Process and economic analysis of pretreatment technologies

Eggeman, Tim; Elander, Richard T.

doi:10.1016/j.biortech.2005.01.017

Cited by 540 publications

(289 citation statements)

References 6 publications

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“…Several techno-economic studies have been carried out to analyze the technical and economic feasibility of different second-generation bioethanol production processes and to compare different pretreatment methods (Eggeman and Elander 2005;Kazi et al 2010;Humbird et al 2011;Tao et al 2011). These studies are typically based on simulation models, with their key parameters derived from laboratory or pilot scale experiments.…”

Section: Introductionmentioning

confidence: 99%

Economic Analysis of an Organosolv Process for Bioethanol Production

Kautto¹,

Park²,

Ragauskas³

et al. 2014

BioResources

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In a previous paper, conceptual process design, simulation, and mass and energy balances were presented for an organosolv process with a hardwood feed of 2350 metric tons (MT) per day and ethanol, lignin, furfural, and acetic acid production rates of 459, 310, 6.6, and 30.3 MT/day, respectively. In this paper, the investment and operating costs of the process and the minimum ethanol selling price (MESP) to make the process economically feasible were estimated. The total capital investment of the plant was approximately 720 million USD. Lignin price was found to affect the MESP considerably. With a base case lignin price of 450 USD/MT, the MESP was approximately 3.1 USD per gallon (gal). Higher lignin price of 1000 USD/MT was required to equal the MESP with the December 2013 ethanol market price (2.0 USD/gal). In addition to lignin price, the MESP was found to be strongly affected by feedstock, enzyme, and investment costs. Variations in feedstock and investment costs affected the MESP by approximately 0.2 and 0.5 USD/gal, respectively. Changing the enzyme dosage and price from base case estimate of 5270 USD/MT and 0.02 g/g cellulose to more conservative 3700 USD/MT and 0.06 g/g cellulose, respectively, increased the MESP by 0.59 USD/gal.

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Section: Introductionmentioning

confidence: 99%

Economic Analysis of an Organosolv Process for Bioethanol Production

Kautto¹,

Park²,

Ragauskas³

et al. 2014

BioResources

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“…Cellulase contributes to the major cost of the lignocellulosic ethanol technology [33]. Therefore, an efficient pretreatment is to be selected to decrease cellulose crystallinity and to remove lignin to the maximum extent, so that hydrolysis time as well as cellulase loading will be minimized [38]. Surfactants modify the cellulose surface by adsorbing lignin onto surfactant and thus the surfactant prevents the enzyme from unproductive binding with lignin and lowers enzyme loading [39].…”

Section: Biological Pretreatmentmentioning

confidence: 99%

Bioethanol Production from Lignocellulosic Waste-A Review

Mohanty¹,

Abdullahi²

2016

Biosci., Biotech. Res. Asia

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Petroleum and other fossil fuel has been the main energy source for a long period of time in human life. Through these energy sources, the world has been a developing and industrializing entity. However, it is agreed that these traditional sources of energy cannot remain forever as they are non-renewable. Many experts predicted that oil production will keep on decreasing, as the present oil wells keep on decreasing and fewer oil reserves are discovered. This led to increasing price of the minerals and eventually makes them economically unsustainable. As such, renewable source of energy has to be sourced. Bioethanol; a renewable energy source is being produced from food materials such as sugar cane, maize etc. However, if these are to be used for energy production, the world will be entering into another crisis as they will be competed for food and energy. Lignocellulosic wastes such as Rice straw, Wheat straw, Corn straw and Bagasse contain same sugar molecules for bioethanol production as such can be used to generate renewable energy using appropriate physical, chemical and biological techniques. This paper aims at exploring the process of bioethanol production from lignocellulosic wastes.

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“…Harvest/N/K feedstock production system [37][38][39][40][41][42][43][44]. This range in biorefinery willingness to pay for feedstock is much lower than what will be required by farmers to grow switchgrass as a dedicated feedstock crop on their farms.…”

Section: Pricesmentioning

confidence: 99%

Economic Evaluation of Switchgrass Feedstock Production Systems Tested in Potassium-Deficient Soils

et al. 2013

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Limited information is available about the economic benefits and costs associated with managing switchgrass (Panicum virgatum L.) produced for bioenergy feedstock in the K-deficient soils common in the southern Great Plains. The objectives of this study were to determine the most economical production system for harvesting and managing N and K fertilizations on switchgrass stands and to determine how sensitive the results are to various feedstock and fertilizer market price scenarios. A 4-year agronomic field experiment was conducted on a K-deficient site in South Central Oklahoma; the treatments included two harvest systems (summer and winter (SW) and winter only (W)), two N rates (0 and 135 kg ha −1 ), and two K rates (0 and 67 kg ha −1 ). Enterprise budgeting techniques and mixed ANOVA models were used to determine and compare the effects of eight harvest/N/K systems on yield, total cost, revenue, and net return. The harvest/N/K systems evaluated included SW/0/0, SW/0/67, SW/135/0, SW/135/67, W/0/0, W/0/67, W/135/0, and W/ 135/67. Results revealed the SW/135/67 system produced significantly (P >0.0001) greater average yield compared to the other systems; however, the SW/0/0 system was the most (P >0.0001) economical, realizing an average net return of $415 ha −1 . Compared to the base-case net return of the SW/0/ 0 system, the value of the additional yield generated with the SW/135/67 system was less than the costs associated with the extra nutrients and additional harvest activity. For feedstock prices greater than $110 Mg −1 , the most economical system shifted from the SW/0/0 to favor the SW/135/67 system.

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Process and economic analysis of pretreatment technologies

Cited by 540 publications

References 6 publications

Economic Analysis of an Organosolv Process for Bioethanol Production

Economic Analysis of an Organosolv Process for Bioethanol Production

Bioethanol Production from Lignocellulosic Waste-A Review

Economic Evaluation of Switchgrass Feedstock Production Systems Tested in Potassium-Deficient Soils

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