Technoeconomics of sugar cane bagasse valorization to lactic acid using pinch technology: distillation vs reactive distillation

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dc.contributor.authorMaity, Sunil K.
dc.contributor.authorAgrawal, Deepti
dc.contributor.authorGadkari, Siddharth
dc.contributor.authorVanapalli, Kumar Raja
dc.contributor.authorYong, Yang-Chun
dc.contributor.authorZhu, Daochen
dc.contributor.authorChen, Chang
dc.contributor.authorKumar, Vinod
dc.date.accessioned2025-05-30T09:47:44Z
dc.date.available2025-05-30T09:47:44Z
dc.date.freetoread2025-05-30
dc.date.issued2025-05-12
dc.date.pubOnline2025-04-30
dc.description.abstractSugar cane is one of the largest agricultural crops, and sugar cane bagasse (SCB), a major waste from sugar cane processing, is an abundant and inexpensive source of fermentable sugars for producing diverse platform chemicals. The present study evaluates the technoeconomic viability of L (+) lactic acid (LA) production from SCB with different stand-alone process scenarios modeled using the pinch method. It critically evaluates various cost-contributing factors when a sugar-rich hydrolysate is obtained via two different pretreatment methods: dilute acid and alkali. The cost-benefit of LA purification by conventional distillation (CD) is further compared to reactive distillation (RD). The pinch method cuts the LA manufacturing costs by 10-11%. Alkali pretreatment combined with RD involves a lower capital investment and utility consumption than the CD counterpart and slightly less LA manufacturing cost. However, LA production via dilute acid pretreatment and purification by RD emerges as the most profitable scenario due to capital investment, utility demand, and chemical consumption savings. This scenario offers the minimum LA selling price of 2.3 US$/kg for an 8.5% discount factor and a 5 year payback period. However, for a 20 year plant life and 2.5 US$/kg factory-gate LA selling price, the internal rate of return was 31% and the payback period was 4.4 years for an 8.5% discount factor.
dc.description.journalNameACS Sustainable Chemistry & Engineering
dc.format.extentpp. 6538-6553
dc.identifier.citationMaity SK, Agrawal D, Gadkari S, et al., (2025) Technoeconomics of sugar cane bagasse valorization to lactic acid using pinch technology: distillation vs reactive distillation. ACS Sustainable Chemistry & Engineering, Volume 13, Issue 18, May 2025, pp. 6538-6553
dc.identifier.eissn2168-0485
dc.identifier.elementsID673101
dc.identifier.issn2168-0485
dc.identifier.issueNo18
dc.identifier.urihttps://doi.org/10.1021/acssuschemeng.5c00223
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/23943
dc.identifier.volumeNo13
dc.languageEnglish
dc.language.isoen
dc.publisherAmerican Chemical Society (ACS)
dc.publisher.urihttps://pubs.acs.org/doi/10.1021/acssuschemeng.5c00223
dc.rightsAttribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectlactic acid
dc.subjectsugar cane bagasse
dc.subjectprocess modeling
dc.subjectpinch analysis
dc.subjectreactive distillation
dc.subject40 Engineering
dc.subject34 Chemical Sciences
dc.subject3401 Analytical chemistry
dc.subject4004 Chemical engineering
dc.titleTechnoeconomics of sugar cane bagasse valorization to lactic acid using pinch technology: distillation vs reactive distillation
dc.typeArticle
dc.type.subtypeJournal Article
dcterms.dateAccepted2025-04-18

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