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Can I read Biodiesel, biogas and fermentable sugars production from Spent coffee Grounds: A cascade biorefinery approach on EtoBox?
Biodiesel, biogas and fermentable sugars production from Spent coffee Grounds: A cascade biorefinery approach by Federico Battista; Luca Zuliani; Fabio Rizzioli; Salvatore Fusco; David Bolzonella is a Engineering article available to read on EtoBox.
What is Biodiesel, biogas and fermentable sugars production from Spent coffee Grounds: A cascade biorefinery approach about?
Spent coffee grounds are rich in high-value compounds, such as saturate and unsaturated fatty acids, and polysaccharides. Therefore, this work investigated a cascade biorefinery to produce: i) biodiesel from coffee oils, ii) cellulose- and hemicellulose-derived fermentable sugars and iii) biomethane from the residual solid fraction after sugars extraction. Transesterification reached the best performances of 86% w/w of fatty acid methyl esters using 1:8 coffee oil/methanol ratio and 2% w/w of KOH as catalyst. The use of glycerol for the pretreatment of spent coffee grounds allowed the internal circulation of a process leftover from transesterification; thus, avoiding the use of clean water. In the best conditions, the total released fermentable sugars were about 40-50% (w/w) on dry weight basis. The low content of easily degradable compounds led to a low methane production of 50 L/kg, indicating the need to search for better performing alternatives to close the biorefinery loop.
Who reads Biodiesel, biogas and fermentable sugars production from Spent coffee Grounds: A cascade biorefinery approach?
It is typically read by researchers, students, and practitioners in Engineering.
- Author
- Federico Battista; Luca Zuliani; Fabio Rizzioli; Salvatore Fusco; David Bolzonella
- Published
- 2021
- Language
- EN
- Field
- Engineering (Physical Sciences)