Some aspects of the regeneration of used motor oil

Stan, Cornelia; Andreescu, Cristian; Toma, Marius

doi:10.1016/j.promfg.2018.03.102

Cited by 15 publications

(10 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…3c). The bands at 3705 and 3618 cm -1 corresponded to the hydroxyl mixture of clay minerals (palygorskite and kaolinite) linked to metal (Me), where Me corresponds to the ions Al 3+ , Mg 2+ or Fe 3+ [30][31][32][33][34][35][36]. The bands in the range from 3406 to 3516 cm -1 were attributed to the elongation vibrational mode of water absorbed by clay [12].…”

Section: Resultsmentioning

confidence: 99%

“…The band at 796 cm -1 was attributed to the quartz impurity crystalline phase [34]. The bands at 682 and 537 cm -1 were attributed to angular deformation of Si-O-Me [33], and around 467 cm -1 corresponded to Si-O-Si [37][38][39][40]. After the chemical modification, the bands from 3706 to 3406 cm -1 disappeared in both CTKOH and CTH 2 SO 4 spectra.…”

Section: Resultsmentioning

confidence: 99%

“…The second event occurred between 151 and 292 °C with a loss of mass (PM2) of 0.72%. The third event with a less intense band than CNAT occurred in the range between 292 and 597 °C with loss of mass (PM3) of 2.03% and was related to water loss and loss of the hydroxyls of the silanol (Si-OH) and aluminol groups (Al-OH) [19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37]. Above 600 °C, no further loss of mass occurred in the clay and therefore, a total mass loss of 9.08% was observed.…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Clarification of used lubricating oils by application of chemically-modified clays

et al. 2020

View full text Add to dashboard Cite

Clay is a material that exhibits excellent adsorbent properties which can be applied for the clarification of used motor oils. We describe a comparative analysis between natural and chemically-modified clays as an environmentally sound method of clarification. Previously, a sample of clay was chemically treated with KOH and H2SO4 with a concentration of 2.0 M at 150 °C. Both the natural and chemically-treated samples were characterized using the techniques of XRD, FTIR, SSA, and thermal analysis to observe the structural change after the chemical treatment. These characterizations indicated that there was an increase in surface area and microporous space creation in the acid-treated sample as a result of the clay exfoliation. The acid-treated sample exhibited the potential of clarification of waste oil and high performance relative to the natural sample and the base-treated sample.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Clarification of used lubricating oils by application of chemically-modified clays

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Spain [43] Finishing Adsorption, neutralization, sedimentation, and filtration. Romania [61], Nigeria [47] Filtration and heating South Africa [48] Filtration Colombia [5] Adsorption Kazakhstan [46], Egypt [56], Iraq [53], Nigeria [60], Iran [62], UAE [44] Recycling 2021, 6, x FOR PEER REVIEW 14 of 23…”

Section: Fractionation Of the Basesmentioning

confidence: 99%

Characterization of Used Lubricant Oil in a Latin-American Medium-Size City and Analysis of Options for Its Regeneration

et al. 2021

View full text Add to dashboard Cite

Petroleum-derived products, such as lubricant oils, are non-renewable resources that, after use, must be collected and processed properly to avoid negative environmental impacts. A circular economy of used oils requires the re-refining and reuse of the same. Similar to most countries in Latin America, the management of used oils in Ecuador is still incipient and few cities collect and treat this material properly. In Cuenca, the ETAPA company collects ~1344 t/year of used oils, which are subjected to pretreatment operations prior to their use as fuel in a cement factory. However, combustion generates polluting gases and disallows the adding of value to the used oils. The lack of studies on the characterization and methods utilized for recovering used oils under the conditions found in medium-size Latin-American cities (e.g., Cuenca), alongside a lack of government policies, have hindered the adoption of re-refining operations. The objective of this work is to characterize the used lubricant oils in Cuenca, to compare them with the properties of used oils from other countries, and to suggest some re-refining technologies for oils with similar properties. Used oil samples were collected from mechanic shops and car-lubricating shops for characterization. Its physicochemical properties and metal contents are comparable to the used oils in other countries globally. Specifically, the flash point, kinematic viscosity, TBN, and concentrations of Zn, Cd, and Mg are similar to the properties of used oils in Iraq, Egypt, and the United Arab Emirates. Based on these results, the best re-refining option for used oils in Cuenca is extraction with solvents in which sedimentation and dehydration (already conducted in Cuenca) is followed by a solvent reaction process, a vacuum distillation process, a finishing process with bentonite, and a final filtration step.

show abstract

“…cylinders, segments, piston), protection against chemical corrosion of engine parts. The used motor oils are contaminated by contaminants and impurities resulted from undesirable oxidation processes: sediment, water, metallic particles and degraded additives [1]. There are several methods to remove these contaminants.…”

Section: Introductionmentioning

confidence: 99%

Experiments in use of bentonite for energy recovery of used oils

et al. 2019

View full text Add to dashboard Cite

The paper proposes the development of advanced, integrated technologies for materials with properties of adsorbents (e.g. bentonite), and the use of these material in processes of used oil recovery with remediation effect and energy recovery. The main objective is to replace diesel fuel, which is an expensive fuel, with revitalized oils for energy production. For these, laboratory experiments are required in two important directions. The first tests are related to the determination the optimum concentration of bentonite for removal of metals from used oil. The revitalization of the used oil leads to the protection of the combustion plant, to the increase of its lifetime and polluting emissions reduction. The second set of experiments relates to the determination of energy characteristics of used oil and revitalized used oil for energy production. Elemental analysis, lower heating value, viscosity, density and ash analysis were determined. Experimental test of combustion process on a small scale boiler has been done and the results shows an improved combustion process of revitalized oil compares with used oil and the decrease of the pollutant emissions.

show abstract

Some aspects of the regeneration of used motor oil

Cited by 15 publications

References 1 publication

Clarification of used lubricating oils by application of chemically-modified clays

Clarification of used lubricating oils by application of chemically-modified clays

Characterization of Used Lubricant Oil in a Latin-American Medium-Size City and Analysis of Options for Its Regeneration

Experiments in use of bentonite for energy recovery of used oils

Contact Info

Product

Resources

About