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Title: Practically useful models for kinetics of biodiesel production
Authors: Chhabra, Pulkit
Mosbach, Sebastian
Karimi, Iftekhar A.
Kraft, Markus
Keywords: Engineering::Chemical engineering
Issue Date: 2019
Source: Chhabra, P., Mosbach, S., Karimi, I. A., & Kraft, M. (2019). Practically useful models for kinetics of biodiesel production. ACS Sustainable Chemistry & Engineering, 7(5), 4983-4992. doi:10.1021/acssuschemeng.8b05636
Journal: ACS Sustainable Chemistry and Engineering
Abstract: We develop four kinetic models of varying complexity for biodiesel production. The models incorporate both transesterification and saponification, thereby making them practically applicable. We then propose an iterative parameter estimation algorithm to identify a prefixed number of significant rate constants via sensitivity analysis and estimate their kinetic parameters (A and ΔE) using nonlinear regression. Using experimental data on eight different oils, two alcohols, and two catalysts, we show that our models accurately predict the dynamic concentration profiles of various species during the transesterification of oil. Furthermore, we demonstrate the applicability of the best model (based on the values of Mean Absolute Error, Root Mean Square Error, and Akaike Information Criterion) for 11 additional experiments by predicting the final biodiesel properties with significant accuracy. Finally, using N-way ANOVA, we identify the choice of oil, alcohol, and catalyst as the most significant input factors followed by the operating conditions of the reactor.
ISSN: 2168-0485
DOI: 10.1021/acssuschemeng.8b05636
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Sustainable Chemistry and Engineering, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SCBE Journal Articles

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