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Open Access Green as soon as Postprint is submitted to ZB.
Enhanced nitrogen removal using solid carbon source in constructed wetland with limited aeration.
Bioresour. Technol. 248, 98-103 (2017)
In this study, the performances of nitrogen removal in constructed wetlands using solid carbon source with limited aeration were investigated. The blends of poly-3-hydroxybutyrate-co-3-hydroxyvalerate (PHBV) and polyacetic acid (PLA) were used as the carbon source and biofilm support. The performances of nitrogen removal, microbial abundance and microbial community structure in the biofilm attached on PHBV/PLA were investigated. Higher ammonia removal efficiency (91.00%) and total nitrogen removal efficiency (97.03%) than non-aerated constructed wetland (System NA) were achieved in constructed wetland with limited aeration (System A). The limited aeration decreased the average concentrations of COD in effluent. And, System A had higher microbial abundance than System NA. Pyrosequencing analysis showed that denitrifying bacteria Brevinema (41.85%) and Thiothrix (12.33%) were the predominant genus in the biofilm attached on the carbon source in System NA and System A, respectively.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Constructed Wetlands ; Limited Aeration ; Nitrogen Removal ; Solid Carbon Source; Waste-water Treatment; Packed-bed Bioreactor; Biofilm Carrier; Nitrate Concentrations; Nutrient Removal; Organic-matter; Denitrification; Sludge; Groundwater; Performance
ISSN (print) / ISBN
0960-8524
e-ISSN
1873-2976
Journal
Bioresource Technology
Quellenangaben
Volume: 248,
Pages: 98-103
Publisher
Elsevier
Publishing Place
Oxford
Reviewing status
Peer reviewed
Institute(s)
Research Unit Comparative Microbiome Analysis (COMI)