***Data underlying the publication: Oxygen-to-Ammonium-Nitrogen Ratio as an Indicator for Oxygen Supply Management in Microoxic Bioanodic Ammonium Oxidation***

Authors:
Xiaofang Yan, Dandan Liu, Sanne M.de Smit, Vera Komin, Cee J.N Buisman, Annemiek ter Heijne.

Environmental technology, Wageningen University & University,

Contact information: Xiaofang.yan@wur.nl

Environmental Technology, Wageningen University & Research, P.O. Box 17, 6700 AA Wageningen, The Netherlands

***General Introduction***

This dataset contains data collected in the chair group Environmental Technology at Wageninge University & Research,as part of Xiafoang Yan's PhD Thesis (chapter 2), The data in this data set
was collected between 2022.10-2023.10

This reserch project was grant by Paqell B.V and China Scholarship Council (CSC).

It is being made public for Publications in order for other researchers to access the raw data.

***Purpose of the test campaign**
To investigated NH4+ oxidation at the bioanode with different O2 and NH4+-N ratios (O₂/NH₄⁺-N) of 0.5, 1.0 and 1.5 and DO (0.5 mg-O2/L). Our specific focus was on achieving high NH4+ oxidation while simultaneously maintaining the selectivity of NH4+ oxidation to N2. 
Additionally, the diversity of N-related functional bacteria was characterized to elucidate the underlying N conversion reactions in the microbial electrolysis cells systems.

***Describe of the data in this data set***

Four different O2 condition were applied, I) O2/NH4+-NL 0.5, II) O2/NH4+-NL 1.0, III) O2/NH4+-NL 1.5, IV) DO ~0.5 mg-O2/L 
OCV: open circuit potential
CCV: closed circuit potential 
R1 R2 Represent 2 duplicated reactors running under identical conditions.
