Superlow friction of high mileage used oil with CuDTC in presence of MoDTC

2017 ◽  
Vol 69 (2) ◽  
pp. 190-198 ◽  
Author(s):  
Qunfeng Zeng
Keyword(s):  
Lubricant Additive ◽  
Life Extension ◽  
Lubricating Oil ◽  
Tribochemical Reaction ◽  
Content Type ◽  
Used Oil ◽  
Abnormal Phenomenon ◽  
Used Lubricating Oil ◽  
First Time ◽  
Thinning Effect

Purpose The purpose of this paper is to improve the antifriction and antiabrasive behavior of the used oil through the addition of a lubricant. Design/methodology/approach The author selected 85W-90 used oil with three kinds of 4,758, 10,507 and 16,223 km mileages, which may represent run-in wear period, steady-state wear period and rapid wear for used oil, respectively. Nano copper, molybdenum dithiocarbamate (MoDTC) and copper dioctyl dithiocarbamate (CuDTC) of lubricant additive are added to the used oil to improve its antifriction performances and service life. The influence of lubricant additive on the tribological properties of used oil is investigated by the friction tests. Findings An abnormal phenomenon has been observed by the friction test under high mileage used oil with CuDTC in presence of MoDTC lubrication, and superlow friction coefficient of 0.04 has been achieved after a running-in period for the first time. It is found that CuDTC additive is beneficial to improve greatly the antifriction behavior of used oil, especially when MoDTC is present. The results indicate that the dissoluble of CuDTC and the tribochemical reaction of MoDTC play an important role in superlow friction of high mileage used oil. Moreover, the superlow friction is also closely related to the viscosity of used oil. Originality/value The possible mechanism of superlow friction is attributed to the additive thinning effect and the synergistic effect of the dissoluble of CuDTC and the tribochemical reaction of MoDTC binary lubricant additives in high mileage used oil. This work will extend the application of CuDTC additive widely and explore a new method to the reutilization and the life extension of used lubricating oil.

Optimization and validation of an environmentally friendly method for zinc determination in new and used lubricating oil samples

2016 ◽  
Vol 8 (48) ◽  
pp. 8435-8442 ◽  
Author(s):  
Mariana F. B. Mota ◽  
Ednilton M. Gama ◽  
Guilherme D. Rodrigues ◽  
Letícia M. Costa
Keyword(s):  
Environmentally Friendly ◽  
Lubricating Oil ◽  
Phase System ◽  
Two Phase ◽  
Aqueous Two Phase System ◽  
Used Lubricating Oil ◽  
Zinc Determination ◽  
First Time ◽  
Environmentally Friendly Method

This work presents the optimization and validation of a new environmentally friendly method for zinc quantification in new and used lubricating oil samples, using, for the first time, the extracting agent diphenylthiocarbazone (dithizone) associated with the aqueous two-phase system (ATPS).

scholarly journals Draft Genome Sequence of Pseudomonas aeruginosa Strain Hex1T Isolated from Soils Contaminated with Used Lubricating Oil in Argentina

2017 ◽  
Vol 5 (2) ◽  
Author(s):  
Adela M. Luján ◽  
Sofía Feliziani ◽  
Andrea M. Smania
Keyword(s):  
Energy Source ◽  
Pseudomonas Aeruginosa ◽  
Genome Sequence ◽  
Draft Genome ◽  
Heavy Metal Resistance ◽  
Metal Resistance ◽  
Draft Genome Sequence ◽  
Lubricating Oil ◽  
Content Type ◽  
Used Lubricating Oil

ABSTRACT Pseudomonas aeruginosa Hex1T was isolated from soils contaminated with used lubricating oil from a garage in Córdoba, Argentina. This strain is capable of utilizing this pollutant as the sole carbon and energy source. Here, we present the 6.9-Mb draft genome sequence of Hex1T, which contains many heavy metal-resistance genes.

Tribological performance of commercial Mobil grade lubricants operating with titanium dioxide nanoparticle additives

2019 ◽  
Vol 71 (2) ◽  
pp. 188-198 ◽  
Author(s):  
Shubham Rajendra Suryawanshi ◽  
Jayant T. Pattiwar
Keyword(s):  
Titanium Dioxide ◽  
Titanium Dioxide Nanoparticles ◽  
Frictional Coefficient ◽  
Lubricant Additive ◽  
Tribological Performance ◽  
Operating Conditions ◽  
Asperity Contact ◽  
Wear Properties ◽  
Tribochemical Reaction ◽  
Content Type

Purpose The purpose of this study is to investigate the tribological performance (anti-friction and anti-wear properties) of commercial Mobil grade lubricants used in a journal bearing system in a power plant. Design/methodology/approach Three grades of Mobil lubricants (DTE 24, DTE 25 and DTE 26) are considered during the study. Titanium dioxide nanoparticles (TiO2, 0.5 Wt.%) of size 40 nm are used as a lubricant additive to examine the performance of the lubricants. The viscosity of the lubricant is computed using modified Krieger–Dougherty viscosity model. The morphology of TiO2 nanoparticles is studied with the help of scanning electron microscopy, ultra violet spectrophotometer and X-ray diffraction. The study of antifriction and antiwear properties for lubricants is carried out on four-ball tribo-tester for operating conditions specified by ASTM standards. Findings The tribochemical reaction film is formed between ball surfaces during the experiments on four-ball tester that minimizes the asperity contact due to addition of TiO2 nanoparticles in the lubricant. The viscosity of the lubricant is enhanced due to the addition of TiO2 nanoparticles. The frictional coefficient and wear scar diameters of balls in the lubricants are reduced in the range of 6-26 and 2-7 per cent, respectively. Originality/value The tribological properties of TiO2 as a lubricant additive in three commercial Mobil grade lubricants are investigated in this paper. The results obtained in this paper are expected to be helpful to bearing designers, researchers and academicians concerned with the relevant study.

Synthesis and properties of thiadiazole lubricant additives

2017 ◽  
Vol 69 (6) ◽  
pp. 891-896 ◽  
Author(s):  
Weiguo Xue ◽  
Wenquan Ma ◽  
Xiaohong Xu ◽  
Tao Li ◽  
Xuguang Zhou ◽  
...  
Keyword(s):  
Lubricant Additive ◽  
Tribological Performance ◽  
Lubricant Additives ◽  
Lubricating Oil ◽  
Scanning Calorimetry ◽  
Content Type ◽  
Wear And Corrosion ◽  
Potential Alternative ◽  
Anticorrosion Performance ◽  
Wear And Corrosion Resistance

Purpose Thiadiazole compounds and their derivatives have carrying capacity and good lubricating properties. However, their poor oil-solubility limited their wide usage in lubricating oil. The study aims to develop thiadiazole lubricant additives with better oil-solubility. When the hindered phenol antioxidation functional group and alkyl-chain are introduced to thiadiazole, the resulting product could have better oil-solubility and excellent antioxidation resistance, anti-wear and corrosion resistance in the lubricating oil. Design/methodology/approach One kind of thiadiazole lubricant additive, for the first time, has been synthesized from 2,5-dimercapto-1,3,4-thiadiazole. Its tribological performance has also been evaluated by four-ball test. And, its oxidation resistance has been estimated by rotating pressure vessel oxidation test and pressurized differential scanning calorimetry. The anticorrosion performance of such an additive has been studied by GB/T 5096 standard method test. Findings The synthesized thiadiazole additive has excellent anti-oxidation capability, good anti-wear and extreme pressure properties and good anticorrosion performance, in comparison with zinc dialkyl dithiophosphate (ZDDP). In base oils, the comprehensive performance of thiadiazole additive is comparable to ZDDP. Mechanistic studies indicate that the S and N active elements were involved in the formation of a boundary film. This may account for the formation of a composite membrane on the metal surface and thus for the tribological performance of such thiadiazole additives. Originality/value The thiadiazole derivatives, which are ashless and have environmentally friendly features, are a potential alternative to ZDDP. Because of the film formed on the friction surface, thiadiazole compounds may serve as an excellent anti-wear additive and are expected to reduce friction and wear between metals.

Implementing an integrated maintenance management system for monitoring production lines: a case study for biscuit industry

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Mokhtar Ali Amrani ◽  
Mansour Alhomdi ◽  
Badiea Aswaidy M ◽  
Atef M. Ghaleb ◽  
Mohyeddine Al-Qubati ◽  
...  
Keyword(s):  
Wear Debris ◽  
Maintenance Management ◽  
Lubricating Oil ◽  
Medium Size ◽  
Management Approach ◽  
Production Lines ◽  
Content Type ◽  
Integrated Diagnosis ◽  
Robust Decisions ◽  
Used Lubricating Oil

PurposeThis study provides a unique integrated diagnosis system to investigate the causes of low productivity, profitability, machinery health conditions and wear severity of medium-size biscuit industry assets in Taiz, Yemen.Design/methodology/approachThe evaluation is based on an integrating of the overall equipment effectiveness (OEE) and oil-based maintenance (OBM) approaches. The data are collected using the company's operational records, interviews and observations, while the used lubricating oil samples are also collected from production lines' machineries. Scanning electron microscope (SEM) is used to study the wear debris particle features and wear mechanism. Different other analysis tools such as fishbone, 5 whys and Pareto charts are also used to investigate the root causes and plausible recovery solutions of machinery failures.FindingsThis study demonstrated that a large proportion of machinery failures and production loss are of management concerns. Also, this study inferred that the analysis of wear debris is unique and informative for determining machinery wear severity and useful life. Finally, the current conditions of production lines are clarified and suggestions to use a mixed preventive/predictive maintenance management approach are also elucidated.Originality/valueThis work implemented an integrated OEE/OBM diagnostic maintenance system to investigate the root causes of low productivity and machine failures in real production lines and suggested robust decisions on the maintenance duties.

Asphalt modification with used lubricating oil

2008 ◽  
Vol 35 (2) ◽  
pp. 148-157 ◽  
Author(s):  
Aaron Villanueva ◽  
Susanna Ho ◽  
Ludo Zanzotto
Keyword(s):  
Low Temperature ◽  
Performance Test ◽  
Field Performance ◽  
Lubricating Oil ◽  
Modified Asphalt ◽  
Used Oil ◽  
Performance Grade ◽  
Asphalt Modification ◽  
Used Lubricating Oil ◽  
Oil Modification

The viability of used lubricating oil as an asphalt modifier was studied, with the enhancement of the low-temperature grade as the specific goal. Used oil modification was found to improve the Superpave low-temperature performance grade (PG), but at the expense of the high-temperature PG grade. When evaluated according to the Superpave MP1 specification, the low-temperature grade of the modified asphalt was not significantly improved due to failure of the bending beam rheometer (BBR) test’s m value. When evaluated according to the Superpave MP1a specification, the modified asphalt overall PG grade temperature spread remained essentially constant, varying only by approximately two degrees. The asphalt took as much as 12% of oil and still had less than the maximum limit of 1.0% rolling thin film oven test (RTFOT) mass loss (emissions). However, the oil may possibly have a detrimental effect on the asphalt quality, such as reduced adhesiveness to the aggregates, leading to stripping and raveling. The field performance test should be checked before considering lubricating oil as a modifier.

scholarly journals IDENTIFIKASI KESELAMATAN PENANGANAN LIMBAH PELUMAS PADA PT.ALTRAK 1978 BALIKPAPAN

2017 ◽  
Vol 4 (1) ◽  
pp. 32
Author(s):  
Veza Azteria ◽  
Jamal Efendi
Keyword(s):  
Human Activities ◽  
Evaluation Research ◽  
Safety Analysis ◽  
Lubricating Oil ◽  
Know How ◽  
Used Oil ◽  
Job Safety ◽  
Used Lubricating Oil

One of the B3 waste that needs to get special handling because it is produced in high amount in the society is the oil used oil (used oil). Used lubricating oil is produced from various human activities such as, industry, mining, and workshop. The purpose of this research is to know how to identify the handling safety of lubricant waste at PT.ALTRAK 1978 Balikpapan and to determine the proper controlling step. This research is designed as an observational descriptive evaluation research conducted by checklist, JSA (Job Safety Analysis) with observation, analyze , Observation and processing of data and information that has been collected systematically. The results showed that the handling of lubricant waste in PT.ALTRAK 1978 Balikpapan get the results of the value by using a percentage calculation of 72% if adjusted to the operational standard of the procedure is included in the assessment with enough results.Identifikasi safety handling lubricant waste in PT.ALTRAK 1978 Balikpapan can be done By making JSA (Job Safety Analysis) as well as adjustment to standard operational procedures with the implementation of the field.

Conference report: innovation, interaction … and a lot of data: first time reflections on Internet Librarian International, UK 2018

2019 ◽  
Vol 36 (2) ◽  
pp. 21-22
Author(s):  
Ray Harper
Keyword(s):  
Best Practice ◽  
New Technologies ◽  
Conference Report ◽  
Library Services ◽  
New Techniques ◽  
Content Type ◽  
Making A Difference ◽  
Analyse Data ◽  
Physical Spaces ◽  
First Time

Purpose The purpose of this paper is to summarise a number of presentations at Day 1 of the Internet Librarian International conference, London, UK (16 October 2018). This was the 20th conference in the series, and the three key themes included were the next-gen library and librarian; understanding users, usage and user experience; and inclusion and inspiration: libraries making a difference. Design/methodology/approach This paper reports from the viewpoint of a first-time attendee of the conference. This summarises the main issues raised by each presentation and draws out the key learning points for practical situations. Findings The conference covered a variety of practical ways in which libraries can use technology to support users and make decisions about services. These include developing interactive physical spaces which include augmented reality; introducing “chat-bots” to support users; using new techniques to analyse data; and piloting new ways to engage users (such as coding clubs). A key theme was how we use and harness data in a way that is ethical, effective and relevant to library services. Originality/value This conference focussed on practical examples of how library and information services across sectors and countries are innovating in a period of huge change. The conference gave delegates numerous useful ideas and examples of best practice and demonstrated the strength of the profession in adapting to new technologies and developments.

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