Materials obtained from End-of-Life Tyres - Odour of ELT granulates - Origin and remediation possibilities

The purpose of this Technical Report is to provide a review of the studies that were performed on odour of ELT granulates

Materialien aus Altreifen - Geruch von ELT-Granulaten - Ursprungs- und Sanierungsmöglichkeiten

Matériaux produits à partir de pneus usagés non réutilisables (PUNR) - Odeur des granulats - Origine et possibilités de remédiation

Le présent document a pour objet de fournir une revue des études qui ont été menées sur l'odeur des granulats.

Materiali, pridobljeni iz izrabljenih avtomobilskih gum - Vonj granulatov ELT - Vir in možnosti sanacije

General Information

Status
Published
Public Enquiry End Date
31-May-2020
Publication Date
26-Jul-2020
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
20-Jul-2020
Due Date
24-Sep-2020
Completion Date
27-Jul-2020

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SLOVENSKI STANDARD
SIST-TP CEN/TR 17511:2020
01-oktober-2020

Materiali, pridobljeni iz izrabljenih avtomobilskih gum - Vonj granulatov ELT - Vir in

možnosti sanacije
Materials obtained from End-of-Life Tyres - Odour of ELT granulates - Origin and
remediation possibilities
Materialien aus Altreifen - Geruch von ELT-Granulaten - Ursprungs- und
Sanierungsmöglichkeiten
Matériaux produits à partir de pneus usagés non réutilisables (PUNR) - Odeur des
granulats - Origine et possibilités de remédiation
Ta slovenski standard je istoveten z: CEN/TR 17511:2020
ICS:
13.030.50 Recikliranje Recycling
83.160.01 Avtomobilske pnevmatike na Tyres in general
splošno
SIST-TP CEN/TR 17511:2020 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST-TP CEN/TR 17511:2020
---------------------- Page: 2 ----------------------
SIST-TP CEN/TR 17511:2020
CEN/TR 17511
TECHNICAL REPORT
RAPPORT TECHNIQUE
July 2020
TECHNISCHER BERICHT
ICS 13.160
English Version
Materials obtained from End-of-Life Tyres - Odour of ELT
granulates - Origin and remediation possibilities

Matériaux produits à partir de pneus usagés non Materialien aus Altreifen - Geruch von ELT-Granulaten

réutilisables (PUNR) - Odeur des granulats - Origine et - Ursprungs- und Sanierungsmöglichkeiten

possibilités de remédiation

This Technical Report was approved by CEN on 22 June 2020. It has been drawn up by the Technical Committee CEN/TC 366.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TR 17511:2020 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST-TP CEN/TR 17511:2020
CEN/TR 17511:2020 (E)
Contents Page

European foreword ......................................................................................................................................................... 3

Introduction ....................................................................................................................................................................... 4

1 Scope ...................................................................................................................................................................... 5

2 Normative references ...................................................................................................................................... 5

3 Terms, definitions and symbols ................................................................................................................... 5

3.1 Terms and definitions ....................................................................................................................................................... 5

3.2 Symbols and abbreviated terms ................................................................................................................................... 5

4 Determination of the intensity ..................................................................................................................... 5

4.1 Methods ................................................................................................................................................................................... 5

5 Origin of the odour ............................................................................................................................................ 6

5.1 General ..................................................................................................................................................................................... 6

5.2 At room temperature ......................................................................................................................................................... 6

5.2.1 Description of the study ......................................................................................................................................... 6

5.2.2 Measured intensities for granulates ................................................................................................................. 6

5.2.3 Odour and molecular origin ................................................................................................................................. 7

5.3 At higher temperature ...................................................................................................................................................... 8

5.3.1 Description of the study ......................................................................................................................................... 8

5.3.2 Measured intensities for granulates ................................................................................................................. 8

5.3.3 Odour and molecular origin ................................................................................................................................. 8

6 Remediation possibilities ............................................................................................................................... 9

7 Conclusion and recommendations .............................................................................................................. 9

Bibliography ................................................................................................................................................................... 10

---------------------- Page: 4 ----------------------
SIST-TP CEN/TR 17511:2020
CEN/TR 17511:2020 (E)
European foreword

This document (CEN/TR 17511:2020) has been prepared by Technical Committee CEN/TC 366 “Materials

obtained from End-of-Life Tyres (ELT)”, the secretariat of which is held by UNI.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

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SIST-TP CEN/TR 17511:2020
CEN/TR 17511:2020 (E)
Introduction

The odour of ELTs granulates can be an obstacle to their use. This is particularly critical at high

temperatures, e.g. in the case of a plastic injection.

In order to solve this problem, the origin of the odour is identified to the extent that this is possible. Then

it is quantified under normal conditions of use or at higher temperatures.

The identification of the exact origin of the odour would allow the possibility of reducing or eliminating it.

---------------------- Page: 6 ----------------------
SIST-TP CEN/TR 17511:2020
CEN/TR 17511:2020 (E)
1 Scope

The purpose of this document is to provide a review of the studies that were performed on odour of ELT

granulates.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

EN 14243-1, Materials obtained from end of life tyres — Part 1: General definitions related to the methods

for determining their dimension(s) and impurities
3 Terms, definitions and symbols
3.1 Terms and definitions

For the purposes of this document, the terms and definitions given in EN 14243-1 apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at http://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
3.2 Symbols and abbreviated terms
For the purposes of this part, the following symbols apply.
VOC Volatile Organic Compound
NR Natural Rubber
4 Determination of the intensity
4.1 Methods

In a first study [3], granulates from six different suppliers were used. The techniques that were assessed

for the determination of the intensity of the odour were the following:

— Renault D49-3001: this is one of the standardized tests for odour and smell that are commonly used

by the automotive industry. In this method, the samples in solid form are placed in a sealed container

between 70 °C and 100 °C during 2 h. A jury of at least five trained panellists then gives an intensity

on a scale from 1 to 5. The nature of the smell is then placed in a family. The scale is defined as:

— 0: no perceptible odour;
— 1: weak odour, demanding extra attention and hard to describe;
— 2: the subject perceives by simple smelling, without any other information;
— 3: odour perceived even when the attention of the subject is elsewhere;

— 4: powerful odour attracting the attention of the subject and hindering his other activities;

— 5: unavoidable odour, focusing the attention of the subject.
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SIST-TP CEN/TR 17511:2020
CEN/TR 17511:2020 (E)

— Dynamic olfactometry: this is also a human-based method. The odour is diluted with a neutral gas

until it is not detected by the panellist anymore. This gives a threshold concentration.

— Hedonic test: this is also a human-based method, to assess if the odour is pleasant or not.

— GC-MS olfaction test: this is a mixed human/machine method.
...

SLOVENSKI STANDARD
kSIST-TP FprCEN/TR 17511:2020
01-junij-2020

Materiali, pridobljeni iz izrabljenih avtomobilskih gum - Vonj granulatov ELT - Vir in

možnosti sanacije
Materials obtained from End-of-Life Tyres - Odour of ELT granulates - Origin and
remediation possibilities
Materialien aus Altreifen - Geruch von ELT-Granulaten - Ursprungs- und
Sanierungsmöglichkeiten
Matériaux produits à partir de pneus usagés non réutilisables (PUNR) - Odeur des
granulats - Origine et possibilités de remédiation
Ta slovenski standard je istoveten z: FprCEN/TR 17511
ICS:
83.160.01 Avtomobilske pnevmatike na Tyres in general
splošno
kSIST-TP FprCEN/TR 17511:2020 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
kSIST-TP FprCEN/TR 17511:2020
---------------------- Page: 2 ----------------------
kSIST-TP FprCEN/TR 17511:2020
FINAL DRAFT
TECHNICAL REPORT
FprCEN/TR 17511
RAPPORT TECHNIQUE
TECHNISCHER BERICHT
February 2020
ICS
English Version
Materials obtained from End-of-Life Tyres - Odour of ELT
granulates - Origin and remediation possibilities
Materialien aus Altreifen - Geruch von ELT-Granulaten
- Ursprungs- und Sanierungsmöglichkeiten

This draft Technical Report is submitted to CEN members for Vote. It has been drawn up by the Technical Committee CEN/TC

366.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are

aware and to provide supporting documentation.

Warning : This document is not a Technical Report. It is distributed for review and comments. It is subject to change without

notice and shall not be referred to as a Technical Report.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. FprCEN/TR 17511:2020 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
kSIST-TP FprCEN/TR 17511:2020
FprCEN/TR 17511:2020 (E)
Contents Page

European foreword ......................................................................................................................................................... 3

Introduction ....................................................................................................................................................................... 4

1 Scope ...................................................................................................................................................................... 5

2 Normative references ...................................................................................................................................... 5

3 Terms, definitions and symbols ................................................................................................................... 5

3.1 Terms and definitions ....................................................................................................................................................... 5

3.2 Symbols and abbreviated terms ................................................................................................................................... 5

4 Determination of the intensity ..................................................................................................................... 5

4.1 Methods ................................................................................................................................................................................... 5

5 Origin of the odour ............................................................................................................................................ 6

5.1 General ..................................................................................................................................................................................... 6

5.2 At room temperature ......................................................................................................................................................... 6

5.2.1 Description of the study ......................................................................................................................................... 6

5.2.2 Measured intensities for granulates ................................................................................................................. 6

5.2.3 Odour and molecular origin ................................................................................................................................. 7

5.3 At higher temperature ...................................................................................................................................................... 8

5.3.1 Description of the study ......................................................................................................................................... 8

5.3.2 Measured intensities for granulates ................................................................................................................. 8

5.3.3 Odour and molecular origin ................................................................................................................................. 8

6 Remediation possibilities ............................................................................................................................... 9

7 Conclusion and recommendations .............................................................................................................. 9

Bibliography ................................................................................................................................................................... 10

---------------------- Page: 4 ----------------------
kSIST-TP FprCEN/TR 17511:2020
FprCEN/TR 17511:2020 (E)
European foreword

This document (FprCEN/TR 17511:2020) has been prepared by Technical Committee CEN/TC 366

“Materials obtained from End-of-Life Tyres (ELT)”, the secretariat of which is held by UNI.

This document is currently submitted to the Vote on TR.
---------------------- Page: 5 ----------------------
kSIST-TP FprCEN/TR 17511:2020
FprCEN/TR 17511:2020 (E)
Introduction

The odour of ELTs granulates can be an obstacle to their use. This is particularly critical at high

temperatures, e.g. in the case of a plastic injection.

In order to solve this problem, the origin of the odour is identified to the extent that this is possible. Then

it is quantified under normal conditions of use or at higher temperatures.

The identification of the exact origin of the odour would allow the possibility of reducing or eliminating it.

---------------------- Page: 6 ----------------------
kSIST-TP FprCEN/TR 17511:2020
FprCEN/TR 17511:2020 (E)
1 Scope

The purpose of this document is to provide a review of the studies that were performed on odour of ELT

granulates.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

EN 14243-1, Materials obtained from end of life tyres — Part 1: General definitions related to the methods

for determining their dimension(s) and impurities
3 Terms, definitions and symbols
3.1 Terms and definitions

For the purposes of this document, the terms and definitions given in EN 14243-1 apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at http://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
3.2 Symbols and abbreviated terms
For the purposes of this part, the following symbols apply.
VOC Volatile Organic Compound
NR Natural Rubber
4 Determination of the intensity
4.1 Methods

In a first study [3], granulates from six different suppliers were used. The techniques that were assessed

for the determination of the intensity of the odour were the following:

— Renault D49-3001: this is one of the standardized tests for odour and smell that are commonly used

by the automotive industry. In this method, the samples in solid form are placed in a sealed container

between 70 °C and 100 °C during 2 h. A jury of at least five trained panellists then gives an intensity

on a scale from 1 to 5. The nature of the smell is then placed in a family. The scale is defined as:

— 0: no perceptible odour;
— 1: weak odour, demanding extra attention and hard to describe;
— 2: the subject perceives by simple smelling, without any other information;
— 3: odour perceived even when the attention of the subject is elsewhere;

— 4: powerful odour attracting the attention of the subject and hindering his other activities;

— 5: unavoidable odour, focusing the attention of the subject.
---------------------- Page: 7 ----------------------
kSIST-TP FprCEN/TR 17511:2020
FprCEN/TR 17511:2020 (E)

— Dynamic olfactometry: this is also a human-based method. The odour is diluted with a neutral gas

until it is not detected by the panellist anymore. This gives a threshold concentration.

— Hedonic test: this is also a human-based method, to assess if the odour is pleasant or not.

— GC-MS o
...

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