Reactive extraction of acetic acid and propionic acid using supercritical carbon dioxide

Henczka, Marek; Djas, Małgorzata

doi:10.1016/j.supflu.2015.11.018

Cited by 36 publications

(10 citation statements)

References 30 publications

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“…Therefore, the isolation of acetic acid from the pyrolysis liquid may not only create a different renewable source to obtain this chemical, but also make the pyrolysis liquid more economically attractive. There are some studies in the literature on the isolation of acetic acid from pyrolysis bio‐oil by means of reactive extractions with tri‐ n ‐octylamine or supercritical carbon dioxide …”

Section: Resultsmentioning

confidence: 99%

Assessment of the Production of Value‐Added Chemical Compounds from Sewage Sludge Pyrolysis Liquids

et al. 2016

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A procedure to analyze sewage sludge (SS) pyrolysis liquids based on solvent fractionation has been developed. Pyrolysis liquids are separated into three different fractions: heptane soluble (Hep‐sol), dichloromethane soluble (DCM‐sol), and hydrochloric acid soluble (HCl‐sol). Diverse techniques (GC‐MS, UPLC‐TOF‐MS) were employed to qualitatively and quantitatively analyze liquid fractions to assess the potential production of value‐added chemicals. Aliphatic hydrocarbons, aliphatic nitriles, and steroids were mostly separated in the Hep‐sol fraction, phenols and fatty acids in the DCM‐sol fraction, and carboxylic acids and amides in the HCl‐sol fraction. The largest production was obtained for ammonia (10–14 kg per tonne of SS) and α‐olefins (8–9 kg per tonne of SS). The potential production of some of these value‐added chemicals from SS pyrolysis liquid was compared with their current European production. In the case of α‐olefins, 16 % of their European production could be achieved by SS pyrolysis.

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Section: Resultsmentioning

confidence: 99%

Assessment of the Production of Value‐Added Chemical Compounds from Sewage Sludge Pyrolysis Liquids

et al. 2016

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“…The fermentation broth with free cells was circulated through the EBA column to separate the propionic acid in the expanded bed every 12-24 h, when 10 g*L -1 propionic acid was produced. To optimize the fermentation performance, a strategy of gradually adding feedstock was employed, in which glycerol was introduced at set times (12,24,48, and 72 h) with a constant mass ratio of 2.5 to glucose. When glycerol was added after 48 h, the highest product concentration (propionic acid: 42.7 g*L -1 ), the highest yield (propionic acid: 0.71 g*g -1 ), and highest productivity (propionic acid: 0.36 g*L -1 *h -1 ) of this experiment were obtained [46].…”

Section: Propionic Acid Yieldmentioning

confidence: 99%

“…Around half of the total production costs are associated with downstream processing [48], therefore these improvements have a similar impact to developments on fermentation processes. As a result this overview introduces the possible processes with regard to model solutions.…”

Section: Propionic Acid Recoverymentioning

confidence: 99%

“…Extractants such as hydrocarbons, phosphorous, and aliphatic amines are mainly used in the reactive extraction of carboxylic acids [56]. Investigations have been conducted into the reactive extraction of propionic acid using tri-n-octylamine in sCO 2 [48].…”

Section: Primary Recoverymentioning

confidence: 99%

“…This method is environmentally unfriendly and expensive. It requires large amounts of sulphuric acid and generates a solid by-product in the form of calcium sulphate [48,51].…”

Section: Primary Recoverymentioning

confidence: 99%

See 2 more Smart Citations

Bio-produced Propionic Acid: A Review

Vidra

Németh

2017

Period. Polytech. Chem. Eng.

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Inhibitory effect and possible mechanism of phenyllactic acid on Aspergillus flavus spore germination

Yao

Meng

2022

J Basic Microbiol

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Phenyllactic acid (PLA) has gained a lot of attention due to its broad antimicrobial activity, but the mechanism of its antifungal action has been barely reported until now. Herein, the inhibitory activity of PLA against Aspergillus flavus spore germination and its mechanism were preliminarily investigated. Results indicated that PLA had a strong antifungal activity against A. flavus with the minimal inhibitory concentration (MIC) and minimal fungicidal concentration (MFC) of 6 and 12 mg/ml, respectively. As observed by scanning electron microscopy (SEM), the A. flavus spores displayed wrinkled and shrunken appearance after treatment with PLA. In addition, the permeability and integrity of A. flavus cell membrane were changed obviously after PLA treatment as indicated by the propidium iodide (PI) staining results, which was further confirmed by a rise in electric conductivity and increased leakage of intracellular protein and nucleic acid. Furthermore, reduced activities of mitochondrial ATPase and dehydrogenases caused by PLA were also observed in A. flavus spores, with a result of remarkable decrease in ATP synthesis. Therefore, it could be concluded that PLA was effective in inhibiting spore germination of A. flavus mainly by disrupting cell membrane and interfering with mitochondrial energy metabolism.

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Reactive extraction of acetic acid and propionic acid using supercritical carbon dioxide

Cited by 36 publications

References 30 publications

Assessment of the Production of Value‐Added Chemical Compounds from Sewage Sludge Pyrolysis Liquids

Assessment of the Production of Value‐Added Chemical Compounds from Sewage Sludge Pyrolysis Liquids

Bio-produced Propionic Acid: A Review

Inhibitory effect and possible mechanism of phenyllactic acid on Aspergillus flavus spore germination

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