Engine Oil Research Articles

Analysis of irreversibility on nanofluid flow through porous medium considering shape, dispersion and melting effects

This study is conducted to explore the impact of thermal dispersion and melting on the natural convective nanofluid (nickel zinc ferrite + SAE 20W-40 motor oil) flow over a stretching sheet in a Darcy porous medium. An irreversibility analysis has also been performed using the second law of thermodynamics. The fundamental nonlinear partial differential equations (PDEs) are converted into a system of dimensionless nonlinear ordinary differential equations (ODEs) through Lie group similarity transformations and then solved by employing the spectral local linearization method implemented in MATLAB software. It is noteworthy to highlight that the validation results indicate a strong concurrence with existing findings in previously published literature. After simulation, it is specified that the thermal dispersion disrupts the entropy (by 63.7%) and enhances the surface friction. Likewise, the heat transfer rate improves by 1.5% with the melting effect and 58.7% with the Darcy number. The results indicate that the brick-shaped particles exhibit a higher rate of heat transfer and lower entropy production. Further, this work has many uses such as, core, microwave, and biomedical applications like tumor treatments, bone plate surgeries, EMI (electromagnetic interfaces), electronics cooling, and aerodynamic extrusion processes, in the design of passive ventilation systems.

Waste-derived thermal storage solutions for sustainable solar desalination using discarded engine oil and paraffin wax: A techno-environmental feasibility evaluation

The valorization and repurposing of waste materials for sustainable outcomes and environmental mitigation are gaining prominence. This investigation explores the feasibility of repurposing discarded automotive engine oil as a viable means of energy storage in solar thermal desalination applications. A novel approach combining discarded engine oil with Paraffin wax in equal parts by volume is proposed as a composite energy storage (CES) to enhance nocturnal production and efficiency. The experimental findings show that the composite energy storage system has 26.54 % higher thermal conductivity and 44.66 % greater specific heat energy storage capacity compared to pure paraffin wax. Comparing the Desalination System with Engine Oil-based Energy Storage (DSEES) to a Traditional Solar Desalination System (TSDS) without energy storage, considering water and absorber temperatures and distillate production, reveals compelling advantages. DSEES exhibits remarkable temperature increases of 14 % in the basin and 11 % in water, alongside a significant 52.72 % rise in distillate production rates, yielding 3.36 and 3.16 l/sq.mt compared to TSDS's 2.2 and 2.1 l/sq.mt over two testing days. Cost analysis indicates DSEES's 33.7 % lower cost per liter and 33.8 % shorter payback period relative to TSDS. Furthermore, environmental assessment highlights DSEES's 60.8 % greater net carbon credit, indicating reduced ecological impact.

Preparation and modification mechanism study of microwave-treated crumb rubber and waste engine oil-modified asphalt.

The objective of this study was to characterize the performance of waste engine oil (WEO) and microwave-treated crumb rubber (CR)-modified asphalt (WEO-MCRA) and analyze the modification mechanism. The viscosity and dynamic shear rheological (DSR) tests were carried out to evaluate the viscoelasticity property of WEO-MCRA. The storage stability and fluorescence microscope (FM) tests were used to characterize the compatibility of the components. The Fourier transform infrared spectroscopy (FTIR) and molecular dynamic simulation were introduced to analyze the change of function groups and modification mechanism. The results demonstrated that introducing Wt.20% CR treated with microwave and Wt.6% WEO obtained a lower viscosity, excellent storage stability, and satisfactory elasticity properties of asphalt. The morphology of modifiers presented a thread-like structure microscopic with the range of WEO content Wt.3%-Wt.6%. Molecular dynamic simulations revealed that the aromatic may be intensively absorbed by CR and increase the likelihood of phase separation. WEO reduced the binding energy of CR to aromatic from 178.0 to 151.5kcal/mol, which will contribute to the disaggregation of CR clusters. The diffusion coefficient shows a more obvious decrease with the addition of WEO and microwave treatment, which will benefit the stability of the asphalt. This study can provide a reference for the recycling of CR and WEO.

Analysis of Newtonian heating in fractional hybrid nanofluid with the influence of transverse magnetic field

This article deals with the effects of Newtonian heating in second grade Hybrid nanofluid. For memory effects the problem is modeled with the help of generalized Fourier law along with generalized boundary conditions. A hybrid nanofluid model is used with nano particles of the form Magnetic Iron Oxide (Fe3O4) and Silver (Ag) nano particles with engine oil (EO) as based fluid. A uniform magnetic field perpendicular to the plate is also taken. General solutions of the problems are obtained with the help of Laplace Transform Technique. Influence of related physical parameters on the fluid flow are discussed with the help of graphical display of the solutions. It is also observed that generalized boundary conditions provides more effective and new solutions for the oscillating flow of hybrid nanofluid which produces a better way of understanding of hybrid nanofluid.

Joule-heating electrospun reduced-graphene oxide nanoribbon-coated reusable polymeric sorbent with an excellent sorption/desorption of high-viscosity oils

Reusable oil sorbents for oil/water separation have been extensively researched due to their environmentally friendly applications. While reusing sorbents that have removed low-viscosity oils was relatively straightforward, the challenge arose with high-viscosity oils. Consequently, this study fabricated a Joule-heated reduced-graphene oxide nanoribbon-coated polyvinylidene fluoride (r-GONR-coated PVDF) oil sorbent to enhance the sorption/desorption (reusability) performance of highly viscous oils. Joule heating was employed as a novel oil desorption technique to decrease the viscosities of oils and enhance oil desorption performance from the sorbent. The r-GONR-coated PVDF oil sorbents significantly increased surface temperatures through Joule heating, reaching up to 160 °C at a low voltage (20 V). Owing to comparable porosity and water contact angle, the oil sorption capacity was similar between PVDF and r-GONR-coated PVDF oil sorbents (19 g/g for motor oils and 12 g/g for diesel oil). However, the highest oil desorption efficiencies with highly viscous oils were achieved with the r-GONR5 oil sorbent (∼50 % within 5 min) using Joule-heating, compared to the PVDF oil sorbent (≤10 %). Furthermore, this sorbent demonstrated reusability for up to the 5th sorption/desorption cycle, with a recovery efficiency of approximately 50 %. In comparison to the PVDF oil sorbent, therefore, the Joule-heated oil sorbent is expected to reduce the cost of spilled oil clean-up by approximately 3.24 times. This study introduces a novel material with high reusability and a new method for the desorption of oil sorbents in practical applications. Specifically, it provides a cost-effective and sustainable clean-up method for spilled oils with high viscosity.

Determination of Process Parameters For Removing Impurities from Motor Oils for Their Use as The Basis of Working and Preservation Fluids

Motor oil that has spent a certain period of time in combined engines has a reserve of operational properties and can be considered as a basis for the preparation of working and conservation oil when storing equipment for a long period of storage [1].

New lubricant compositions of M-14b2 motor oil

New lubricant compositions of M-14B2 motor oil were created with the compound of M-8 and M-15 distillate oils obtained from Azerbaijan oil refining and various functional additives. Due to the low viscosity index of the mentioned base oils, viscosity additives of polymethacrylate type Viscoplex series the Viscoplex 2-670 additive were used. The durability of these additives against mechanical and thermal destruction was determined and the obtained results confirmed that their use in lubricant compositions is purposeful. The physico-chemical and operational properties of the lubricant compositions were determined in the ИКМ-40 (assessment of antioxidant properties), НАМИ-1М (assessment of the tendency of oils to form low-temperature deposits), Д-240 (evaluation of detergent properties) and ИМ-1 (evaluation of detergent properties) units and it was determined that the newly (created lubricant compositions of the M-14B2 motor oil meet all the requirements set by QOST 12337-84.

Exploring the potential of graphene nanoplatelets as a lubricant additive: Topography evolution and performance under boundary lubrication conditions

This work investigates the friction and wear reduction effects of adding functionalized graphene nanoplatelets (GNPs) to a fully formulated engine oil. Friction tests using a continuous sliding/rolling ball-on-disk tribometer showed that 0.2 wt% GNP oil reduced friction by up to 28% and 11% in the boundary and elastohydrodynamic lubrication regimes, respectively. The disk tested with GNP oil also exhibited lower wear and evidence of carbon tribofilm formation. Raman spectroscopy indicated that the mechanical stresses in the tribological tests altered the graphene morphology. Furthermore, the study evaluated the literature mechanisms for graphene-induced friction and wear reduction, and concluded that the interplay between interlaminar shearing and protective film formation mechanisms was the most plausible explanation for the obtained results.

Exploring the potential of novel Bacillus sp. G6: Isolation, characterization, and optimization of biosurfactant production from oil-contaminated soil

Biosurfactants (BSs) are highly biodegradable, environmentally benign, and multifunctional substances having diverse industrial uses, including environment bioremediation. Because of its remarkable emulsifying properties, as well as its use in both the environment and medicine, surfactin, is considered one of the most potent BSs and belongs to the lipopeptides family. The present study was performed to isolate the potential bacteria from oil-contaminated soils. Selected bacteria were checked for biosurfactant (BS) synthesis and their characterization. Out of 32 bacteria, the most promising isolate G6 was taken for a detailed study. Based on polyphasic taxonomy it was found to belong to the novelBacillussp.Nutrient screening for higher BS synthesis usingthe Plackett-Burman design(PBD) showed thatFeSO4, NaCl andwaste engineoil have a significant influence on BS production. Further optimization utilizingBox-Behnken design(BBD) revealed that the optimized condition for higher BS synthesis wasFeSO4(2.0 %), NaCl (2.0 %), and waste engine oil (2.2 %). The highest BS yield of 3.79 ± 0.265 g/L was attained with a cell biomass of 1.51 ± 0.234 g/L with 1.92 fold increase in the yield. Based on thin-layer chromatogram (TLC),Fourier transform infrared spectroscopy(FTIR), andGas Chromatogram-Mass Spectrometry(GC–MS) studies it was observed that the probable BS was a surfactin-like molecule that is stable at a wide range of temperature (up to 100° C), pH (5–9), and salinity (3–6 %).

Evaluation of the potentials of <i>Pennisetium glaucum</i> and <i>Vigna unguiculata</i> for phytoremediation of Spent-engine oil contaminated soil

One promising technique for cleaning up soil polluted by spent engine oil is phytoremediation. Particularly in the tropics, where resources can be scarce and the climate is favorable for plant development. Finding plant species that will work well with this technology was the aim of this investigation. The ability of a cereal (Pennisetum glaucum) and a legume (Vigna unguiculata) to remediate soil contaminated with 1%, 2%, 3%, 4%, and 5% (W/V) of spent engine oil was evaluated. After 150 days of incubation, the Total Petroleum Hydrocarbon (TPH) loss in greenhouse studies was calculated. The total petroleum hydrocarbon content of soil that was vegetated with P. glaucum and V. unguiculata was substantially lower than that of non-vegetated soil. Furthermore, a positive association was discovered between the initial TPH and the total petroleum hydrocarbon loss caused by planting P. glaucum. It was also discovered that P. glaucum outperformed V. unguiculata in remediation capacity. These findings suggest that P. glaucum be investigated further, which might lead to a better understanding of how to apply phytoremediation to soils contaminated with spent-engine oil.

Friction and Wear of the Piston Ring – Cylinder Liner System with Artificially Aged Ultra-low Viscosity Engine Oils

This study aims to investigate the performance of artificially aged prototype engine oils through friction and wear experiments. Experiments were performed on a piston ring – cylinder liner model system with boundary conditions derived from real-life operating conditions. The experimental design implemented two prototype oils (SAE 0W-12 and 0W-16) in unaltered and artificially aged form. An additional fully formulated off-the-shelf engine oil (SAE 0W-20) was also aged and analyzed as reference. Oil samples were artificially aged in a custom rig, to simulate long-term in-engine use through thermal cycling at 180 °C. Fourier Transformed Infrared Spectroscopy of the lubricant samples highlighted a depletion of zinc dialkyl-ditiophosphate antiwear additives in all cases, which is comparable to a selected in-service oil. Oxidation was also measurable, albeit lower compared to the in-service sample. Averaged friction coefficients showed a ranking of aged 0W-12 < aged 0W-16 < unaltered 0W-12 < unaltered 0W-16. A decrease in surface roughness was experienced with aged oil samples, whereas unaltered 0W-16 oil produced an unexpected transition in the wear phenomenon and resulted in severe wear.

Incorporation of zwitterionic carbon quantum dots in cellulose acetate tubular membrane for oil/water separation

The substantial generation of oily industrial wastewater poses a considerable environmental threat. A promising strategy for addressing this challenge involves employing ultrafiltration membranes integrated with a hydrophilic nanomaterial. This study aims to investigate the properties of zwitterionic carbon quantum dots (ZQDs) and enhance the performance of cellulose acetate (CA) tubular membranes by incorporating ZQDs. The CA tubular membrane was crafted using the dry-wet spinning method. The introduction of ZQDs into the CA casting solution disrupted its thermodynamic stability and expedited the non-solvent inflow rate during membrane formation, thereby augmenting both membrane porosity and pore size. The inclusion of ZQDs heightened the membrane's hydrophilicity owing to the presence of hydrophilic functional groups in the nanomaterial. The modified tubular membrane demonstrated high pure water and diesel oil-water emulsion permeate flux of 581.3 ± 33.9 L m−1 h−1 bar−1 and 350.5 ± 11.2 L m−1 h−1 bar−1, respectively, with an impressive oil rejection rate of 98 %. The flux recovery and reversible fouling ratio increased to 88.42 % and 28.12 %, respectively, while the irreversible fouling ratio decreased to 11.57 %. The modified tubular membrane effectively rejected various oil-water emulsions (diesel oil, dodecane, canola oil, and engine oil) with a separation efficiency ranging from 94 % to 99 %. In conclusion, the zwitterionic-modified tubular membrane proved to be effective in the separation of oil and water.

Pashukevich Motor oil performance analysis due to water and coolant contamination

Introduction. During the operation of heavy-duty diesel equipment in areas with a low-temperature climate, engine oils are contaminated by coolant and water. The ingress of these substances into the lubricant leads to a deterioration in its quality indicators, which subsequently leads to problems in the nodes of the internal combustion engine.Relevance. The deterioration of the values of engine oil quality indicators is directly related to the presence of water and coolant in it. It is not always possible to objectively track the ways of leakage of these pollutants, and this, in turn, leads to serious consequences in the form of wear of the contacting surfaces of engine parts, corrosion. It is also important to evaluate the resource of lubricant additive packages due to its dilution with water and antifreeze.Materials and methods. This paper presents the results of a literature review aimed at studying the ways of coolant and water ingress during the operation of diesel engines, their influence on the physical and chemical properties of motor oils. The brief information about the composition of the coolant is indicated.Conclusions. The ingress of water and coolant into the engine oil leads to an increase in the kinematic viscosity of the lubricant, as well as to the formation of deposits on the surfaces of the engine friction pairs. In addition, spherical compounds appear in the crankcase of the engine, which are a combination of destroyed additive packages and glycol. Oil change intervals must be monitored at an increased rate of water and coolant entering the engine oil.Scope of the study / possibility. This type of study will help to determine the causes of penetration of water and coolant into the crankcase space, to understand the consequences of using engine oil contaminated with water and coolant.Originality / value. The conducted research can be the basis for the development of recommendations for improving the maintenance of internal combustion engines for enterprises that have at their disposal cars with diesel engines in order to increase the resource of power units and reduce operating costs.

Forced convection analysis of Williamson-based magnetized hybrid nanofluid flow through a porous medium: Nonsimilar modeling

The purpose of this work is to analyze the convective horizontal flow of Williamson-based magnetized hybrid nanofluid. The flow of Williamson fluid with heat transfer is stimulated in a porous media over a stretching surface. Two different type of nanoparticles such as, molybdenum disulfide ( Mo S 2 ) and copper (Cu) with engine oil (Eo) as base fluid are considered in this work. The convective flow of Williamson fluid is inspected based on Khanefer model. The governing system is transformed into nondimensionalized partial differential equations (PDE’s) by utilizing nonsimilar transformation. The transformed system is analytically approximated using local nonsimilarity (LNS) and perturbation approach which approximate the nondimensional PDE’s by nondimensional ordinary differential equations (ODEs). The LNS and perturbation ODEs are simulated utilizing finite difference-based algorithm bvp4c. The outcomes of simulation for heat transfer and convective flow over stretching surface incorporating the evolvement with local Nusselt number (Nu) for distinct values of prandtl number are compared with previous published numerical results. The appropriate range of governing nondimensionalized parameters is evaluated to detect the variance of physical quantities namely, velocity ( f ′ ( η ) ) of the fluid, temperature ( θ ′ ( η ) ) of the fluid, co-efficient of local Nusselt number (Nu) and co-efficient of local skin friction (Cf). The percentage difference between single nano-fluid and hybrid nano-fluids is made which are given in tabular form. To the best of author knowledge, nonosimilar study of hybrid-based magnetized Williamson nanofluid is not yet investigated. This work is anticipated to offer crucial information for the implementation of innovative heat transfer devices in the future and serve as an invaluable resource for researchers looking at the flow of nanofluids under various assumptions.

Fluorine-free surface coating to prepare hydrophobic and magnetic sawdust particles for oil spill absorption

In the present work, magnetic sawdust was prepared via simple dip coating treatment of sawdust particles with iron oxide. Furthermore, the prepared magnetic sawdust particles were treated with calcium stearate solution in mixture of cyclohexanol and toluene (ratio of 1:9, w/w) to prepare magnetic hydrophobic sawdust (MHSD) particles. Electron microscopy, energy dispersive spectrum, Fourier transform infrared spectroscopy and goniometry were employed to examine the surface morphology, chemical nature and wetting behavior (contact angle with water and oil as fluid) of the modified surface. The resulting MHSD particles exhibited hydrophobic (WCA ~ 136.5 ± 1°)/oleophilic (0°) properties and magnetically separation ability from oil/water mixtures. Furthermore, oil spill absorption efficacy of MHSD particles were examined with various oil/water mixtures. The maximum oil-absorption capacity of MHSD particles was observed for engine oil (2.216 g g1). The non-fluorinated calcium stearate based hydrophobic coatings is an efficient approach for oil spill absorption on water surface.

МОРФОЛОГИЧЕСКИЕ И ТРИБОЛОГИЧЕСКИЕ СВОЙСТВА МЕХАНОАКТИВИРОВАННОГО MOS2, ИСПОЛЬЗУЕМОГО В КАЧЕСТВЕ ПРИСАДКИ ДЛЯ МОТОРНОГО МАСЛА

The issues of improving the operational parameters of internal combustion engines are given a lot of attention, and in this regard, the direction related to improving the quality of engine oil with the help of dispersed additives is of great importance. In the article morphological and tribological properties of mechanically activated MoS2 used as an additive for semi-synthetic engine oil are considered. The obtained materials were investigated by the method of electron (scanning) microscopy, and the distribution of MoS2 particles as an additive in motor oils was analyzed, as well as IR spectroscopy of the material before and after mechanoactivation was carried out. Comprehensive comparative studies of tribological parameters (friction machine MI-1M) (running-in time, running-in wear, friction coefficient ratio, established friction coefficient and total wear) of motor oil with and without MoS2 additive were carried out. The mass concentration of MoS2 in the engine oil (Mannol Semi-synthetic Classic 10W-40), varied from 0.03 to 0.07 with a step of 0.02 wt.%. It was found that the addition of MoS2 to the engine oil reduces wear from 5.7 to 4.1 microns, with a decrease in the steady-state coefficient of friction from 0.115 to 0.08, which follows from the decrease in the steady-state coefficient of friction from 0.115 to 0.08. The time during which the working-in process increases from 1.57 to 2 h, which also reflects the reduction of friction when using engine oil with MoS2 additive. At the same time during operation the concentration of MoS2 additive in engine oil decreases, which leads to deterioration of properties. So, reduction of concentration from 0.07 to 0.03 (change by 57%) increases wear from 7.7 to 7.90 microns, which is 2.5%, and when reducing the concentration from 0.07 to 0.05, the increase in wear is 1.2%. Thus, considering the factors related to filtration, accumulation effect and the values of the studied typological parameters, a MoS2 concentration in the range of 0.03 to 0.07 wt.% is optimal.

Izbor motornih ulja sa tribološkim ispitivanjima primenljivih na specijalno upravljane dizel motore

In recent times, many specially engineered diesel engines built in the 1980s are still used in different areas, for which the suggested engine oils are no longer available. These engines are operated reliably in military combat vehicles, electricity generators, and tracked machinery, thus it is essential to examine what engine oils are suitable for their operating conditions and may be used as their engine oil. The aim of our research is to conduct the tribological examination of an oil sample taken from a V-6M type naturally aspirated Diesel engine and the oil prescribed by the manufacturer. After evaluating the results, we determine which type of oil is applicable in the engine to achieve safe operation and a long lifetime.

Thermal Properties of Engine Oils through the Integration of Graphene Nanoparticles: A Greener Approach for Sustainable Mechanical Systems

Tribology is a high demand mechanical system with friction and wear. Mechanical systems lose efficiency as a result. One answer for this issue is to utilize an oil that can limit contact and wear, bringing about improved effectiveness. The advancement of effective lubricating added substances for tribological properties improvement and improved thermal conductivity has gotten huge modern and scholarly consideration. By and large, nano-sized particles scattered in lubricants, referred to as nano-based lubricant, are utilized in mechanical structures to lessen heat and forces of frictions. Moreover, new guidelines will empower the utilization of greener lubrication advancements in oils. To resolve this issue, lubricants should satisfy guidelines while able to give exceptional oil characteristics. As another green material, this research will investigate the dissolving of Graphene nanoparticles in lubricants. The objective of this study is to perceive what Graphene added 10W40 motor oil means for the thermal properties and tribological characteristics. Graphene, which was added to 10W40 lubricant, was used to study the best design. Graphene nanoparticles were distributed in baseline engine oil in a two-step process. In the preparation of Graphene-based motor oil with a low volume mixture in the scope of 0.01% to 0.07% was used. Thermal conductivity and viscosity are estimated for all volume mixtures. Testing uncovered that Graphene added 10W40 motor oil were steady all through the review, with very little deposits in the following 30 days. The thermal conductivity of Graphene in SAE 40 motor oil expanded as the volume mixture is added.

Ready-to-use graphene-related material-added multi-grade oils: characterization and performance in car engine working conditions.

The need for energy efficiency is leading to the growing use of additives to enhance the performance of oil in automotive engines. Great interest is focused on nano-additives even if to date there is still no practical use in commercial liquid lubricants. Herein, the potential of industrially scalable and low-cost graphene-related materials (GRMs) as additives to enhance the performance of oil in automotive engines is explored. The use of polyalkylmethacrylate dispersants, the most common key additives to formulate "green technology" lubricant oils liquid-processed GRM, is explored, investigating the role of the lateral size and the chemical analysis in the stability of the lubricant GRM dispersions. Showing the maximum duration of stability and a production method that avoids the use of strong oxidants, rheological tests were then focused on multilayered graphene flakes with sub-micrometre lateral size mixed in two commercial oil grades (5W-30 and 5W-40) under conditions similar to those of engine operation. The addition of such a filler increases the viscosity without affecting the Newtonian fluid behavior, while four-ball tests show a reduction in wear, indicating improved lubrication performance. Finally, preliminary bench-test on a commercial car engine showed increased power output corresponding to enhanced engine efficiency. The results clearly indicate the effective improvement in lubricating commercial oils due to GRM additives.

Oil absorption and plant symbiosis capacity of hydrophobic modified concrete: Preparation and performance analysis

Oil pollution jeopardizing the ecological environment made topical the introduction of “ecological” concrete with high oil pollution adsorption performance. By designing the pore structure of concrete with cementitious materials, modifying it with hydrophobic materials, and combining it with absorptive plant growth experiments, the modified concrete had the function of absorbing oil pollution. This study aimed to prepare a modified oil-absorbent concrete (MOAC) by designing cementitious materials, sand rate, water-cement ratio and combining the modification of hydrophobic materials. This paper focused on the compressive strength, oil absorption performance, and plant symbiosis with centipede grass. Using scanning electron microscopy (SEM), mercury intrusion porosimetry (MIP), and Fourier transform infrared (FT-IR) spectroscopy to analyze the oil absorption mechanism, the impact of hydrophobic materials on oil absorption performance were discussed. The symbiosis between MOAC and plants was explored through vegetation experiments. The crude fat content in the adsorbed plant centipede grass was tested by the Soxhlet extraction method. The results show that the optimal compressive strength of oil-absorbing concrete can reach more than 20 MPa, and the volumetric oil absorption capacity can reach 230.7 kg/m3. The hydrophobic material isooctyltrie thoxysilane can be grafted onto the concrete surface and significantly improve oil absorption performance. After 90 days of plant growth, the survival rate of plants in the MOAC was over 82.01% in the environment where the oil pollution was engine oil and soybean oil. Centipede grass can absorb and degrade oil pollution, and its oil absorption capacity reached 3.81%. Through the degradation of centipede grass and the adsorption of oil stains in the concrete, the integrated design and sustainable development of concrete oil stain adsorption can be achieved.