Exergy analysis of a biorefinery process for co-production of third-generation L-lactic acid and electricity from Eucheuma denticulatum residues

This paper evaluates the thermodynamic performance of three different l-lactic acid (LLA) biorefinery scenarios, utilizing macroalgae cellulosic residue, namely Eucheuma denticulatum residues (EDRs), as raw materials. To establish exergy analysis, the thermodynamic properties of each biorefinery sce...

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Main Authors: Chung, M.R.W.Y., Tan, I.S., Foo, H.C.Y., Lam, M.K.
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.28633 /
Published: Elsevier Ltd 2022
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85121672967&doi=10.1016%2fj.energy.2021.122968&partnerID=40&md5=d0e58f69873abf3fed262c86e0d0b61a
http://eprints.utp.edu.my/28633/
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spelling utp-eprints.286332022-03-07T10:10:42Z Exergy analysis of a biorefinery process for co-production of third-generation L-lactic acid and electricity from Eucheuma denticulatum residues Chung, M.R.W.Y. Tan, I.S. Foo, H.C.Y. Lam, M.K. This paper evaluates the thermodynamic performance of three different l-lactic acid (LLA) biorefinery scenarios, utilizing macroalgae cellulosic residue, namely Eucheuma denticulatum residues (EDRs), as raw materials. To establish exergy analysis, the thermodynamic properties of each biorefinery scenario was obtained through process simulation using Aspen Plus® V10. It was found that microwave-assisted autohydrolysis (MAA) was feasible in minimizing the amount of EDRs needed by 70.2 to produce 1000 kg/h of LLA. The fermentation unit, wastewater treatment (WWT) unit, and combined heat and power (CHP) unit were ranked top three for the occurrence of exergy destruction. Both the LLA recovery unit (99.37) and MAA pretreatment unit (99.68) were found to be highly exergetically efficient. Among the three scenarios, Scenario III, which was integrated with power generation and a proper waste management system, had the highest functional exergy efficiency (22.12) and normalized exergy destruction (0.73). It demonstrated the highest functionality due to the prevention of material losses by converting waste streams into value-added products and reducing reliance on fossil-fuel derived energy for plant operation. The valuable information from exergy analysis provides theoretical guidance for performance enhancement in a macroalgae-based biorefinery to produce LLA, either with process integration or technology advancement. © 2021 Elsevier Ltd Elsevier Ltd 2022 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85121672967&doi=10.1016%2fj.energy.2021.122968&partnerID=40&md5=d0e58f69873abf3fed262c86e0d0b61a Chung, M.R.W.Y. and Tan, I.S. and Foo, H.C.Y. and Lam, M.K. (2022) Exergy analysis of a biorefinery process for co-production of third-generation L-lactic acid and electricity from Eucheuma denticulatum residues. Energy, 242 . http://eprints.utp.edu.my/28633/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description This paper evaluates the thermodynamic performance of three different l-lactic acid (LLA) biorefinery scenarios, utilizing macroalgae cellulosic residue, namely Eucheuma denticulatum residues (EDRs), as raw materials. To establish exergy analysis, the thermodynamic properties of each biorefinery scenario was obtained through process simulation using Aspen Plus® V10. It was found that microwave-assisted autohydrolysis (MAA) was feasible in minimizing the amount of EDRs needed by 70.2 to produce 1000 kg/h of LLA. The fermentation unit, wastewater treatment (WWT) unit, and combined heat and power (CHP) unit were ranked top three for the occurrence of exergy destruction. Both the LLA recovery unit (99.37) and MAA pretreatment unit (99.68) were found to be highly exergetically efficient. Among the three scenarios, Scenario III, which was integrated with power generation and a proper waste management system, had the highest functional exergy efficiency (22.12) and normalized exergy destruction (0.73). It demonstrated the highest functionality due to the prevention of material losses by converting waste streams into value-added products and reducing reliance on fossil-fuel derived energy for plant operation. The valuable information from exergy analysis provides theoretical guidance for performance enhancement in a macroalgae-based biorefinery to produce LLA, either with process integration or technology advancement. © 2021 Elsevier Ltd
format Article
author Chung, M.R.W.Y.
Tan, I.S.
Foo, H.C.Y.
Lam, M.K.
spellingShingle Chung, M.R.W.Y.
Tan, I.S.
Foo, H.C.Y.
Lam, M.K.
Exergy analysis of a biorefinery process for co-production of third-generation L-lactic acid and electricity from Eucheuma denticulatum residues
author_sort Chung, M.R.W.Y.
title Exergy analysis of a biorefinery process for co-production of third-generation L-lactic acid and electricity from Eucheuma denticulatum residues
title_short Exergy analysis of a biorefinery process for co-production of third-generation L-lactic acid and electricity from Eucheuma denticulatum residues
title_full Exergy analysis of a biorefinery process for co-production of third-generation L-lactic acid and electricity from Eucheuma denticulatum residues
title_fullStr Exergy analysis of a biorefinery process for co-production of third-generation L-lactic acid and electricity from Eucheuma denticulatum residues
title_full_unstemmed Exergy analysis of a biorefinery process for co-production of third-generation L-lactic acid and electricity from Eucheuma denticulatum residues
title_sort exergy analysis of a biorefinery process for co-production of third-generation l-lactic acid and electricity from eucheuma denticulatum residues
publisher Elsevier Ltd
publishDate 2022
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85121672967&doi=10.1016%2fj.energy.2021.122968&partnerID=40&md5=d0e58f69873abf3fed262c86e0d0b61a
http://eprints.utp.edu.my/28633/
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score 11.62408

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