Enhancement of batch butanol production from sugarcane molasses using nitrogen supplementation integrated with gas stripping for product recovery

Low-cost nitrogen sources, i.e., dried spent yeast (DSY), rice bran (RB), soybean meal (SM), urea and ammonium sulfate were used for batch butanol fermentation from sugarcane molasses by Clostridium beijerinckii TISTR 1461 under anaerobic conditions. Among these five low-cost nitrogen sources, DSY at 1.53 g/L (nitrogen content equal to that of 1 g/L of yeast extract) was found to be the most suitable. At an initial sugar level of 60 g/L, the maximum butanol concentration (PB), productivity (QB) and yield (YB/S) were 11.19 g/L, 0.23 g/L·h and 0.31 g/g, respectively. To improve the butanol production, the concentrations of initial sugar, DSY and calcium carbonate were varied using response surface methodology (RSM) based on Box–Behnken design. It was found that the optimal conditions for high butanol production were initial sugar, 50 g/L; DSY, 6 g/L and calcium carbonate, 6.6 g/L. Under these conditions, the highest experimental PB, QB and YB/S values were 11.38 g/L, 0.32 g/L·h and 0.40 g/g, respectively with 50% sugar consumption (SC). The PB with neither DSY nor CaCO3 was only 8.53 g/L. When an in situ gas stripping system was connected to the fermenter to remove butanol produced during the fermentation, the PB was increased to 15.33 g/L, whereas the YB/S (0.39 g/g) was not changed. However, the QB was decreased to 0.21 g/L·h with 75% SC.

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Two-stage in situ gas stripping for enhanced butanol fermentation and energy-saving product recovery

Bioresource Technology ◽

10.1016/j.biortech.2012.07.062 ◽

2013 ◽

Vol 135 ◽

pp. 396-402 ◽

Cited By ~ 119

Author(s):

Chuang Xue ◽

Jingbo Zhao ◽

Fangfang Liu ◽

Congcong Lu ◽

Shang-Tian Yang ◽

...

Keyword(s):

Energy Saving ◽

Product Recovery ◽

Gas Stripping ◽

Two Stage ◽

Butanol Fermentation

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Fed-batch fermentation for n-butanol production from cassava bagasse hydrolysate in a fibrous bed bioreactor with continuous gas stripping

Bioresource Technology ◽

10.1016/j.biortech.2011.10.089 ◽

2012 ◽

Vol 104 ◽

pp. 380-387 ◽

Cited By ~ 163

Author(s):

Congcong Lu ◽

Jingbo Zhao ◽

Shang-Tian Yang ◽

Dong Wei

Keyword(s):

Batch Fermentation ◽

Butanol Production ◽

Gas Stripping ◽

Fed Batch ◽

Fibrous Bed Bioreactor ◽

Cassava Bagasse ◽

Fed Batch Fermentation

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Sugarcane molasses fermentation with in situ gas stripping using low and moderate sugar concentrations for ethanol production: Experimental data and modeling

Biochemical Engineering Journal ◽

10.1016/j.bej.2016.02.007 ◽

2016 ◽

Vol 110 ◽

pp. 152-161 ◽

Cited By ~ 12

Author(s):

Gustavo Henrique Santos F. Ponce ◽

João Moreira Neto ◽

Sérgio Santos De Jesus ◽

Júlio César de Carvalho Miranda ◽

Rubens Maciel Filho ◽

...

Keyword(s):

Experimental Data ◽

Ethanol Production ◽

Sugarcane Molasses ◽

Gas Stripping

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Global View of Biofuel Butanol and Economics of Its Production by Fermentation from Sweet Sorghum Bagasse, Food Waste, and Yellow Top Presscake: Application of Novel Technologies

Fermentation ◽

10.3390/fermentation6020058 ◽

2020 ◽

Vol 6 (2) ◽

pp. 58

Author(s):

N. Qureshi ◽

X. Lin ◽

S. Liu ◽

B. C. Saha ◽

A. P. Mariano ◽

...

Keyword(s):

Food Waste ◽

Sweet Sorghum ◽

The United States ◽

Product Recovery ◽

Selling Price ◽

Sweet Sorghum Bagasse ◽

Capital Investments ◽

Butanol Production ◽

Total Capital ◽

Sorghum Bagasse

Worldwide, there are various feedstocks such as straws, corn stover, sugarcane bagasse, sweet sorghum bagasse (SSB), grasses, leaves, whey permeate, household organic waste, and food waste (FW) that can be converted to valuable biofuels such as butanol. For the present studies, an economic analysis was performed to compare butanol production from three feedstocks (SSB; FW; and yellow top presscake, YTP or YT) using a standard process and an advanced integrated process design. The total plant capacity was set at 170,000–171,000 metric tons of total acetone butanol ethanol (ABE) per year (99,300 tons of just butanol per year). Butanol production from SSB typically requires pretreatment, separate hydrolysis, fermentation, and product recovery (SHFR). An advanced process was developed in which the last three steps were combined into a single unit operation for simultaneous saccharification, fermentation, and recovery (SSFR). For the SHFR and SSFR plants, the total capital investments were estimated as $213.72 × 106 and $198.16 × 106, respectively. It was further estimated that the minimum butanol selling price (using SSB as a feedstock) for the two processes were $1.14/kg and $1.05/kg. Therefore, SSFR lowered the production cost markedly compared to that of the base case. Butanol made using FW had an estimated minimum selling price of only $0.42/kg. This low selling price is because the FW to butanol process does not require pretreatment, hydrolysis, and cellulolytic enzymes. For this plant, the total capital investment was projected to be $107.26 × 106. The butanol selling price using YTP as a feedstock was at $0.73/kg and $0.79/kg with total capital investments for SSFR and SHFR of $122.58 × 106 and $132.21 × 106, respectively. In the Results and Discussion section, the availability of different feedstocks in various countries such as Brazil, the European Union, New Zealand, Denmark, and the United States are discussed. Additionally, the use of various microbial strains and product recovery technologies are also discussed.

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