VII Simposio Internacional de Química 2019 "SIQ 2019" -XII Conferencia "La Ingeniería Química: Desarrollo, potencialidades y sus retos"

VII Simposio Internacional de Química 2019

SIQ 2019

Complete conversion of hardwood bark through organosolv biorefinery

Resumen [ES]

Bark is the residue of wood transformation generated in the highest quantities. The principal uses of these valuable lignocellulosic materials are in landfill or for heat generation, thus failing to better exploit its multiple components. We have been studying forest extractives as rich sources of bioactive molecules for many years. In the present research we are exploring the two-step process consisting of pre- extraction followed by organosolv pulping. The organosolv process applied in this research is based on use of a Lewis acid as catalyst (ferric chloride) and has recently been patented, The pre- extraction step, using ethanol- water solvent system, yields a variety of polyphenols and sugars, while the pulping with the same solvent system gives access to bark polymers: cellulosic pulp and organosolv lignin. The residual liquor contains the products of hemicelluloses transformation. This approach allows for a conversion of bark residue into several new products with distinctive application: bark extract as food ingredient, organosolv lignin in polymer composites application and the hemicellulose products for organic synthesis.

Resumen [EN]

Bark is the residue of wood transformation generated in the highest quantities. The principal uses of these valuable lignocellulosic materials are in landfill or for heat generation, thus failing to better exploit its multiple components. We have been studying forest extractives as rich sources of bioactive molecules for many years. In the present research we are exploring the two-step process consisting of pre- extraction followed by organosolv pulping. The organosolv process applied in this research is based on use of a Lewis acid as catalyst (ferric chloride) and has recently been patented, The pre- extraction step, using ethanol- water solvent system, yields a variety of polyphenols and sugars, while the pulping with the same solvent system gives access to bark polymers: cellulosic pulp and organosolv lignin. The residual liquor contains the products of hemicelluloses transformation. This approach allows for a conversion of bark residue into several new products with distinctive application: bark extract as food ingredient, organosolv lignin in polymer composites application and the hemicellulose products for organic synthesis.

Sobre el ponente

Tatjana Stevanovic Janezic

Dr. Tatjana Stevanovic Janezic

Wood chemistry Laboratory, Department of Wood and Forest Sciences, Université Laval, Québec City Flag of Canadá
Información Práctica
Ponencia
English (US)
No definido
30 minutos
No definido
Autores
Dr. Tatjana Stevanovic Janezic
Palabras clave
bark extract
biorefinery
extraction
organosolv