Multi-objective optimization of an industrial ethanol distillation system for vinasse reduction – A case study

Silva, Rodrigo; Torres, Carmen M.; Bonfim-Rocha, Lucas; Lima, O. C. Motta; Coutu, Arnaud; Jiménez, Laureano; Jorge, Luíz Mário de Matos

doi:10.1016/j.jclepro.2018.02.179

Cited by 24 publications

(4 citation statements)

References 29 publications

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“…Currently, the alcohol industry has adopted several alternatives to modify the ethanol production process to make it more efficient. Among these alternatives, the use of reboilers in the distillation process allows a reduction of approximately 16% in vinasse production [ 7 ]. Despite these efforts, population growth and expanding automobile use continue to lead to increased production of vinasse, and the environmental impact of its storage or its traditional uses, such as fertigation, continue to cause environmental issues in water and soil quality [ 1 ].…”

Section: Introductionmentioning

confidence: 99%

Validation by Molecular Dynamics of the Major Components of Sugarcane Vinasse, On a Surface of Calcium Carbonate (Calcite)

et al. 2021

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There is ongoing interest in the alcohol industry to significantly reduce and/or add value to the liquid residue, vinasse, produced after the distillation and rectification of ethanol from sugar cane. Vinasse contains potassium, glycerol, and a protein component that can cause environmental issues if improperly disposed of. Currently, some industries have optimized their processes to reduce waste, and a significant proportion of vinasse is being considered for use as an additive in other industrial processes. In the manufacture of cement and asphalt, vinasse has been used in the mixtures at low concentrations, albeit with some physical and mechanical problems. This work is the first molecular approximation of the components of the sugar cane vinasse in an industrial context, and it provides atomic details of complex molecular events. In the current study, the major components of sugar cane vinasse, alone or complexed on the surface of calcium carbonate, were modeled and simulated using molecular dynamics. The results showed that the protein component, represented by the mannoprotein Mp1p, has a high affinity for forming hydrogen bonds with potassium and glycerol in the vinasse. Additionally, it provides atomic stability to the calcium carbonate surface, preserving the calcite crystalline structure in the same way potassium ions interact with the carbonate group through ion–dipole interactions to improve the cohesion of the modeled surface. On the contrary, when the glycerol molecule interacts with calcium carbonate using more than two hydrogen bonds, it triggers the breakdown of the crystalline structure of calcite expanding the ionic pair.

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Section: Introductionmentioning

confidence: 99%

Validation by Molecular Dynamics of the Major Components of Sugarcane Vinasse, On a Surface of Calcium Carbonate (Calcite)

et al. 2021

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“…However, major defect of the conventional distillation is required a great deal of energy consumption to achieve the separation task (Kiss and Ignat, 2012). In addition, a large amount of carbon dioxide emissions will cause environmental pollution (Silva et al, 2018;Todd and Baroutian, 2017;Wang et al, 2019b). Therefore, intensified distillation processes must be developed to overcome the above issues achieving the performance of energy-saving, cleaner production and environmental protection (Matsuda et al, 2012;Sharan et al, 2018;Silva et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Investigation of energy-saving azeotropic dividing wall column to achieve cleaner production via heat exchanger network and heat pump technique

Yang

Jin

Shen

et al. 2019

Journal of Cleaner Production

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“…Entretanto, o uso de vinhaça em excesso nas lavouras pode causar mudanças na qualidade do solo, como salinização, redução da alcalinidade e aumento de fitotoxicidade (SILVA et al, 2018). Por isso, é importante o monitoramento por meio de análises do solo.…”

Section: Vinhaçaunclassified

“…subproduto. De acordo com o modelo apresentado porSilva et al (2018), a coluna de destilação composta pelo sistema de refervedores proporciona uma redução de aproximadamente 15 % no volume de vinhaça produzido em comparação com o sistema de injeção de vapor. Desta forma, é evitado o aumento de volume de vinhaça por diluição(SILVA et al, 2017).…”

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Avaliação comparativa de processos para obtenção de bioetanol hidratado e anidro de 1ª e 2ª gerações utilizando a modelagem de estágios de não equilíbrio

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Multi-objective optimization of an industrial ethanol distillation system for vinasse reduction – A case study

Cited by 24 publications

References 29 publications

Validation by Molecular Dynamics of the Major Components of Sugarcane Vinasse, On a Surface of Calcium Carbonate (Calcite)

Validation by Molecular Dynamics of the Major Components of Sugarcane Vinasse, On a Surface of Calcium Carbonate (Calcite)

Investigation of energy-saving azeotropic dividing wall column to achieve cleaner production via heat exchanger network and heat pump technique

Avaliação comparativa de processos para obtenção de bioetanol hidratado e anidro de 1ª e 2ª gerações utilizando a modelagem de estágios de não equilíbrio

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