P1253814627qehWt

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Universidade de Aveiro Theoria poiesis praxis
Bio-refinaria Uma aproximação integrada à
produção de produtos químicos e materiais a
partir de fontes renováveis
Armando J. D. Silvestre
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Introduction

• Society needs to find renewable alternatives to
  fossil resources in the coming decades
• Geopolitical instability of producing countries,
  and growing demand will lead to unpredictable
  rises in oil prices
• Global warming
• Exhaustion of fossil resources
• A challenge to civilization

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The biorefinery concept

• The goal of a biorefinery
• to replace oil refineries
• Using biomass to produce
• Fuels and energy,
• Chemicals and materials

• A new concept of sustainable development
• Bio-Economy

Kamm B. et al In Biorefineries-Industrial
Processes and Products,
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• Introduction
• The Lignocellulosic feedstock biorefinery
• Biorefinery_at_CICECO some contributions
• Concluding remarks

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The biorefinery concept

• LCF biorefinery might become the most
  successful (1)
• The availability of feedstocks at competitive
  prices
• Wood, annual plants, crop wastes/by-products,
  etc.
• The relative homogeneity of composition of LCFs
• processing of a wide variety of feedstocks in
  the same plant
• An integrated LCF biorefinery requires the use of
  two main processing platforms Sugar and
  thermochemical
• LCF biorefineries do not compete with food
  industry.
• Although this competition is not necessarily a
  threat
• nor the only reason for the rise in food
  prices

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The biorefinery concept

• LCF biorefinery might become the most successful
  (2)
• LCF-Biorefineries can be developed based on
  existing pulp mills
• Reduced investment
• In a First stage valorisation of waste streams

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• Introduction
• The biorefinery concept
• Converting biomass into chemicals
• Biorefinery_at_CICECO some contributions
• Concluding remarks

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Converting biomass into chemicals

• Carbohydrates will be the key starting materials
  for the production of platform chemicals
• Which chemicals?
• The PNNL / NREL report (2004)

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Converting biomass into chemicals
Processing via Platform Chemicals Which chemicals?
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• Introduction
• The biorefinery concept
• Biorefinery_at_CICECO
• Concluding remarks

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http//lignomacro.dq.ua.pt/
http//idpor.ciceco.ua.pt/
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Biorefinery_at_CICECO
Extractives as source of high value chemicals E.
globulus extractives Lipophilic bark extractives
Outer bark is particularly interesting
12 g/kg 4.0 g/kg

• Promising pharmacological and nutraceutical
  applications
• High commercial value

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Biorefinery_at_CICECO
Controlled heterogeneous modification of
cellulose fibers A source of new biobased
materials
Modification examples fatty acids perfluorinate
d acids
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Biorefinery_at_CICECO
Controlled heterogeneous modification with fatty
acids
Cellulose
Non-swelling medium
Swelling medium
C22DMF
C22T1h
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Biorefinery_at_CICECO
Controlled heterogeneous modification with
perfluorinated acids Surface properties
Highly hydrophobic
Highly lipophobic
Very low surface energies
Low dependence on DS
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Biorefinery_at_CICECO
Polymers from cork and cork components
The oxypropylation of cork powder

• Chain extension process of OH bearing
  macromolecular materials
• Conversion of solid/viscous materials into liquid
  polyols

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