Integrated biorefinery wastewater design

Ryan, D. M.; Gadd, Andrew; Kavanagh, John M.; Barton, G.W.

doi:10.1016/j.cherd.2009.04.016

Cited by 35 publications

(21 citation statements)

References 30 publications

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“…In the case of sugarcane vinasse, business processes were developed in the late nineteenth century but found no interest from the sugarcane sector due to the low economic viability of electricity generation from biogas [58,60,85]. This technological possibility is now being reconsidered due to the need to reduce the organic load of the effluent to the soil while maintaining the nutrient and mineral content, as well as to the interest in optimizing the energy balance of sugarcane biorefineries [82][83][84].…”

Section: Integration Of Anaerobic Digestion In a Sugarcane Biorefinermentioning

confidence: 97%

“…The simple design and low capital/operational costs have made such technology a ubiquitous starting point for the treatment of wastewaters with a high organic load [84]. In the case of sugarcane vinasse, business processes were developed in the late nineteenth century but found no interest from the sugarcane sector due to the low economic viability of electricity generation from biogas [58,60,85].…”

Section: Integration Of Anaerobic Digestion In a Sugarcane Biorefinermentioning

confidence: 99%

See 1 more Smart Citation

Anaerobic digestion of vinasse from sugarcane ethanol production in Brazil: Challenges and perspectives

Moraes

Zaiat

Bonomi

2015

Renewable and Sustainable Energy Reviews

399

174

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Section: Integration Of Anaerobic Digestion In a Sugarcane Biorefinermentioning

confidence: 97%

Section: Integration Of Anaerobic Digestion In a Sugarcane Biorefinermentioning

confidence: 99%

Anaerobic digestion of vinasse from sugarcane ethanol production in Brazil: Challenges and perspectives

Moraes

Zaiat

Bonomi

2015

Renewable and Sustainable Energy Reviews

399

174

View full text Add to dashboard Cite

“…The process constitutes the direct land application of in natura vinasse into sugarcane fields to recycle nutrients and water to the crop (Dias et al, emission of greenhouse gases, such as nitrogen oxides and methane (Oliveira et al, 2013). Anaerobic digestion (AD), or biodigestion, is considered one of the most suitable technological approaches to the management of vinasse in biorefineries because both environmental adequacy and bioenergy recovery could be achieved through the controlled conversion of organic matter into biogas without significant losses in the fertilizing potential of vinasse (Fuess and Garcia, 2015;Moraes et al, 2015;Ryan et al, 2009). A large number of studies have investigated the application of AD to sugarcane vinasse (Bories et al, 1988;Costa et al, 1986;Craveiro et al, 1986;Ferraz et al, 2016;Fuess et al, 2017;Kumar et al, 2007;Siqueira et al, 2013;Souza et al, 1992) in an effort to optimize treatment performances by applying different reactor configurations and operating strategies.…”

Section: Introductionmentioning

confidence: 99%

Designing full-scale biodigestion plants for the treatment of vinasse in sugarcane biorefineries: How phase separation and alkalinization impact biogas and electricity production costs?

Fuess

Júnior²,

García

et al. 2017

Chemical Engineering Research and Design

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Anaerobic digestion (AD) is the most suitable approach for the management of vinasse in sugarcane distilleries because both environmental adequacy and bioenergy recovery could be achieved through biogas production. Because the literature lacks data on the implementation and operation of full-scale AD plants for enhanced energy recovery from vinasse, this study presents different designs for AD plants applied to vinasse in large-scale distilleries, considering both single-and two-phase schemes and different alkalizing strategies. Investment and operating costs and biogas and electricity production costs were obtained for each case. The results indicate that phase separation is economically feasible when scaling up AD plants in biorefineries. Despite the higher capital and operating costs in such schemes, the estimated biogas and electricity production costs reached equivalent or lower values compared with those of single-phase AD layouts, depending on the alkalizing strategy used. With respect to the alkalizing strategy, the best results were associated with sodium hydroxide dosing and/or effluent recirculation, with electricity costs reaching values 1.8-to 2.3-fold lower than grid electricity. In contrast, the competitive use of sodium bicarbonate in AD plants for treating vinasse requires further dosing optimization.

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“…: Water loss by evaporation and drift. Discharged treated water 649.14 Water with high COD levels could cause equipment corrosion, according to the Code for Design of Cooling for Industrial Recirculating Water and a high COD load associated with effluent causes the main difficulties in treating the latter [36]. Therefore, COD was selected as the pollutant index for the gray water footprint and key contaminant for water pinch analysis, combining the requirements of both [26].…”

Section: Case Studymentioning

confidence: 99%

Water Footprint and Water Pinch Analysis in Ethanol Industrial Production for Water Management

Liu

Ren

Zhuo

et al. 2019

Water

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Fuel ethanol is considered to be a clean alternative fuel to meet increasing energy demands and mitigate environmental pollution. Faced with challenges in terms of energy security and environmental pollution, China is vigorously developing fuel ethanol. However, ethanol-manufacturing is a water-intensive industry; it consumes large volumes of fresh water and generates a corresponding amount of waste water. Expansion of this industry can reduce water quality and cause water stress. This study aims to combine the water footprint (WF) with a water pinch analysis technique to manage water consumption and sewage discharge systematically in an ethanol plant. A well-operated cassava ethanol plant in China was chosen as a case study. The WF of industrial ethanol production was evaluated. The total WF was 17.08 L/L ethanol, comprised of a 7.69 L blue water footprint (BWF), and a 9.39 L gray water footprint (GWF). The direct WF was 16.38 L/L ethanol, and the indirect WF was 0.70 L/L ethanol. Thereafter, a water pinch analysis was conducted, and the optimal direct water reuse scheme was studied. After the water network was optimized, the BWF was reduced by 0.98 L/L ethanol, while the GWF was reduced by 1.47 L/L ethanol. These results indicate that the combined use of WF and pinch analysis can provide the starch-based ethanol industry with an effective tool to improve its water management.

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Integrated biorefinery wastewater design

Cited by 35 publications

References 30 publications

Anaerobic digestion of vinasse from sugarcane ethanol production in Brazil: Challenges and perspectives

Anaerobic digestion of vinasse from sugarcane ethanol production in Brazil: Challenges and perspectives

Designing full-scale biodigestion plants for the treatment of vinasse in sugarcane biorefineries: How phase separation and alkalinization impact biogas and electricity production costs?

Water Footprint and Water Pinch Analysis in Ethanol Industrial Production for Water Management

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