Vegetable oils as a potential cutting fluid—An evolution

Shashidhara, Y. M.; Jayaram, S. R.

doi:10.1016/j.triboint.2009.12.065

Cited by 426 publications

(175 citation statements)

References 43 publications

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“…From the viewpoint of the qualities required of metal working fluids, the advantages and disadvantages of vegetable oils as lubricants were listed (Table 1) [25].…”

Section: Eco-/bio-lubricantsmentioning

confidence: 99%

Green tribology: Fundamentals and future development

Zhang

2013

Friction

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Abstract:As green tribology is a new field of tribology still in its infancy, understanding its fundamentals is essential for its further development. In this article, a brief historical retrospective on the emergence of green tribology is introduced first, and then the definition, objectives, and disciplinary features of green tribology are clarified. In particular, the technological connotations of green tribology are expounded comprehensively. Also, the developing directions of this new area are envisaged. These findings may contribute to laying the foundation of further advancement in green tribology.Keywords: green tribology; technological connotations; environmental impact; biological impact; developing directions BackgroundSince the 1980s, energy and environmental problems on a global scale have increased in severity year by year. Against this background, the objectives of tribology expanded gradually, and then some tribologists successively put forward several new notions: "tribology for energy conservation" (1997), "environmental friendly tribology" (2000), and "ecological tribology or ecotribology" (2000). In particular, after entering the new millennium, tribology was expected to have an increasingly important role to play along with the crises of resources, energy, and environment being aggravated in the world. Its basic objectives of "controlling friction, reducing wear, and improving lubrication" have extended to "saving energy and materials, reducing emissions, shock absorption, decreasing noise pollution, developing bio-and ecolubrication and improving quality of life." It is noticeable that tribology has developed into a new phase. In 2001, to mirror this change in objectives of tribology, a term/area "green tribology" was advanced by the present author at a national symposium on tribology in China. A paper was published from this conference [1], in which the concept and objectives of green tribology were clarified. Soon after, another two expressions also emerged successively, namely, "total tribology" (2001)(2002) and "lifecycle tribology" (2004). In 2008, the concept of green tribology was raised again by the present author at the 5th China International Symposium on Tribology in a plenary lecture, which was intended to replace similar notions as mentioned above [2]. In the lecture, an investigation of the industrial application of tribology in China was presented. It was found that the industrial enterprises of the whole nation can save 414.8 hundred million USD per year (a lowest figure selected) (1.55% of gross national product, GNP, 2006) by means of the industrial application of tribology. Just based on this investigation, it was concluded that "making tribology green"/green tribology is now able to provide full technical support to the preservation of resources and energy, environmental protection, and improvement of quality of life, and even to reduce natural disasters, and so it is certainly an important way forward to a

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“…From the viewpoint of the qualities required of metal working fluids, the advantages and disadvantages of vegetable oils as lubricants were listed (Table 1) [25].…”

Section: Eco-/bio-lubricantsmentioning

confidence: 99%

Green tribology: Fundamentals and future development

Zhang

2013

Friction

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“…The major negative effect on the environment is particularly linked to its inappropriate use, which results in the surface water and groundwater contamination, air pollution, soil contamination, and consequently, the agricultural product and food contamination (14). If these materials escape to the environment, the impacts tend to be cumulative and consequently harmful to plant, fish, and wildlife (15).…”

Section: Base Oilsmentioning

confidence: 99%

Human Health Concenrs of Metalworking Fluid Components

Gerulová

Buranská

Soldán

2017

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

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“…MWFs are industrial fluids used in metal grinding and cutting where they act as lubricants, cooling factors and rust controlling agents in machining processes [1,3,4]. Nowadays, technological practice is dominated by the use of mineral oil-based MWFs, occurring especially in the emulsified (O/W) form [1,4], besides the efforts to introduce biologically-based MWFs and synthetic fluids [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Bioremediation Of A Spent Metalworking Fluid With Auto- And Allochthonous Bacterial Consortia

Kaszycki

Petryszak

Supel

2015

Ecological Chemistry and Engineering S

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Spent mineral oil-based metalworking fluids are waste products of the machining processes and contribute substantially to the global industrial pollution with petroleum oil products. Wastewaters containing oily emulsions are ecologically hazardous and thus a variety of methods have been implemented to prevent these effluents from affecting the natural environment. Most of these methods rely upon physical-chemical treatment and phase separation; however, none of them proved to be effective enough to meet tightening environmental regulations. Therefore, novel technologies need to be elaborated and there is growing interest in implementing biological treatment methods based on microbial bioremediation. In this study an oil/water emulsion obtained from a waste stream of the metal-processing industry was tested for biodegradability of its organic constituents. This liquid waste was found non-toxic to bacterial consortia and was colonized with indigenous microorganisms (approx. 10 7 cfu · cm -3). The total load of organic content was determined as a chemical oxygen demand (COD) value of 48 200 mg O2 · dm -3. Emulsion treatment was carried out using a threefold wastewater dilution and employing two variants of biostimulated aerobic bacterial communities: (1) uninoculated emulsion, where bioremediation was carried out by the autochthonous bacteria alone, and (2) wastewater samples inoculated with a ZB-01 microbial consortium which served as a source of specialized bacteria for process bioaugmentation. Biodegradation efficiency achieved in a 14-day test was monitored by measuring both the COD parameter and the concentration of high-boiling organic compounds. Both approaches yielded satisfactory results showing significant reduction of the emulsion organic fraction; however, the resultant decrease of wastewater load tended to be more efficient for the case where the process was bioaugmented with the inoculated consortium. Gas chromatography analyses coupled with mass spectrometric detection (GC-MS) confirmed high degradation yields obtained for both cases studied (58 and 71%, respectively) in a 28-day test. It is concluded that oil-based metalworking emulsions can undergo efficient biological treatment under conditions enabling aerobic bacterial proliferation and that xenobiotic biodegradation kinetics can be accelerated by bioaugmenting the process with allochthonous microbial consortia.

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Vegetable oils as a potential cutting fluid—An evolution

Cited by 426 publications

References 43 publications

Green tribology: Fundamentals and future development

Green tribology: Fundamentals and future development

Human Health Concenrs of Metalworking Fluid Components

Bioremediation Of A Spent Metalworking Fluid With Auto- And Allochthonous Bacterial Consortia

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