Characterization of sludges - Pre-treatment for the determination of extractable ammonia using 2 mol/l potassium chloride

This European standard specifies a procedure for the determination of extractable ammonia using a 2 mol/l potassium chloride solution in raw and digested sewage sludges. The range of the method is up to 100 g/kg N assuming appropriate dilution of the potassium chloride extract in the final measurement step.
   The above wording will be modified once the round robin results are available. It may be suitable for other types of sludges, but the user should validate the method using these sludges.

Charakterisierung von Schlämmen - Vorbehandlung zur Bestimmung des extrahierbaren Ammoniums unter Verwendung von 2 mol/l Kaliumchlorid

Diese Europäische Norm legt ein Verfahren zur Bestimmung von extrahierbarem Ammonium unter
Verwendung von 2 mol/l Kaliumchloridlösung in Roh- und Faulschlamm fest. Der Bereich dieses Verfahrens
reicht bis 100 g/kg N bei angenommener angemessener Verdünnung des Kaliumchloridextrakts in der
Endmessung.
ANMERKUNG Die oben verwendete Aussage wird nach Vorliegen der Ringversuchsergebnisse modifiziert werden.
Das Verfahren kann für andere Schlammarten geeignet sein, der Anwender sollte jedoch das Verfahren unter
Verwendung dieser Schlämme validieren.

Caractérisation des boues - Prétraitement pour le dosage de l'azote ammoniacal extractible par une solution de chlorure de potassium a 2 mol/l

La présente Norme européenne prescrit un mode opératoire pour le dosage de l’azote ammoniacal extractible au moyen d’une solution de chlorure de potassium à 2 mol/l mélangée avec des boues d’eaux résiduaires fraîches et digérées. Le domaine de mesurage de la méthode a pour limite maximale 100 g/kg N en partant du principe de la dilution appropriée de l’extrait de chlorure de potassium lors de la phase finale de mesurage.
NOTE L’énoncé ci-dessus sera modifié dès que les résultats des essais interlaboratoires seront disponibles. Il se peut que la méthode puisse convenir à d’autres types de boues mais il est recommandé que l’utilisateur valide la méthode en utilisant ce type particulière de boues.

Karakterizacija blata – Priprava za določevanje amoniaka, dobljenega z ekstrakcijo z 2 mol/l kalijevim kloridom

General Information

Status
Published
Publication Date
31-Aug-2006
ICS
13.030.20 - Liquid wastes. Sludge
Technical Committee
KAT - Soil quality
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Sep-2006
Due Date
01-Sep-2006
Completion Date
01-Sep-2006
Ref Project
EN 14671:2006 - Characterization of sludges - Pre-treatment for the determination of extractable ammonia using 2 mol/l potassium chloride

Overview

SIST EN 14671:2006 is a European standard developed by CEN that defines a standardized procedure for characterizing sludges by determining extractable ammonia content. The method involves pre-treatment of raw and digested sewage sludges using a 2 mol/l potassium chloride (KCl) solution to extract ammonia for subsequent quantification. It is specifically designed to measure ammonia concentrations up to 100 g/kg nitrogen, assuming appropriate sample dilution. This standard is essential for monitoring the ammonia content in sludge, especially when sludges are to be applied to land or disposed of, ensuring environmental safety and regulatory compliance.

Key Topics

  • Scope and Applicability:
    The method targets raw and digested sewage sludges and is potentially applicable to other sludge types, pending user validation.

  • Pre-treatment Process:
    Homogenized sludge is shaken with a 2 mol/l potassium chloride solution for 1 hour at room temperature to extract both soluble and ion-exchangeable ammonia forms, minimizing biological activity during extraction.

  • Sample Handling and Preservation:
    Samples must be cooled below 4°C during transport and analyzed within 24 hours. Frozen samples can be stored at –18°C for up to 4 weeks without significant ammonia alteration.

  • Analytical Procedure:
    Post-extraction, samples are filtered or centrifuged to obtain a clear extract. Ammonia is measured using validated methods such as ISO 5664 distillation/titration or ion chromatography (EN ISO 14911).

  • Calculation and Reporting:
    Extractable ammonia content is expressed as nitrogen per kilogram of dry sludge, standardized by dry residue determination per EN 12880. Test reports must include all relevant procedural and sample data for traceability.

  • Precision and Validation:
    Performance data from interlaboratory comparisons demonstrate reliable recovery of ammonia from sewage sludges, emphasizing method robustness.

  • Safety Considerations:
    Sludge samples can contain pathogens and inflammable gases; thus, flame-proof equipment and appropriate biosafety measures are vital during sample storage and handling.

Applications

  • Wastewater Treatment Monitoring:
    SIST EN 14671:2006 supports wastewater treatment facilities in quantifying ammonia in sludge, essential for managing anaerobic digester performance and sludge stabilization.

  • Agricultural Sludge Use:
    Ensures safe application of sewage sludge on farmland by monitoring ammonia levels, informing nutrient management plans, and preventing environmental ammonia volatilization.

  • Environmental Compliance:
    Regulatory bodies and laboratory analysts rely on this standard for consistent and comparable measurement of ammonia in sludge to comply with European environmental directives.

  • Research and Development:
    Scientists studying sludge composition and nitrogen transformations use this standard method for accurate extractable ammonia profiling.

Related Standards

  • EN 12880:2000 – Characterization of sludges; Determination of dry residue and water content.
  • EN ISO 11732 – Water quality; Determination of ammonium nitrogen using flow analysis or spectrometric detection.
  • EN ISO 14911 – Water quality; Ion chromatography method for ammonium and other cations.
  • ISO 5664 – Water quality; Determination of ammonium by distillation and titration.
  • EN ISO 3696:1995 – Laboratory water quality specifications, ensuring reagent-grade water purity for accurate ammonia analysis.

By adhering to SIST EN 14671:2006, laboratories and industry professionals can achieve standardized, accurate, and reproducible measurement of extractable ammonia in sewage sludges. This supports sustainable sludge management practices, regulatory compliance, and enhanced environmental protection throughout Europe.

Frequently Asked Questions

SIST EN 14671:2006 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Characterization of sludges - Pre-treatment for the determination of extractable ammonia using 2 mol/l potassium chloride". This standard covers: This European standard specifies a procedure for the determination of extractable ammonia using a 2 mol/l potassium chloride solution in raw and digested sewage sludges. The range of the method is up to 100 g/kg N assuming appropriate dilution of the potassium chloride extract in the final measurement step. The above wording will be modified once the round robin results are available. It may be suitable for other types of sludges, but the user should validate the method using these sludges.

This European standard specifies a procedure for the determination of extractable ammonia using a 2 mol/l potassium chloride solution in raw and digested sewage sludges. The range of the method is up to 100 g/kg N assuming appropriate dilution of the potassium chloride extract in the final measurement step. The above wording will be modified once the round robin results are available. It may be suitable for other types of sludges, but the user should validate the method using these sludges.

SIST EN 14671:2006 is classified under the following ICS (International Classification for Standards) categories: 13.030.20 - Liquid wastes. Sludge. The ICS classification helps identify the subject area and facilitates finding related standards.

SIST EN 14671:2006 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Characterization of sludges - Pre-treatment for the determination of extractable ammonia using 2 mol/l potassium chlorideCaractérisation des boues - Prétraitement pour le dosage de l'azote ammoniacal extractible par une solution de chlorure de potassium a 2 mol/lCharakterisierung von Schlämmen - Vorbehandlung zur Bestimmung des extrahierbaren Ammoniums unter Verwendung von 2 mol/l KaliumchloridTa slovenski standard je istoveten z:EN 14671:2006SIST EN 14671:2006en,fr,de13.030.20ICS:SLOVENSKI
STANDARDSIST EN 14671:200601-september-2006

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14671June 2006ICS 13.030.20 English VersionCharacterization of sludges - Pre-treatment for the determinationof extractable ammonia using 2 mol/l potassium chlorideCaractérisation des boues - Prétraitement pour ladétermination de l'Azote ammoniacal extractible utilisant2mol/l de chlorure de potassiumCharakterisierung
von Schlämmen - Vorbehandlung zurBestimmung des extrahierbaren Ammoniums unterVerwendung von 2 mol/l KaliumchloridThis European Standard was approved by CEN on 24 May 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, 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 STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2006 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14671:2006: E

Performance data of the interlaboratory comparison — Summary of sludge exchangeable ammonia results.9 Bibliography.11
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