“Revolutionizing Construction: How Adding Nitrogen to Concrete Can Slash Harmful NOx Emissions”
A groundbreaking study has revealed that adding nitrogen to concrete could have a significant impact on reducing global levels of harmful nitrogen oxides (NOx) emitted by the construction industry in developing towns and cities. The research, published in Nature Cities, suggests that this innovative approach could lead to a substantial decrease in NOx emissions, ultimately improving air quality and public health.
According to the study, concrete nitrogenation could potentially reduce NOx emissions by 3.4-6.9 megatonnes (Mt) in 2021, representing 6-13% of industry-related emissions. By 2050, this process could lead to a total reduction of 131-384 Mt of NOx, equivalent to 75-260 years potentially lost to premature death and reduced quality of life.
NOx are known to be highly reactive air pollutants that can contribute to acid rain, ozone layer depletion, and various health issues, particularly respiratory diseases. The researchers emphasize the importance of addressing and managing these emissions to enhance urban health, promote sustainable industrial growth, and ensure environmental well-being.
Dr. Yuli Shan, a co-author of the study from the University of Birmingham, highlighted the significance of commercializing nitrogenation as a more economically and environmentally viable solution compared to other processes targeting carbon dioxide emissions. Ms. Ning Zhang, the first author from the Leibniz Institute of Ecological Urban & Regional Development, emphasized the potential of concrete in capturing NOx and its role in mitigating air pollution and managing construction waste in industrialized regions.
The researchers identified China, Europe, and the United States as key players with the capacity to contribute significantly to this area, given their focus on circular economies and environmental concerns. They also recommended the establishment of an emissions trading system for NOx, similar to the one in place for CO2, to quantify the benefits of NOx sequestration accurately.
While the study highlights the environmental and economic benefits of concrete nitrogenation, challenges related to material and gas transportation need to be addressed for practical application. The experts suggest leveraging existing concrete carbonation systems to optimize logistics and enhance the feasibility of concrete nitrogenation.
Overall, the findings of this study offer a promising solution for reducing NOx emissions and improving air quality in rapidly urbanizing and industrialized regions, ultimately contributing to a healthier and more sustainable future for all.