Added value for tissue makers created byefficient chlorine-free microbe control programJaakko Ekman, Roberto Zulian, James...
Content• Introduction to Performic Acid (PFA) technology• Case story from Lucart PM 7 in Italy• Experiences from other mil...
Performic acid (PFA) chemistry• Produced on-site from formic acidand hydrogen peroxideHCOOH + H2O2 → HCOOOH + H2O• PFA pro...
PFA is a green disinfection agent withvery high performanceJaakko Ekman & James Atkinson 410100100010000100000100000010000...
PFA advantages• Fast acting and very efficient• Kills microbes within a very short contact time, leaving formic acid andwa...
Case story: Lucart PM 7• Located in Borgo a Mozzano, Toscana, Italy• PM7 is a high speed (on average 1900 m/min) crescent ...
PFA equipmentHydrogen PeroxideFENNOSPEC 7810FENNOSAN PFAPREPARATION UNITINSTALLATION AT LUCART PM7• Tailor made for accura...
Lucart PM7 results (1)Microbial level clearly lower than during previous treatment!Jaakko Ekman & James Atkinson 810010001...
• Machine efficiency significantly improved, including anew production record• Felt life-time has increased 50 % (from 70 ...
Experiences from other mill casesMill A:• 60 – 70 % less breaks during PFA treatment than beforeduring Monochloramine (AmB...
Experiences from other mill casesMill B:• Earlier with organic biocides, the mill had problems withtoxic traces in end pro...
ConclusionsPFA is a green sterilizing agent for tissue machines withseveral benefits:• Efficient microbe control → clean m...
Disclaimer:Performic Acid (PFA) is currently not registered as a pesticidein the USA or Canada and thus it is not availabl...
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Added value for tissue makers created by efficient chlorine free microbe control program

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Kemira performic acid (PFA) chemistry is a halogen-free biocide program that is highly effective against primary-biofilm forming bacteria. PFA is a reaction product of formic acid and hydrogen peroxide, and its biocidal activity is based on active oxygen. PFA is thus halogen-free, corrosion safe and also fully biodegradable. This highly efficient biocide improves paper machine cleanliness while, at the same time, it does not generate any persistent AOX compounds in waste water that could be harmful for the environment. PFA also leaves no biocidal residuals in the paper product, making it safe for end users and the environment. Lucart PM 7 in Borgo a Mozzano, Toscana, Italy gained several advantages by using PFA, including improved machine efficiency and increased felt life-time.

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Added value for tissue makers created by efficient chlorine free microbe control program

  1. 1. Added value for tissue makers created byefficient chlorine-free microbe control programJaakko Ekman, Roberto Zulian, James Atkinson, Jordi Sanchez, Marko Kolari,Amerigo Salvetti (LucartGroup) and Juha Rintala
  2. 2. Content• Introduction to Performic Acid (PFA) technology• Case story from Lucart PM 7 in Italy• Experiences from other mill cases• ConclusionsJaakko Ekman & James Atkinson 2
  3. 3. Performic acid (PFA) chemistry• Produced on-site from formic acidand hydrogen peroxideHCOOH + H2O2 → HCOOOH + H2O• PFA product is never pure Performicacid, it is always an equilibriumsolution containing Performic Acid,Formic acid and Hydrogen Peroxide• PFA has a short life-time, thus it cannot be stored or transportedJaakko Ekman & James Atkinson 3
  4. 4. PFA is a green disinfection agent withvery high performanceJaakko Ekman & James Atkinson 4101001000100001000001000000100000000 2 4 6 8 10 12 14 16Amountofviablebacteria,cfu/mlBiocide dose, ppm active substanceEfficiency of Performic acid vs. Peracetic acid in PaperMill WaterPeracetic acidPerformic acid
  5. 5. PFA advantages• Fast acting and very efficient• Kills microbes within a very short contact time, leaving formic acid andwater as intermittent residuals Fully biodegradable to H2O and CO2• Free of chlorine and bromine• Less corrosive ions in the white water system• No AOX released to environment• Safer for process surfaces, workers and environment• No toxic traces or dangerous disinfection by-products• No corrosionJaakko Ekman & James Atkinson 5
  6. 6. Case story: Lucart PM 7• Located in Borgo a Mozzano, Toscana, Italy• PM7 is a high speed (on average 1900 m/min) crescent former machineproducing premium bathroom tissue and wet strength grades• Production: about 70 000 t/year, grammage 15 – 24 g/m2• Raw material: 100 % virgin fiber• Water usage: 5 to 8 m3/t• PFA replaced organic biocide program at the beginning of July 2012• Current program design Continuously to fresh water; Clarified water; Wire pit• In addition, organic biocide is used for sludge treatmentJaakko Ekman & James Atkinson 6
  7. 7. PFA equipmentHydrogen PeroxideFENNOSPEC 7810FENNOSAN PFAPREPARATION UNITINSTALLATION AT LUCART PM7• Tailor made for accurate and safe dosing• Automated and easy to useJaakko Ekman & James Atkinson
  8. 8. Lucart PM7 results (1)Microbial level clearly lower than during previous treatment!Jaakko Ekman & James Atkinson 81001000100001000001000000SoftwoodpulpHardwoodpulpWhitewaterDAF ClarifiedwaterPulperwaterFreshwaterATP(RLU)PrevioustreatmentKemira I (13.7. -17.8.2012)Kemira II (20.8. -4.9.2012)Kemira III (6.9. -27.9.2012)Kemira IV (2.10. -11.10.2012)
  9. 9. • Machine efficiency significantly improved, including anew production record• Felt life-time has increased 50 % (from 70 - 90 days to180 days)• PFA reacts less with other additives than previous biocideprogram• Program works effectively by treating waters only• Competitive cost versus competitionJaakko Ekman & James Atkinson 9Lucart PM7 results (2)
  10. 10. Experiences from other mill casesMill A:• 60 – 70 % less breaks during PFA treatment than beforeduring Monochloramine (AmBr) treatment• Visibly much cleaner machine• Longer felt life: earlier 120 d, now more than 200 d• Better retention, confirmed by lower consistency of whitewaterJaakko Ekman & James Atkinson 10
  11. 11. Experiences from other mill casesMill B:• Earlier with organic biocides, the mill had problems withtoxic traces in end product. After PFA treatment started, notoxic end-product has been found• Better working environment: Less bacteria in spraywaters, no biocide smells, no anaerobic bacteria because ofthe higher redox level• No corrosion problems during two years of PFA treatment• Productivity has increased (also other factors involved)• Better felt performanceJaakko Ekman & James Atkinson 11
  12. 12. ConclusionsPFA is a green sterilizing agent for tissue machines withseveral benefits:• Efficient microbe control → clean machine, excellentrunnability• Safe program for both environment and operators• Completely biodegradable → no toxic traces in end productor waste water – No AOX generation• Longer felt life → additional savings• Not corrosive → less maintenance costsJaakko Ekman & James Atkinson 12
  13. 13. Disclaimer:Performic Acid (PFA) is currently not registered as a pesticidein the USA or Canada and thus it is not available for sale ineither country. This presentation is for informational purposesonly and is not an offer for sale.Jaakko Ekman & James Atkinson 13

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