Energy analysis of the ethanol industry considering vinasse concentration and incineration

Fukushima, Nilton Asao; Palacios-Bereche, Milagros Cecilia; Palacios‐Bereche, Reynaldo; Nebra, Sílvia A.

doi:10.1016/j.renene.2019.04.085

Cited by 24 publications

(13 citation statements)

References 8 publications

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“…The incineration of vinasse is used as secondary treatment to the concentration of vinasse up to 60-65 ºBrix [11,12]. With this technology, potassium ashes, marketable as fertilizer are obtained.…”

Section: Introductionmentioning

confidence: 99%

Techno-Economic Analysis of Vinasse Treatment Alternatives Through Process Simulation: A Case Study of Cuban Distillery

Llerena

Ones

Cárdenas

et al. 2021

Preprint

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Purpose Vinasse is one of the organic industrial effluents with major polluting effect. The objective of this work was to perform a techno-economic assessment of vinasses treatment alternatives for valorization of this waste through process simulation with Aspen Hysys v10.0. Methods Four alternatives were studied: (A_1) incineration and electricity generation, (A_2) desalinization, (A_3) anaerobic digestion and electricity generation and (A_4) drying. The selected packages for the evaluation and prediction of properties were: Lee-Kesler-Plöcker and NBS Steam, NRTL-Ideal, Peng-Robinson-Stryjer-Vera and NBS Steam and NRTL-Ideal respectively; the validation in these cases was carried out with data reported in the literature. The economic evaluation was carried according to the changes that each alternative determines in each one of the elements of effective cash flow comparing with the actual condition. Results With the alternative A_1, fertilizers ashes are obtained removing all the residual and the energy generation. By the alternative A_2, fertilizers salts and desalinate vinasses (for animal food) were obtained. By the alternative A_3, energy is generated from biogas. By the alternative A_4, dry vinasse is obtained which is used as fertilizer and animal food. Conclusion The polluting effect of the vinasse can be reduced with the proposed treatment alternatives. It was showed that the alternatives are feasible, being the alternative A_1 the best, with a NPV of $ 1.29 MMUSD, IRR 25.5% and DPBP 2.7 years. Process simulation are a valuable supporting tool when making decisions in investment projects for valorization of vinasse from the ethanol industry.

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Section: Introductionmentioning

confidence: 99%

Techno-Economic Analysis of Vinasse Treatment Alternatives Through Process Simulation: A Case Study of Cuban Distillery

Llerena

Ones

Cárdenas

et al. 2021

Preprint

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“…A treatment applied to this residue can turn it into by-products with a certain economic value and at the same time, the negative impact on the environment caused by its incorrect disposal, can be reduced. There are many alternative treatments for this residual (Christofoletti et al, 2013), such as: fertirrigation (Mornadini and Quaia, 2013), recirculation to the fermentation stage to be used as dilution water of molasses (Castro, 2009), compost production (Conil, 2005), production of forage or torula yeast (Chanfón and Lorenzo, 2014), anaerobic digestion (Parsaee et al, 2019), concentration and desalination of vinasses (Pérez and Garrido, 2008), concentration and incineration of vinasses (Rocha et al, 2007;Akrama et al, 2015;Fukushima et al, 2019), fluidizing additive to raw cement pastes (Castro, 2009), oxidation with supercritical water (Arteaga et al, 2014) and electrocoagulation (Ojeda and Hing, 2010;Eco-potassium, 2015). After fertirrigation, animal feeding is the second alternative most widely used for vinasses in Cuba (Pérez et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…A comparison between concentration-incineration of vinasse and anaerobic digestion alternatives, both capable to reduce residual, generate steam and electricity, shows that the generation of vapor and energy in the concentration-vinasse incineration is higher. In addition, anaerobic digestion causes problems such as: appearance of residual sludge, danger of gas leakage, among others; while the concentration-incineration alternative is a "zero residual" technology and does not present this problem (Fukushima et al, 2019). As reported in Table 1 (Ramaiah and Chikhalikar, 1986), the generation of steam and energy in the concentration-incineration of vinasse is greater.…”

Section: Introductionmentioning

confidence: 99%

Simulation of concentration and incineration as an alternative for vinasses treatment

Noa-Bolaño¹,

Pérez-Ones²,

Cárdenas³

et al. 2020

Rev.Mex.Ing.Quim.

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“…In this way, several treatments have been suggested for stillage disposal. Physicochemical, biological and membrane processes have been studied [21,[24][25][26]. In a review paper, Hoarau et al [22] found that membrane separation processes (MSP) are an optimal alternative despite some technical limitations.…”

Section: Introductionmentioning

confidence: 99%

“…The authors found that the combination of anaerobic digestion followed by reverse osmosis presents high exergy efficiency. Fukushima et al [25] performed an energy analysis of an ethanol industry considering the concentration and incineration of stillage. The authors found that, through heat integration with stillage incineration, it is possible to reduce from 7 to 2 effects the thermal stillage concentration using a multiple-effect evaporator.…”

Section: Introductionmentioning

confidence: 99%

Sugarcane Stillage Treatment Using Direct Contact Membrane Distillation

Ferreiro

Kronemberger

Borges

2020

Waste Biomass Valor

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Direct contact membrane distillation (DCMD) was evaluated as an alternative for the treatment of sugarcane stillage obtained in the bioethanol production process. First, a synthetic stillage solution was prepared in order to study the influence of the main operational parameters of DCMD in the permeate flux, as well as to analyze the separation of volatile components (such as ethanol and acetic acid) and the concentration of non-volatile components presented in the feed stream (sucrose and other salts). Secondly, an industrial sample of sugarcane stillage was treated using DCMD. The highest flux achieved was 13.4 kg/m 2 •h for a transmembrane temperature difference of 55 °C, reaching a recovery degree of 70% with a specific thermal energy consumption of 671 kWh/m 3 . Then, sugarcane stillage was concentrated until 60°Brix. A preliminary economic study was also presented, an estimated cost of 1.25 $ per m 3 of recovered permeate was obtained without any heat integration or DCMD operational optimization. DCMD showed to be suitable for stillage disposal allowing to recuperate the permeate stream as process water (containing mainly water and a low concentration of volatile components) and the concentrated stillage as biofuel to be used in the steam boiler (for producing more energy making the process thermally sustainable) or for ferti-irrigation (for reducing the transportation cost due to the volume reduction).

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Energy analysis of the ethanol industry considering vinasse concentration and incineration

Cited by 24 publications

References 8 publications

Techno-Economic Analysis of Vinasse Treatment Alternatives Through Process Simulation: A Case Study of Cuban Distillery

Techno-Economic Analysis of Vinasse Treatment Alternatives Through Process Simulation: A Case Study of Cuban Distillery

Simulation of concentration and incineration as an alternative for vinasses treatment

Sugarcane Stillage Treatment Using Direct Contact Membrane Distillation

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