Hydrothermal Conversion in Near-Critical Water – A Sustainable Way of Producing Renewable Fuels

Author(s):  
Jessica Hoffmann ◽  
Thomas H. Pedersen ◽  
Lasse A. Rosendahl
Author(s):  
Daniel Felipe Rodriguez-Vallejo ◽  
Antonio Valente ◽  
Gonzalo Guillén-Gosálbez ◽  
Benoit Chachuat

Reducing the contribution of the transport sector to climate change calls for a transition towards renewable fuels. Polyoxymethylene dimethyl ethers (OMEn) constitute a promising alternative to fossil-based diesel. This article...


2021 ◽  
Vol 237 ◽  
pp. 116547
Author(s):  
Quyet Van Le ◽  
Van-Huy Nguyen ◽  
Trinh Duy Nguyen ◽  
Ajit Sharma ◽  
Gul Rahman ◽  
...  

2021 ◽  
Author(s):  
Xinpeng Zhao ◽  
Zhimin Zhou ◽  
hu luo ◽  
Yanfei Zhang ◽  
Wang Liu ◽  
...  

Combined experiments and density functional theory (DFT) calculations provided insights into the role of the environment-friendly γ-valerolactone (GVL) as a solvent in the hydrothermal conversion of glucose into lactic acid...


Fuel ◽  
2021 ◽  
Vol 302 ◽  
pp. 121166
Author(s):  
Fatih Güleç ◽  
Luis Miguel Garcia Riesco ◽  
Orla Williams ◽  
Emily T. Kostas ◽  
Abby Samson ◽  
...  

2021 ◽  
Vol 148 ◽  
pp. 106054
Author(s):  
Lina Martinez-Valencia ◽  
Dane Camenzind ◽  
Mark Wigmosta ◽  
Manuel Garcia-Perez ◽  
Michael Wolcott

Energies ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4492
Author(s):  
Komeil Kohansal ◽  
Kamaldeep Sharma ◽  
Saqib Sohail Toor ◽  
Eliana Lozano Sanchez ◽  
Joscha Zimmermann ◽  
...  

This study focuses on the valorization of the organic fraction of municipal solid waste (biopulp) by hydrothermal liquefaction. Thereby, homogeneous alkali catalysts (KOH, NaOH, K2CO3, and Na2CO3) and a residual aqueous phase recirculation methodology were mutually employed to enhance the bio-crude yield and energy efficiency of a sub-critical hydrothermal conversion (350 °C, 15–20 Mpa, 15 min). Interestingly, single recirculation of the concentrated aqueous phase positively increased the bio-crude yield in all cases, while the higher heating value (HHV) of the bio-crudes slightly dropped. Compared to the non-catalytic experiment, K2CO3 and Na2CO3 effectively increased the bio-crude yield by 14 and 7.3%, respectively. However, KOH and NaOH showed a negative variation in the bio-crude yield. The highest bio-crude yield (37.5 wt.%) and energy recovery (ER) (59.4%) were achieved when K2CO3 and concentrated aqueous phase recirculation were simultaneously applied to the process. The inorganics distribution results obtained by ICP reveal the tendency of the alkali elements to settle into the aqueous phase, which, if recovered, can potentially boost the circularity of the HTL process. Therefore, wise selection of the alkali catalyst along with aqueous phase recirculation assists hydrothermal liquefaction in green biofuel production and environmentally friendly valorization of biopulp.


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