Downstream market analysis of used oils in Trinidad and Tobago to inform an appropriate waste management strategy

Boodlal, Donnie; Alexander, David; Zubaidy, Sarim Al; Charles, Maurissa

doi:10.1504/ijewm.2020.108060

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2023

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“…The amount of used lubricating oils (ULOs) has been growing exponentially worldwide, with the automotive sector as one of the leading ULO sources. ULOs are generated at gas stations, garages, mechanic workshops, car dealership showrooms, and other retail companies such as, truck fleets, transportation, and construction along with public transportation and airports [1].…”

Section: Introductionmentioning

confidence: 99%

Refining Used Lubricant Oils with Different Concentration Levels of Sulfuric Acid and Nonylphenol

Alvarez-Rivera¹,

Nájera²,

Urrieta-Saltijeral³

et al. 2023

Tribol. Ind.

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The purpose of this research was to evaluate the refining of used lubricating oils (ULOs), and their possible use as drilling fluids. 17 treatments were evaluated and sulfuric acid and nonylphenol were used as reagents at concentrations of 0.12, 0.24 and 0.36 g/mL and temperatures of 40, 60, 80 and 100 °C. AT80 and AT100 ULOs treated at 80 and 100 °C without reagents, presented an average density of 0.84 g/cm-3, a viscosity of 76.3 and 75.3 cP, an electrical stability of 1,731.3 and 1,394.6 V and a flash point of 183 and 190 °C as higher. The ST40C1 and ST40C2 treatments, added with reagents, showed similar results to AT80 and AT100 in the evaluated variables, but they are more expensive treatments. According to the results, it is concluded that the refined ULO can be a substitute for the oil used in the formulation of oil-based drilling fluids.

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Section: Introductionmentioning

confidence: 99%