Detergent updateDetergent update

David GleesonDavid Gleeson

Moorepark Milk Quality Workshop 2011

IntroductionIntroduction

Detergent product listDetergent product list

Cleaning system experiments at Cleaning system experiments at MooreparkMoorepark

Operational costs of different Operational costs of different cleaning systemscleaning systems

Detergent listsDetergent lists Product lists updated for Mar 2011Product lists updated for Mar 2011

– Moorepark website-PDF formatMoorepark website-PDF format(www.teagasc. ie ) (www.teagasc. ie ) linklink-research & innovation/dairy) -research & innovation/dairy)

– Separate table for liquid caustic only productsSeparate table for liquid caustic only products

– List: 41 liquid detergent sterilizer & 8 liquid List: 41 liquid detergent sterilizer & 8 liquid detergent products, 25 powder products (5 detergent products, 25 powder products (5 contain chlorine) & 12 liquid sterilizer productscontain chlorine) & 12 liquid sterilizer products

– 7 brands reformulated with higher spec7 brands reformulated with higher spec

– Only 32% of liquid detergent-sterilizer or sterilizer Only 32% of liquid detergent-sterilizer or sterilizer products are registered with DAFF (Jan/11) – PCS products are registered with DAFF (Jan/11) – PCS number-new columnnumber-new column

– (www.pcs.agriculture.gov.ie/biocidalproductregisterJanuary2011.pdf(www.pcs.agriculture.gov.ie/biocidalproductregisterJanuary2011.pdf

Important points in relation to detergent sterilizersImportant points in relation to detergent sterilizers A A minimumminimum of 800 ppm in the working solution is of 800 ppm in the working solution is

suggested for detergent sterilizers where the product is suggested for detergent sterilizers where the product is recycled and when hot wash is not used at each milkingrecycled and when hot wash is not used at each milking– Most popular washing system used in IrelandMost popular washing system used in Ireland

(e.g. 10% caustic @ 360mls/45 litres = 800 ppm (e.g. 10% caustic @ 360mls/45 litres = 800 ppm or 18% caustic @200 mls/45 litres =800 ppm) or 18% caustic @200 mls/45 litres =800 ppm)

Detergents with a lower working solution Detergents with a lower working solution (< 800ppm)(< 800ppm) should should give satisfactory cleaning when used with hot water daily give satisfactory cleaning when used with hot water daily and not recycledand not recycled

Increasing the usage rate of detergent-sterilizer products Increasing the usage rate of detergent-sterilizer products to achieve higher caustic levels may result in non-to achieve higher caustic levels may result in non-acceptable levels of chlorine in the working solutionacceptable levels of chlorine in the working solution

Acceptable chlorine levels in the working solution may Acceptable chlorine levels in the working solution may range between 150 and 320 ppm depending on water temp range between 150 and 320 ppm depending on water temp

(e.g. 3.5% chlorine@ 360mls/45L =280 ppm(e.g. 3.5% chlorine@ 360mls/45L =280 ppm or 4.% chlorine @ 360 mls/45L =320 ppm)or 4.% chlorine @ 360 mls/45L =320 ppm)

Chemical analyses of detergentsChemical analyses of detergents

Caustic range for detergent-sterilizers:Caustic range for detergent-sterilizers:– < 1 to 19 %< 1 to 19 %– 59% of products with caustic levels 59% of products with caustic levels

below 10%below 10%

Chlorine range:Chlorine range:– <1 to 9.5%<1 to 9.5%– 34% above 4.0%34% above 4.0%

Important points in relation to powder detergent productsImportant points in relation to powder detergent products

A number of powder products contain acceptable levels of A number of powder products contain acceptable levels of chlorine (20%)chlorine (20%)

Working solutions for cold caustic cleaning greater than Working solutions for cold caustic cleaning greater than 2000ppm are recommended – lower WS when chlorine is present 2000ppm are recommended – lower WS when chlorine is present (800PPM)(800PPM)

A small number of powder products are recommended to be used A small number of powder products are recommended to be used as hot wash only (these may also be used at lower working as hot wash only (these may also be used at lower working solutions)solutions)

Some products contain high levels of sodium carbonate while Some products contain high levels of sodium carbonate while other products other products contain high levels of non caustic alkaline contain high levels of non caustic alkaline detergents which have additional cleaning benefits.detergents which have additional cleaning benefits.

The usage rates of caustic only powder products may be increased The usage rates of caustic only powder products may be increased to increase the working solutionto increase the working solution

It is considered that all powder products analysed contain It is considered that all powder products analysed contain adequate caustic levelsadequate caustic levels

Caustic content in liquid detergent products on Caustic content in liquid detergent products on the Irish market (March, 2011)the Irish market (March, 2011)

ProductProduct % Caustic% Caustic

w/ww/w W.S*W.S*

Hot washHot washW.S*W.S*

Cold WashCold Wash

Timac CIPTimac CIP 28.0828.08 17471747 24962496

P3-mip CIP P3-mip CIP 27.727.7 18481848 27722772

Multisan CF** Multisan CF** 25.425.4 16951695 25422542

Parlosan NC** Parlosan NC** 24.324.3 16231623 27042704

Quantum x L Quantum x L 22.322.3 558558 XX

Alkadex Forte Alkadex Forte 20.620.6 10281028 XX

Hypral SP Hypral SP 15.915.9 10591059 xx

SanagardSanagard 10.510.5 524524 xx

* Working solutions are calculated based on manufactures recommended usage rates and % caustic measured in products ●** The addition of hydrogen peroxide to these products is recommended by manufacturers

Cleaning systems trialCleaning systems trial 7 washing systems evaluated7 washing systems evaluated 3 week period on each of 3 farms 3 week period on each of 3 farms (June –Nov)(June –Nov)

Auto-washer calibrated for each productAuto-washer calibrated for each product No re-cycling of detergent for second daily No re-cycling of detergent for second daily

washwash

Measurements includedMeasurements included– TBC (n=1,800) & Thermodurics(n=800) for milk TBC (n=1,800) & Thermodurics(n=800) for milk

line & bulk tank milkline & bulk tank milk– TCM for milk lineTCM for milk line– Bacterial swabbing: start of wk 1 and end of wk 3Bacterial swabbing: start of wk 1 and end of wk 3

claw pieces claw pieces liners liners stainless steelstainless steel

Cleaning systems evaluatedCleaning systems evaluatedPRODUCTPRODUCT W.SW.S

CausticCaustic

ppmppm

WaterWater

temptempUsage Usage raterate

mls/45Lmls/45L

Add. Add. productproduct

Once wkOnce wk

AcidAcid

DescaleDescale

11 P3-mipCIPP3-mipCIP 2,7722,772 coldcold 450450 weeklyweekly

22 P3-mipCIPP3-mipCIP 1,8481,848 hothot 300300 chlorinechlorine weeklyweekly

33 P3-mipCIPP3-mipCIP 2,7722,772 Cold/hotCold/hot 450450 dailydaily

44 Hypral SPHypral SP 1,0591,059 hothot 300300 weeklyweekly

55 Liquid GoldLiquid Gold 797797 hothot 250250 weeklyweekly

66 Multisan CFMultisan CF 2,5422,542 coldcold 450450 hydrogen hydrogen peroxideperoxide

weeklyweekly

77 Parlosan NCParlosan NC 2,7042,704 coldcold 500500 hydrogen hydrogen peroxideperoxide

weeklyweekly

Summary of resultsSummary of results

TreatmentTreatmentTBCTBC

(average)(average)ThermoduricsThermodurics

(average)(average)Tank TBCTank TBC

(24hr) (24hr) (average)(average)

Tank Tank ThermoduricsThermodurics

(average)(average)

P3-mipCIPP3-mipCIPcold

2,1812,181(410-6700)(410-6700)

9292

(0-2,700)(0-2,700)14,24714,247 161161

P3-mipCIPP3-mipCIPhot/chlorine

2,1662,166(190-7,200)(190-7,200)

6767

(0-790)(0-790)12,81412,814 6969

P3-mipCIP-coldP3-mipCIP-coldacid-hot

1,2521,252(180-3,500)(180-3,500)

3939

(0-360)(0-360)6,8566,856 5959

Hypral SPhot

2,1732,173(110-7,100)(110-7,100)

112112

(0-790)(0-790)8,1658,165 140140

Liquid Goldhot

2,0102,010(210-4,300)(210-4,300)

9090

(0-610)(0-610)5,8645,864 8686

Multisan CFcold/hp

1,9561,956(400-6,300)(400-6,300)

104104

(0-2,600)(0-2,600)11,43711,437 252252

Parlosan NCcold/hp

2,0192,019(230-9,400)(230-9,400)

123123

(0-720)(0-720)13,63513,635 205205

Bacterial numbers on milk liners Bacterial numbers on milk liners and stainless steeland stainless steel

Low bacterial numbers observed on Low bacterial numbers observed on stainless steel & milk linersstainless steel & milk liners

No significant difference for any washing No significant difference for any washing system at wk 3 compared to wk 1system at wk 3 compared to wk 1

SS, wk1= 100cfu, wk3= 200cfuSS, wk1= 100cfu, wk3= 200cfu

Liners, wk1=100cfu, wk3= 140cfuLiners, wk1=100cfu, wk3= 140cfu

Increase in bacterial numbers observed Increase in bacterial numbers observed on ‘plastic’ from week 1 to week 3on ‘plastic’ from week 1 to week 3

  Week 1 Week 3 sig

P3-mipCIP-P3-mipCIP-coldcold 13,000 39,000 < 0.01

P3-mipCIP-P3-mipCIP-hot/chlorinehot/chlorine 7,200 27,500 < 0.05

P3-mipCIP-P3-mipCIP-acidacid 17,000 16,500 NS

Hypral SP-Hypral SP-coldcold 52,000 70,000 NS

Liquid Gold-Liquid Gold-hothot 17,000 45,000 NS

Multisan CF-Multisan CF-coldcold 34,000 74,000 < 0.05

Parlosan NC-Parlosan NC-coldcold 59,000 280,000 < 0.01

Thermoduric Thermoduric categorycategory

00 10-2010-20 >20-40>20-40 50- 20050- 200 >200>200

No of No of samplessamples

174174 246246 308308 282282 137137

Average Average Thermoduric Thermoduric

countcount

00 1010 2828 9595 521521

TBCTBC 1,4631,463 1,7691,769 2,0342,034 2,2492,249 2,3782,378

Relationship between Thermoduric count and TBC

Milk samples taken during milking (no bulk tank samples included)

TreatmentTreatment

PPM-Chlorine in PPM-Chlorine in wash solutionwash solution

TCMTCM

P3-mipCIPP3-mipCIPcold 00 0.0000.000

P3-mipCIPP3-mipCIPhot/chlorine 00 0.0000.000

P3-mipCIPP3-mipCIPacid 00 0.0000.000

Hydral/hot 00 0.0000.000

Liquid Gold/hot 211211 0.0000.000

Multisan CF/cold/p 00 0.0000.000

Parlosan NC/cold/p 00 0.0000.000

Cost of cleaning productsCost of cleaning productsPRODUCTPRODUCT Price of Price of

productproduct

used in used in calculationscalculations

litreslitres

DescalerDescaler 5858 2525

P3-mipCIPP3-mipCIP 29.9529.95 2020

Boost/blastBoost/blast 12.512.5 55

Hypral SPHypral SP 6868 2222

Liquid GoldLiquid Gold 37.5037.50 2020

MultisanMultisan 2929 2020

ParlosanParlosan 3030 2020

ChlorasChloras 2121 2525

ESBESB €€/litre/litre

Night-rateNight-rate 0.0170.017

Day-rateDay-rate 0.00870.0087Source; John Upton

Cost of products may vary depending on the source and may be lower if large quantities are purchased

Weekly costs (Weekly costs (€) €) per unit associated with 9 per unit associated with 9 washing systemswashing systems

  detergent

chlorine Hydrogenperoxide

DescaleAcid

Hot water (night

Rate)

Total cost 10 unitsLactation

(NR)

Total cost10 unitsLactation

(DR)

P3mipCIPP3mipCIPcold 1.89 0.00 0.24 0.08 950 982

P3mipCIPP3mipCIPhot/ch 1.26 0.03 0.24 1.10 1128 1578

P3mipCIPP3mipCIPacid 0.94 0.00 1.70 0.55 1372 1597

Hypral SP/hot 2.04 0.00 0.24 1.10 1452 1902

Liquid Gold/hot 1.05 0.00 0.24 1.10 1028 1477

Multisan CF/c/p 1.83 0.07 0.24 0.16 990 1054

Parlosan NC/c/p 2.10 0.07 0.24 0.16 1104 1168

LiquidGold/h/c 1.44 0.00 0.24 0.63 993 1250

Liquid gold/h/rec 0.66 0.00 0.24 0.63 658 915

DiscussionDiscussion All cleaning systems gave satisfactory cleaning All cleaning systems gave satisfactory cleaning

performance performance when used as recommendedwhen used as recommended for the for the period tested-longer test time may be necessary period tested-longer test time may be necessary

New cold cleaning systems more expensive than New cold cleaning systems more expensive than existing Teagasc recommended cleaning systemexisting Teagasc recommended cleaning system (NR,10 (NR,10 units, year units, year €€658658 v v €€10141014))

Cold wash systems have similar running costs as Cold wash systems have similar running costs as twice-daily hot detergent sterilizer systems if using twice-daily hot detergent sterilizer systems if using NRNR ((10 units, year 10 units, year €€1014 1014 vv €€ 1028 1028) )

Lowest TBC & Thermoduric levels observed with Lowest TBC & Thermoduric levels observed with daily hot acid wash PM -but at a cost ! daily hot acid wash PM -but at a cost ! (NR, 10 units, year, (NR, 10 units, year, €€658 v 658 v €€13721372))

Could reduce the usage rate of Could reduce the usage rate of some some detergent detergent sterilizers if products have a high caustic content sterilizers if products have a high caustic content and if using hot water and not re-cyling solutionand if using hot water and not re-cyling solution

ConclusionsConclusions Increased occasions of acid cleaning and hot Increased occasions of acid cleaning and hot

water usage had the biggest impact on TBC & water usage had the biggest impact on TBC & ThermoduricsThermodurics

Cleaning systems had no impact on TCM Cleaning systems had no impact on TCM when used correctlywhen used correctly

Cold wash systemsCold wash systems– Longer term evaluation Longer term evaluation – Recycling of product not evaluatedRecycling of product not evaluated

Caution- Caustic only cold wash systems Caution- Caustic only cold wash systems require contact time to be effective – require contact time to be effective – suitability for bulk tank cleaning?suitability for bulk tank cleaning?

Future cleaning system studiesFuture cleaning system studies

Evaluation of re-cycling liquid hot/cold Evaluation of re-cycling liquid hot/cold wash detergent-sterilizers and detergent wash detergent-sterilizers and detergent only cleaning solutions on TBC, only cleaning solutions on TBC, Thermodurics & TCM residuesThermodurics & TCM residues

Evaluation of using disinfectant products Evaluation of using disinfectant products like peracetic acid in the final rinse waterlike peracetic acid in the final rinse water

Thank YouThank You