Sustainable routes for acetic acid production: Traditional processes vs a low-carbon, biogas-based strategy

Martín-Espejo, Juan Luis; Gándara-Loe, Jesús; Odriozola, José Antonio; Reina, T.R.; Pastor‐Pérez, Laura

doi:10.1016/j.scitotenv.2022.156663

Cited by 28 publications

(13 citation statements)

References 82 publications

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“…Two and four compounds from sapwood and heartwood, respectively, were not identified. Acetic acid, the main component of sapwood, can be used in the manufacture of inks, dyes, synthetic silks, cellulose acetate and medicines 13 , while levoglucosan, the main component with heartwood, can be used in the manufacture of epoxy resins, antiparasitic and insecticides 14 . Many compounds found are phenolic, these components are fundamental in the resistance against attack by xylophagous agents and can be used in the chemical and food industry 3 .…”

Section: Resultsmentioning

confidence: 99%

Chemical composition of heartwood and sapwood of Tectona grandis characterized by CG/MS-PY

Castro

Surdi

Fernandes

et al. 2022

Sci Rep

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Teak wood has chemical compounds that can be used for pharmaceutical and textile industries, in addition, this compounds are related to resistance to biodeterioration, color and modification processes. Heartwood and sapwood of T. grandis (teak), 15 years-old, were characterized by Py-CG/MS analysis and syringyl (S)/guaiacyl (G) ratio was evaluated. Heartwood and sapwood were pyrolyzed at 550 °C and 62 and 51 compounds were identified from them, respectively. The acetic acid (10%) and levoglucosan (26.65%) were the most abundant compound in the sapwood and heartwood, respectively. The high acetic acid content enhances the use of teak wood to production of artificial essences for perfumery, paints, dyes. While levoglucosan can be used in the manufacture of epoxy resins, antiparasitic and insecticides. The organic compounds identified include 2-methylanthraquinone as one of the main component responsible for the resistance of the teak wood to biological factors (fungi and termites). The syringyl (S)/guaiacyl (G) ratio of heartwood and sapwood was 0.51 and 0.50, respectively.

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Section: Resultsmentioning

confidence: 99%

Chemical composition of heartwood and sapwood of Tectona grandis characterized by CG/MS-PY

Castro

Surdi

Fernandes

et al. 2022

Sci Rep

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“…Acetate has garnered significant interest as a possible alternative fermentation feedstock due to its high solubility, bioavailability, and carbon-negative production routes. , By incorporating acetate into the bacteria metabolic pathway through acetyl-CoA intermediate, a large variety of products can be produced with high selectivity. ,,− A wide range of longer-chain acid products such as malate, succinate, and pyruvate have been demonstrated using acetate as a carbon feed source . Additionally, higher-value products such as acetoin and 2,3-BDE have also been produced fromEscherichia coli bacteria at >25% of the theoretical yields through selective breeding and genetic modification .…”

Section: Emerging Directions For Precision Fermentationmentioning

confidence: 99%

Turning Carbon Dioxide into Sustainable Food and Chemicals: How Electrosynthesized Acetate Is Paving the Way for Fermentation Innovation

et al. 2023

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Conspectus The agricultural and chemical industries are major contributors to climate change. To address this issue, hybrid electrocatalytic–biocatalytic systems have emerged as a promising solution for reducing the environmental impact of these key sectors while providing economic onboarding for carbon capture technology. Recent advancements in the production of acetate via CO2/CO electrolysis as well as advances in precision fermentation technology have prompted electrochemical acetate to be explored as an alternative carbon source for synthetic biology. Tandem CO2 electrolysis coupled with improved reactor design has accelerated the commercial viability of electrosynthesized acetate in recent years. Simultaneously, innovations in metabolic engineering have helped leverage pathways that facilitate acetate upgrading to higher carbons for sustainable food and chemical production via precision fermentation. Current precision fermentation technology has received much criticism for reliance upon food crop-derived sugars and starches as feedstock which compete with the human food chain. A shift toward electrosynthesized acetate feedstocks could help preserve arable land for a rapidly growing population. Technoeconomic analysis shows that using electrochemical acetate instead of glucose as a fermentation feedstock reduces the production costs of food and chemicals by 16% and offers improved market price stability. Moreover, given the rapid decline in utility-scale renewable electricity prices, electro-synthesized acetate may become more affordable than conventional production methods at scale. This work provides an outlook on strategies to further advance and scale-up electrochemical acetate production. Additional perspective is offered to help ensure the successful integration of electrosynthesized acetate and precision fermentation technologies. In the electrocatalytic step, it is critical that relatively high purity acetate can be produced in low-concentration electrolyte to help ensure that minimal treatment of the electrosynthesized acetate stream is needed prior to fermentation. In the biocatalytic step, it is critical that microbes with increased tolerances to elevated acetate concentrations are engineered to help promote acetate uptake and accelerate product formation. Additionally, tighter regulation of acetate metabolism via strain engineering is essential to improving cellular efficiency. The implementation of these strategies would allow the coupling of electrosynthesized acetate with precision fermentation to offer a promising approach to sustainably produce chemicals and food. Reducing the environmental impact of the chemical and agricultural sectors is necessary to avoid climate catastrophe and preserve the habitability of the planet for future generations.

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“…This can be either a gas-phase or aqueous-phase reaction and proceeds in high yields using a wide range of catalysts, including metal oxides and mixed metal oxides, hydrotalcites, and zeolites. 25,26 The acetic acid feed can be sourced by a range of sustainable technologies, including biogas processing, 27 aerobic fermentation of sugars, 28 or biomass pyrolysis (including hydrothermal methods) which generates acetic acid as a sizeable constituent of bio-oil. 29 Finally, most of the acetone now produced industrially is as a byproduct of the oxidation of the petrochemical cumene to phenol.…”

Section: Introductionmentioning

confidence: 99%

Operationally simple electrochemical method for the conversion of acetone into high-specification jet fuel

Shevchenko

Villafuerte

Ling

et al. 2023

Sustainable Energy Fuels

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Sustainable routes for acetic acid production: Traditional processes vs a low-carbon, biogas-based strategy

Cited by 28 publications

References 82 publications

Chemical composition of heartwood and sapwood of Tectona grandis characterized by CG/MS-PY

Chemical composition of heartwood and sapwood of Tectona grandis characterized by CG/MS-PY

Turning Carbon Dioxide into Sustainable Food and Chemicals: How Electrosynthesized Acetate Is Paving the Way for Fermentation Innovation

Operationally simple electrochemical method for the conversion of acetone into high-specification jet fuel

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