Test on evaluation method for biodegradability of lubricants

Yang, Lihe; Zhu, Yong; Guo-chen, Fan; Sun, Yan; Xie, Shuguang

doi:10.1007/s12209-008-0012-z

Cited by 7 publications

(8 citation statements)

References 8 publications

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“…For evaluating the effect of oleoyl glycine on biodegradation of mineral oils, different weight percentage of oleoyl glycine, namely, 0.0, 0.2, 0.5, 1.0, 1.5, 2.0 and 2.5 percent, were incorporated into HVI 350 mineral oil. The biodegradabilities of the formulated oils were evaluated by means of a fast method for determining biodegradability of lubricants created by the authors, the principle and operation processes of which were particularly expatiated in the reference (Fang and Chen, 2004). In short, determination of biodegradability of a lubricant by this method is conducted by parallel biodegradation reactions of the lubricant and the reference substance oleic acid.…”

Section: Methodsmentioning

confidence: 99%

“…The biodegradabilities of the formulated oils were evaluated by means of a fast method for determining biodegradability of lubricants created by the authors, the principle and operation processes of which were particularly expatiated in the reference (Fang and Chen, 2004). In short, determination of biodegradability of a lubricant by this method is conducted by parallel biodegradation reactions of the lubricant and the reference substance oleic acid.…”

Section: Biodegradation Testmentioning

confidence: 99%

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Impact of oleoyl glycine on biodegradability and lubricity of lubricating oil

Chen

Huang

Fang

2012

Industrial Lubrication and Tribology

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Purpose -The purpose of this paper is to understand the impacts of oleoyl glycine on biodegradation, friction and wear performances of a mineral lubricating oil. Design/methodology/approach -The biodegradabilities of a neat oil and its formulations with oleoyl glycine were evaluated on a biodegradation tester and the microbial characters in the biodegradation sewage observed through a microscope. Also, the friction and wear performances of neat oil and the formulated oil were determined on a four-ball tribometer. The morphologies and tribochemical features of the worn surfaces were analyzed by scanning electron microscopy and X-ray photoelectron spectroscopy. Findings -Oleoyl glycine markedly enhanced biodegradation of unreadily biodegradable mineral oil and effectively improved its anti-wear and friction-reducing abilities. The enhancement of biodegradability of the mineral oil was preliminarily ascribed to the increment of microbial populations in the biodegradation processes, while the improvement of anti-wear and friction-reducing abilities was mainly attributed to the formation of a boundary adsorption film of oleoyl glycine on the friction surfaces. Originality/value -Oleoyl glycine is a biodegradable and low eco-toxic compound. The authors' work has shown that oleoyl glycine is effective in improving biodegradability and tribological performances of mineral lubricants. Enhancing biodegradability of petroleum-based lubricants by additives is a new attempt. The paper has significance for improving ecological and tribological performances of mineral lubricants, even for developing petroleum-based biodegradable lubricants.

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Section: Methodsmentioning

confidence: 99%

Section: Biodegradation Testmentioning

confidence: 99%

Impact of oleoyl glycine on biodegradability and lubricity of lubricating oil

Chen

Huang

Fang

2012

Industrial Lubrication and Tribology

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“…Hence, biodegradability studies are of significance for developing eco-friendly lubricants, devising corrective measures for cleanup in case of spillage and meeting the legislation governing the manufacture and use of lubricants in some countries. It is now a common practice in lubricant industry to assess the biodegradability of lubricants in the aquatic environment, and laboratory data are available for a wide range of products [12].…”

Section: Biodegradablity Of Mwfsmentioning

confidence: 99%

“…Although the CEC test is only recommended for use with two-stroke outboard engine lubricants, it has been shown to be applicable to other lubricants. Because the CEC extraction solvent (1,1,2-trichlorotrifluorethane) is an ozone-depleting chemical, its supply and use are restricted by the Montreal Protocol it can be replaced by CCl 4 as extraction solvent [12]. ASTM test method D 5864 determines lubricant biodegradation.…”

Section: Biodegradablity Of Mwfsmentioning

confidence: 99%

Preliminary Ecotoxicity and Biodegradability Assessment of Metalworking Fluids

Gerulová¹,

Amcha²,

Filická³

2010

Research Papers Faculty of Materials Science and Technology Slovak University of Technology

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Preliminary Ecotoxicity and Biodegradability Assessment of Metalworking Fluids The main aim of this study was to evaluate the potential of activated sludge from sewage treatment plant to degrade selected MWFs (ecotoxicity to bacterial consortium) and to evaluate the ecotoxicity by Lemna minor-higher plant. After evaluating the ecotoxicity, biodegradations rate with activated sludge was assessed on the basis of COD measurement. Preliminary study of measuring the ecotoxicity according to OECD 221 by Lemna minor shows effective concentration of Emulzin H at the rate of 81.6 mg l-1, for Ecocool 82.9 mg l-1, for BC 25 about 99.3 mg l-1, and for Dasnobor about 97.3 mg l-1. Preliminary study of measuring the ecotoxicity by bacterial consortium according to OECD 209 (STN EN ISO 8192) shows effective concentration of Blasocut BC 25 at the rate 227.4 mg l-1. According to OECD 302B, the biodegradations level of Emulzin H, Ecocool and BC 25 achieved 80% in 10 days. It can be stated that these MWFs have potential to ultimate degradation, but the statement has to be confirmed by a biodegradability test with other parameters than COD, which exhibits some disadvantages in testing O/W emulsions.

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“…Synthetic resins are generally less prone to chemical, physical, and biological degradation than other organic products, but many articles in the scientific literature (Boars, 1970;Eggins et al, 1971;Valente, 1987;Albertsson and Karlsson, 1993;Nakajima-Kambe et al, 1999) and cultural heritage protection literature claim that microorganisms can degrade synthetic resins. The biodegradability of a synthetic resin can be tested in different ways (Yang et al, 2008). The current standard methods for assessing the antimicrobial properties of synthetic resins are ASTM G21-96 (2002), "Standard Practices for Determining Antifungal Properties of Synthetic Polymeric Materials," and ASTM G29-96 (2002), "Standard Practices."…”

Section: Introductionmentioning

confidence: 99%

Analysis of Microbial Community in the Archaeological Ruins of Liangzhu City and Study on Protective Materials

et al. 2020

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This study aims to provide a reference for the protection of the Archaeological Ruins of Liangzhu City. As a basis for the further preservation of these cultural relics, it is essential to analyze the microflora colonizing these soil objects. To do that, samples with microbial characteristics were obtained and analyzed by SEM and metagenomic sequencing to reveal the constitute of the microflora. We investigated the biodegradation of the protective material-epoxy resin by microorganisms in the Archaeological Ruins of Liangzhu City, and found that they would interact with each other, which would affect the performance of the epoxy resin. The specific mechanism of action requires further investigations. We evaluated the effect of ethyl orthosilicate on soil properties. Interestingly, we found that excess ethyl orthosilicate added to the soil of the Archaeological Ruins of Liangzhu City will cause a change in particle size and allowed the soil to condense in the laboratory. This indicates that the large use of orthosilicate may lead to intensified soil weathering, which in turn will cause soil erosion.

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Test on evaluation method for biodegradability of lubricants

Cited by 7 publications

References 8 publications

Impact of oleoyl glycine on biodegradability and lubricity of lubricating oil

Impact of oleoyl glycine on biodegradability and lubricity of lubricating oil

Preliminary Ecotoxicity and Biodegradability Assessment of Metalworking Fluids

Analysis of Microbial Community in the Archaeological Ruins of Liangzhu City and Study on Protective Materials

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