Decontamination of a rotating cutting tool during operation by means of atmospheric pressure plasmas

Leipold, F.; Kusano, Yukihiro; Hansen, Flemming; Jacobsen, Tomas

doi:10.1016/j.foodcont.2010.02.006

Cited by 72 publications

(40 citation statements)

References 33 publications

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“…The transmission maximum of the filter is at 254 nm where O 3 has an absorption maximum. The O 3 detector has previously been described [11]. Depending on the pretreatment progress, the O 3 concentration in the exhaust gas varied.…”

Section: Methodsmentioning

confidence: 99%

Plasma-Assisted Pretreatment of Wheat Straw for Ethanol Production

Schultz-Jensen

Kádár

Thomsen

et al. 2011

Appl Biochem Biotechnol

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The potential of wheat straw for ethanol production after pretreatment with O(3) generated in a plasma at atmospheric pressure and room temperature followed by fermentation was investigated. We found that cellulose and hemicellulose remained unaltered after ozonisation and a subsequent washing step, while lignin was degraded up to 95% by O(3). The loss of biomass after washing could be explained by the amount of lignin degraded. The washing water of pretreated samples (0-7 h) was analyzed for potential fermentation inhibitors. Approximately 30 lignin degradation products and a number of simple carboxylic acids and phenolic compounds were found, e.g., vanillic acid, acetic acid, and formic acid. Some components had the highest concentration at the beginning of the ozonisation process (0.5, 1 h), e.g., 4-hydroxybenzladehyde, while the concentration of others increased during the entire pretreatment (0-7 h), e.g., oxalic acid and acetovanillon. Interestingly, washing had no effect on the ethanol production with pretreatment times up to 1 h. Washing improved the glucose availability with pretreatment times of more than 2 h. One hour of ozonisation was found to be optimal for the use of washed and unwashed wheat straw for ethanol production (maximum ethanol yield, 52%). O(3) cost estimations were made for the production of ethanol at standard conditions.

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Section: Methodsmentioning

confidence: 99%

Plasma-Assisted Pretreatment of Wheat Straw for Ethanol Production

Schultz-Jensen

Kádár

Thomsen

et al. 2011

Appl Biochem Biotechnol

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“…Figure 7. Sketch of the experimental setup for plasma surface decontamination of a circular knife used for slicing in meat industry (according to Leipold et al (2010)). Eto et al (2008) describes a setup to decontaminate samples stored inside Tyvek packaging.…”

Section: Dielectric Barrier Dischargementioning

confidence: 99%

Low temperature atmospheric pressure plasma sources for microbial decontamination

Ehlbeck¹,

Schnabel²,

Polák³

et al. 2010

J. Phys. D: Appl. Phys.

643

415

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To cite this version:J EhlbeckAbstract. The aim of this article is to provide a survey of plasma sources at atmospheric pressure used for microbicidal treatment. In order to consider the interdisciplinary character of this topic an introduction and definition of basic terms and procedures is given for plasma as well as for microbicidal issues. The list of plasma sources makes no claim to be complete, but to represent the main principles of plasma generation at atmospheric pressure and to give an example of their microbicidal efficiency. The interpretation of the microbicidal results remain difficult due to the non standardized methods uses by different authors and due to the fact that small variations in the set up can change the results dramatically.

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“…The transmission maximum of the filter is at 254 nm where O 3 has an absorption maximum. The ozone measurement technique is detailed in [18]. Depending on the pretreatment progress, the O 3 concentration in the exhaust gas varied.…”

Section: The Pretreatmentmentioning

confidence: 99%

Improving Anaerobic Digestion of Wheat Straw by Plasma-Assisted Pretreatment

Heiske

Schultz-Jensen

Leipold

et al. 2013

Journal of Atomic and Molecular Physics

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Plasma-assisted pretreatment (PAP) of lignocellulosic biomass has been shown to be an efficient method to decompose lignin and consequently facilitate microbial access to cellulose and hemicellulose. In the present study, PAP was tested for its suitability to enhance bioconversion of wheat straw to methane. In thermophilic batch experiments, methane yields of up to 366 mL/g volatile solids (VSs) were achieved, accounting for a yield increase of 45%. Common lignin-derived inhibitors like 5-hydroxymethylfurfural (5-HMF) and furfural were not detected after PAP, but toxicity test resulted in lower methane yields at higher substrate concentrations, indicating the presence of other unidentified inhibitors. However, in a continuous lab-scale biogas reactor experiment, stable codigestion of cattle manure with 20% PAP wheat straw was demonstrated, while no signs of adverse effects on the anaerobic digestion process were observed. After the introduction of the pretreated wheat straw to the reactor, volatile fatty acid concentrations remained low and stable, while gas production increased. In co-digestion, the PAP wheat straw was converted at an average yield of 343 mL CH 4 /gVS.

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Decontamination of a rotating cutting tool during operation by means of atmospheric pressure plasmas

Cited by 72 publications

References 33 publications

Plasma-Assisted Pretreatment of Wheat Straw for Ethanol Production

Plasma-Assisted Pretreatment of Wheat Straw for Ethanol Production

Low temperature atmospheric pressure plasma sources for microbial decontamination

Improving Anaerobic Digestion of Wheat Straw by Plasma-Assisted Pretreatment

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