Economic feasibility of producing sweet sorghum as an ethanol feedstock in the southeastern United States

Linton, J.A. Voelker; Miller, James C.; Little, R. Daniel; Petrolia, Daniel R.; Coble, Keith H.

doi:10.1016/j.biombioe.2011.04.007

Cited by 50 publications

(26 citation statements)

References 12 publications

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“…Ethanol produced from sweet sorghum has superior burning quality, with high octane rating and less sulphur emission (Ture et al, 1997). Significant research has been carried out during the past two decades on sweet sorghum for ethanol production (Linton et al, 2011;Massoud and Abd El-Razek, 2011) to improve crop yield and resources utilization efficiency (Zegada-Lizarazu and Monti, 2012). Sweet sorghum provides an option as a potential cash crop that can be cultivated under moderate inputs.…”

Section: Introductionmentioning

confidence: 99%

Nitrogen response and water use efficiency of sweet sorghum cultivars

Sawargaonkar

Patil

Wani

et al. 2013

Field Crops Research

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ABSTRACTwas also significantly higher than that from NTJ 2 (US$ 415 ha -1 ) and ICSV 93046 (US$ 539 ha -1 ). All cultivars responded to applied N up to 150 kg ha -1 ; however beyond 90 kg ha -1 N rate, the increase in yield was insignificant. Estimated N use efficiency (NUE) values indicated that 90 kg N ha -1 was an optimum N level for sweet sorghum crop. Simulated soil water balance components revealed that reduction in total transpiration due to water stress was 20 to 45% compared to the no-stress. In case of water use efficiency, CSH 22 SS showed the highest economic returns per unit volume of water input. Based on these results, it is concluded that sweet sorghum hybrid CSH 22 SS at 90 kg N ha -1 is the best remunerative combination for maximizing yield, economic returns and resource use efficiency.

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Section: Introductionmentioning

confidence: 99%

Nitrogen response and water use efficiency of sweet sorghum cultivars

Sawargaonkar

Patil

Wani

et al. 2013

Field Crops Research

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“…aAverage price of sweet sorghum was around US $ 30/t as reported [52].bBiomass loaded fee is US $ 1.10/t and then US $ 0.103/t/km transported [51], therefore, the transport cost of our plant is around US $ 2.13/t (the maximum feedstock collection radius is 10 km).cUsing SO 2 for storage, the cost is around US $ 5/t.dThe capital cost and other fees were the same as reported [52].…”

Section: Resultsmentioning

confidence: 99%

A Novel Wild-Type Saccharomyces cerevisiae Strain TSH1 in Scaling-Up of Solid-State Fermentation of Ethanol from Sweet Sorghum Stalks

Yan

Feng

et al. 2014

PLoS ONE

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The rising demand for bioethanol, the most common alternative to petroleum-derived fuel used worldwide, has encouraged a feedstock shift to non-food crops to reduce the competition for resources between food and energy production. Sweet sorghum has become one of the most promising non-food energy crops because of its high output and strong adaptive ability. However, the means by which sweet sorghum stalks can be cost-effectively utilized for ethanol fermentation in large-scale industrial production and commercialization remains unclear. In this study, we identified a novel Saccharomyces cerevisiae strain, TSH1, from the soil in which sweet sorghum stalks were stored. This strain exhibited excellent ethanol fermentative capacity and ability to withstand stressful solid-state fermentation conditions. Furthermore, we gradually scaled up from a 500-mL flask to a 127-m3 rotary-drum fermenter and eventually constructed a 550-m3 rotary-drum fermentation system to establish an efficient industrial fermentation platform based on TSH1. The batch fermentations were completed in less than 20 hours, with up to 96 tons of crushed sweet sorghum stalks in the 550-m3 fermenter reaching 88% of relative theoretical ethanol yield (RTEY). These results collectively demonstrate that ethanol solid-state fermentation technology can be a highly efficient and low-cost solution for utilizing sweet sorghum, providing a feasible and economical means of developing non-food bioethanol.

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“…[3][4][5][6] Highsugar feedstocks, such as sugarbeets, sugarcane, and sweet sorghum, are potential advanced biofuel feedstock candidates. [7][8][9][10][11] Th e energy beet, a member of the beet family (Beta vulgaris), is a hybrid sugarbeet that has been genetically engineered in various parts of USA to yield higher amounts of raw sugar, or industrial-grade sugar, without concern for impurities that would tarnish the quality of food-grade sugar. [12][13][14][15][16] Although energy beets are specifi c to the USA, sugarbeets are used in Europe for ethanol and sugar production.…”

Section: Introductionmentioning

confidence: 99%

Costs of joint production of ethanol and industrial sugar juice using energy beets in the Northern Plains of the United States

Wamisho

Ripplinger

Laporte

2015

Biofuels Bioprod Bioref

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This study evaluates the economic feasibility and profi tability of producing industrial sugar juice and ethanol using energy beets in the Northern Plains of the United States. An enterprise budget is constructed to estimate the breakeven price of energy beets that triggers farmers to produce the crop. This breakeven price is used to estimate the long-run breakeven prices for industrial sugar juice and ethanol. Stochastic models are developed to account for price and parameter variability in the estimation of enterprise budgets and breakeven prices. Results show that the simulated breakeven price of producing ethanol is 518 $m -3 and that of industrial sugar juice is 351 $t -1 , using a 36 $t -1 breakeven delivered cost of energy beets. Energy beet ethanol investment could be profi table at the breakeven prices of energy beets and ethanol computed, and could attract new capital investment into the ethanol industry.

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Economic feasibility of producing sweet sorghum as an ethanol feedstock in the southeastern United States

Cited by 50 publications

References 12 publications

Nitrogen response and water use efficiency of sweet sorghum cultivars

Nitrogen response and water use efficiency of sweet sorghum cultivars

A Novel Wild-Type Saccharomyces cerevisiae Strain TSH1 in Scaling-Up of Solid-State Fermentation of Ethanol from Sweet Sorghum Stalks

Costs of joint production of ethanol and industrial sugar juice using energy beets in the Northern Plains of the United States

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