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Title: PRJEB19822      
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description:
Biochar-amended infiltration systems may significantly improve urban water quality by enhancing removal of trace organic contaminants (TOrCs) from runoff. As biochar’s sorption capacity will eventually saturate, stimulation of biological TOrC attenuation may be beneficial. The objective of this study was to determine if biodegradable organic carbon amendments can improve TOrC attenuation in biochar-amended biofilters. It was hypothesized that microbial growth in response to dissolved organic carbon (DOC) availability would establish more robust and diverse microbial communities, leading to enhanced TOrC biodegradation and sorption to biological material. This hypothesis was evaluated in TOrC-spiked microcosm and column experiments, utilizing a representative microbial consortium from actual runoff and DOC extracted from straw and compost. Microcosms with compost DOC exhibited broader TOrC biodegradation potential than microcosms with raw runoff or straw DOC. 16s rRNA gene sequencing revealed community clustering according to DOC type, suggesting that DOC availability caused shifts in community structure that affected TOrC biodegradation. Columns exhibited enhanced biological TOrC attenuation in presence ofbiofilms established with compost DOC but not straw DOC. These results reveal that biodegradable organic carbon sources stimulate biological TOrC attenuation in biochar-amended biofilters, providing insight into the design of stormwater biofilters for improved water quality.
ID:
PRJEB19822
accesstypes:
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landingpage: http://www.ncbi.nlm.nih.gov/bioproject/PRJEB19822
authentication:
none
authorization:
none
abbreviation:
NCBI
homePage: http://www.ncbi.nlm.nih.gov
ID:
SCR:006472
name:
National Center for Biotechnology Information
homePage: http://www.ncbi.nlm.nih.gov/bioproject
ID:
SCR:004801
name:
NCBI BioProject

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