Nezyme PK2 | Enzyme Based Peroxide Scavenger

• Product Information

  Specially designed enzymatic preparation to neutralize peroxide immediately after scouring / bleaching process.

• Key Features & Benefits

  The use of  Nezyme PK2 against the traditional use of reducing chemicals will result in:

  • Time Savings
  • Cost Savings
  • Energy Savings
  • Minimizing Wastewater Problems

  Nezyme PK2 is a concentrated preparation that should be diluted at least 10 times before application.

  Comparative process for scouring before dyeing cotton and cellulosic materials semi-bleached:

  • 3~6 g/L H2O2 (50%)
  • 2g/L NaOH
  • Approximate residual peroxide content immediately after bleach: 800ppm ~ 1000ppm.

  Step	By Continuous Rinses	By Reducing Chemicals	By Saizyme PK2 Treatment
  A)	RINSE #1 (WARM), Residual Peroxides >250 ppm	RINSE #1 (WARM), Residual Peroxides >250 ppm	RINSE #1 (WARM), Residual Peroxides >250 ppm
  B)	RINSE #2 (WARM), Residual Peroxides >70 ppm	RINSE #2 (COLD), Residual Peroxides >70 ppm	ADD ACETIC ACID, pH 6 - 8 (NEUTRAL), THEN ADD 0.01 – 0.02g/L DILUTED SAIZYME PK2, RUN 10 ~ 20 MINS. START DYEING.
  C)	RINSE #3 (COLD), Residual Peroxides >20 ppm	ADD REDUCING CHEMICALS 40 x 15-20’
  D)	RINSE #4 (COLD), Residual Peroxides +/- 10 ppm	RINSE
  E)	RINSE #5 (COLD), Residual Peroxide +/- 2-5 ppm	RINSE
  F)	START DYEING	START DYEING	START DYEING
  	5 RINSE BATHS	5 RINSE BATHS	1 RINSE BATH

  Dosage and Use of Nezyme PK2:

  • Nezyme PK2 is used to completely neutralize hydrogen peroxides in the water bath.
  • It eliminates the need for harmful and unstable reducing chemicals.
  • Nezyme PK2 does not stain fabrics or react with dyestuffs.
  • It is a water-based product with excellent biodegradability.

• Properties

  • Appearance :   Brown-Greenish Liquid
  • pH Value Solution at 20°C :   7 +/- 1
  • Specific Gravity (S.G.) :   1.1 +/- 0.1
  • Odor :   Negligible
  • Solubility :   Totally Soluble in Water

• Storage & Packing

  Packing: 30 KG Jerry Can

  Storage: Under closed condition; at 30°C, Stability; 6-12 months

  Transport: Product is not classified as hazardous.

   

   

• other Information

  • After Scouring/Semi-Bleach: Wash/Rinse goods once with warm water. Drain the bath.
  • Procedure:
    • Add acetic acid (+/- 0.2g/L) to neutralize the pH of the bath to between 6-8.
    • Add diluted Saizyme PK2 (0.01-0.02g/L).
    • Run for 10-20 minutes.
    • Sample water for residual peroxides with an indicator dip-stick.
    • Add dyestuffs and auxiliaries, salt, and continue with normal dyeing and finishing processes.
  • Workable pH Range: 5 – 9
  • Optimal pH Range: 6 – 8
  • Workable Temperature Range: 25°C – 70°C
  • Optimal Temperature Range: 55°C +/- 5°C