Net Energy Analysis and Techno-Economic Assessment of Co-Production of Bioethanol and Biogas from Cellulosic Biomass

Jarunglumlert, Teeraya; Prommuak, Chattip

doi:10.3390/fermentation7040229

Cited by 15 publications

(16 citation statements)

References 106 publications

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“…8, schemes 1 and 2, which allow the production of bioethanol prior to biogas, generated an average total bioenergy output of 9.8 and 7.8 MJ/t biomass, respectively. In contrast, scheme 3, where AD comes before fermentation, generated a relatively lower energy output of 6.4 MJ/T 111 . The observed variation can be tied to the differences in process configuration, including feedstock types, pre‐treatment techniques, and process conditions.…”

Section: Techno‐economic Analysismentioning

confidence: 98%

“…The overall gross bioenergy output from the co‐production process can be higher. For example, in the review of Jarunglumlert et al ., the average biofuel output from the co‐production process was estimated at 8 MJ/T dry biomass, which is equivalent to 250 L gasoline, indicating a 142% increase than producing bioethanol alone and 70% increase than producing biogas alone 111 . From Fig.…”

Section: Techno‐economic Analysismentioning

confidence: 98%

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Techno‐economic analysis of biochemical conversion of biomass to biofuels and platform chemicals

Hakeem

Sharma²,

Sharma

et al. 2023

Biofuels Bioprod Bioref

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Biomass is the most versatile feedstock for renewable energy and chemical production. Biochemical techniques such as fermentation and biomethanation have been developed extensively for converting biomass into bioethanol, biogas, and high‐value platform chemicals. However, the techno‐economic feasibility of the various biochemical techniques for the production of a range of biofuels and chemicals has not been fully consolidated in a review. This paper reviews the techno‐economic studies of biochemical conversion of biomass in a comparative fashion between feedstocks, treatment methods, and product types. The review starts with an overview of various biomass treatment approaches and the need for pre‐treatment for processing second‐generation feedstocks. This is followed by a review of the main biochemical conversion processes, offering insights into process stages, product yields and quality, as well as commercialization prospects and challenges. The various techno‐economic aspects of biomass conversion via biochemical techniques, such as conversion efficiency, production capacity, minimum selling price, capital cost, unit production cost, and profitability metrics, are critically reviewed. It was found that bioethanol and biogas are the most commercially viable products from the biochemical processing of biomass. The production of other biofuels and chemicals such as biobutanol, biohydrogen, furfural, volatile fatty acids, succinate, levulinic acid, and sugar alcohols via biochemical techniques is still largely limited by low conversion, frail microbial strains, cost of enzymes, and separation, and refining challenges. Overcoming these technical bottlenecks, and addressing the issues of feedstock price and supply security, are crucial for enhancing the overall techno‐economic attractiveness of biochemical processes for fuels and chemical production from biomass resources. © 2023 Society of Industrial Chemistry and John Wiley & Sons Ltd.

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Section: Techno‐economic Analysismentioning

confidence: 98%

Section: Techno‐economic Analysismentioning

confidence: 98%

Techno‐economic analysis of biochemical conversion of biomass to biofuels and platform chemicals

Hakeem

Sharma²,

Sharma

et al. 2023

Biofuels Bioprod Bioref

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“…The former system uses cellulolytic enzyme cocktails for breaking down the biomass into sugars, which can then be further processed into fuels (e.g., ethanol) by microorganisms such as brewer's yeast ( Saccharomyces cerevisiae ) (Chundawat et al, 2011). In contrast, AD systems employ undefined mixed microbial cultures that are responsible for both disintegrating and converting the biomass, often into methane‐rich biogas (Jarunglumlert & Prommuak, 2021; Monlau et al, 2013). A major impediment to biological conversion of lignocellulose biomass is its inherent resistance to deconstruction, a property commonly referred as biomass recalcitrance (see Section 2).…”

Section: Conversion Of Salix Biomass Into Liquid and Gaseous Transpor...mentioning

confidence: 99%

“…Since the late 1980s and until today, willow biomass has been used almost exclusively commercially as biofuel in the form of wood chips for direct combustion in heat and power plants (Kuzovkina et al, 2008). However, there is also a growing interest of using this biomass as raw material for conversion into other biofuels such as biogas and bioethanol (Jarunglumlert & Prommuak, 2021; Phitsuwan et al, 2013), a development that likely requires genetic improvements of additional breeding targets compared to using willow biomass solely for direct combustion. To date, Salix breeding programs have produced varieties for the European as well as the international market (Karp et al, 2011; Smart & Cameron, 2008) and varieties with increased yield and resistance toward different pests, especially rust fungi ( Melampsora epitea ) are now available (Åhman et al, 1994; Karp et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Optimized utilization of Salix—Perspectives for the genetic improvement toward sustainable biofuel value chains

et al. 2022

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Bioenergy will be one of the most important renewable energy sources in the conversion from fossil fuels to bio-based products. Short rotation coppice Salix could be a key player in this conversion since Salix has rapid growth, positive energy balance, easy to manage cultivation system with vegetative propagation of plant material and multiple harvests from the same plantation. The aim of the present paper is to provide an overview of the main challenges and key issues in willow genetic improvement toward sustainable biofuel value chains. Primarily based on results from the research project "Optimized Utilization of Salix" (OPTUS), the influence of Salix wood quality on the potential for biofuel use is discussed, followed by issues related to the conversion of Salix biomass into liquid and gaseous transportation fuels. Thereafter, the studies address genotypic influence on soil carbon sequestration in Salix plantations, as well as on soil carbon dynamics and climate change impacts. Finally, the opportunities for plant breeding are discussed using willow as a resource for sustainable biofuel production. Substantial phenotypic and genotypic variation was reported for different wood quality traits important in biological (i.e., enzymatic and anaerobic) and thermochemical conversion processes, which is a prerequisite for plant breeding. Furthermore, different Salix genotypes can affect soil carbon sequestration variably, and life cycle assessment illustrates that these differences can result in different climate mitigation potential depending on genotype. Thus, the potential of Salix plantations for sustainable biomass production and its conversion into biofuels is shown. Large genetic variation in various wood and biomass traits, important for different conversion processes and carbon sequestration, provides opportunities to enhance the sustainability of the production system via plant breeding. This includes new breeding targets in addition to traditional targets for high yield to improve biomass quality and carbon sequestration potential.

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“…In particular, the co-production process in this context refers to the production of other fuels or valuable substances as a by-product of ethanol production, which can be sold to increase revenue or used as fuel to reduce energy costs in ethanol production. As a result, the economic competitiveness of second-generation bioethanol production is enhanced [21]. In this regard, previous research has demonstrated the production of bioethanol coupled with biogas from red oak [22], sugarcane bagasse [23], wheat straw [24], corn stover [25], spruce wood [26], and switchgrass [27].…”

Section: Introductionmentioning

confidence: 99%

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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Net Energy Analysis and Techno-Economic Assessment of Co-Production of Bioethanol and Biogas from Cellulosic Biomass

Cited by 15 publications

References 106 publications

Techno‐economic analysis of biochemical conversion of biomass to biofuels and platform chemicals

Techno‐economic analysis of biochemical conversion of biomass to biofuels and platform chemicals

Optimized utilization of Salix—Perspectives for the genetic improvement toward sustainable biofuel value chains

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

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