A Comprehensive Study on Effect of Biofuel Blending Obtained from Hydrothermal Liquefaction of Olive Mill Waste Water in Internal Combustion Engine

Abstract

The production of biofuel from olive mill wastewater (OMWW) may be one of the promising techniques for use in diesel engines. In this study, biofuel was produced from the hydrothermal liquefaction of OMWW using a methanol-water co-solvent. Biofuel blends of 10% (B10), 20% (B20) and 30% (B30) by volume of biofuel, were prepared. The chemical and physical properties of biofuel blends are mostly similar to those of conventional diesel fuel. The engine speed was kept constant (1500 rpm) throughout the tests under different engine loads (25, 50, 75 and 100%). The effects of biofuel-diesel blends on exhaust emissions and engine performance were investigated. The results show that the in-cylinder pressure follows almost the same trend for all fuels. However, at high loads, with increasing biofuel blend, the combustion duration tends to become longer. The B10 blend provided close results to diesel fuel in terms of performance and polluting emissions. Moreover, the use of B10 resulted in reduced emission levels, with 11% of unburned hydrocarbons, 12% of particles and 26% of carbon dioxide compared to the other blends.

Production of green hydrogen from sewage sludge / algae in agriculture diesel engine: Performance Evaluation

“…At the same time, the BSFC on diesel fuel and its different blends was noted as 402, 361, 322, 385, 341, and 302g/kWh at 1600 rpm, which was higher than the BSFC of the DH20T blend. The BSFC varied due to load, speed, and blending ratio, as reported by Aklouche et al [ 25 ]. However, the DH20T blend was facilitated 420g/kWh on BSFC at a higher speed (2600 rpm) and was saved by 23.8 % compared to diesel fuel.…”

“…The higher in-cylinder pressure was due to the combinations of H 2 and TiO 2, which offered a clean and effective fuel mixture and increased pressure under the combustion stage. The in-cylinder was varied based on the blending ratio of diesel and biofuel [ 25 ]. Similarly, the in-cylinder pressure of other blends like D, H10, H20, DT and DH10T fuel was about 47.9, 48.5, 49, 49.7, and 50.4 bar, respectively.…”

“…Likewise, biofuel blend with diesel fuel with volume ratios of 10, 20, and 30& and their performance was measured by various loading conditions. The 10 vol% fuel blend results in better engine performance, and its emissions were reduced by 11 % on unburned carbon, 26 % on carbon dioxide, and 12 % on particles compared to others [ 25 ]. However, the green hydrogen gathered from bio-renewable sources is promising for future energy applications [ 26 ].…”

Influence of γ-Fe2O3 Nanoparticles Added to Gasoline–Bio-Oil Blends Derived from Plastic Waste on Combustion and Emissions Generated in a Gasoline Engine

“…The results show that NOx emissions were significantly reduced after adding γ-Fe 2 O 3 NPs in gasoline-bio-oil blends (Figure 6b). This result may be due to the catalytic effect of γ-Fe 2 O 3 NPs improving heat transfer in the combustion chamber [41]. Furthermore, this nanomaterial has the potential to enhance the oxidation stability of gasoline, resulting in a more substantial reduction in NOx emissions.…”

Computational Analysis on Combustion Control of Diesel Engines Fueled with Ester Alcohol Diesel

“…It can be employed in modern direct-injection diesel engines [24] with minimal alterations [25], thereby positioning it as a practical [26], immediate solution [27]. Numerous studies validate that bio-diesel can curtail emissions of CO 2 [28], hydrocarbons [29], and soot by up to 50% [30], highlighting its potential in reducing [31] the environmental impact of diesel engines [32]. However, the increase of approximately 10% in NO x emissions [33] when using bio-diesel remains an issue that warrants resolution [34].…”