Untangling the nitrate removal pathways for a constructed wetland- sponge iron coupled system and the impacts of sponge iron on a wetland ecosystem.
Journal of Hazardous Materials(2020)
Abstract
•CW-Fe0 system produces a high-efficiency removal of NO3−-N.•s-Fe0 introduces chemical- and hydrogen-driven denitrification into CWs.•Hydrogenophaga is the dominant denitrifier in a CW-Fe0 system.•s-Fe0 promotes the TIN removal under a low COD/N ratio condition.
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Key words
Sponge iron,Constructed wetlands,Inorganic electron donor,Denitrification,Wetland substrate
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