Conversion of waste cooking oil into biogas: perspectives and limits

Marchetti, Rosa; Vasmara, Ciro; Bertin, Lorenzo; Fiume, Francesca

doi:10.1007/s00253-020-10431-3

Cited by 40 publications

(17 citation statements)

References 135 publications

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“…Lipids inside WCO have a very high potential for biogas bio-methanation during anaerobic digestion [49]. Normally WCO is used as co-substrate of other lipid fat waste to enhance anaerobic digestion and yield bigger values of methane.…”

Section: Biodegradationmentioning

confidence: 99%

Waste to Energy Potential of Domestic Waste Cooking Oil in Guayaquil: A review.

Rivas¹,

Coello²,

Crespo³

et al. 2020

Proceedings of the 18th LACCEI International Multi-Conference for Engineering, Education, and Technology: Engineering, Integrat

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This paper examines the opportunity for waste cooking oil as a potential source of energy by means of (i) production of biodiesel, (ii) direct burning and (iii) biodegradation. It offers a profound review of existing literature and it measures possible uses of the waste cooking oil produced in the city of Guayaquil. In addition, important chemical and physical properties are presented after the development of a sampling process for after laboratory testing. Conclusions show that the most suitable technology is biodiesel generation, followed by biodegradation, but direct burning is found to be not a possible solution due to its kinematic viscosity.

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Section: Biodegradationmentioning

confidence: 99%

Waste to Energy Potential of Domestic Waste Cooking Oil in Guayaquil: A review.

Rivas¹,

Coello²,

Crespo³

et al. 2020

Proceedings of the 18th LACCEI International Multi-Conference for Engineering, Education, and Technology: Engineering, Integrat

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show abstract

“…Usually, WCO is poured into drain or watercourse [28]. WCO is used in several industries including biodiesel and biogas production [29,30], asphaltic concrete preparation [31], soap manufacturing [32,33], biomass production, and heavy metal treatment [34] to minimize the ongoing environmental threats.…”

Section: Introductionmentioning

confidence: 99%

Polysulfide Synthesis Using Waste Cooking Palm Oil via Inverse Vulcanization

2022

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Elemental sulfur and waste cooking palm oil (WCO) are abundant industrial by-products from petrochemical and food processing industries, respectively. WCO was used as a crosslinker to prepare a high-sulfur-content polymer through inverse vulcanization. Polysulfides were generated under vigorous stirring of WCO with elemental sulfur at different temperatures, crosslinking ratios, and reaction times. The physicochemical properties of the produced polysulfides were determined and the thermal stability was analyzed. The FTIR spectra including the breakdown of C=C and formation of C-S bond confirmed the change of functional groups between WCO and produced polymer. The effect of saturated and unsaturated triglycerides of WCO is clearly visible in SEM micrographs. The polysulfide with a 70 wt % sulfur feed ratio showed excellent morphological and thermal properties.

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“…The valorisation of WFO through AD may also be a good strategy in specific contexts where biodiesel production from waste oil is not an option. WFO are mainly composed by triglycerides (95e96% of the edible oils) and those are generally accompanied by small amounts of mono/diglycerides, free fatty acids, phospholipids, sterols, and hydrocarbons [9]. In AD, triglycerides are first hydrolysed to glycerol and long-chain fatty acids (LCFA) [10].…”

Section: Introductionmentioning

confidence: 99%

“…Biogas recirculation may also improve the mixing [16], which is an important feature in the AD of WFO, since mixing may promote the contact between the hydrophobic substrate and the microbial community. Gas bubbles promote a gentler mixing when comparing with other methods, such as mechanical agitators [9], which represents a critical issue, in preserving the syntrophic relationships based on close proximity of bacterial and archaeal cells, needed for lipid/ LCFA degradation [17].…”

Section: Introductionmentioning

confidence: 99%

Intensification of methane production from waste frying oil in a biogas-lift bioreactor

et al. 2021

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Biogas upgrading from anaerobic digestion of waste frying oils (WFO) was accessed in this study. For that, two bioreactors (Rb-biogas-lift bioreactor with gas and liquid recirculation, Rc-control reactor with liquid recirculation) were fed three times per week, with a mixture of WFO, glycerol and volatile fatty acids (VFA). Rb produced 1.4 times more biogas with higher methane content (79%) than Rc (67%). Higher relative abundance of hydrogenotrophic methanogens (34%e39%) was observed in Rb, when compared to Rc (16%e21%). The relative abundance of Sprochaetia class, which includes some homoacetogens/ syntrophic acetate oxidizing genera, was also higher in Rb. This work shows that biogas recirculation applied in the biogas-lift bioreactor facilitated WFO degradation, most probably due to the selective enrichment of hydrogenotrophic methanogens. Recirculation of CO 2 present in the biogas and reverse homoacetogenesis (i.e. syntrophic acetate oxidation) seem to be the main factors involved in the stimulation of hydrogenotrophic methanogenesis.

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Conversion of waste cooking oil into biogas: perspectives and limits

Cited by 40 publications

References 135 publications

Waste to Energy Potential of Domestic Waste Cooking Oil in Guayaquil: A review.

Waste to Energy Potential of Domestic Waste Cooking Oil in Guayaquil: A review.

Polysulfide Synthesis Using Waste Cooking Palm Oil via Inverse Vulcanization

Intensification of methane production from waste frying oil in a biogas-lift bioreactor

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