Synergistic thermophilic co‐fermentation of food and lignocellulosic urban waste with steam explosion pretreatment for efficient hydrogen and carboxylic acid production

2021 ◽  
Author(s):  
Luis D. Allegue ◽  
Daniel Puyol ◽  
Juan Antonio Melero
Keyword(s):  
Carboxylic Acid ◽  
Acid Production ◽  
Steam Explosion ◽  
Urban Waste ◽  
Steam Explosion Pretreatment

scholarly journals An extensive parameter study of hydrotropic extraction of steam-pretreated birch

2021 ◽  
Author(s):  
Johanna Olsson ◽  
Michael Persson ◽  
Mats Galbe ◽  
Ola Wallberg ◽  
Ann-Sofi Jönsson
Keyword(s):  
Residence Time ◽  
Steam Explosion ◽  
Room Temperature ◽  
Initial Step ◽  
Parameter Study ◽  
Hydrothermal Degradation ◽  
Steam Explosion Pretreatment ◽  
Lignin Extraction ◽  
Extraction Step ◽  
Lignin Recovery

AbstractEfficient fractionation of lignocellulosic biomass is an important step toward the replacement of fossil-based products. However, the utilisation of all of the components in biomass requires various fractionation techniques. One promising process configuration is to apply steam explosion for the recovery of hemicelluloses and a subsequent hydrotropic extraction step for the delignification of the remaining solids. In this work, the influence of residence time, temperature and biomass loading on lignin recovery from birch using sodium xylene sulphonate as a hydrotrope was investigated. Our results show that residence time, temperature and biomass loading correlate positively with lignin extraction, but the effects of these parameters were limited. Furthermore, when steam explosion was implemented as the initial step, hydrotropic extraction could be performed even at room temperature, yielding a lignin extraction of 50%. Also, hydrothermal degradation of the material was necessary for efficient delignification with sodium xylene sulphonate, regardless of whether it occurs during steam explosion pretreatment or is achieved at high temperatures during the hydrotropic extraction.

Capillary electrophoresis for the monitoring of carboxylic acid production by Gluconobacter oxydans

2010 ◽  
Vol 1217 (9) ◽  
pp. 1537-1542 ◽  
Author(s):  
Heidi Turkia ◽  
Heli Sirén ◽  
Juha-Pekka Pitkänen ◽  
Marilyn Wiebe ◽  
Merja Penttilä
Keyword(s):  
Capillary Electrophoresis ◽  
Carboxylic Acid ◽  
Acid Production ◽  
Gluconobacter Oxydans

Effect of Steam Explosion Pretreatment on Size Reduction and Pellet Quality of Woody and Agricultural Biomass

2015 ◽  
pp. 27-53 ◽  
Author(s):  
Pak Sui Lam ◽  
Pak Yiu Lam ◽  
Shahab Sokhansanj ◽  
Xiaotao T. Bi ◽  
C. Jim Lim ◽  
...  
Keyword(s):  
Steam Explosion ◽  
Thermal Power ◽  
Chemical Conversion ◽  
Size Reduction ◽  
Pellet Quality ◽  
Agricultural Biomass ◽  
Steam Explosion Pretreatment ◽  
Research Findings ◽  
High Bulk

Steam explosion is a thermo-chemical pretreatment widely used to disrupt the ultra-structure of the cell wall of the ligno-cellulosic fiber to improve the fractionation of the major ligno-cellulosic components of the biomass for biochemical conversion. In recent years, steam explosion pretreatment has been applied on the fibers for improving the pellet quality of woody and agricultural biomass for thermo-chemical conversion. The improved qualities include high bulk density, low equilibrium moisture content, higher heating value, mechanical strength and moisture resistance. All of these desirable properties allow the steam exploded pellets to be handled and stored outdoors safely, similar to coal. This also raises lots of interests in considering pellets as preferable feedstock for the thermal power plant or bio-refinery facilities. In this chapter, the state of art of research findings on the effect of steam explosion on size reduction and pellet quality of woody and agriculture biomass will be discussed.

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