CEN/TS 16980-1:2016
(Main)Photocatalysis - Continuous flow test methods - Part 1: Determination of the degradation of nitric oxide (NO) in the air by photocatalytic materials
Photocatalysis - Continuous flow test methods - Part 1: Determination of the degradation of nitric oxide (NO) in the air by photocatalytic materials
This standard describes a method for assessing the performance of photocatalytic inorganic materials contained in cement mortars and/or limes or ceramic-based matrices, paints or materials deposited as thin films or coatings on a variety of substrates for the photocatalytic abatement of nitric oxide in the gas phase. This method is not suitable for the assessment of samples to be applied with flow perpendicular to the surface or flow permeating the surface itself as polymeric and paper filters, honeycomb structures and suchlike.
The performance for the photocatalytic sample under test is evaluated by measuring the degradation rate of nitric oxide (NO) using the method described herein. The photocatalytic abatement rate is calculated from the observed rate by eliminating the effects of mass transfer. The intrinsic photocatalytic abatement rate is an intrinsic property of the material tested and makes it possible to distinguish the photocatalytic activities of various products with an absolute scale defined with physical and engineering meaning.
For the measurements and calculations described in this standard the concentration of nitrogen oxides (NOx) is defined as the stoichiometric sum of nitric oxide (NO) and nitrogen dioxide (NO2).
Safety statement
Persons using this document should be familiar with the normal laboratory practice, if applicable. This document cannot address all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any regulatory conditions.
Environmental statement
It is understood that some of the material permitted in this standard may have negative environmental impact. As technological advantages lead to better alternatives for these materials, they will be eliminated from this standard to the extent possible.
At the end of the test, the user of the standard will take care to carry out an appropriate disposal of the wastes, according to local regulation.
Photokatalyse - Prüfverfahren mit kontinuierlichem Durchfluss - Teil 1: Bestimmung des Abbaus von Stickstoffmonoxid (NO) aus der Luft durch photokatalytische Werkstoffe
Diese Norm beschreibt ein Verfahren zur Bewertung der Leistung von photokatalytischen anorganischen Werkstoffen in Zementmörtel und/oder Kalken oder aus Keramik bestehende Grundsubstanzen, Farben oder Werkstoffen, die als dünne Filme oder Beschichtungen auf einer Vielzahl von Trägerwerkstoffen für die photokatalytische Beseitigung von Stickstoffmonoxid in der Gasphase vorkommen. Dieses Verfahren eignet sich weder für die Bewertung von Anwendungen, bei denen die Beschichtung senkrecht zur Oberfläche aufgetragen wird, noch für Anwendungen, bei denen die Oberflächen als polymere Filter und Papierfilter, Wabenstrukturen und dergleichen durchdrungen werden.
Die Leistung für die photokatalytische Probe unter Prüfbedingungen wird durch die Messung der Abbaurate von Stickstoffmonoxid (NO) mit Hilfe des hier beschriebenen Verfahrens bewertet. Die photokatalytische Minderungsrate wird aus den beobachteten Werten berechnet, indem die Auswirkungen des Stoffübergangs abgezogen werden. Die innere photokatalytische Minderungsrate ist eine innere Eigenschaft des untersuchten Werkstoffs und macht es möglich, die photokatalytischen Aktivitäten verschiedener Produkte in einem absoluten Maßstab im Sinne von physikalischen und technischen Eigenschaften zu unterscheiden.
Für die in dieser Norm beschriebenen Messungen und Berechnungen, wird die Konzentration von Stickoxiden (NOx) als die stöchiometrische Summe von Stickstoffmonoxid (NO) und Stickstoffdioxid (NO2) definiert.
Photocatalyse - Méthodes d’essai en flux continu - Partie 1 : Détermination de la dégradation du monoxyde d’azote (NO) dans l’air par des matériaux photocatalytiques
La présente norme décrit une méthode d’évaluation de la performance des matériaux inorganiques photocatalytiques contenus dans les mortiers de ciment et/ou les chaux ou dans les matrices à base de céramique, les peintures ou les matériaux déposés sous forme de films minces ou de revêtements sur une variété de substrats pour la dégradation photocatalytique du monoxyde d’azote en phase gazeuse. Cette méthode ne convient pas pour l’évaluation des échantillons devant être utilisés avec un flux perpendiculaire à la surface ou traversant la surface, comme les filtres polymères et papier, les structures en nid d’abeille et autres éléments similaires.
La performance de l’échantillon photocatalytique étudié est évaluée en mesurant le taux de dégradation du monoxyde d’azote (NO) à l’aide de la méthode décrite ici. Le taux de dégradation photocatalytique est calculé à partir du taux observé en éliminant les effets du transfert de masse. Le taux intrinsèque de dégradation photocatalytique est une propriété intrinsèque du matériau soumis à l’essai et il permet de distinguer les activités photocatalytiques de divers produits au moyen d’une échelle absolue définie par des caractéristiques physiques et mécaniques.
Pour les mesures et les calculs décrits dans la présente norme, la concentration en oxydes d’azote (NOx) est définie comme la somme stoechiométrique du monoxyde d’azote (NO) et du dioxyde d’azote (NO2).
Fotokataliza - Metode preskušanja kontinuiranega pretoka - 1. del: Ugotavljanje razgradnje dušikovega oksida (NO) v zraku z materiali fotokatalize
Ta standard opisuje metodo za ocenjevanje delovanja fotokatalitskih neorganskih materialov v cementnih maltah in/ali apnih ali matrikah, barvah ali materialih na osnovi keramike, ki so naneseni kot tanki filmi ali premazi na različne substrate za fotokatalitsko zmanjšanje dušikovega oksida v plinski fazi. Ta metoda ni primerna za ocenjevanje vzorcev, ki se nanašajo s pretokom, pravokotnim na površino, ali s pretokom, ki prodira skozi površino, kot so polimerni in papirnati filtri, sataste strukture in podobno.
Delovanje fotokatalitskega vzorca med preskusom se ugotavlja z merjenjem stopnje razgradnje dušikovega oksida (NO) z metodo, opisano tukaj. Stopnja fotokatalitskega zmanjšanja se izračuna iz ugotovljene stopnje z odstranitvijo učinkov prenosa mase. Intrinzična stopnja fotokatalitskega zmanjšanja je intrinzična lastnost preskušenega materiala, ki omogoča razlikovanje fotokatalitskih dejavnosti različnih proizvodov z absolutno lestvico, ki je določena v fizičnem in inženirskem smislu.
Za meritve in izračune, opisane v tem standardu, je koncentracija dušikovih oksidov (NOx) določena kot stehiometrična vsota dušikovega oksida (NO) in dušikovega dioksida (NO2).
Izjava o varnosti
Osebe, ki uporabljajo ta dokument, bi morale biti seznanjene z običajno laboratorijsko prakso, če je to potrebno. Ta dokument ne more obravnavati vseh morebitnih varnostnih težav, ki se nanašajo na njegovo uporabo. Za vzpostavitev ustreznih varnostnih in zdravstvenih praks ter za zagotovitev skladnosti z morebitnimi predpisanimi pogoji je odgovoren uporabnik.
Okoljska izjava
Nekateri materiali, uporabljeni v tem standardu, lahko negativno vplivajo na okolje. Ker tehnološke prednosti vodijo do boljših alternativ za te materiale, bodo ti materiali izločeni iz tega standarda v največji možni meri.
Ob koncu preskusa mora uporabnik standarda poskrbeti za ustrezno odlaganje odpadkov v skladu z lokalnimi predpisi.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-februar-2017
Fotokataliza - Metode preskušanja kontinuiranega pretoka - 1. del: Ugotavljanje
razgradnje dušikovega oksida (NO) v zraku z materiali fotokatalize
Photocatalysis - Continuous flow test methods - Part 1: Determination of the degradation
of nitric oxide (NO) in the air by photocatalytic materials
Photokatalyse - Durchlauftestverfahren - Teil 1: Bestimmung der Verminderung von
Stickoxiden (NO) in Luft durch photokatalystische Materialien
Photocatalyse - Méthodes d'essai en flux continu - Partie 1: Détermination de la
dégradation du monoxyde d'azote (NO) dans l'air par des matériaux photocatalytiques
Ta slovenski standard je istoveten z: CEN/TS 16980-1:2016
ICS:
25.220.20 Površinska obdelava Surface treatment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
CEN/TS 16980-1
TECHNICAL SPECIFICATION
SPÉCIFICATION TECHNIQUE
December 2016
TECHNISCHE SPEZIFIKATION
ICS 25.220.20
English Version
Photocatalysis - Continuous flow test methods - Part 1:
Determination of the degradation of nitric oxide (NO) in
the air by photocatalytic materials
Photocatalyse - Méthodes d'essai en flux continu - Photokatalyse - Prüfverfahren mit kontinuierlichem
Partie 1 : Détermination de la dégradation du Durchfluss - Teil 1: Bestimmung des Abbaus von
monoxyde d'azote (NO) dans l'air par des matériaux Stickstoffmonoxid (NO) aus der Luft durch
photocatalytiques photokatalytische Werkstoffe
This Technical Specification (CEN/TS) was approved by CEN on 8 August 2016 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, 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: Avenue Marnix 17, B-1000 Brussels
© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 16980-1:2016 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms, definitions and abbreviations . 5
3.1 Terms and definitions . 5
3.2 Abbreviations . 5
4 Principle . 7
5 Interferences . 7
6 Apparatus . 7
7 Sample preparation . 13
7.1 Precaution. 13
7.2 Sample characteristics . 13
7.3 Conditioning . 13
8 Measurement of concentrations . 14
8.1 General . 14
8.2 Measurement of the initial concentration of nitrogen oxides before entering the
photochemical reactor . 14
8.3 Conversion without sample . 14
8.4 Conversion in the dark and in the presence of sample . 15
8.5 Conversion under illumination in the presence of sample . 15
9 Calculation of photocatalytic degradation rate . 17
9.1 The observed rate of photocatalytic degradation . 17
9.2 Intrinsic rate of photocatalytic transformation . 18
10 Acceptability ranges of main test parameters . 18
11 Test report . 19
Annex A (informative) Typical trend of NO, NO and NO concentrations during a
2 x
photocatalytic test . 21
Annex B (informative) Example of test for the control of mass transfer conditions . 22
Annex C (informative) Typical Ohmic response of the fan . 23
Bibliography . 24
European foreword
This document (CEN/TS 16980-1:2016) has been prepared by Technical Committee CEN/TC 386
“Photocatalysis”, the secretariat of which is held by AFNOR.
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.
This document is part of the CEN/TS 16980 series that consists of the following parts:
— Part 1: Determination of the degradation of nitric oxide (NO) in the air by photocatalytic materials
— Part 2: [To be determined].
According to the CEN/CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom
1 Scope
This standard describes a method for assessing the performance of photocatalytic inorganic materials
contained in cement mortars and/or limes or ceramic-based matrices, paints or materials deposited as
thin films or coatings on a variety of substrates for the photocatalytic abatement of nitric oxide in the
gas phase. This method is not suitable for the assessment of samples to be applied with flow
perpendicular to the surface or flow permeating the surface itself as polymeric and paper filters,
honeycomb structures and suchlike.
The performance for the photocatalytic sample under test is evaluated by measuring the degradation
rate of nitric oxide (NO) using the method described herein. The photocatalytic abatement rate is
calculated from the observed rate by eliminating the effects of mass transfer. The intrinsic
photocatalytic abatement rate is an intrinsic property of the material tested and makes it possible to
distinguish the photocatalytic activities of various products with an absolute scale defined with physical
and engineering meaning.
For the measurements and calculations described in this standard the concentration of nitrogen oxides
(NO ) is defined as the stoichiometric sum of nitric oxide (NO) and nitrogen dioxide (NO ).
x 2
Safety statement
Persons using this document should be familiar with the normal laboratory practice, if applicable. This
document cannot address all of the safety problems, if any, associated with its use. It is the
responsibility of the user to establish appropriate safety and health practices and to ensure compliance
with any regulatory conditions.
Environmental statement
It is understood that some of the material permitted in this standard may have negative environmental
impact. As technological advantages lead to better alternatives for these materials, they will be
eliminated from this standard to the extent possible.
At the end of the test, the user of the standard will take care to carry out an appropriate disposal of the
wastes, according to local regulation.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
CEN/TS 16599:2014, Photocatalysis - Irradiation conditions for testing photocatalytic properties of
semiconducting materials and the measurement of these conditions
EN ISO 9169, Air quality - Definition and determination of performance characteristics of an automatic
measuring system (ISO 9169)
ISO 7996, Ambient air — Determination of the mass concentration of nitrogen oxides —
Chemiluminescence method
3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this document, the following terms, definitions and abbreviations apply.
3.1.1
concentration of nitrogen oxides
NO
x
stoichiometric sum of nitric oxide (NO) and nitrogen dioxide (NO )
Note 1 to entry: For grade 999 nitrogen or air: the purity of the gas should be equal at least to 99,9 %.
3.1.2
photocatalyst
Catalyst able to produce, upon absorption of light, chemical transformations of the reaction partners
Note 1 to entry: The excited state of the photocatalyst repeatedly interacts with the reaction partners forming
reaction intermediates and regenerates itself after each cycle of such interactions.
3.1.3
photocatalytic materials
materials in which or on which the photocatalyst is added by coating, impregnation, mixing, etc
3.2 Abbreviations
CSTR Continuous Stirred-Tank Reactor
IN
C concentration at reactor inlet
OUT,DARK
C concentration of NO and NO at reactor outlet under stable conditions in the dark (no
illumination)
OUT,light
concentration at reactor outlet under stable conditions with illumination (lamp on)
C
IN
concentration of NO at reactor inlet
C
NO
IN
concentration of NO at reactor inlet
C
NO
OUT,DARK
concentration of NO at reactor outlet under stable conditions in the dark (no
C
NO
illumination) without sample
OUT,DARK
concentration of NO at reactor outlet under stable conditions in the dark (no
C
NO
illumination) without sample
OUT,DARK
concentration of NO at reactor outlet under stable conditions in the dark (no
C
NO,S
illumination) in presence of sample
OUT,DARK
concentration of NO at reactor outlet under stable conditions in the dark (no
C
NO ,S
illumination) in presence of sample
OUT,LIGHT
concentration of NO at reactor outlet under stable conditions with illumination (lamp
C
NO
on) without sample
OUT,LIGHT
concentration of NO at reactor outlet under illumination of sample measured at fan
C
NO,0
speed at nominal voltage V
OUT,LIGHT concentration NO at reactor outlet under illumination of sample measured at fan speed
C
NO ,0
nominal voltage V
F Flow
th
F fan flow at i potential
v,i
I irradiance
LED light emitting diodes
MM molecular mass
P pressure in atmosphere
PTFE Polytetrafluoroethylene
R ideal gas constant
RH gas relative humidity at 25 °C inside the reactor
dark
conversion of NO in the dark
η
NO
dark
conversion to NO in the dark
η
NO
PHOTO
conversion of NO under illumination without sample
η
NO,lamp
th
total
conversion of NO measured with fan speed at i potential
η
NO ,i
th
total
conversion to NO measured with fan speed at i potential
η
NO ,i
photo
NO abatement rate at each fan speed (i = 0.n)
r
NO,i
photo
NO photocatalyt
...
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