Estimation of Nitrogen Oxides (NOx) Removal Efficiency for TiO2 Concrete
نویسندگان
چکیده
Nitrogen oxide (NOx) is a significant precursor of particulate matter (PM), particularly in high-traffic areas. Accordingly, this study aimed to reduce the presence nitrogen along roadsides. Titanium dioxide (TiO2) used as photocatalyst remove NOx through chemical reaction. Typically, concrete and TiO2 are mixed create concrete. However, air pollutants or UV rays cannot be allowed come into contact with amount TiO2. Thus, surface penetration method was fix In method, penetrants combined sprayed onto surface, enabling possibility reduction using relatively less When fixation applied vertical structures, however, peeling issue arises. To address this, pressurized structures. This uses external force penetrate specific depth. instance which tried for first time, depth ensure long-term durability well removal efficiency. investigate distribution characteristics, mass ratio particles were measured scanning electron microscope (SEM/EDX). addition, efficiencies evaluated analyzing system (ISO 22197-1 standard). The experimental results showed that efficiency increased an increasing ratio. used, NOX 32% when at 50%, 61% 70%. attributed increase content increases. analyzed forecasted based on surface. As increased, improved, it determined significantly influences Consequently, developed equation estimate efficiency, making possible determine suitable maintenance interval
منابع مشابه
Effect of Fe on the photocatalytic removal of NOx over visible light responsive Fe/TiO2 catalysts
We synthesized different Fe/TiO2 catalysts and studied the influence of Fe on the structure and performance of Fe/TiO2 as a photocatalyst to remove gaseous NO in air under visible light. The electron paramagnetic resonance results revealed that Fe ions substituted the Ti ions of TiO2 prepared by coprecipitation and homogeneous precipitation method. More Fe ions were incorporated into the crysta...
متن کاملPhotocatalytic Removal of NOx Gas from Air by TiO2/Polymer Composite Nanofibers
Nitrogen oxides (NOx) released in atmosphere by fuels combustion lead to photochemical smog and acidic rains and have negative effects on human`s nervous system. In this research nanocomposite membranes of Poly Vinylidene Fluoride (PVDF)/ Poly Dimethylsiloxane (PDMS) and Titanium Dioxide nanoparticles (TiO2) with different weight percentage of TiO2 (0.5 and 1) for adsorption of NOx were prepare...
متن کاملinvestigation of photocatalytic oxidation and wet absorption in a combined system for removal of nitrogen oxides
conclusions application of zinc oxide as the photocatalyst can be effective in the removal process. background one of the important achievements of the past decade was the rapid growth of industries and accordingly production of various chemical compounds. objectives this study presents a combined system of photocatalytic oxidation and absorption solution to remove nitrogen oxides from polluted...
متن کاملRemoval of NOX Using Hydrogen Peroxide Vapor over Fe/TiO2 Catalysts and an Absorption Technique
In this study, we proposed an innovative oxidation–absorption method for low-temperature denitrification (160–240 ◦C), in which NO is initially catalytically oxidized by hydrogen peroxide (H2O2) vapor over titania-based catalysts, and the oxidation products are then absorbed by NaOH solution. The effects of flue gas temperature, molar H2O2/NO ratio, gas hourly space velocity (GHSV), and Fe subs...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Sustainability
سال: 2023
ISSN: ['2071-1050']
DOI: https://doi.org/10.3390/su15119098