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Biofuels from spent coffee grounds: comparison of processing routes
(Taylor & Francis, 2020)
Bulk fuel was produced from spent coffee grounds (SCG) using different oil extraction and fuel production methods. The highest oil yield (30.2%) and energy efficiency (50%) from continuous hydrothermal liquefaction (CHTL) ...
The evaluation of spent coffee grounds as feedstock for continuous hydrothermal liquefaction
(EARET, 2018)
This study looks at converting a low-value waste
in a continuous hydrothermal liquefaction reactor to a
high-value biocrude and biochar product. The feedstock
chosen for this study was spent coffee grounds (SCG) as
spent ...
A comparison of batch extracted bio-oil and continuous hydrothermal liquefaction bio-oil using spent coffee grounds as biomass feedstock
(EARET, 2018)
This study focuses on bio-oil obtained from spent
coffee grounds, either by reflux extraction or continuous
hydrothermal liquefaction. Spent coffee grounds was chosen as
feedstock for this study as it is available around ...
The effect of aqueous phase recirculation during hydrothermal liquefaction of spent coffee grounds
(EARET, 2018)
Batch hydrothermal liquefaction of spent coffee grounds
was done in this study. The effect of subsequent diluted aqueous phase
recirculation was studied at a constant temperature of 275 °C and
residence time of 10 ...
A spent coffee grounds based biorefinery for the production of biofuels, biopolymers, antioxidants and biocomposites
(Elsevier, 2018)
Spent coffee grounds are composed of lipid, carbohydrates, carbonaceous, and nitrogen containing compounds among others. Using n-hexane and n-hexane/isopropanol mixture highest oil yield was achived during soxhlet extraction ...
Hydrothermal preparation of biochar from spent coffee grounds, and its application for the removal of cadmium from coal tailings leachate
(SAIMM, 2019)
Spent coffee grounds were transformed into biochar using a hydrothermal method. Some of the biochar
product was pre-treated through surfactant impregnation with sodium dodecyl sulphate (SDS) to
enhance its adsorption ...
Chemical and physical characterization of spent coffee ground biochar treated by a wet oxidation method for the production of a coke substitute
(Elsevier, 2020)
Coke production relies on the availability, cost and quality of coking coal. Depleting coking coal resources and environmental pressure force the metallurgical industry to search for alternative methods to produce coke. ...
Technical valorisation of spent coffee grounds and food waste using sulphuric acid immobilised on silica
(Taylor & Francis, 2020)
Biodiesel from spent coffee grounds and food waste was prepared using sulphuric acid immobilised on silica gel (H2SO4–SiO2) as a catalyst. Reactions were carried out under reflux conditions using 15 mmol methanol. Food ...