Abstract

Anaerobic ammonium oxidation (anammox) bacteria significantly improve the efficiency and reduce cost of nitrogen removal in wastewater treatment plants. However, their slow growth and vulnerable activity limit the application of anammox technology. In this paper, the enhancement of biotin on the nitrogen removal activity of anammox bacteria in short-term batch experiments was studied. We found that biotin played a significant role in promoting anammox activity within a biotin concentration range of 0.1–1.5 mg/L. At a biotin concentration of 1.0 mg/L, the total nitrogen removal rate (NRR) increased by 112%, extracellular polymeric substance (EPS) secretion and heme production significantly improved, and anammox bacterial biomass increased to maximum levels. Moreover, the predominant genus of anammox bacteria was Candidatus Brocadia.

Details

Title
Effects of biotin on promoting anammox bacterial activity
Author
Li, Qinyu 1 ; Chen, Jinhui 1 ; Guo-hua, Liu 1 ; Xu Xianglong 1 ; Zhang, Qian 1 ; Wang Yijin 1 ; Yuan Junli 1 ; Li, Yinghao 1 ; Lu, Qi 1 ; Wang Hongchen 1 

 Renmin University of China, Low Carbon Water Environmental Technology Research Center, School of Environment & Natural Resources, Beijing, China (GRID:grid.24539.39) (ISNI:0000 0004 0368 8103) 
Publication year
2021
Publication date
2021
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2479578155
Copyright
© The Author(s) 2021. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.