In-situ transesterification of wet spent coffee grounds for sustainable biodiesel production

Park, Jeongseok; Kim, Bora; Lee, Jae Woo

doi:10.1016/j.biortech.2016.09.001

Cited by 124 publications

(36 citation statements)

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“…Several methodologies were developed for valorization of spent coffee grounds by recovery of the polysaccharide fraction, lipids and low molecular weight compounds like chlorogenic acid and other monomeric phenolics or caffeine [56,57,58,59,60,61], or for the production of biodiesel [62,63,64,65]. …”

Section: Main Sources Of Natural Phenol Polymersmentioning

confidence: 99%

Natural Phenol Polymers: Recent Advances in Food and Health Applications

Panzella

Napolitano

2017

Antioxidants

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Natural phenol polymers are widely represented in nature and include a variety of classes including tannins and lignins as the most prominent. Largely consumed foods are rich sources of phenol polymers, notably black foods traditionally used in East Asia, but other non-edible, easily accessible sources, e.g., seaweeds and wood, have been considered with increasing interest together with waste materials from agro-based industries, primarily grape pomace and other byproducts of fruit and coffee processing. Not in all cases were the main structural components of these materials identified because of their highly heterogeneous nature. The great beneficial effects of natural phenol-based polymers on human health and their potential in improving the quality of food were largely explored, and this review critically addresses the most interesting and innovative reports in the field of nutrition and biomedicine that have appeared in the last five years. Several in vivo human and animal trials supported the proposed use of these materials as food supplements and for amelioration of the health and production of livestock. Biocompatible and stable functional polymers prepared by peroxidase-catalyzed polymerization of natural phenols, as well as natural phenol polymers were exploited as conventional and green plastic additives in smart packaging and food-spoilage prevention applications. The potential of natural phenol polymers in regenerative biomedicine as additives of biomaterials to promote growth and differentiation of osteoblasts is also discussed.

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Section: Main Sources Of Natural Phenol Polymersmentioning

confidence: 99%

Natural Phenol Polymers: Recent Advances in Food and Health Applications

Panzella

Napolitano

2017

Antioxidants

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“…For oil extraction SCG drying at: (1) 50 °C (13,14) or (2) 105 °C ± 5 °C can be used (9,11,15). Wet spent coffee grounds (60 wt% moisture) can be used in the direct transesterification (in situ transesterification) (16). Water may occur as unbound and excess moisture or trapped in the microstructure of the solid (bound moisture).…”

Section: Oil Extraction From Spent Coffee Groundsmentioning

confidence: 99%

“…Saponification not only consumes the alkali catalyst, but also the resulting soaps can cause the formation of emulsions. Emulsion formation creates difficulties in downstream recovery and purification of the biodiesel (16,30,31).…”

Section: One Step Alkali-catalyzed Transesterificationmentioning

confidence: 99%

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Biodiesel Production from Spent Coffee Grounds

Blinová

Bartošová

Sirotiak

2017

Research Papers Faculty of Materials Science and Technology Slovak University of Technology

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The residue after brewing the spent coffee grounds is an oil-containing waste material having a potential of being used as biodiesel feedstock. Biodiesel production from the waste coffee grounds oil involves collection and transportation of coffee residue, drying, oil extraction, and finally production of biodiesel. Different methods of oil extraction with organic solvents under different conditions show significant differences in the extraction yields. In the manufacturing of biodiesel from coffee oil, the level of reaction completion strongly depends on the quality of the feedstock oil. This paper presents an overview of oil extraction and a method of biodiesel production from spent coffee grounds.

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“…Brazil has been highlighted in the world scenario as a potential biodiesel producer, due to its diversity of oilseeds (Silva et al, 2015). One of the main oilseeds used in the production of biodiesel is soybeans, which covers about 50% of the biodiesel produced in the world (Park et al, 2016).…”

Section: Introductionmentioning

confidence: 99%