Acetic Anhydride

Wagner, Frank S.

doi:10.1002/0471238961.0103052023010714.a03.pub2

Cited by 2 publications

(2 citation statements)

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“…X i and X f (g/L) denoted the biomass concentration at the initial exponential phase (t i ) and the end of the exponential phase (t f ) in h, respectively, and V i and V f (L) represented the initial and the final working volume at the exponential phase, respectively. The acetate volumetric productivity (Q P ) in g/(L.h) and acetate yield (Y P/X ) in g/g were counted following the Equations ( 5) and (6).…”

Section: Calculation and Statistical Analysismentioning

confidence: 99%

“…Apart from bioethanol, acetate is a potential chemical that can be produced through the syngas route. Acetate is the ester form of acetic acid and has enormous worldwide market demand [4] with a broad spectrum of applications such as building block for syntheses to vinyl acetate monomer (VAM) [5], acetate anhydrate [6], acetate esters [7], monochloroacetic acid [8], and also as a solvent to produce dimethyl terephthalate and terephthalic acid [9]. Syngas is a gaseous mixture of CO, CO 2 , and H 2 thermochemically generated from lignocellulose gasification [10].…”

Section: Introductionmentioning

confidence: 99%

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Acetate Production by Moorella thermoacetica via Syngas Fermentation: Effect of Yeast Extract and Syngas Composition

Harahap,

Ahring

2023

Fermentation

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Gasifiers produce a gaseous mixture of CO/CO2/H2, also known as synthesis gas (syngas), containing varying compositions and ratios depending on the lignocellulose material types, gasifier design, and gasification conditions. Different physicochemical and thermodynamic properties of each gas type in the various syngas blends can influence syngas fermentation performance for the production of chemicals such as acetate. This study examined the effect of syngas composition (CO, CO/H2, CO/CO2/H2, and CO/H2) and its corresponding ratio on acetate production using Moorella thermoacetica, a thermophilic homoacetogen as the biocatalyst. We also investigated the effect of yeast extract addition for enhancing acetate production. A syngas fermentation study performed at a total pressure of 19 psig (2.29 atm) demonstrated that syngas fermentation in the absence of CO (30%CO2/70%H2) or at low CO proportions (21%CO/24%CO2/55%H2) resulted in the highest volumetric productivity of acetate (0.046 ± 0.001 and 0.037 ± 0.001 g/L/h, respectively). Interestingly, syngas fermentation without CO reached the highest YP/X of 22.461 ± 0.574 g-acetate/g-biomass, indicating that more acetate was produced compared to cell biomass. Higher biomass production was obtained when the CO proportion was increased up to 75% in CO/H2 fermentation. However, the cell growth and acetate production dramatically decreased with increasing CO proportion up to 99.5% CO as the sole constituent of the syngas. Even so, acetate production using 99.5% CO could be improved by adding 2 g/L yeast extract.

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Section: Calculation and Statistical Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Acetate Production by Moorella thermoacetica via Syngas Fermentation: Effect of Yeast Extract and Syngas Composition

Harahap,

Ahring

2023

Fermentation

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Acetic Anhydride and Mixed Fatty Acid Anhydrides

Held¹,

Rengstl²,

Mayer

2000

Ullmann's Encyclopedia of Industrial Chemistry

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The article contains sections titled: 1. Acetic Anhydride 1.1. Physical Properties 1.2. Chemical Properties 1.2.1. Acetylation 1.2.2. Dehydration 1.2.3. Reactions of the α ‐Protons 1.2.4. Reactions of a Single Carbonyl Group 1.2.5. Production of Silver Ketenide 1.3. Production 1.3.1. Ketene Process 1.3.1.1. Production of Ketene 1.3.1.2. Reaction of Ketene with Acetic Acid 1.3.1.3. Pure Anhydride Distillation 1.3.1.4. Environmental Problems 1.3.2. Oxidation of Acetaldehyde 1.3.3. Carbonylation of Methyl Acetate 1.4. Analysis 1.5. Quality Specifications 1.6. Storage and Transportation 1.7. Uses 2. Mixed Fatty Acid Anhydrides 2.1. Physical Properties 2.2. Chemical Properties 2.3. Production 2.4. Uses 3. Economic Aspects 4. Toxicology and Occupational Health

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Acetic Anhydride

Cited by 2 publications

References 33 publications

Acetate Production by Moorella thermoacetica via Syngas Fermentation: Effect of Yeast Extract and Syngas Composition

Acetate Production by Moorella thermoacetica via Syngas Fermentation: Effect of Yeast Extract and Syngas Composition

Acetic Anhydride and Mixed Fatty Acid Anhydrides

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