TY - GEN
T1 - Exploring Biochar as Stable Carbon Material for Suppressing Erosion in Green Infrastructure
AU - Huang, Yuan Xu
AU - Bao, Xia
AU - Huang, He
AU - Garg, Ankit
AU - Cai, Wei Ling
AU - Zhussupbekov, Askar
N1 - Publisher Copyright:
© The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2022.
PY - 2022
Y1 - 2022
N2 - Many biomaterials (fibers) have been proposed for minimizing soil erosion. However, those biomaterials are prone to degradation under microbial activity. In contrast, biochar, a relatively stable carbon material (half-life period >100 years) has been explored recently for minimizing soil erosion. Life period of such material is well beyond the design period of any geo-environmental infrastructure. This study evaluates individual and coupling effects as well as the relative importance of four important factors, biochar content, slope gradient, slope length, and rainfall intensity using flume tests. Bare soil (BS) and soil-biochar composites (SBCs) were subjected to flume testing under factorial experiment design. The experimental results indicate that biochar addition significantly increased water retention capacity and decreased soil loss. It lowered the sensitivity of green infrastructure to rainfall events and enhanced the resistance of green infrastructure to water-related hazards. Biochar content is the most significant effect in reducing total erosion sediment, while slope length and slope gradient are the least important factors. Based on the performance of SBCs, biochar is suggested as a promising stable carbon material for the green infrastructure.
AB - Many biomaterials (fibers) have been proposed for minimizing soil erosion. However, those biomaterials are prone to degradation under microbial activity. In contrast, biochar, a relatively stable carbon material (half-life period >100 years) has been explored recently for minimizing soil erosion. Life period of such material is well beyond the design period of any geo-environmental infrastructure. This study evaluates individual and coupling effects as well as the relative importance of four important factors, biochar content, slope gradient, slope length, and rainfall intensity using flume tests. Bare soil (BS) and soil-biochar composites (SBCs) were subjected to flume testing under factorial experiment design. The experimental results indicate that biochar addition significantly increased water retention capacity and decreased soil loss. It lowered the sensitivity of green infrastructure to rainfall events and enhanced the resistance of green infrastructure to water-related hazards. Biochar content is the most significant effect in reducing total erosion sediment, while slope length and slope gradient are the least important factors. Based on the performance of SBCs, biochar is suggested as a promising stable carbon material for the green infrastructure.
KW - Biochar
KW - Erosion
KW - Flume experiment
KW - Infiltration
KW - Runoff
UR - http://www.scopus.com/inward/record.url?scp=85197913060&partnerID=8YFLogxK
U2 - 10.1007/978-981-16-6277-5_37
DO - 10.1007/978-981-16-6277-5_37
M3 - Conference Proceeding
AN - SCOPUS:85197913060
SN - 9789811662768
T3 - Geotechnical Engineering and Sustainable Construction - Sustainable Geotechnical Engineering
SP - 461
EP - 468
BT - Geotechnical Engineering and Sustainable Construction - Sustainable Geotechnical Engineering
A2 - Karkush, Mahdi O.
A2 - Choudhury, Deepankar
PB - Springer
T2 - 2nd International Conference on Geotechnical Engineering-Iraq, ICGECI 2021
Y2 - 22 June 2021 through 23 June 2021
ER -