Enzymatic Preparation: D l t f Eh dP f &S ti bilit Developments f or EnhancedP erf ormance &Sustainability A collaborative approach by Cotton Inc. and DuPont to integrate and optimize enzymatic processing in knits Mary‐Ann Ankeny Director Dyeing Research @ Cotton Incorporated, Cary (NC) USA Nico van Schoot Marketing Manager @ DuPont Industrial BioSciences, Leiden NL “Great Ideas in Cotton” – Hongkong, 22 May 2012
Trials with Cotton Incorporated Demonstrate Effectiveness & Efficiency
The trials, which focused on ways to integrate and bio-optimize textile processing in knits, show that biobased enzymes used in combination can eliminate the need for caustic chemicals, while dramatically reducing water and energy use, as well as overall processing time.
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Enzymatic Preparation: D l t f E h d P f & S t i bilitDevelopments for Enhanced Performance & Sustainability
A collaborative approach by Cotton Inc. and DuPont to integrate and optimize enzymatic processing in knits
Mary‐Ann Ankeny Director Dyeing Research @ Cotton Incorporated, Cary (NC) USANico van Schoot Marketing Manager @ DuPont Industrial BioSciences, Leiden NL
“Great Ideas in Cotton” – Hongkong, 22 May 2012
Agenda
• Introduction DuPont Industrial BioSciences• Enzymes for Textiles• Full Enzymatic Textile Processing (FETP), a new concept for sustainable textile
processing• Cotton Inc. study FETP on knits
2Enzymatic Preparation: Developments for Enhanced Performance & Sustainability
DuPont Industrial BioSciences
W l i i t fi d l ti t j h llWe are applying our science to find solutions to major challenges…
FEEDING THE WORLD REDUCING OUR DEPENDENCE ON FOSSIL FUELS
KEEPING PEOPLE AND THE ENVIRONMENT SAFE
3Enzymatic Preparation: Developments for Enhanced Performance & Sustainability
Textile enzymes today..
4Enzymatic Preparation: Developments for Enhanced Performance & Sustainability
PrimaGreen® enzymesEnzymes:Enzymes:
• are biodegradable
• are made from renewable resources
• can replace corrosive chemicals
• can lower use of water and energy
PrimaGreen® enzyme products for textiles & garments:
• lower processing temperatures decrease energy consumption & CO2 emissions
• allow combined processing decrease water consumptionp g p
• work at neutral pH gentle & safer processing conditions
• are substrate specific reduce fabric damage & weight loss
5Enzymatic Preparation: Developments for Enhanced Performance & Sustainability
Full enzymatic textile processing
… at neutral pH & mild temperature conditions.
6Enzymatic Preparation: Developments for Enhanced Performance & Sustainability
Agenda
• Introduction DuPont Industrial BioSciences• Enzymes for Textiles• Full Enzymatic Textile Processing (FETP), a new concept for sustainable textile
processing• Cotton Inc. study FETP on knits
7Enzymatic Preparation: Developments for Enhanced Performance & Sustainability
Minimizing pH Adjustments
C i l E iConventional Scour/Conventional Bleach
Dye FixationDye FixationCellulase Inactivation
Conventional Enzymatic
Acid Cellulase
Incoming WaterNeutralizationIncoming Water Neutralization
Neutralization
Neutral Cellulase/ Dye Exhaustion
Dye Exhaustion
Enzymatic Scour/ Enzymatic Bleach
Acid Cellulase
Each pH adjustment increases:• processing time• chemical usage• potential for fabric damage
8Enzymatic Preparation: Developments for Enhanced Performance & Sustainability
• The goods bleached with the standard enzymatic formula did not match the level of whiteness of conventionallydid not match the level of whiteness of conventionally bleached goods.
• The difference in whiteness level did not have a significant impact on the color of dyed goodssignificant impact on the color of dyed goods.
• The whiteness level can be increased by adjusting the enzymatic formula if a higher degree of whiteness is required.
9Enzymatic Preparation: Developments for Enhanced Performance & Sustainability
q
Process Comparison – Dark ShadeTotal Time: 389T t l Fill 13Total Fills: 13
Total Time: 266Total Fills: 7
10Enzymatic Preparation: Developments for Enhanced Performance & Sustainability
Process Comparison – Medium ShadeTotal Time: 413T t l Fill 14Total Fills: 14
Total Time: 341Total Fills: 8
11Enzymatic Preparation: Developments for Enhanced Performance & Sustainability
Process Comparison – Light ShadeTotal Time: 350T t l Fill 13Total Fills: 13
Total Time: 250Total Fills: 6
12Enzymatic Preparation: Developments for Enhanced Performance & Sustainability
Sustainability – Water, Steam, and Energy
PROCESS Time (mins) Water used (l) Steam Used (lbs) Power (kWH)
Dark Shade (Reactive Dye)Conventional 415 14436 412.81 20Enzymatic 318 2371 331.26 15% I t 23% 84% 20% 25%% Improvement 23% 84% 20% 25%