@article { WOS:000439317100027,
	title = {Nitrogen removal performance and functional genes distribution patterns in solid-phase denitrification sub-surface constructed wetland with micro aeration},
	journal = {BIORESOURCE TECHNOLOGY},
	volume = {263},
	year = {2018},
	month = {SEP},
	pages = {223-231},
	abstract = {An up-flow vertical flow constructed wetland (AC-VFCW) filled with ceramsite and 5\% external carbon source poly(3-hydroxybutyrate-hydroxyvalerate) (PHBV) as substrate was set for nitrogen removal with micro aeration. Simultaneous nitrification and denitrification process was observed with 90.4\% NH4+-N and 92.1\% TN removal efficiencies. Nitrification and denitrification genes were both preferentially enriched on the surface of PHBV. Nitrogen transformation along the flow direction showed that NH4+-N was oxidized to NO3{\textendash}N at the lowermost 10 cm of the substrate and NO3{\textendash}N gradually degraded over the depth. AmoA gene was more enriched at -10 and -50 cm layers. NirS gene was the dominant functional gene at the bottom layer with the abundance of 2.05 x 10(7) copies g(-1) substrate while nosZ gene was predominantly abundant with 7.51 x 10(6) and 2.64 x 10(6) copies g(-1) substrate at the middle and top layer, respectively, indicating that functional division of dominant nitrogen functional genes forms along the flow direction in AC-VFCW.},
	issn = {0960-8524},
	doi = {10.1016/j.biortech.2018.04.078},
	author = {Sun, Haimeng and Yang, Zhongchen and Wei, Caijie and Wu, Weizhong}
}
