CEN/TS 15412:2010

SLOVENSKI STANDARD
01-september-2010
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SIST-TS CEN/TS 15412:2007
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Solid recovered fuels - Methods for the determination of metallic aluminium
Feste Sekundärbrennstoffe - Verfahren zur Bestimmung des Gehaltes an metallischem
Aluminium
Combustibles solides de récupération - Méthodes pour la détermination de l'aluminium
métal
Ta slovenski standard je istoveten z: CEN/TS 15412:2010
ICS:
75.160.10 Trda goriva Solid fuels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL SPECIFICATION
CEN/TS 15412
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
June 2010
ICS 75.160.10 Supersedes CEN/TS 15412:2006
English Version
Solid recovered fuels - Methods for the determination of metallic
aluminium
Combustibles solides de récupération - Méthode de Feste Sekundärbrennstoffe - Verfahren zur Bestimmung
détermination de l'aluminium total des Gehaltes an metallischem Aluminium
This Technical Specification (CEN/TS) was approved by CEN on 27 March 2010 for provisional application.

The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their
comments, particularly on the question whether the CEN/TS can be converted into a European Standard.

CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available
promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS)
until the final decision about the possible conversion of the CEN/TS into an EN is reached.

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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 15412:2010: E
worldwide for CEN national Members.

Contents Page
Foreword . 3
Introduction . 4
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Safety remarks . 5
5 Principle . 5
5.1 Method A. 5
5.2 Method B. 5
6 Apparatus . 5
6.1 Method A. 5
6.2 Method B . 6
7 Reagents . 6
7.1 General . 6
7.2 Method A. 6
7.3 Method B . 7
8 Preparation of the test sample . 7
9 Procedure . 7
9.1 Sample conservation and pre-treatment . 7
9.2 Sample preparation . 7
9.3 Method A. 8
9.3.1 General . 8
9.3.2 Leaching of lightly soluble aluminium compounds . 8
9.3.3 Dissolution of metallic aluminium . 8
9.4 Method B. 8
9.5 Determination of metallic aluminium . 8
9.5.1 Method A. 8
9.5.2 Method B. 8
10 Calculation and evaluation . 8
10.1 General . 8
10.2 Method A. 9
10.3 Method B. 9
11 Quality control . 9
12 Performance characteristics . 9
13 Test report . 9
Annex A (normative) Guidelines - Characteristics of the laboratory sample for chemical
analysis of SRF . 11

Foreword
This document (CEN/TS 15412:2010) has been prepared by Technical Committee CEN/TC 343 “Solid
Recovered Fuels”, the secretariat of which is held by SFS.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes CEN/TS 15412:2006.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to announce this Technical Specification: 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, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland and the United Kingdom.

Introduction
The metallic aluminium in solid recovered fuels is very problematic in combustion processes. Aluminium can
form deposit on heat transfer surfaces and superheaters. For these reasons a method for the determination
of total metallic aluminium is necessary. Other metals with low melting point such as tin, lead and zinc may
cause similar problems but their content in solid recovered fuels is usually very low and then their effect is
not significant.
1 Scope
This Technical Specification specifies two different methods for the determination of metallic aluminium in
solid recovered fuels:
 method a: dissolution of metallic aluminium and analysis by Inductively Coupled Plasma Optic Emission
Spectrometry (ICP-OES) or by Flame Atomic Absorption Spectrometry (FAAS);
 method b: Differential Thermal Analysis (DTA) on the solid SRF.
2 Normative references
The following referenced documents are indispensable for the application 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.
prEN 15357:2009, Solid recovered fuels — Terminology, definitions and descriptions
prEN 15403, Solid recovered fuels —Determination of the ash content
prEN 15413, Solid recovered fuels — Methods for the preparation of the test sample from the laboratory
sample
prEN 15414-3, Solid recovered fuels — Determination of moisture content using the oven dry method —
Part 3: Moisture in general analysis sample
EN ISO 3696:1995, Water for analytical laboratory use — Specification and test methods (ISO 3696:1987)
EN ISO 11885:2009, Water quality — Determination of selected elements by inductively coupled plasma
optical emission spectrometry (ICP-OES) (ISO 11885:2007)
EN ISO 12020:2000, Water quality — Determination of aluminium — Atomic absorption spectrometric
methods (ISO 12020:1997)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in prEN 15357:2009 and the following
apply.
3.1
metallic aluminium
aluminium that could be extract from SRF by using a 0,75 mol/l NaOH solution, after leaching with
0,14 mol/l HNO solution
NOTE This includes the metallic aluminium and some chemical forms of aluminium non-soluble in nitric acid but
easily soluble in alkaline media.
4 Safety remarks
The safety in handling of potentially hazardous materials is dealt with relevant national and European
regulations, which every laboratory should refer to.
In addition the following information is given:
 most of reagents used within this Technical Specification are strongly corrosive and toxic. Safety
precautions are absolutely necessary due to strong corrosive reagents at high temperature;
 the reaction of metallic aluminium (and other metals such as zinc, lead and tin) with NaOH solution
generates gaseous hydrogen that can form explosive mixtures in the air;
 all procedures have to be performed in a hood or in closed force-ventilated equipment. By the use of
strong oxidising reagents the formation of explosive organic intermediates is possible especially when
dealing with samples with a high organic content. Do not open pressurised vessels before they have
cooled down. Avoid contact with the chemicals and the gaseous reaction products.
5 Principle
5.1 Method A
The test portion of 1 mm maximum particle size is leached with 0,14 mol/l nitric acid solution and shaken.
After that the mixture is filtered. The elemental aluminium is digested by heating the sample with alkali. After
that the mixture is filtered and then the aluminium content is determined by ICP-OES or FAAS.
5.2 Method B
The test portion of 1 mm maximum particle size is ashed and then introduced with the proper program in the
DTA analyser and the DTA curve is recorded.
6 Apparatus
6.1 Method A
6.1.1 Balances
Analytical balance resolution ± 0,1 mg.
6.1.2 General laboratory equipment
Including volumetric graduated flasks and pipettes of adequate size; filter equipment of adequate chemical
resistance and purity or centrifuge. The use of glass ware shall be excluded when NaOH is used.
6.1.3 Shaking table
6.1.3 Hotplate
Resistance heated, with temperature regulation up to 120 °C.
6.1.4 Inductively coupled plasma (ICP-OES)
Normal commercial instrumentation.
6.1.5 Flame atomic absorption spectrometer (FAAS)
Normal commercial instrumentation.
6.2 Method B
6.2.1 Differential thermal analyser (DTA)
Commercial differential thermal analyser or differential thermal analyser/thermogravimetric analyser
(DTA/TGA).
6.2.2 Platinum pans
7 Reagents
7.1 General
All reagents shall be at least of analytical grade and suitable for their specific purposes.
Other specific reagents are listed and described in the reference methods for digestion or instrumental
determination listed in Clause 2.
7.2 Method A
7.2.1 Water of grade 1 as specified by EN ISO 3696:1995.
7.2.2 Sodium hydroxide (NaOH), 0,75 mol/l.
7.2.3 Nitric acid (HNO ), 0,14
...