Plant-Wide Economic Comparison of Lactic Acid Recovery Processes by Reactive Distillation with Different Alcohols

Su, Chien‐Yuan; Yu, Cheng‐Ching; Chien, I‐Lung; Ward, Jeffrey D.

doi:10.1021/ie303192x

Cited by 50 publications

(35 citation statements)

References 20 publications

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“…The Mg(OH) 2 crystals were filtered and recycled back to fermentation; the R 3 N-lactate complex was thermally decomposed to release lactic acid and the R 3 N was recycled back to the exchange reactor [ 68 , 69 ]. Purification of crude lactic acid product from fermentation broth [ 70 ], in a two-step reaction process, involved the esterification of lactic acid and hydrolysis of the ester, giving the highest purity levels (99.5% wt) [ 71 , 72 ].…”

Section: Methodsmentioning

confidence: 99%

Multi-product biorefineries from lignocelluloses: a pathway to revitalisation of the sugar industry?

Farzad

Mandegari

Guo

et al. 2017

Biotechnol Biofuels

171

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BackgroundDriven by a range of sustainability challenges, e.g. climate change, resource depletion and expanding populations, a circular bioeconomy is emerging and expected to evolve progressively in the coming decades. South Africa along with other BRICS countries (Brazil, Russia, India and China) represents the emerging bioeconomy and contributes significantly to global sugar market. In our research, South Africa is used as a case study to demonstrate the sustainable design for the future biorefineries annexed to existing sugar industry. Detailed techno-economic evaluation and Life Cycle Assessment (LCA) were applied to model alternative routes for converting sugarcane residues (bagasse and trash) to selected biofuel and/or biochemicals (ethanol, ethanol and lactic acid, ethanol and furfural, butanol, methanol and Fischer–Tropsch synthesis, with co-production of surplus electricity) in an energy self-sufficient biorefinery system.ResultsEconomic assessment indicated that methanol synthesis with an internal rate of return (IRR) of 16.7% and ethanol–lactic acid co-production (20.5%) met the minimum investment criteria of 15%, while the latter had the lowest sensitivity to market price amongst all the scenarios. LCA results demonstrated that sugarcane cultivation was the most significant contributor to environmental impacts in all of the scenarios, other than the furfural production scenario in which a key step, a biphasic process with tetrahydrofuran solvent, had the most significant contribution.ConclusionOverall, the thermochemical routes presented environmental advantages over biochemical pathways on most of the impact categories, except for acidification and eutrophication. Of the investigated scenarios, furfural production delivered the inferior environmental performance, while methanol production performed best due to its low reagent consumption. The combined techno-economic and environmental assessments identified the performance-limiting steps in the 2G biorefinery design for sugarcane industry and highlighted the technology development opportunities under circular bioeconomy context.Electronic supplementary materialThe online version of this article (doi:10.1186/s13068-017-0761-9) contains supplementary material, which is available to authorised users.

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Section: Methodsmentioning

confidence: 99%

Multi-product biorefineries from lignocelluloses: a pathway to revitalisation of the sugar industry?

Farzad

Mandegari

Guo

et al. 2017

Biotechnol Biofuels

171

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“…The flash separators are known to operate at low temperature, opposite to some other unit operations used in similar cases, such as reactive distillation in lactic acid production 21, electrodialysis 44, and high‐performance liquid chromatography for synthesis of lactobionic acid 45. This can be translated into a decrease in the separation costs, which is essential since the separation and purification steps can contribute up to 50 % of the production costs 21, 46, 47.…”

Section: Process Schemementioning

confidence: 99%

Selective Oxidation of Arabinose on Gold Catalysts: Process Design and Techno‐economic Assessment

et al. 2021

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The present work focuses on process design and techno‐economic assessment of the oxidation of a pentose sugar present in hemicelluloses, i.e., arabinose, on a supported gold catalyst. The processing plant was designed with Aspen Plus. The arabinose feedstock price has an important impact on the operational performance contributing to almost half of these costs. The feasibility of the overall arabinose oxidation process requires efficient extraction of hemicellulose from the lignocellulosic biomass lowering the feedstock costs.

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“…Para as simulações da hidrogenação de LA foi considerada uma alimentação de 2 % em mol de LA em águatípica para processos fermentativosa 423,15 K, enquanto para ET-LA a composição molar considerada foi 48,2% etanol, 36,3% água, 15,3% lactato de etila e 0,2% ácido láctico (Su et al, 2013), típica da esterificação de ácido láctico com etanol.…”

Section: Metodologiaunclassified

Análise termodinâmica da produção de 1,2-propanodiol a partir de ácido láctico

Marchesan¹,

Oncken²,

Filho³

et al. 2018

Blucher Chemical Engineering Proceedings

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Para que a hidrogenação de ácido láctico possa ser aplicada em grande escala, é importante que as condições de reação sejam analisadas do ponto de vista termodinâmico. Neste trabalho, é analisada a influência da temperatura, pressão e razão molar H2/ácido láctico no equilíbrio da hidrogenação de ácido láctico e de lactato de etila utilizando o software Aspen Plus ® , verificando-se que é possível obter 1,2-propanodiol com conversão e seletividade superiores a 95% a 423 K, pressões maiores que 7 bar e razões H2/LA superiores a 10, condições menos severas que as praticadas experimentalmente na literatura.

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Plant-Wide Economic Comparison of Lactic Acid Recovery Processes by Reactive Distillation with Different Alcohols

Cited by 50 publications

References 20 publications

Multi-product biorefineries from lignocelluloses: a pathway to revitalisation of the sugar industry?

Multi-product biorefineries from lignocelluloses: a pathway to revitalisation of the sugar industry?

Selective Oxidation of Arabinose on Gold Catalysts: Process Design and Techno‐economic Assessment

Análise termodinâmica da produção de 1,2-propanodiol a partir de ácido láctico

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