Publication
Title
Influence of Dust and Oil Accumulation on Effectiveness of Photocatalytic Concrete Surfaces
Author
Abstract
The day-to-day negative effect of contaminating substances on the NOx removal effectiveness of photocatalytic surfaces and their recovery capacity after undergoing cleansing is of real academic and practical interest. This paper analyzes the NOx removal effectiveness of two different types of photocatalytic concrete surface layers incorporating nano-TiO2 particles. Both types of surfaces are examined before and after being subjected to dust accumulation and oil impregnation. The recovery of their NOx removal capacity after undergoing various cleansing processes is also evaluated. The results are compared to those of their respective reference samples. The results show that the high NOx removal capacity of the spray-coated samples is partially maintained even after a high concentration of dust accumulation. However, the water-cleansing process employed is sufficient to recover the lost NOx removal capacity. It is also discovered that the nano-TiO2 particles lose nearly all their photocatalytic capacity after being subjected to oil impregnation, and that the cleansing processes, either by an alkaline detergent or using an n-hexane solvent, fails to recover the initial NOx removal capacity.
Language
English
Source (journal)
Journal of environmental engineering / American Society of Civil Engineers. - New York
Publication
New York : 2017
ISSN
0733-9372
DOI
10.1061/(ASCE)EE.1943-7870.0001239
Volume/pages
143 :9 (2017)
Article Reference
04017040
ISI
000407706300005
Full text (Publisher's DOI)
UAntwerpen
Publication type
Subject
External links
Web of Science
Record
Identifier
Creation 13.10.2023
Last edited 12.02.2024
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