Evaluation of physico-chemical properties of re-refined lubricating oils obtained from fabricated packed bed reactor
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Date
2017
Journal Title
Journal ISSN
Volume Title
Publisher
Taylor and Francis
Abstract
This study aimed at fabricating a packed bed reactor (PBR) and evaluating
its performance on improving physico-chemical properties of used lubricating oils. The sorbent used was a composite of bentonite, limestone, diatomite, quartz, and wood charcoal in the same ratio by mass. Samples of used lubricating oils from two brands (Mobil Super SAE 20W-50 and Total Quartz 5000 SAE
20W-50) were run through the fabricated PBR. The mean values of the analyzed
physico-chemical parameters (kinematic viscosity, viscosity index, flash point,
pour point, acid number, base number, iodine value, ash content, density, and
refractive index) of the exuded (treated) oils were compared with those of used
and virgin oils of the same brand. Apart from the iodine value, the mean values obtained for the treated oil samples are close to those of virgin oil samples. Thet-test results indicated that most of the parameters showed significant difference between their mean values in the used oils indicating distinct
properties and hence, good treatment effects, while a good number showed
no significant difference between their mean values in the treated Mobil and
treated Total oils, indicating similar properties and that the treatment had similar effects on the two brands of oils. Also, various results of cross plots hadR
2
values greater than 0.96, indicating high linear relationships of the impact of
the treatment on the various oil samples. The overall results established the
high effectiveness of the fabricated PBR for the treatment of used lubricating
oils
Description
Keywords
automobile engine, lubricating oil, PBR, physico-chemical parameter, sorbent