scholarly journals An integrated biorefinery to produce 5-(hydroxymethyl)furfural and alternative fuel precursors from macroalgae and spent coffee grounds

2021 ◽  
Author(s):  
André Prates Pereira ◽  
Timothy J. Woodman ◽  
Christopher J. Chuck
Keyword(s):  
Alternative Fuel ◽  
Hydrothermal Liquefaction ◽  
Spent Coffee Grounds ◽  
Integrated Biorefinery ◽  
Hydroxymethyl Furfural ◽  
Coffee Grounds

In this study an integrated biorefinery is presented, producing 5-hydroxymethylfurfural (HMF) and products from the hydrothermal liquefaction of spent coffee grounds blended with macroalgae.

Hydrothermal liquefaction of spent coffee grounds followed by biocatalytic upgradation to produce biofuel: a circular economy approach

Biofuels ◽  
2021 ◽  
pp. 1-10
Author(s):  
Louis Christiaan Muller ◽  
Jaco Pearson ◽  
Jaco Louw ◽  
Sanette Marx ◽  
Sanjib Kumar Karmee
Keyword(s):  
Circular Economy ◽  
Hydrothermal Liquefaction ◽  
Spent Coffee Grounds ◽  
Coffee Grounds

Spent coffee grounds biochar from torrefaction as a potential adsorbent for spilled diesel oil recovery and as an alternative fuel

Energy ◽  
2021 ◽  
pp. 122467
Author(s):  
Kuan-Ting Lee ◽  
Ching-Lin Cheng ◽  
Da-Sheng Lee ◽  
Wei-Hsin Chen ◽  
Dai-Viet N. Vo ◽  
...  
Keyword(s):  
Oil Recovery ◽  
Alternative Fuel ◽  
Diesel Oil ◽  
Spent Coffee Grounds ◽  
Coffee Grounds

scholarly journals Hydrothermal liquefaction of spent coffee grounds in water medium for bio-oil production

2016 ◽  
Vol 86 ◽  
pp. 191-198 ◽  
Author(s):  
Linxi Yang ◽  
Laleh Nazari ◽  
Zhongshun Yuan ◽  
Kenneth Corscadden ◽  
Chunbao (Charles) Xu ◽  
...  
Keyword(s):  
Oil Production ◽  
Hydrothermal Liquefaction ◽  
Water Medium ◽  
Spent Coffee Grounds ◽  
Coffee Grounds ◽  
Bio Oil

An alternative biorefinery approach to address microalgal seasonality: blending with spent coffee grounds

2020 ◽  
Vol 4 (7) ◽  
pp. 3400-3408 ◽  
Author(s):  
Andre Prates Pereira ◽  
Tao Dong ◽  
Eric P. Knoshaug ◽  
Nick Nagle ◽  
Ryan Spiller ◽  
...  
Keyword(s):  
Hydrothermal Liquefaction ◽  
Spent Coffee Grounds ◽  
Carbohydrate Fraction ◽  
Coffee Grounds ◽  
Fuels And Chemicals

An effective method for the production of fuels and chemicals from microalgae is to ferment the carbohydrate fraction, extract the lipids and convert the resulting solids through hydrothermal liquefaction (HTL).

scholarly journals A Comparative Study on Thermochemical Valorization Routes for Spent Coffee Grounds

Energies ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3840
Author(s):  
Jie Yang ◽  
Hao Chen ◽  
Haibo Niu ◽  
Josiah McNutt ◽  
Quan He
Keyword(s):  
Oil Extraction ◽  
Hydrothermal Liquefaction ◽  
Biodiesel Production ◽  
Optimal Conditions ◽  
Spent Coffee Grounds ◽  
Microwave Assisted ◽  
Assisted Extraction ◽  
Coffee Grounds ◽  
Biodiesel Synthesis ◽  
Biochemical Compositions

Extracting oil from spent coffee grounds (SCG) for biodiesel production has recently attracted much research interest. Large amounts of organic solvents are involved for oil extraction and biodiesel synthesis. Hydrothermal liquefaction (HTL) is an emerging thermochemical technology with great potential for biocrude production from a broad range of feedstocks. This study attempted to compare two SCG valorization options: route 1, oil extraction for biodiesel production followed by HTL of defatted SCG; and route 2, direct HTL of raw SCG. The microwave-assisted extraction conditions were optimized to effectively remove oil from SCG using response surface methodology. Under optimal conditions, an SCG oil yield of 8.4 wt.% could be achieved. HTL of defatted SCG generated less biocrude (18.9 wt.%) than that of raw SCG (28.1 wt.%). The biochemical compositions of resultant biocrudes were largely different from each other. The life cycle assessment was conducted on each of the SCG valorization routes and showed that the greenhouse gas emissions from direct HTL of raw SCG were only 35% of the other valorization route, suggesting that direct HTL is a favorable valorization route for SCG within this study’s scope.

scholarly journals The Optimized Production of 5-(Hydroxymethyl)furfural and Related Products from Spent Coffee Grounds

2019 ◽  
Vol 9 (16) ◽  
pp. 3369
Author(s):  
Pereira ◽  
Woodman ◽  
Brahmbhatt ◽  
Chuck
Keyword(s):  
Oleaginous Yeast ◽  
Spent Coffee Grounds ◽  
Heating Value ◽  
Hydroxymethyl Furfural ◽  
High Heating Value ◽  
Metschnikowia Pulcherrima ◽  
Coffee Grounds ◽  
Wide Range ◽  
High Heating ◽  
Chemical Functionality

The increasing consumption of coffee worldwide has led to higher amounts of spent coffee grounds (SCG) being produced which are generally disposed of in landfill or used as compost. However, the wide range of molecules present in SCG such as saccharides, lignin, lipids and proteins give this biomass source a large chemical functionality. In this work, SCG were fractionated to separate the components into three separate portions for further valorization; these were hemicellulose-enriched fractions (HEF), lignin-enriched fraction (LEF) and cellulose-enriched fraction (CEF). HEF was effectively used in the growth of the oleaginous yeast Metschnikowia pulcherrima, additionally, the C6 sugars present in this fraction suggests that it can be used in the production of 5-hydroxymethylfurfural (HMF). The LEF had a considerable high heating value (HHV) and would be suitable as a biofuel component for combustion. CEF was efficiently used in the production of HMF as 0.35 g of this product were obtained from 10 g of SCG. Such results demonstrate that SCG can be effectively used in the production of HMF within a biorefinery concept.

Anaerobic digestion of hydrothermal liquefaction wastewater from spent coffee grounds

2021 ◽  
Vol 148 ◽  
pp. 106030
Author(s):  
M.E. Dias ◽  
G.H.D. Oliveira ◽  
P.T. Couto ◽  
K.J. Dussán ◽  
M. Zaiat ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Hydrothermal Liquefaction ◽  
Spent Coffee Grounds ◽  
Coffee Grounds

MW ‐assisted hydrothermal liquefaction of spent coffee grounds

2021 ◽  
Author(s):  
Jie Yang ◽  
Haibo Niu ◽  
Kenneth Corscadden ◽  
Quan He ◽  
Ningning Zhou
Keyword(s):  
Hydrothermal Liquefaction ◽  
Spent Coffee Grounds ◽  
Coffee Grounds
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