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NEWPORTSanta Croce sull’Arno - Pisa (Italy)22nd October 2015

Mercedes RoigINESCOP

LIFE 13 ENV/IT/470

Environmentally friendly natural products instead of chemical

products in the degreasing phase of the tanning cycle

LIFE - EcoDefatting

INESCOP PROJECT PROGRESS

12 Months Progress Meeting

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Tasks carried out by INESCOP (Feb – Sep’15)

ACTION DATE B1. Demonstration of natural products in the defatting phase at laboratory level Feb – Sep’15

C2. Environmental monitoring of defatting with natural products at laboratory level Feb – Sep’15

B2. Defatting at a semi-industrial level by usingnatural products Jun – Sep’15

C3. Environmental monitoring of defatting with natural products at semi-industrial level Jun – Sep’15

D. Communication and dissemination actions ContinuosE1. Project management Continuos

B1. Demonstration of natural products in the defatting phase at laboratory level

Objectives: – Obtain leathers defatted with last

EcoDefatting products sintetized by UNIFI (EDF19 - EDF24)

Tasks:– Definition of the leather defatting

process: depickling, defatting, pickling and tanning

– Defatting test with last EcoDefatting products at laboratory level (EDF19 - EDF24)

Test & ResultS & control sheet

Trials with EcoDefatting productsEcoDefatting products tested:

EDF 19 to EDF 24

Defatting procedure Stage % Product l // g °C Rotation pH Remarks

De-picking 1000 Water 0 2010 Salt 0 30' 8 º Bé3 Sodium Bicarbonat 0 180' > 6 Check pH

Defatting 1000 Water 0 3510 Salt 0 15' 8 º Bé

1000 Water 0 3510 Salt 0 10' 8 º Bé5 Defatting agent 0 60'

1000 Water 0 3510 Salt 0 15' 8 º Bé

1000 Water 0 3010 Salt 0 15' 8 º Bé

1000 Water 0 2510 Salt 0 15' 8 º Bé

600 Water 0 2010 Salt 0 10’ 6-7 º Bé0,8 Sulphuric acid 1:10 0 30'0,8 Formic acid 1:5 0 10' 2,8 - 3,0 Check pH6 Chromium salt 0 60'

1,2 Oxido magnesio 0 Check pH = 40,1 Fungicida 0 20'

Drain

Drain

Drain - Sample of residual bath for wastewater analysis

Drain

Drain

Drain

Picking Tanning

Noche automático

Drain

Defatting results: fat removed from skins

Fat removed from skin (%)

30,4

2,2

13,0

57,8

21,7

61,3

17,4

4,3

57,0

19,1

52,6

34,3

22,622,028,330,2

22,015,6

33,3

50,0

25,0

60,4

71,7

54,745,3

80,2

25,919,8

2,70,0

10,0

20,0

30,0

40,0

50,0

60,0

70,0

80,0

90,0

COM 1

COM 2

COM 3

COM 4ED

F 1ED

F 2ED

F 3ED

F 4ED

F 5ED

F 6ED

F 7ED

F 8ED

F 9

EDF 1

0

EDF 1

1

EDF 1

2

EDF 1

3

EDF 1

4

EDF 1

5

EDF 1

6

EDF 1

7

EDF 1

8

EDF 1

9

EDF 2

0

EDF 2

1

EDF 2

2

EDF 2

3

EDF 2

4

EDF 2

5

Tear strenght (N)

0102030405060708090

100

COM

1COM

2CO

M 3

COM

4ED

F 1ED

F 2ED

F 3ED

F 4ED

F 5ED

F 6ED

F 7ED

F 8ED

F 9ED

F 10

EDF 1

1ED

F 12

EDF 1

3ED

F 14

EDF 1

5ED

F 16

EDF 1

7ED

F 18

EDF 1

9ED

F 20

EDF 2

1ED

F 22

EDF 2

3ED

F 24

EDF 2

5

Defatting results: physical properties (I)

Defatting results: physical properties (II)

Tensile strenght (N/mm2)

0

5

10

15

20

25

30

COM 1

COM 2

COM 3

COM 4ED

F 1ED

F 2ED

F 3ED

F 4ED

F 5ED

F 6ED

F 7ED

F 8ED

F 9

EDF 1

0

EDF 1

1

EDF 1

2

EDF 1

3

EDF 1

4

EDF 1

5

EDF 1

6

EDF 1

7

EDF 1

8

EDF 1

9

EDF 2

0

EDF 2

1

EDF 2

2

EDF 2

3

EDF 2

4

EDF 2

5

C2. Monitoring of the environmental impact at laboratory level

Objective: Quantify and evaluate the environmental impact of

defatting residual baths from commercial and natural products (EDF1-EDF25)

Tasks:Chemical analysis of defatting residual baths by means of

standard methods: COD, BOD and biodegradability

Responsible: INESCOP

COD results

COD (mg/l)

0

2.000

4.000

6.000

8.000

10.000

12.000

14.000

16.000

BOD results

BOD (mg/l)

0

5001000

15002000

2500

30003500

4000

COM 1

COM 2

COM 3

COM 4ED

F 1ED

F 2ED

F 3ED

F 4ED

F 5ED

F 6ED

F 7ED

F 8ED

F 9

EDF 1

0

EDF 1

1

EDF 1

2

EDF 1

3

EDF 1

4

EDF 1

5

EDF 1

6

EDF 1

7

EDF 1

8

EDF 1

9

EDF 2

0

EDF 2

1

EDF 2

2

EDF 2

3

EDF 2

4

EDF 2

5

Biodegradability (BOD/COD)

0,00

0,10

0,20

0,30

0,40

0,50

0,60

0,70

0,80

0,90

1,00

COM 1

COM 2

COM 3

COM 4ED

F 1ED

F 2ED

F 3ED

F 4ED

F 5ED

F 6ED

F 7ED

F 8ED

F 9

EDF 1

0

EDF 1

1

EDF 1

2

EDF 1

3

EDF 1

4

EDF 1

5

EDF 1

6

EDF 1

7

EDF 1

8

EDF 1

9

EDF 2

0

EDF 2

1

EDF 2

2

EDF 2

3

EDF 2

4

EDF 2

5

Biodegradability results

Tasks:- Definition of the leather defatting process: depickling, defatting, pickling and tanning - Perform defatting test on pickled sheep-skins at semi-industrial level with the selected product (EDF20), - Evaluate the effectiveness of the product in different quantities (2, 3, 4 and 5% on weight of skin inside the tanning drum)

Objectives: - To obtain leathers defatted at semi-industrial

levelwith the product selected as optimum (EDF20)

Action B.2: Defatting at semi-industrial level by using natural products

Fat removed from skins (%)

30,4

2,2

13,0

57,854,7

32,1 30,8

50,055,8

0,0

10,0

20,0

30,0

40,0

50,0

60,0

70,0

COM 1 COM 2 COM 3 COM 4 EDF 20 EDF 20_2% EDF 20_3% EDF 20_4% EDF 20_5%

Defatting results: fat removed from skins

Defatting results: physical properties (I)

Tear strenght (N)

47,3 43,9 45,7 46,2 48,3

61,1 59,4 62,5 63

0

10

20

30

40

50

60

70

80

90

100

COM 1 COM 2 COM 3 COM 4 EDF 20 EDF 20_2% EDF 20_3% EDF 20_4% EDF 20_5%

Defatting results: physical properties (II)

Tensile strenght (N/mm2)

14,3 15,2 14,6 14,9 14,215,4 15,9 16,3 15,7

0

5

10

15

20

25

30

COM 1 COM 2 COM 3 COM 4 EDF 20 EDF 20_2% EDF 20_3% EDF 20_4% EDF 20_5%

C3. Monitoring of the environmental impact at semi-industrial level

Objective: Quantify and evaluate the environmental impact of

defatting stage with the product selected as optimum (EDF20) in different quantities (2, 3, 4 and 5% on weight of skin)

Tasks:Chemical analysis of defatting residual baths by means of

standard methods: COD, BOD and biodegradability

Responsible: INESCOP

Biodegradability results

Biodegradability (BOD/COD)

0,36

0,50

0,23

0,44

0,18 0,15

0,31 0,310,22

0,000,100,200,300,400,500,600,700,800,901,00

COM 1 COM 2 COM 3 COM 4 EDF 20 EDF 20_2% EDF 20_3% EDF 20_4% EDF 20_5%

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Next steps

ACTIONB2. Defatting at semi-industrial level by using natural productsC3. Environmental monitoring of defatting with natural products at semi-industrial levelB3. Demonstration of natural products defatting at a pre-industrial levelC3. Environmental monitoring of defatting with natural products at pre-industrial levelD. Communication and dissemination actionsE1. Project management

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Thanks for your attention