Biochemical Production and Separation of Carboxylic Acids for Biorefinery Applications

Murali, N.; Srinivas, Keerthi; Ahring, Birgitte K.

doi:10.3390/fermentation3020022

Cited by 100 publications

(76 citation statements)

References 156 publications

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“…In most studies the production of butyric acid is favored over acetic acid, possibly due to the different substrate composition (molasses, glycerol) and culturing conditions. Interestingly, in one study [12] when glucose was used at high concentrations (30 g L −1 ) the production of butyric acid reached 11.75 g L −1 compared to 4.0 g L −1 acetic acid.…”

Section: Initial Glucose Concentrationmentioning

confidence: 99%

Intensive Production of Carboxylic Acids Using C. butyricum in a Membrane Bioreactor (MBR)

et al. 2018

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This work reports on the use of a bench-scale chemostat (CSTR) in continuous mode and of a pilot-scale membrane bioreactor (MBR) in fed-batch mode to intensively produce acetic and butyric acids using C. butyricum grown on synthetic media. These studies were then used to perform a cost estimation study of the MBR system to assess the potential economic impact of this proposed methodology, regarding the production of carboxylic acids. The MBR system was found to be highly productive, reaching 37.88 g L−1 h−1 of acetic and 14.44 g L−1 h−1 of volumetric cell productivity, favoring acetic acid production over butyric acid at a ratio of 3 moles to 1. The cost of preparation and production of carboxylic acid using this system was found to be 0.0062 £PS/kg with up to 99% carbon recovery.

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Section: Initial Glucose Concentrationmentioning

confidence: 99%

Intensive Production of Carboxylic Acids Using C. butyricum in a Membrane Bioreactor (MBR)

et al. 2018

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“…In bioethanol production using lignocellulosic material derived from non-food biomass, delignification and saccharification are required [1,2]. These pretreatments of biomass are performed by physical methods such as steam explosion [3,4] or by chemical methods such as acid [5][6][7][8] or alkaline hydrolysis [9,10]. However, these methods also produce substances that inhibit ethanol fermentation by yeast [11,12].…”

Section: Introductionmentioning

confidence: 99%

Direct Ethanol Production from Lignocellulosic Materials by Mixed Culture of Wood Rot Fungi Schizophyllum commune, Bjerkandera adusta, and Fomitopsis palustris

2019

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The cost of bioethanol production from lignocellulosic materials is relatively high because the additional processes of delignification and saccharification are required. Consolidated bioprocessing (CBP) simultaneously uses the multiple processes of delignification, saccharification, and fermentation in a single reactor and has the potential to solve the problem of cost. Some wood-degrading basidiomycetes have lignin- and cellulose-degrading abilities as well as ethanol fermentation ability. The white rot fungus Schizophyllum commune NBRC 4928 was selected as a strong fermenter from a previous study. The lignin-degrading fungus Bjerkandera adusta and polysaccharide-degrading fungus Fomitopsis palustris were respectively added to S. commune ethanol fermentations to help degrade lignocellulosic materials. Bjerkandera adusta produced more ligninase under aerobic conditions, so a switching aeration condition was adopted. The mixed culture of S. commune and B. adusta promoted direct ethanol production from cedar wood. Fomitopsis palustris produced enzymes that released glucose from both carboxymethylcellulose and microcrystalline cellulose. The mixed culture of S. commune and F. palustris did not enhance ethanol production from cedar. The combination of S. commune and cellulase significantly increased the rate of ethanol production. The results suggest that CBP for ethanol production from cellulosic material can be achieved by using multiple fungi in one reactor.

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“…Figure 1 presents the market price range for the products yielded by anaerobic digestion, dark fermentation, and mixed culture lactic acid fermentation. Dark fermentation has been extensively reviewed for the production of value products [13][14][15][16][17][18][19][20][21][22][23][24][25]. Here it is presented the prices of hydrogen, acetic acid, ethanol, propionic acid, butyric acid, and caproic acid as dark fermentation products.…”

Section: Introductionmentioning

confidence: 99%

Increasing Profits in Food Waste Biorefinery—A Techno-Economic Analysis

Bastidas‐Oyanedel

Schmidt

2018

Energies

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The present manuscript highlights the economic profit increase when combining organic waste anaerobic digestion with other mixed culture anaerobic fermentation technologies, e.g., lactic acid fermentation and dark fermentation. Here we consider the conversion of 50 tonnes/day of food waste into methane, power generation (from CHP of biomethane), lactic acid, polylactic acid, hydrogen, acetic acid and butyric acid. The economic assessment shows that the basic alternative, i.e., anaerobic digestion with methane selling to the grid, generates 19 USD/t_VS (3 USD/t_foodwaste) of profit. The highest profit is obtained by dark fermentation with separation and purification of acetic and butyric acids, i.e., 296 USD/t_VS (47 USD/t_foodwaste). The only alternative that presented losses is the power generation alternative, needing tipping fees and/or subsidy of 176 USD/t_VS (29 USD/t_foodwaste). The rest of the alternatives generate profit. From the return on investment (ROI) and payback time, the best scenario is the production of polylactic acid, with 98% ROI, and 7.8 years payback time. Production of butyric acid ROI and payback time was 74% and 9.1 years.

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Biochemical Production and Separation of Carboxylic Acids for Biorefinery Applications

Cited by 100 publications

References 156 publications

Intensive Production of Carboxylic Acids Using C. butyricum in a Membrane Bioreactor (MBR)

Intensive Production of Carboxylic Acids Using C. butyricum in a Membrane Bioreactor (MBR)

Direct Ethanol Production from Lignocellulosic Materials by Mixed Culture of Wood Rot Fungi Schizophyllum commune, Bjerkandera adusta, and Fomitopsis palustris

Increasing Profits in Food Waste Biorefinery—A Techno-Economic Analysis

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