Characterization of waste - Sampling and analysis of weak acid dissociable cyanide discharged into tailings ponds

This European Technical Specification specifies methods for sampling and analysis of weak acid dissociable cyanide discharged into tailings ponds.
NOTE   The document can be used to support the requirements in the Directive 2006/21/EC of the European Parliament and of the Council of 15 March 2006 on the management of waste from extractive industries.

Charakterisierung von Abfällen - Probenahme und Analyse von mit schwachen Säuren freisetzbare Cyanide bei der Einleitung in Absetzteiche

Diese Europäische Technische Spezifikation legt Verfahren für die Probenahme und die Analyse von leicht
freisetzbaren Cyaniden fest, die in Absetzteiche eingeleitet werden.
ANMERKUNG Das vorliegende Dokument kann zur Unterstützung der Anforderungen genutzt werden, die in der
Richtlinie 2006/21/EG des Europäischen Parlaments und des Rates vom 15. März 2006 über die Bewirtschaftung von
Abfällen aus der mineralgewinnenden Industrie enthalten sind.

Caractérisation des déchets - Échantillonnage et analyse des cyanures à acide faible dissociable déversés dans des bassins à stériles

La présente Spécification Technique du CEN spécifie des méthodes qui permettent d'échantillonner et
d'analyser le cyanure à acide faible dissociable déversé dans des bassins à stériles.
NOTE Le présent document peut être utilisé pour venir à l’appui des exigences décrites dans la
Directive 2006/21/CE du Parlement Européen et du Conseil du 15 mars 2006 concernant la gestion des déchets de
l'industrie extractive.

Karakterizacija odpadkov - Vzorčenje in analiza lahko sprostljivega cianida iz usedalnikov

Ta evropska tehnična specifikacija določa metode za vzorčenje in analizo lahko sprostljivega cianida, ki se prazni v usedalnike.
OPOMBA: Standard se lahko uporablja za podporo zahtev iz Direktive 2006/21/ES Evropskega parlamenta in Sveta z dne 15. marca 2006 o ravnanju z odpadki iz rudarskih in drugih ekstraktivnih dejavnosti ter o spremembi Direktive 2004/35/ES.

General Information

Status
Published
Publication Date
15-Jan-2012
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
27-Dec-2011
Due Date
02-Mar-2012
Completion Date
16-Jan-2012

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SLOVENSKI STANDARD
SIST-TS CEN/TS 16229:2012
01-februar-2012
.DUDNWHUL]DFLMDRGSDGNRY9]RUþHQMHLQDQDOL]DODKNRVSURVWOMLYHJDFLDQLGDL]
XVHGDOQLNRY

Characterization of waste - Sampling and analysis of weak acid dissociable cyanide

discharged into tailings ponds
Charakterisierung von Abfällen - Probenahme und Analyse von mit schwachen Säuren
freisetzbare Cyanide bei der Einleitung in Absetzteiche

Caractérisation des déchets - Échantillonnage et analyse des cyanures à acide faible

dissociable déversés dans des bassins à stériles
Ta slovenski standard je istoveten z: CEN/TS 16229:2011
ICS:
13.030.01 Odpadki na splošno Wastes in general
SIST-TS CEN/TS 16229:2012 en,fr,de

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

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SIST-TS CEN/TS 16229:2012
---------------------- Page: 2 ----------------------
SIST-TS CEN/TS 16229:2012
TECHNICAL SPECIFICATION
CEN/TS 16229
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
June 2011
ICS 13.030.40
English Version
Characterization of waste - Sampling and analysis of weak acid
dissociable cyanide discharged into tailings ponds

Caractérisation des déchets - Échantillonnage et analyse Charakterisierung von Abfällen - Probenahme und Analyse

des cyanures à acide faible dissociable déversés dans des von mit schwachen Säuren freisetzbare Cyaniden bei der

bassins à stériles Einleitung in Absetzteiche

This Technical Specification (CEN/TS) was approved by CEN on 14 May 2011 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

© 2011 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 16229:2011: E

worldwide for CEN national Members.
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SIST-TS CEN/TS 16229:2012
CEN/TS 16229:2011 (E)
Contents Page

Foreword ..............................................................................................................................................................3

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

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

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

3 Terms and definitions ...........................................................................................................................5

4 Safety procedures..................................................................................................................................6

5 Apparatus and reagents ........................................................................................................................6

5.1 Apparatus ...............................................................................................................................................6

5.2 Reagents .................................................................................................................................................6

6 Sampling procedures ............................................................................................................................6

6.1 General ....................................................................................................................................................6

6.2 Sampling plan ........................................................................................................................................7

6.3 Choice of the sampling location ..........................................................................................................7

6.3.1 General ....................................................................................................................................................7

6.3.2 Slurry sampling at the pipeline ............................................................................................................7

6.3.3 Slurry sampling at the destruction tank ..............................................................................................7

6.4 Sample handling in field .......................................................................................................................7

6.5 Documentation .......................................................................................................................................8

7 Sample pretreatment .............................................................................................................................8

7.1 pH - check ...............................................................................................................................................8

7.2 Filtration ..................................................................................................................................................8

7.3 Removal of oxidizing matter and sulfides ...........................................................................................8

7.4 Composite samples ...............................................................................................................................8

8 Analytical step ........................................................................................................................................9

8.1 General ....................................................................................................................................................9

8.2 Analytical procedure .............................................................................................................................9

9 Test report ..............................................................................................................................................9

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

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SIST-TS CEN/TS 16229:2012
CEN/TS 16229:2011 (E)
Foreword

This document (CEN/TS 16229:2011) has been prepared by Technical Committee CEN/TC 292

“Characterization of waste”, the secretariat of which is held by NEN.

This document has been prepared under a mandate given to CEN by the European Commission and the

European Free Trade Association, (Mandate M/395), which assigned the development of standards on the

characterization of waste from extractive industries

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.

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
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SIST-TS CEN/TS 16229:2012
CEN/TS 16229:2011 (E)
Introduction

As gold typically occurs at very low concentrations it is often extracted from the ore using a cyanide leaching

process. The waste from which the gold was removed is referred to as residue or tailings material. Tailings,

usually slurry, are pumped to a pond after treatment with for example hydrogen peroxide or sulfur dioxide to

destroy cyanides.

In “Directive 2006/21/EC on the management of waste from extractive industries” [1] the following is

addressed in Article 13; no.6:

In the case of a pond involving the presence of cyanide, the operator shall ensure that the concentration of

weak acid dissociable cyanide in the pond is reduced to the lowest possible level using best available

techniques and, in any case, at waste facilities which have previously been granted a permit or have already

been in operation on 1 May 2008 that the concentration of weak acid dissociable cyanide at the point of

discharge of the tailings from the processing plant into the pond does not exceed 50 ppm as from 1 May 2008,

25 ppm as from 1 May 2013, 10 ppm as from 1 May 2018 and 10 ppm at waste facilities which are granted a

permit after 1 May 2008.

Methods for sampling and analysis have been selected to ensure the aim of this directive. Methods described

here are either EN or ISO standards with consideration of the Cyanide Code [2].
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SIST-TS CEN/TS 16229:2012
CEN/TS 16229:2011 (E)
1 Scope

This CEN Technical Specification specifies methods for sampling and analysis of weak acid dissociable

cyanide discharged into tailings ponds.

NOTE The document can be used to support the requirements in the Directive 2006/21/EC of the European

Parliament and of the Council of 15 March 2006 on the management of waste from extractive industries.

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.

EN 14899, Characterization of waste – Sampling of waste materials – Framework for the preparation and

application of a Sampling Plan

EN ISO 14403, Water quality – Determination of total cyanide and free cyanide by continuous flow analysis

(ISO 14403:2002)

ISO 6703-2, Water quality – Determination of cyanide – Part 2: Determination of easily liberatable cyanide

3 Terms and definitions
3.1
tailings pond

engineered facility for managing tailings resulting from ore processing and for clearing and recycling of

process water

NOTE Tailings ponds are most of the times formed by a dam construction. They mainly contain tailings along with

varying amounts of free water [3].
3.2
cyanide

chemical compound that contains the cyano group (C≡N), occurs either as free cyanide or bound to a metal in

complex form
NOTE Free cyanide is very toxic.
3.3
weak acid dissociable (WAD) cyanide

cyanide from substances with cyanide groups and a measurable hydrocyanic acid vapour pressure at pH = 4

and room temperature.
[ISO 6703-2]

NOTE 1 Such substances include all cyanides which will undergo chlorination, especially hydrocyanic acid, alkali- and

alkali earth metal cyanides, and complex cyanides of zinc, cadmium, silver, copper and nickel. Complex

...

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