Bioresource Technology 249 (2018) 869–879 Contents lists available at ScienceDirect Bioresource Technology journal homepage: www.elsevier.com/locate/biortech Denitriﬁcation behavior and microbial community spatial distribution inside woodchip-based solid-phase denitriﬁcation (W-SPD) bioreactor for nitrate-contaminated water treatment a a, b a a a Jiamin Zhao , Chuanping Feng , Shuang Tong , Nan Chen , Shanshan Dong , Tong Peng , Shunlong Jin School of Water Resources and Environment, China University of Geosciences (Beijing), No. 29 Xueyuan Road, Haidian District, Beijing 100083, China China Meat Research Center, Beijing 100068, China GR APHICAL A BSTRACT ARTICLE I NFO ABSTRACT Keywords: The NO removal pathway and microorganisms change along with the height of an up-ﬂow W-SPD bioreactor was Nitrate removal investigated in this study. Modeling and microbial community analysis were used to analyze the denitriﬁcation be- − 2 Woodchip solid carbon source havior in W-SPD bioreactor. The results showed that NO removal rate matched for zero-order (R >0.97)and ﬁrst- Modeling 2 order (R > 0.94) combination Michaelis-Menten kinetics, whereas microbial reaction rate suited for modiﬁed logistic Microbial community structure model (R > 0.99). The excellent denitriﬁcation performance (92.5%–96.4%) and microorganisms’ quantity occurred Spatial distribution in the middle of W-SPD bioreactor. Moreover, high-throughput sequencing analysis revealed that
Bioresource Technology – Elsevier
Published: Feb 1, 2018
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