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Homepage>BS Standards>25 MANUFACTURING ENGINEERING>25.220 Surface treatment and coating>25.220.20 Surface treatment>20/30405589 DC BS EN 16980-1. Photocatalysis. Continuous flow test methods Part 1. Determination of the degradation of nitric oxide (NO) in the air by photocatalytic materials
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20/30405589 DC BS EN 16980-1. Photocatalysis. Continuous flow test methods Part 1. Determination of the degradation of nitric oxide (NO) in the air by photocatalytic materials

20/30405589 DC

BS EN 16980-1. Photocatalysis. Continuous flow test methods Part 1. Determination of the degradation of nitric oxide (NO) in the air by photocatalytic materials

CURRENCY
LANGUAGE
English
Standard number:20/30405589 DC
Pages:29
Released:2020-03-23
Status:Draft for Comment
DESCRIPTION
This standard 20/30405589 DC BS EN 16980-1. Photocatalysis. Continuous flow test methods is classified in these ICS categories:
  • 25.220.20 Surface treatment

This document 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 document the concentration of nitrogen oxides (NOx) is defined as the stoichiometric sum of nitric oxide (NO) and nitrogen dioxide (NO2).


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