Development of novel inexpensive adsorbents from waste concrete to mitigate NOx emissions

Girish Ramakrishnan; Alexander Orlov

doi:10.1016/j.buildenv.2013.10.016

Development of novel inexpensive adsorbents from waste concrete to mitigate NO_x emissions

Girish Ramakrishnan
, Alexander Orlov

Materials Science and Engineering

Stony Brook University

Stony Brook University

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

Mitigating NO_x (NO+NO₂) pollution can have result in notable improvement of public health and environmental conditions, especially in urban environments. This work is the first demonstration of applications of both fresh and aged concrete as inexpensive adsorbents for NO₂ removal. The gas phase uptake experiments with fresh and aged concrete demonstrated the feasibility of this approach, while infrared spectroscopy identified a potential mechanism of NO₂ adsorption on concrete surfaces. A decrease in surface basicity due to carbonation appears to be the main factor for observed decrease in NO₂ uptake as a function of concrete age.

Original language	English
Pages (from-to)	28-33
Number of pages	6
Journal	Building and Environment
Volume	72
DOIs	https://doi.org/10.1016/j.buildenv.2013.10.016
State	Published - Feb 2014

Keywords

Adsorption
Carbonation
Concrete
Surface area

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10.1016/j.buildenv.2013.10.016

Cite this

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title = "Development of novel inexpensive adsorbents from waste concrete to mitigate NOx emissions",

abstract = "Mitigating NOx (NO+NO2) pollution can have result in notable improvement of public health and environmental conditions, especially in urban environments. This work is the first demonstration of applications of both fresh and aged concrete as inexpensive adsorbents for NO2 removal. The gas phase uptake experiments with fresh and aged concrete demonstrated the feasibility of this approach, while infrared spectroscopy identified a potential mechanism of NO2 adsorption on concrete surfaces. A decrease in surface basicity due to carbonation appears to be the main factor for observed decrease in NO2 uptake as a function of concrete age.",

keywords = "Adsorption, Carbonation, Concrete, Surface area",

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journal = "Building and Environment",

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AU - Ramakrishnan, Girish

AU - Orlov, Alexander

PY - 2014/2

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N2 - Mitigating NOx (NO+NO2) pollution can have result in notable improvement of public health and environmental conditions, especially in urban environments. This work is the first demonstration of applications of both fresh and aged concrete as inexpensive adsorbents for NO2 removal. The gas phase uptake experiments with fresh and aged concrete demonstrated the feasibility of this approach, while infrared spectroscopy identified a potential mechanism of NO2 adsorption on concrete surfaces. A decrease in surface basicity due to carbonation appears to be the main factor for observed decrease in NO2 uptake as a function of concrete age.

AB - Mitigating NOx (NO+NO2) pollution can have result in notable improvement of public health and environmental conditions, especially in urban environments. This work is the first demonstration of applications of both fresh and aged concrete as inexpensive adsorbents for NO2 removal. The gas phase uptake experiments with fresh and aged concrete demonstrated the feasibility of this approach, while infrared spectroscopy identified a potential mechanism of NO2 adsorption on concrete surfaces. A decrease in surface basicity due to carbonation appears to be the main factor for observed decrease in NO2 uptake as a function of concrete age.

KW - Adsorption

KW - Carbonation

KW - Concrete

KW - Surface area

UR - https://www.scopus.com/pages/publications/84887557290

U2 - 10.1016/j.buildenv.2013.10.016

DO - 10.1016/j.buildenv.2013.10.016

M3 - Article

SN - 0360-1323

VL - 72

SP - 28

EP - 33

JO - Building and Environment

JF - Building and Environment

ER -

Development of novel inexpensive adsorbents from waste concrete to mitigate NO_x emissions

Abstract

Keywords

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