E3S Web Conf.
Volume 350, 2022International Conference on Environment, Renewable Energy and Green Chemical Engineering (EREGCE 2022)
|Number of page(s)||5|
|Section||Green Chemical Engineering|
|Published online||09 May 2022|
Biochar Amendment in the Green Roof Substrate Improve Air Quality
School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
2 College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China.
* Corresponding author: email@example.com
In this paper, biochar was added to the green roof in order to study the effect of biochar amendment on improving the air quality. Simulation experiments showed that biochar treatments can reduce the concentration of CO2 by 7.3-28.8%, CO by 10.6-20.7%, SO2 by 9.8-21.6%, and NO2 by 2.1-11.5% in the micro-environment. Outdoor monitoring experiments showed that biochar can reduce 24.0-46.6% of PM2.5, 3.7-23.3% of PM1.0, and 17.3-38.4% of PM10. In addition, the high temperature is the main factor affecting the adsorption of small particles. Structural equation analysis showed that biochar mainly absorbed the particulate matters and harmful gases by reducing the surface temperature, increasing the humidity and promoting the plants growth.
© The Authors, published by EDP Sciences, 2022
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