Biodiesel Production Catalyzed by Liquid and Immobilized Enzymes

Optimization and Economic Analysis

Thalles Allan Andrade, Mariano Martin*, Massimiliano Errico, Knud Villy Christensen

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

In this work, the use of enzymes as alternative catalysts for the production of biodiesel was evaluated. Due to the high price of enzymes, process optimization and economical evaluation is essential to evaluate the feasibility of their use. Two alternatives were proposed. The first one evaluated the use of liquid enzyme while the second alternative analyzed the use of immobilized enzyme for the transesterification of castor oil. Both alternatives were investigated as an integral part of the whole production plant and optimized considering the profit of the process as objective function. For an annual biodiesel production capacity of 250,000 tons, the process with liquid enzymes resulted in higher total investment costs due to the complex steps for the biodiesel separation. However, the higher cost of immobilized enzymes requires that this enzyme is reused at least 300 times to obtain a profit similar to the liquid enzyme-based process, which resulted in a production cost of 0.78 US$/kg of biodiesel and a plant profit of 51.6 million US$/year for the defined plant capacity.
Original languageEnglish
JournalChemical Engineering Research & Design
Volume141
Pages (from-to)1-14
ISSN0263-8762
DOIs
Publication statusPublished - Jan 2019

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Immobilized Enzymes
Biofuels
Economic analysis
Biodiesel
Enzymes
Liquids
Profitability
Castor Oil
Costs
Transesterification
Catalysts

Keywords

  • Biodiesel
  • Castor Oil
  • Economic Evaluation
  • Enzymes
  • Process optimization
  • Process simulation

Cite this

@article{f8ee206568ff4fddb5d1220984ec76c7,
title = "Biodiesel Production Catalyzed by Liquid and Immobilized Enzymes: Optimization and Economic Analysis",
abstract = "In this work, the use of enzymes as alternative catalysts for the production of biodiesel was evaluated. Due to the high price of enzymes, process optimization and economical evaluation is essential to evaluate the feasibility of their use. Two alternatives were proposed. The first one evaluated the use of liquid enzyme while the second alternative analyzed the use of immobilized enzyme for the transesterification of castor oil. Both alternatives were investigated as an integral part of the whole production plant and optimized considering the profit of the process as objective function. For an annual biodiesel production capacity of 250,000 tons, the process with liquid enzymes resulted in higher total investment costs due to the complex steps for the biodiesel separation. However, the higher cost of immobilized enzymes requires that this enzyme is reused at least 300 times to obtain a profit similar to the liquid enzyme-based process, which resulted in a production cost of 0.78 US$/kg of biodiesel and a plant profit of 51.6 million US$/year for the defined plant capacity.",
keywords = "Biodiesel, Castor Oil, Economic Evaluation, Enzymes, Process optimization, Process simulation",
author = "Andrade, {Thalles Allan} and Mariano Martin and Massimiliano Errico and Christensen, {Knud Villy}",
year = "2019",
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language = "English",
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Biodiesel Production Catalyzed by Liquid and Immobilized Enzymes : Optimization and Economic Analysis. / Andrade, Thalles Allan; Martin, Mariano; Errico, Massimiliano; Christensen, Knud Villy.

In: Chemical Engineering Research & Design, Vol. 141, 01.2019, p. 1-14.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Biodiesel Production Catalyzed by Liquid and Immobilized Enzymes

T2 - Optimization and Economic Analysis

AU - Andrade, Thalles Allan

AU - Martin, Mariano

AU - Errico, Massimiliano

AU - Christensen, Knud Villy

PY - 2019/1

Y1 - 2019/1

N2 - In this work, the use of enzymes as alternative catalysts for the production of biodiesel was evaluated. Due to the high price of enzymes, process optimization and economical evaluation is essential to evaluate the feasibility of their use. Two alternatives were proposed. The first one evaluated the use of liquid enzyme while the second alternative analyzed the use of immobilized enzyme for the transesterification of castor oil. Both alternatives were investigated as an integral part of the whole production plant and optimized considering the profit of the process as objective function. For an annual biodiesel production capacity of 250,000 tons, the process with liquid enzymes resulted in higher total investment costs due to the complex steps for the biodiesel separation. However, the higher cost of immobilized enzymes requires that this enzyme is reused at least 300 times to obtain a profit similar to the liquid enzyme-based process, which resulted in a production cost of 0.78 US$/kg of biodiesel and a plant profit of 51.6 million US$/year for the defined plant capacity.

AB - In this work, the use of enzymes as alternative catalysts for the production of biodiesel was evaluated. Due to the high price of enzymes, process optimization and economical evaluation is essential to evaluate the feasibility of their use. Two alternatives were proposed. The first one evaluated the use of liquid enzyme while the second alternative analyzed the use of immobilized enzyme for the transesterification of castor oil. Both alternatives were investigated as an integral part of the whole production plant and optimized considering the profit of the process as objective function. For an annual biodiesel production capacity of 250,000 tons, the process with liquid enzymes resulted in higher total investment costs due to the complex steps for the biodiesel separation. However, the higher cost of immobilized enzymes requires that this enzyme is reused at least 300 times to obtain a profit similar to the liquid enzyme-based process, which resulted in a production cost of 0.78 US$/kg of biodiesel and a plant profit of 51.6 million US$/year for the defined plant capacity.

KW - Biodiesel

KW - Castor Oil

KW - Economic Evaluation

KW - Enzymes

KW - Process optimization

KW - Process simulation

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