Home > Research > Publications & Outputs > Short- and long-term effects of manganese, zinc...

Electronic data

  • 1-s2.0-S0045653517317629-main

    Rights statement: This is the author’s version of a work that was accepted for publication in Chemosphere. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Chemosphere, 193, 2018 DOI: 10.1016/j.chemosphere.2017.11.002

    Accepted author manuscript, 2.5 MB, PDF document

    Available under license: CC BY-NC-ND: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License

Links

Text available via DOI:

View graph of relations

Short- and long-term effects of manganese, zinc and copper ions on nitrogen removal in nitritation-anammox process

Research output: Contribution to journalJournal article

Published
  • Huayu Li
  • Hong Yao
  • Dayi Zhang
  • Lushen Zuo
  • Jia Ren
  • Jinyuan Ma
  • Jin Pei
  • Yaru Xu
  • Chengyong Yang
Close
<mark>Journal publication date</mark>02/2018
<mark>Journal</mark>Chemosphere
Volume193
Number of pages10
Pages (from-to)479-488
Publication statusPublished
Early online date1/11/17
Original languageEnglish

Abstract

This study provided a deep insight into the impacts of trace elements (Mn2+, Zn2+ and Cu2+) on nitritation-anammox process. For short-term exposure, all the three elements could improve the nitrogen removal rate (NRR) and the optimal concentrations were 2.0 mg/L, 2.0 mg/L and 0.5 mg/L for Mn2+, Zn2+ and Cu2+, respectively. Accordingly, the NRR were enhanced 54.62%, 45.93% and 44.09%. The long-term experiments were carried out in lab-scale sequencing batch reactors. The surprising results showed that only Mn2+ addition could enhance the long-term nitritation-anammox process, and the NRR increased from 0.35 ± 0.01 kg N/m3/d (control, no extra trace element addition) to 0.49 ± 0.03 kg N/m3/d. Vice versa, the amendment of Zn2+ reduced the NRR to 0.28 ± 0.02 kg N/m3/d, and Cu2+ had no significant effect on the NRR (0.36 ± 0.01 kg N/m3/d). From the analysis of microbial community structure, it was explained by the increasing abundance of anaerobic ammonium oxidizing bacteria (AnAOB) only in Mn2+ treatment, whereas Zn2+ predominantly promoted ammonium oxidizing bacteria (AOB). Additionally, the majority of Mn2+ was identified inside AnAOB cells, and Zn2+ and Cu2+ were mainly located in AOB. Our results indicated the synergistic effects of trace elements on nitritation-anammox, both short-term encouraging activities of AnAOB and long-term altering microbial community structure. This work implies the importance of trace elements addition in nitritation-anammox process.

Bibliographic note

This is the author’s version of a work that was accepted for publication in Chemosphere. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Chemosphere, 193, 2018 DOI: 10.1016/j.chemosphere.2017.11.002