Influence of Fuel Oxygenation on Regulated Pollutants and Unregulated Aromatic Compounds with Biodiesel and n-Pentanol Blends

International Journal of Energy Research, Journal Year: 2023, Volume and Issue: 2023, P. 1 - 11

Published: April 17, 2023

It is very important to determine the polycyclic aromatic hydrocarbon (PAH) emissions caused by use of renewable fuels in diesel engines and know possible damages. This study investigates (regulated unregulated) biodiesel/n-pentanol mixtures, which are free content, with emphasis on PAH formation an examination toxicity public health environment. Engine failures wetstacking also discussed. Biodiesel/n-pentanol fuel mixtures alcohol concentrations 5%, 20%, 35% volume (v/v) served as test a compression ignition engine. A five-gas analyzer was used measure (HC), carbon monoxide (CO), nitrogen oxide (NOx) emissions. Polycyclic hydrocarbons were detected measured using gas chromatography-mass spectrometry (GC-MS). Against baseline fuel, blends neat biodiesel reduced NOx produced significantly fewer PAHs toxicity, confirming significance content fuel. Biodiesel total 48.02% addition 5% n-pentanol further decreased 21.26%. The (BaPeq (benzo[a]pyrene equivalent)) result 83.49% less than diesel. 59.15%, 57.89%, 48.33% for BPen5, BPen20, BPen35 blends, respectively. In addition, shown be effective reducing emissions, well heavier PAHs, have greater carcinogenicity pose likelihood engine damage from when running low-load conditions at cold temperatures.

Language: Английский

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Support vector regression approach to optimize the biodiesel composition for improved engine performance and lower exhaust emissions

Fuel, Journal Year: 2023, Volume and Issue: 348, P. 128604 - 128604

Published: May 9, 2023

Language: Английский

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Reliability of renewable oxygenated fuels in engines: A comprehensive review of long-term testing

Fuel, Journal Year: 2024, Volume and Issue: 367, P. 131451 - 131451

Published: March 20, 2024

Language: Английский

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Emission characteristic, spatial distribution, and health risk of polycyclic aromatic compounds (PAHs, NPAHs, and OPAHs) from light-duty gasoline and diesel vehicles based on on-road measurements

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 941, P. 173390 - 173390

Published: May 28, 2024

Language: Английский

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Experimental investigation and parametric modeling of the effect of alcohol addition on the performance and emissions characteristics of a diesel engine fueled with biodiesel-diesel-hydrogen fuel mixtures

Fuel, Journal Year: 2024, Volume and Issue: 381, P. 133489 - 133489

Published: Oct. 30, 2024

Language: Английский

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Formation of Polycyclic Aromatic Hydrocarbons (PAHs) in Thermal Systems: A Comprehensive Mechanistic Review

Energy & Fuels, Journal Year: 2024, Volume and Issue: 38(22), P. 21735 - 21792

Published: Nov. 1, 2024

Polycyclic aromatic hydrocarbons (PAHs) are formed invariably through oxidative and pyrolytic degradation of organic materials fuels. Understanding the highly complex reaction mechanisms that dictate their synthesis in thermal systems has been given a great deal focus. Such interest stems from two broad perspectives, namely, enhancing efficiency combustion system, energy recovery fuels protecting environment. Health environmental effects widely vary among PAHs where certain compounds exhibit carcinogenic tendencies. This critical review mainly aims to provide general mechanistic view commonly discussed formation pathways PAHs. The attained knowledge often incorporates experimental measurements kinetic modelings, as well mapped out by quantum chemical calculations. A sampling species is typically conducted via molecular beam (MB)–mass spectroscopy (MS) technique connected reactor (flow reactor, jet-stirred or shock tube). Generally, PAH precursors encompass four categories (radicals molecules): acetylenic compounds, alkyl radicals, phenyl resonance-stabilized cyclic radicals. Overall, relevance mechanism depends on consistency between proposed model pathways, profiles products at investigated conditions (i.e., temperatures, pressures, distance burners). effect seeding common precursors, with other explored surveying pertinent studies. Growth higher PAHs, including toxic pyrene, most likely involves hydrogen abstraction acetylene addition (HACA)-like starting anthracene bimolecular reactions involve benzyl radicals indene molecules. synergistic collaboration different suggested account for observed fast growth rate As experimentally shown, sequential mass 15 u, 24 26 74 indicate routes MAC, HACA, HAVA*, PAC routes, respectively. Whether physical process initial step conversion into soot (the inception step) still debated literature. Recent evidence underscores commence creating dimers clustering under real flame 400–1200 K). Formation synthetic natural polymers ensues condensation fragments structural arrangements polymeric entities, prior fragmentation. surveyed presented this will be useful readers who aim comprehend chemistry underlying systems.

Language: Английский

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Experimental investigation of benzyl alcohol premixing effect on 5E concepts of compression ignition engine powered with lemongrass oil – diesel blend using response surface methodology

Biofuels, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 18

Published: Jan. 15, 2025

The corrected abstract is as follows.This article aims to study the benzyl alcohol premixing effect on 5E concept of compression ignition engines powered with a lemongrass oil-diesel blend. central composite approach used create experimental matrix for load (50–100%) and ratio (0–20%). experiment uses computerized ignition, water-cooled, single-cylinder, naturally aspirated, four-stroke engine. statistical model tested using analysis variance confirmed at 95% confidence level. Quadratic linear models are created, regression equations provide surface plots analyse load–premixing interaction output response. Premixing 20% maximum loads confirms 31.09%, 14.95%, 39.91%, 17.26%, 11.06%, 7.59%, 36.61%, 4.34% higher enviroeconomic loss, thermal efficiency, brake-specific carbon dioxide, nitrogen monoxide, cooling water exergy, sustainability index, volumetric exhaust gas temperature. It also has lower exergoeconomic thermoeconomic energy consumption, smoke opacity, hydrocarbon fuel destructed entropy generation by 23.64%, 30.4%, 17.50%, 13.6%, 81.30%, 18.1%, 27.77%, respectively. necessary control monoxide recirculation or selective catalytic reduction technology in future work.

Language: Английский

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Evaluation of amyl alcohol premixing effect on compression ignition engine characteristics powered with camphor oil-diesel blend using response surface methodology

Fuel, Journal Year: 2025, Volume and Issue: 388, P. 134436 - 134436

Published: Jan. 24, 2025

Language: Английский

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An experimental investigation in a CI engine for the performance, emission and combustion characteristics of liquid fuel produced through catalytic co-pyrolysis

Fuel, Journal Year: 2024, Volume and Issue: 363, P. 130909 - 130909

Published: Jan. 21, 2024

Language: Английский

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Combustion chemical reaction mechanism and kinetic analysis of RP-3 aviation kerosene/low carbon alcohol blends

Journal of Cleaner Production, Journal Year: 2024, Volume and Issue: 469, P. 143202 - 143202

Published: Sept. 1, 2024

Language: Английский

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