Cellulose reactivity in ACel – Industry view by Veli-Matti Vuorenpalo, Kemira ACel Programme Seminar June 5, 2015 http://fibic.fi/events/acel-program-seminar-jun-5-cellulose-reactivity-and-recycling-of-ionic-liquids

1. Cellulose reactivity in
ACel – Industry view
ACel seminar
Veli-Matti Vuorenpalo | June 05, 2015

2. Focus
• Pulp & Paper
• Oil & Gas
• Mining
• Water management
Revenue
EUR 2.14 billion (2014)
Employees
4,250 (2014)
Revenue split by
customer benefit
Product quality or product yield
optimization 50%
Process and energy
efficiency 20%
Water quality and regulatory
compliance in raw water and
wastewater treatment 30%
We help customers create more value by applying
our expertise where water meets chemistry
Kemira is a global chemicals company serving customers in water-intensive industries
Veli-Matti Vuorenpalo - ACel seminar 2
Kemira shares are listed on the NASDAQ OMX Helsinki stock exchange.
05 June 2015

3. Flocculant is a charged water soluble polymer
A POLYMER is a macromolecule derived from
small repeating units - MONOMERS
The charged water soluble polymers are
called POLYELECTROLYTES
How to make cationic polyelectrolytes?
 Polymerize synthetic cationic monomer
 Current industry standard for synthetic polyelectrolyte
 Modify a ready, non charged polymer
 Way to do it in the case of cellulose based
polyelectrolyte
Cationic polyelectrolyte
05 June 2015Veli-Matti Vuorenpalo - ACel seminar 3

4. Synthetic cationic polyelectrolyte
Polymerization of cationic monomers
Veli-Matti Vuorenpalo - ACel seminar
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Monomer
05 June 2015 4

5. Cellulose based cationic polyelectrolyte
Activation of fiber to accessible polymeric structures and cationization after that
05 June 2015Veli-Matti Vuorenpalo - ACel seminar 5
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Activation
Activation

6. Flocculation
Separate particles
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7. Flocculation
Addition of polyelectrolyte
05 June 2015Veli-Matti Vuorenpalo - ACel seminar 7
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8. Flocculation
Floc formation
05 June 2015Veli-Matti Vuorenpalo - ACel seminar 8
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9. Good flocculant needs to be long
Activation should’t make cellulose too reactive and cut the polymeric structures
05 June 2015Veli-Matti Vuorenpalo - ACel seminar 9

10. Role of reactivity and activation in cellulose based flocculants
Controlled activation is important enabler of feasible production
05 June 2015Veli-Matti Vuorenpalo - ACel seminar 10
Cellulose polymer structures needs to be
accessible to cationization
 Enables formation of cationic cellulose polymers
from fiber rather than surface modified fiber
 More feasible cationization with reduced
consumption of reagent
 Enough cationicity in right places enables production
of water soluble polyelectrolyte from fiber
 However, activation should not reduce the length of
the polymer backbone
 Short polymers don’t function as flocculants
 Increased consumption of reagents due to too reactive
cellulose

11. Thank you!