Work

Biochar Amendment in the Green Roof Substrate Improve Air Quality

Year: 2022

Type: conference-paper

Abstract: 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.

Source: E3S Web of Conferences

DOI: 10.1051/e3sconf/202235001005

Authors: Yishu Hu, Haoming Chen

Institutions: Nanjing Agricultural University, Nanjing University of Science and Technology

Language: English

Topic: Urban Heat Island Mitigation

Subfield: Environmental Engineering

Field: Environmental Science

Domain: Physical Sciences

SDGs: Climate action, Responsible consumption and production, Sustainable cities and communities

Open Access status: diamond

OpenAlex ID: W4285267943