:35, response surface methodology, extreme learning machine, Big data, support vector machine, 000, T, Optimierung, 500, bk:05, 600, state of the art, OA-Publikationsfonds2018, hybrid methods, extreme learning machine (ELM), machine learning, response surface methodology (RSM), support vector machine (SVM), Biodiesel, optimization
citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).48 popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.Top 1% influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).Top 10% impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.Top 10%
