article · Egyptian Journal of Petroleum
Fossil fuel depletion and environmental regulations drive the search for biogenic lubricant alternatives. Lubricants based on Phyllanthus Emblica seed oil were assessed for their friction and wear behaviour using a pin on disc tester and response surface methodology. Testing evaluated specific wear rate and coefficient of friction across blend ratios ranging from 0 to 20 percent, loads from 50 to 100 N, and sliding speeds from 1.3 to 3.8 metres per second. Experimental results indicated the occurrence of adhesive wear. Among the tested variants, a formulation termed AB10 demonstrated superior wear and friction characteristics under low load and high sliding velocity conditions, functioning effectively as a bio-lubricant additive. Additionally, analytical ferrography and total acid number testing of the used oil examined the generation of wear debris and oil degradation.
Depleting fossil fuel reserves and stricter environmental regulations necessitate sustainable, plant-derived alternatives to petroleum lubricants. Investigating seed oils such as Phyllanthus Emblica demonstrates how bio-based formulations can successfully reduce friction and wear in mechanical systems, supporting the transition towards cleaner and renewable industrial fluids.
The findings suggest potential applications for Phyllanthus Emblica seed oil as a bio-based lubricant additive for machinery operating under low load and high speed. Likely users include lubricant blenders and industrial fluid manufacturers looking for renewable additives. The work remains at an early laboratory stage, having been tested solely on a benchtop pin on disc apparatus, meaning substantial formulation development and practical machinery trials are needed before commercial use.
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The escalating prices, rapid diminution of fossil fuels, tenacious regulations of the authorities, etc. enforced towards the alternate biogenic fuel for lubrication. The present study assessed the lubricity characteristics of Phyllanthus Emblica seed oil based lubricants by using a pin on disc (POD) tester. The design of experimentations has been carried out using response surface methodology (RSM). The value of parameters such as blend ratio, load and sliding speed ranges from 0 to 20%, 50 to 100 N and 1.3 to 3.8 m/s, respectively, are used to assess the value of specific wear rate (SWR) and coefficient of friction (COF). Test results illustrate that the adhesive wear occurred during the experiments. It has been observed that AB10 shows the probable results in terms of wear and friction characteristics as compared to other lubricant variants at low load and high sliding velocity conditions and perform as an excellent lubricant additive. This contributes towards the replacement of petroleum based lubricants. Analytical ferrography and total acid number (TAN) analysis of the used oil was also done to study the wear debris in the oil.
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DOI: 10.1016/j.ejpe.2018.04.001
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