Production of green diesel via hydrogen-free and solventless deoxygenation reaction of waste cooking oil

Razak, Noor Azira Abdul; Mijan, Nurul-Asikin; Taufiq‐Yap, Yun Hin; Derawi, Darfizzi

doi:10.1016/j.jclepro.2022.132971

Cited by 16 publications

(6 citation statements)

References 44 publications

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“…The explicit reaction time influence was investigated on deoxygenation of waste cooking oil and its derivatives over NiCo/SBA-15. 11 Within 2 hours, the product yield increased from 18% to 80% and hydrocarbon selectivity inclined from 31% to 70%. The study on methyl laurate over Co/ZSM-5 reported similar trend with the maximum conversion was attained after 4 hours.…”

Section: Influence Of Reaction Timementioning

confidence: 99%

“…Similar result were also observed elsewhere. 11,[73][74][75][76][77][78][79][80] Apart from conversion, reaction temperature also determines the reaction pathway assigned by the selectivity of the products. Higher temperature favours decarboxylation/ decarbonylation since this condition allow C-C cleavage and carboxylic group release as CO 2 or CO.…”

Section: Influence Of Temperaturementioning

confidence: 99%

“…This second generation involves the production of biofuel with the same structure as fossil fuel such as green diesel. [7][8][9][10][11] The third generation biofuel refers to the biodiesel generated from microalgae. 12 Lastly, the fourth generation biofuel refers to the metabolism of genetically modied algae.…”

Section: Introductionmentioning

confidence: 99%

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Selectivity of reaction pathways for green diesel production towards biojet fuel applications

et al. 2023

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Section: Influence Of Reaction Timementioning

confidence: 99%

Section: Influence Of Temperaturementioning

confidence: 99%

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Selectivity of reaction pathways for green diesel production towards biojet fuel applications

et al. 2023

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“…Selection of municipal waste such as WCO could reduce the high cost to manage the WCO. Study by Khalit et al, (2021) [3], Yildiz et al, (2019) [4], Razak et al, (2022) [5] and Li et al, (2018) [6] reported the positive potential of WCO to be converted into green diesel based on the produced hydrocarbon from these studies, meet with the diesel selectivity. These works utilized the use of various catalysts to enhance the hydrocarbon quality of the green diesel as well as the liquid product yield.…”

Section: Introductionmentioning

confidence: 96%

Production of green diesel from waste cooking oil via catalytic deoxygenation reaction using metal doped eggshell catalyst

Lee,

Seah,

Habib

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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Green diesel production via catalytic deoxygenation of waste cooking oil (WCO) over metal doped eggshell catalyst was investigated in this work. The catalyst was prepared through liquid-liquid precipitation of 5 transition metal solutions and ground eggshell (ES) as the catalyst support. The prepared catalyst, Fe-ES, Cu-ES, Co-ES, Zn-ES, and Ni-ES were characterized using BET surface area and Scanning Electron Microscopy (SEM) analysis. BET surface area data and SEM images of the catalyst shows a promising catalyst physical properties that tailor to the deoxygenation reaction. Gas Chromatography Mass Spectrometry (GCMS) was used to determine the hydrocarbon composition of the oil yield product from the reaction. The reaction also produces gas, soap and liquid acid phase while the remaining unreacted WCO becomes coke. The percentage of all products and coke were calculated using mass balance. Deoxygenation of WCO with Ni-ES catalyst produced highest oil yield at 61.6% with the hydrocarbon content of 56.11%. Ni-ES also produced 22.9% coke; the least percentage compared to other catalyst. The findings proved that Ni-ES catalyst exhibited the highest conversion of WCO into gas and liquid product with a greater yield of oil and minimal coke formation. These findings demonstrate the feasibility and practicality of using eggshell catalysts as substitutes for commercial catalysts in green diesel production.

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“…Several types and processes of biomass-to-energy conversion are known, which can be biochemical, thermochemical, or physicochemical. Drying, torrefaction, combustion, gasification, and pyrolysis were utilized to convert biomass into usable products [7]. Pyrolysis is the name given to the thermal decomposition of biomass in the absence of oxygen, and the outputs of this process are biochar, bio-oil, and syngas [8].…”

Section: Introductionmentioning

confidence: 99%

Parametric study of bio-char production from the co-pyrolysis of tire and coffee wastes via fixed bed reactor

Žabčić,

Hilal,

Rocha-Meneses

et al. 2024

J. Phys.: Conf. Ser.

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Co-pyrolysis has become an eye-catching process for obtaining fuel and biochar and is attracting attention from both the scientific and industrial communities. One of the reasons for this is the wide variety of raw materials for the process itself and the possibility of obtaining attractive and high-quality products. The influence of three distinctive parameters has been studied on the co-pyrolysis reaction. These variables were temperature, reaction time, and plastic ratio. The results were analysed using Response Surface Methodology (RSM), and it was found that the optimum conditions to produce biochar from the co-pyrolysis of coffee and tire wastes were 359.441 °C, 10 minutes of reaction duration, and a plastic ratio of 97.8528 wt.%.

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Production of green diesel via hydrogen-free and solventless deoxygenation reaction of waste cooking oil

Cited by 16 publications

References 44 publications

Selectivity of reaction pathways for green diesel production towards biojet fuel applications

Selectivity of reaction pathways for green diesel production towards biojet fuel applications

Production of green diesel from waste cooking oil via catalytic deoxygenation reaction using metal doped eggshell catalyst

Parametric study of bio-char production from the co-pyrolysis of tire and coffee wastes via fixed bed reactor

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