Co-pyrolysis behavior, engine performance characteristics, and thermodynamics of liquid fuels from mahua seeds and waste thermocol: A comprehensive study

Pradhan, Debalaxmi; Volli, Vikranth; Singh, Rajat; Murgun, S

doi:10.1016/j.cej.2020.124749

Cited by 30 publications

(12 citation statements)

References 48 publications

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“…Values of Δ H decreased to 5.92 from 113.92 kJ·mol −1 , which meant that the absorption of heat in the process of reaction gradually reduced. This trend was consistent with the trend in activation energy, because the lower activation energy made it easier for the reaction to proceed, and less energy was absorbed from the outside world 27 . The values of Δ G were positive.…”

Section: Resultssupporting

confidence: 81%

Experimental study on kinetic characteristics of oil sludge gasification

Chu

Gong²,

Wang

et al. 2021

Asia-Pacific J Chem Eng

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Oil sludge (OS) is a typical dangerous waste in petroleum industry, which also contains abundant energy. The purpose of this study was to recover resources from OS gasification. To figure out the gasification process, a thermal analyzer was used to carry out OS gasification experiments under steam/nitrogen atmosphere with different heating rates. Results showed that the OS gasification reaction could be divided into five stages: free water volatilization, the escape of light components, the cracking of heavy components and steam reforming, the charring process and water gas shift (WGS) reactions, and inorganic mineral decomposition. The activation energy (E), pre‐exponential factor (A), enthalpy change (ΔH), Gibbs free energy change (ΔG), and entropy change (ΔS) of three main reaction stages (Stages 2–4) were analyzed through kinetic and thermodynamic analysis. From Stage 2 to Stage 4, E, ΔH, and ΔS decreased from 118.80 kJ·mol−1, 113.92 kJ·mol−1, and −4.09 J·(K mol)−1 to 13.19 kJ·mol−1, 5.92 kJ·mol−1, and −234.06 J·(K mol)−1, respectively. Nevertheless, ΔG increased from 116.01 to 210.04 kJ·mol−1. From these parameters, it could be found that the decrease of E was beneficial to the reaction. However, the values of ΔG were always positive and the reaction could not happen spontaneously.

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Section: Resultssupporting

confidence: 81%

Experimental study on kinetic characteristics of oil sludge gasification

Chu

Gong²,

Wang

et al. 2021

Asia-Pacific J Chem Eng

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“…e increase in CO was less for B5 and B10; however, these values are for B15 and B20. is is due to the inefficient combustion, low volatility, and poor fuel-air mixture caused by higher viscosity [41] and may be endorsed to the presence of various chemical elements in the co-pyrolysis oil [29].…”

Section: Emission Characteristicsmentioning

confidence: 99%

“…When compared to neat diesel oil, the authors found that 5% blend has improved performance and emissions characteristics. Pradhan et al [29] studied engine performance analysis of diesel blended with pyrolysis oil obtained from the mixture of mahua seeds and waste thermocol, and they reported some decrement in BTE and NOx with increased blend.…”

Section: Introductionmentioning

confidence: 99%

Performance and Emission Characteristics of Pyrolysis Oil Obtained from Neem de Oiled Cake and Waste Polystyrene in a Compression Ignition Engine

Raguraman

Kumar

Yadav³

et al. 2021

Advances in Materials Science and Engineering

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Plastic is a resilient, chemically inert, lightweight, and low-cost material. It sticks around in the environment for more than hundred years, threatening nature and spreading toxins. The current study deals with the use of waste polymeric materials and de oiled cake for the production of liquid oil and its blend on the performance and emission characteristics of diesel engine. The tests were conducted in an engine fuelled with diesel and four distinct blends such as 5% (B5), 10% (B10), 15% (B15), and 20% (B20), respectively. The liquid oil was produced by co-pyrolysis of neem de oiled cake (NDC) and waste polystyrene (WPS) in 1 : 2 blend ratio. The raw pyrolysis oil and its different blends were tested for their physical and chemical characteristics in order to find their suitability. Brake power (BP), brake thermal efficiency (BTE), brake-specific fuel consumption (BSFC), emissions of carbon monoxide (CO), hydrocarbon (HC), and nitrogen oxide (NOx) are used to assess the performance of the engine. The experimental results reveal that BTE at all blends is lower than diesel at all loads and the BSFC increases with increasing blend ratio and falls with increasing engine load. At higher loads, the deviation of performance and emission values from baseline diesel up to B10 is very small. It is found from the results that the liquid oil derived from NDC and WPS up to 10% blend will be the promising additive for fossil fuels.

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“…Moreover, the viscosity of the liquid product was reduced with an increase in the amount of mahua seed in the blend. (Pradhan et al 2020), wherein co-pyrolysis of mahua seed and waste thermocol was carried out using a semi-batch reactor at 1:1 ratio of mahua seed: polystyrene blend within temperature ranges of (450-600°C), manifesting an maximum bio-oil yield of about 74.2 % at 525°C.…”

Section: Introductionmentioning

confidence: 99%

Production and characterization of the maximum liquid product obtained from co-pyrolysis of sugarcane bagasse and thermocol waste

Mohapatra

Singh

2021

Preprint

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The current study explores co-pyrolysis of sugarcane bagasse, and thermocol waste in a semi-batch reactor to evaluate the influence of temperature, and blending ratio on yield of products, and reaction time, and thereby characterize the maximum liquid product. The properties of liquid product (bio-oil), and the solid product (bio-char) obtained from thermal sugarcane bagasse, and co-pyrolysis sugarcane bagasse: thermocol waste bio-oil were investigated for physicochemical characterizations. The compositional analysis result of the co-pyrolysis liquid product established the presence of several aromatic compounds. The co-pyrolysis liquid product manifested a higher calorific value, carbon, and hydrogen content as compared to sugarcane bagasse thermal pyrolysis bio-oil. The co-pyrolysis liquid product can be used as a liquid fuel in internal combustion engines, as well as a precursor for value-added chemicals. The properties of bio-char suggested it can be used as a solid fuel, as well as an adsorbent.

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Co-pyrolysis behavior, engine performance characteristics, and thermodynamics of liquid fuels from mahua seeds and waste thermocol: A comprehensive study

Cited by 30 publications

References 48 publications

Experimental study on kinetic characteristics of oil sludge gasification

Experimental study on kinetic characteristics of oil sludge gasification

Performance and Emission Characteristics of Pyrolysis Oil Obtained from Neem de Oiled Cake and Waste Polystyrene in a Compression Ignition Engine

Production and characterization of the maximum liquid product obtained from co-pyrolysis of sugarcane bagasse and thermocol waste

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