Technical and Financial Feasibility Analysis of Distributed Bioprocessing Using Regional Biomass Pre-Processing Centers

Carolan, Joseph E.; Joshi, Satish; Dale, Bruce E.

doi:10.2202/1542-0485.1203

Cited by 79 publications

(93 citation statements)

References 23 publications

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“…The MW-assisted process takes 27 % less time than the steam-assisted process to achieve the similar fractionation results for the SSB. The selection of the process for the on-farm processing can only be made after considering the technical, economic and environmental aspects of the two processes especially the capital investment required for each of the processes [52].…”

Section: Comparison Of Steam-assisted Versus Microwave-assisted Treatmentioning

confidence: 99%

Comparison of steam-assisted versus microwave-assisted treatments for the fractionation of sweet sorghum bagasse

Kurian

Gariépy

Orsat

et al. 2015

Bioresour. Bioprocess.

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Background: The fractionation of lignocellulosic materials can be applied to get each of the components (cellulose, hemicellulose and lignin) of biomass in its maximum purity and yield. The individual component can be further processed to high-value products such as fuels and biomaterials at existing or newly developing biorefineries. The steam-assisted and microwave (MW)-assisted processes were used to fractionate sweet sorghum bagasse into hemicellulosic sugars, cellulose-rich and high-density residue and solid lignin. The treatment temperature evaluated for the fractionation process was 121°C for 30 to 120 min. The substrate was autohydrolysed to extract the hemicellulose, and the residue was delignified using lime solution to obtain cellulose-rich residue. The lignin and lime from the liquor obtained after the lime treatment of the autohydrolysed sweet sorghum bagasse (SSB) was precipitated using carbon dioxide gas. Results: Under optimum conditions, the steam-assisted autohydrolysis extracted 72.69 (±0.08) % by weight of the hemicelluloses while the MW-assisted autohydrolysis extracted 70.83 (±0.49) % of the hemicelluloses from the sweet sorghum bagasse. The steam-assisted lime treatment resulted in 69.67 (±1.26) % of the lignin extraction the MW-assisted lime treatment resulted in 68.27 (±1.19) % of the lignin extraction from the corresponding autohydrolysed sweet sorghum bagasse samples. The CO 2 treatment precipitated 58.85 (±3.2) % of the lignin dissolved in the yellow liquor of the steam-assisted process while 60.26 (±2.11) % of the dissolved lignin was recovered from the yellow liquor of the MW-assisted process.

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Section: Comparison Of Steam-assisted Versus Microwave-assisted Treatmentioning

confidence: 99%

Comparison of steam-assisted versus microwave-assisted treatments for the fractionation of sweet sorghum bagasse

Kurian

Gariépy

Orsat

et al. 2015

Bioresour. Bioprocess.

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“…Thus feedstock logistics is the main driver for smaller processing plants or a distributed network of preprocessing-densification plants to support a large centralized processing operation. This latter approach has been promoted by Carolan et al, (2007) in their regional biomass processing center (RBPC) model. Such smaller preprocessing facilities would have a 20-25 mile collection radius, instead of the 75-100+ mile radius common to large corn ethanol plants.…”

Section: Logisticsmentioning

confidence: 99%

“…These RBPC facilities would collect biomass directly from the farm, pretreat and densify the biomass into more storable and flowable billets, and then provide these to a centralized biofuel production facility. The ammonia fiber expansion (AFEX) treated biomass is also more digestible in livestock feeds, so the RBPC network could support cattle feeding operations and/or biorefineries (Carolan et al, 2007). Harvest timing and storage are additional concerns for perennial grasses (Marten & Hovin, 1980).…”

Section: Logisticsmentioning

confidence: 99%

“…Instead of the 100-120 million gallon/yr (MMGY) corn ethanol plants, 2 nd -4 th generation biofuel facilities will be in the 10-40 MMGY range. The upper size limit will likely be determined by the amount of biomass that can be economically delivered to the plant gate (Carolan, et al, 2007;Eksioglu, et al, 2009). This will be affected by biomass yields per acre, competing uses/markets, price, and feedstock logistic issues.…”

Section: Conversion and Recoverymentioning

confidence: 99%

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Distributed, Integrated Production of Second and Third Generation Biofuels

Gibbons¹,

Hughes²

2011

Economic Effects of Biofuel Production

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“…Risk for both farmer and biorefinery investor creates a 'chicken and egg' situation for real-world development of cellulosic biorefining systems (Carolan et al, 2007). Simply put, the situation is as follows: farmers will not grow the huge amounts of biomass required for these cellulosic biofuel systems unless they can see a way to profit from these materials, and investors will not invest the billions of dollars required to roll out the industry unless they can be assured of long-term feedstock supplies at attractive prices.…”

Section: Introductionmentioning

confidence: 99%

Environmental and economic analysis of the fully integrated biorefinery

Sendich¹,

Dale²

2009

GCB Bioenergy

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Cellulosic biofuel systems have the potential to significantly reduce the environmental impact of the world's transportation energy requirements. However, realizing this potential will require systems level thinking and scale integration. Until now, we have lacked modeling tools for studying the behavior of integrated cellulosic biofuel systems. In this paper, we describe a new research tool, the Biorefinery and Farm Integration Tool (BFIT) in which the production of fuel ethanol from cellulosic biomass is integrated with crop and animal (agricultural) production models. Uniting these three subsystems in a single combined model has allowed, for the first time, basic environmental and economic analysis of biomass production, possible secondary products, fertilizer production, and bioenergy production across various regions of the United States. Using BFIT, we simulate cellulosic ethanol production embedded in realistic agricultural landscapes in nine locations under a collection of farm management scenarios. This combined modeling approach permits analysis of economic profitability and highlights key areas for environmental improvement. These results show the advantages of introducing integrated biorefinery systems within agricultural landscapes. This is particularly true in the Midwest, which our results suggest is a good setting for the cellulosic ethanol industry. Specifically, results show that inclusion of cellulosic biofuel systems into existing agriculture enhances farm economics and reduces total landscape emissions. Model results also indicate a limited ethanol price effect from increased biomass transportation distance. Sensitivity analysis using BFIT revealed those variables having the strongest effects on the overall system performance, namely: biorefinery size, switchgrass yield, and biomass farm gate price.

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Technical and Financial Feasibility Analysis of Distributed Bioprocessing Using Regional Biomass Pre-Processing Centers

Cited by 79 publications

References 23 publications

Comparison of steam-assisted versus microwave-assisted treatments for the fractionation of sweet sorghum bagasse

Comparison of steam-assisted versus microwave-assisted treatments for the fractionation of sweet sorghum bagasse

Distributed, Integrated Production of Second and Third Generation Biofuels

Environmental and economic analysis of the fully integrated biorefinery

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