Assessment of <i>in situ</i> butanol recovery by vacuum during acetone butanol ethanol (ABE) fermentation

Mariano, Adriano Pinto; Qureshi, Nasib; Filho, Rubens Maciel; Ezeji, Thaddeus Chukwuemeka

doi:10.1002/jctb.2717

Cited by 75 publications

(65 citation statements)

References 25 publications

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“…The nutrient medium includes vitamin, minerals and buffer for the microbes. 2,23 While Clostridium beijerinckii P260 is reported as high butanol producing strain from corn stover 19 12 recently published literatures, which are summarized in Figure 3. The cellulose and hemicellulose conversion rate of 71 and 68 wt% for pretreated corn stover at severity factor of 3.07 were considered for base case analysis.…”

Section: Simultaneous Saccharification and Vacuum Fermentationmentioning

confidence: 95%

“…7 Mariano et al 23 concentration of acetone during vacuum fermentation may be due to loss of more acetone than butanol during the experiment. 2 For this analysis average conversion of glucose into ABE was estimated using the data reported by the previous studies, 2, 23 and the estimated average butanol to acetone ratio was 5.6.…”

Section: Simultaneous Saccharification and Vacuum Fermentationmentioning

confidence: 97%

“…In addition to the severity factor, heat recovery was assumed to be 90 %, which can be achieved with an efficient heat exchanger. While near term sustainable biorefineries are with capacity of 75-114 MLPY (20)(21)(22)(23)(24)(25)(26)(27)(28)(29)(30), 189 MLPY (50 MGPY) butanol production facility was assumed to determine an optimum butanol production cost. Feedstock supply to produce such amount of butanol might be challenging, although relatively centralized corn stover cultivation in the Midwestern United States encourages assuming this biorefinery capacity.…”

Section: Optimization Of Butanol Production Costmentioning

confidence: 99%

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Techno-Economic Analysis of Cellulosic Butanol Production from Corn Stover through Acetone–Butanol–Ethanol Fermentation

2016

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Biobutanol has comparable fuel properties to gasoline; however, its commercial production through acetone-butanol-ethanol (ABE) fermentation from lignocellulosic biomass is still encumbering due to low product yield, energy extensive recovery method and butanol toxicity to microbes. Recent development of simultaneous saccharification, vacuum fermentation and recovery technique has potentials to reduce these problems and improve butanol yield, which has gained significant attention as an emerging alternative way for ABE fermentation. Thus, the main objective of this study was to assess the techno-economic feasibility of commercial-scale ABE fermentation for a 113.4 million liter/year (30 million gallon/year) butanol production and identify operational targets for process improvement. Commercial dilute sulfuric acid pretreatment and corn stover feedstock were used in this study. Experimental data on the pretreatment of corn stover, and the ABE fermentation and recovery were gathered from recent publications. Process modeling and economic analyses were performed using a modeling software-SuperPro Designer. Estimated butanol production costs were $1.8 and 1.5 per liter without and with byproducts credits. Butanol recovery was identified to be the most sensitive parameter followed by sugar utilization in the fermentation reactor, feedstock cost, corn stover to sugars conversion rate and heat recovery. Furthermore, optimizing these sensitive operating parameters could reduce the butanol production cost to $0.6/liter, which is competitive with current gasoline price; however, achieving these targets will require further research and development efforts on the ABE fermentation.

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Section: Simultaneous Saccharification and Vacuum Fermentationmentioning

confidence: 95%

Section: Simultaneous Saccharification and Vacuum Fermentationmentioning

confidence: 97%

Section: Optimization Of Butanol Production Costmentioning

confidence: 99%

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Techno-Economic Analysis of Cellulosic Butanol Production from Corn Stover through Acetone–Butanol–Ethanol Fermentation

2016

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“…They found ABE concentration in the broth increased significantly 269.4 g/L in the continuous system with pervaporation when compare to feed batch gas stripping system. Integration of the vacuum with the bioreactor was shown to enhance ABE production productivity by times and resulted in complete utilization of glucose (Mariano et al 2012b). Additionally, Qureshi et al (2014) stated that about 50 % more ABE was obtained (20.79 vs 14.20 g/L) using the vacuum butanol recovery method.…”

Section: Recovery Of Butanolmentioning

confidence: 97%

Microbial inhibitors: formation and effects on acetone-butanol-ethanol fermentation of lignocellulosic biomass

Baral

Shah

2014

Appl Microbiol Biotechnol

131

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Biobutanol is a promising biofuel due to the close resemblance of its fuel properties to gasoline, and it is produced via acetone-butanol-ethanol (ABE) fermentation using Clostridium species. However, lignin in the crystalline structure of the lignin-cellulose-hemicellulose biomass complex is not readily consumed by the Clostridium; thus, pretreatment is required to degrade this complex. During pretreatment, some fractions of cellulose and hemicellulose are converted into fermentable sugars, which are further converted to ABE. However, a major setback resulting from common pretreatment processes is the formation of sugar and lignin degradation compounds, including weak acids, furan derivatives, and phenolic compounds, which have inhibitory effects on the Clostridium. In addition, butanol concentration above 13 g/L in the fermentation broth is itself toxic to most Clostridium strain(s). This review summarizes the current state-of-the-art knowledge on the formation of microbial inhibitors during the most common lignocellulosic biomass pretreatment processes. Metabolic effects of inhibitors and their impacts on ABE production, as well as potential solutions for reducing inhibitor formation, such as optimizing pretreatment process parameters, using inhibitor tolerant strain(s) with high butanol yield ability, continuously recovering butanol during ABE fermentation, and adopting consolidated bioprocessing, are also discussed.

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“…In order to overcome this barrier it is necessary to develop more resistant microorganisms, or techniques for the continuous removal of the butanol being generated in order to maintain its low levels in the fermentation broth. Due to the low yield of the process, a large amount of energy is necessary to remove the water and purify the butanol, ethanol and acetone generated (Mariano, 2012).…”

Section: Technology Roadmaps For Biofuels In Brazilmentioning

confidence: 99%

A Contribution to Guide the Use of Support Tools for Technology Roadmapping: a Case Study in the Clothing Industry

González¹,

Ogliari²,

Abreu³

2013

Journal of Technology Management & Innovation

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Technology roadmapping has been used to define long term strategies and research agenda for the development of biofuels. The present work proposes the use of technology roadmapping as a technique for long term strategic planning of the biobutanol development, aligning long term goals with the resources, funding, and priorities to fulfill the needs in the development process in Brazil. Interviews have been used in the roadmapping process as an alternative to the workshops on market, product and technology. It allows the participation of companies in a highly competitive environment. The use of interviews allows the information to be collected individually, contributing to the elaboration of a roadmap. The results show that sugar cane has the potential to be used as a feedstock in the biobutanol production process, enabling Brazil to become a key exporter to supply other countries. For the short future, biobutanol has the potential to be produced in Brazil to replace petro-butanol as a solvent in industrial applications and to build the export platform for the fuels market .

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Assessment of in situ butanol recovery by vacuum during acetone butanol ethanol (ABE) fermentation

Cited by 75 publications

References 25 publications

Techno-Economic Analysis of Cellulosic Butanol Production from Corn Stover through Acetone–Butanol–Ethanol Fermentation

Techno-Economic Analysis of Cellulosic Butanol Production from Corn Stover through Acetone–Butanol–Ethanol Fermentation

Microbial inhibitors: formation and effects on acetone-butanol-ethanol fermentation of lignocellulosic biomass

A Contribution to Guide the Use of Support Tools for Technology Roadmapping: a Case Study in the Clothing Industry

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