Now showing items 1-10 of 124
Biodegradation and toxicological evaluation of lubricant oils
(Brazilian Archives of Biology and Technology, 2012-12-01)
The aim of this work was to compare different toxicity levels of lubricant oils. The tests were performed using the earthworm (Eisenia andrei), arugula seeds (Eruca sativa) and lettuce seeds (Lactuca sativa), with three ...
Characterization of lubricating oil using ultrasound
This paper presents an ultrasonic method to measure small concentrations of water in lubricating oil. It uses an ultrasonic measurement cell composed by a piezoceramic emitter (5 and 10 MHz), and a large aperture PVDF ...
Applied models to biodegradation kinetics of lubricant and vegetable oils in wastewater
(Elsevier B.V., 2009-04-01)
Bioremediation technologies are used in order to remove pollutants from the environment in a safe, economical and harmless way during the treatment of waste, especially with the use of techniques such as biodegradation. A ...
Development and validation of an environmentally friendly attenuated total reflectance in the mid-infrared region method for the determination of ethanol content in used engine lubrication oil
Lubricating oils are crucial in the operation of automotive engines because they both reduce friction between moving parts and protect against corrosion. However, the performance of lubricant oil may be affected by ...
Study of alternative lubricants to the cold extrusion of steel shafts
(Elsevier Science SaLausanneSuíça, 2007)
Application of minimum quantity lubrication with addition of water in the grinding of alumina
Among the alternatives to reduce the application of cutting fluid in machining industry, minimum quantity lubrication (MQL) technique has been promising, although it can impair cooling properties and the ability of the ...
Different lubricating oil treatments for the determination of Cu, Cr, Fe, Ni, Sb, Pb, and Zn by HR-CS FAAS
(Taylor & Francis Inc, 2008-01-01)
Microwave-assisted acid decomposition, direct dilution in kerosene, and oil-in-water emulsion were evaluated as lubricating oil pretreatment procedures for Cu, Cr, Fe, Ni, Pb, Sb, and Zn determination by High-Resolution ...
Identification of lubricant contamination by biodiesel using vibration analysis and neural network
(Emerald Group Publishing Limited, 2012-01-01)
Purpose - The purpose of this paper is to provide information on lubricant contamination by biodiesel using vibration and neural network.Design/methodology/approach - The possible contamination of lubricants is verified ...
Geophysical investigation using resistivity and GPR methods: a case study of a lubricant oil waste disposal area in the city of Ribeiro Preto, So Paulo, Brazil
Geophysics has been shown to be effective in identifying areas contaminated by waste disposal, contributing to the greater efficiency of soundings programs and the installation of monitoring wells. In the study area, four ...
Evaluation of the biodegradation of different types of lubricant oils in liquid medium
(Brazilian Archives of Biology and Technology, 2009-10-01)
Avaliação da Biodegradação de Diferentes Tipos de Óleo Lubrificante em Meio Aquoso pela Norma Técnica L6.350 (CETESB, 1990), utiliza-se o processo respirométrico de Bartha e Pramer para acompanhar a biodegradação de ...