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Title: Plenty of room for carbon on the ground : potential applications of biochar for stormwater treatment
Authors: Mohanty, SK
Valenca, R
Berger, AW
Yu, IKM 
Xiong, X 
Saunders, TM
Tsang, DCW 
Keywords: Engineered biochar
Green infrastructure
Stormwater pollutants
Sustainable drainage system
Urban water
Water resilience
Issue Date: 2018
Publisher: Elsevier
Source: Science of the total environment, 2018, v. 625, p. 1644-1658 How to cite?
Journal: Science of the total environment 
Abstract: Low impact development (LID) systems are increasingly used to manage stormwater, but they have limited capacity to treat stormwater—a resource to supplement existing water supply in water-stressed urban areas. To enhance their pollutant removal capacity, infiltration-based LID systems can be augmented with natural or engineered geomedia that meet the following criteria: they should be economical, readily available, and have capacity to remove a wide range of stormwater pollutants in conditions expected during intermittent infiltration of stormwater. Biochar, a carbonaceous porous co-product of waste biomass pyrolysis/gasification, meets all these criteria. Biochar can adsorb pollutants, improve water-retention capacity of soil, retain and slowly release nutrients for plant uptake, and help sustain microbiota in soil and plants atop; all these attributes could help improve removal of contaminants in stormwater treatment systems. This article discusses contaminant removal mechanisms by biochar, summarizes specific biochar properties that enhance targeted contaminants removal from stormwater, and identifies challenges and opportunities to retrofit biochar in LID to optimize stormwater treatment.
ISSN: 0048-9697
EISSN: 1879-1026
DOI: 10.1016/j.scitotenv.2018.01.037
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