Economic Assessment of Bioethanol Recovery Using Membrane Distillation for Food Waste Fermentation

Muhammad, Noor; Rosentrater, Kurt A.

doi:10.3390/bioengineering7010015

Cited by 9 publications

(4 citation statements)

References 15 publications

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“…The ethanol yield of 0.32 g/g biomass resulted in a MESP of approximately 0.14 USD/L, which is very low compared to the market price of 0.59 USD/L for ethanol. This is significantly different than the estimate of 0.64 USD/L of ethanol by Intan Shafinas Muhammad and Rosentrater (2020) [57]. Additionally, while FW is classified as a zero-cost raw material for energy production, there are hidden costs associated with management, collection, and sorting, which are major impediments to industrial waste utilization.…”

Section: Gross Energy Outputmentioning

confidence: 66%

Enhanced Energy Recovery from Food Waste by Co-Production of Bioethanol and Biomethane Process

et al. 2021

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The primary objective of this research is to study ways to increase the potential of energy production from food waste by co-production of bioethanol and biomethane. In the first step, the food waste was hydrolysed with an enzyme at different concentrations. By increasing the concentration of enzyme, the amount of reducing sugar produced increased, reaching a maximum amount of 0.49 g/g food waste. After 120 h of fermentation with Saccharomyces cerevisiae, nearly all reducing sugars in the hydrolysate were converted to ethanol, yielding 0.43–0.50 g ethanol/g reducing sugar, or 84.3–99.6% of theoretical yield. The solid residue from fermentation was subsequently subjected to anaerobic digestion, allowing the production of biomethane, which reached a maximum yield of 264.53 ± 2.3 mL/g VS. This results in a gross energy output of 9.57 GJ, which is considered a nearly 58% increase in total energy obtained, compared to ethanol production alone. This study shows that food waste is a raw material with high energy production potential that could be further developed into a promising energy source. Not only does this benefit energy production, but it also lowers the cost of food waste disposal, reduces greenhouse gas emissions, and is a sustainable energy production approach.

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Section: Gross Energy Outputmentioning

confidence: 66%

Enhanced Energy Recovery from Food Waste by Co-Production of Bioethanol and Biomethane Process

et al. 2021

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“…Previous study found that by selling these co-products to other industries it could maximize the profit. (Muhammad and Rosentrater 2020a). However, in this study, bio compost was being utilized to generate heat and power by using the CHP system.…”

Section: Methodology Process Modelingmentioning

confidence: 99%

“…Even though the distillation column was identified as an energy-intensive process, the minimum selling price (MSP) value was the lowest compared to the membrane separation process. From the economic analysis, the MSE for FW fermentation without enzymes and 2-step distillation system was found to be $2.41/gal (Muhammad and Rosentrater 2020a). This value is in between corn ethanol price and cellulosic ethanol.…”

Section: Introductionmentioning

confidence: 95%

Economic Evaluation of Combined Heat and Power Integrated With Food Waste-Based Ethanol Production

Muhammad

Rosentrater

2021

Front. Energy Res.

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The concern of food waste (FW) impact on the environment, societies, and economies, has triggered many researchers to find alternative ways to utilize these materials. FW can be high in glucose and other sugars (depending upon the food used) and has the potential to be converted into value-added products such as ethanol. Ethanol is an organic material that has a high demand from different industries for products such as fuel, beverages, pharmaceuticals, and other industrial applications. FW fermentation to produce ethanol may be a promising method, and might results in positive impacts on economies. However, it is a challenge for the product price to compete with that of corn ethanol due to low yield and the inconsistency of FW composition. Thus, to increase the profitability, a conventional fermentation plant integrated with a combined heat and power (CHP) system might be a great combination, and was analyzed in this study. Solid waste stream from the process can be converted into energy and could reduce the utility cost. Therefore, the main focus of this study is to evaluate the economic impact of this integrated system by estimating the minimum selling price (MSP) using techno-economic analysis (TEA) and compare to conventional plants without CHP. Results from this analysis showed that the MSE value for this integrated system was $1.88 per gallon ($0.50 per liter). This study suggests that an integrated system with CHP was found to be more economical and attractive to be implemented on a commercial scale.

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“…Downstream processing of ethanol requires solid separation and purification which can be analysed in distillation and dehydration. Distillation is considered as an energy-intensive process and accounts for approximately 40% of the energy demand of the process [40,41]. Normally, two different columns are used in the distillation process: a stripper column, in which the ethanol is separated from solids and non-volatile compounds and a rectification column, where ethanol is concentrated near to the azeotropic point.…”

Section: System Boundaries Analysismentioning

confidence: 99%

Life Cycle Analysis of the Bioethanol Production from Food Waste—A Review

2020

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Food Waste (FW) because of its composition is considered as an ideal feedstock for the production of biofuels and in particular bioethanol. The production of bioethanol from lignocellulosic materials has been studied over a long time. The process consists of the stages of pretreatment, enzymatic hydrolysis, fermentation and product recovery. However, the legal framework regarding biofuels has established specific environmental criteria for their production which are regularly updated. The most common tool for the assessment of the environmental performance of a process or product is the Life Cycle Analysis (LCA). In the present review, the results of LCA studies on the production of bioethanol from food waste are presented. Significant differences are observed among the studies in terms of the methodological choices made. Despite the high heterogeneity observed which does not allow a direct comparison among them, there is strong evidence that the production of bioethanol from food waste is an eco-friendly process which can substantially contribute to Green House Gas (GHG) emissions savings.

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Economic Assessment of Bioethanol Recovery Using Membrane Distillation for Food Waste Fermentation

Cited by 9 publications

References 15 publications

Enhanced Energy Recovery from Food Waste by Co-Production of Bioethanol and Biomethane Process

Enhanced Energy Recovery from Food Waste by Co-Production of Bioethanol and Biomethane Process

Economic Evaluation of Combined Heat and Power Integrated With Food Waste-Based Ethanol Production

Life Cycle Analysis of the Bioethanol Production from Food Waste—A Review

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