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http://hdl.handle.net/10397/87777
Title: | Evolution of microbial dynamics with the introduction of real seawater portions in a low-strength feeding anammox process | Authors: | Ji, XM Wang, YL Lee, PH |
Issue Date: | Jun-2020 | Source: | Applied microbiology and biotechnology, June 2020, v. 104, no. 12, p. 5593-5604 | Abstract: | The salinity effect on anammox bacteria has been widely reported; however, rare studies describe the microbial dynamics of anammox-based process response to the introduction of real seawater at mainstream conditions. In this study, an anammox process at mainstream conditions without pre-enriching anammox bacteria was shifted to the feeds of a synthetic wastewater with a portion of seawater mixture. It achieved over 0.180 kg-N/(m(3) day) of nitrogen removal rate with an additional seawater proportion of 20% in the influent. The bacterial biodiversity was significantly increased with the increase of seawater proportions. High relative abundance of anammox bacteria (34.24-39.92%) related to Ca. Brocadia was enriched and acclimated to the saline environment. However, the introduction of seawater caused the enrichment of nitrite-oxidizing Ca. Nitrospira, which was responsible for the deterioration of nitrogen removal efficiency. Possible adaptation metabolisms in anammox bacteria and other nitrogen transforming bacteria are discussed. These results highlight the importance of microbial diversity for anammox process under the saline environments of 20% and 40% seawater composition. | Keywords: | Low-strength wastewater Real seawater Ca Brocadia Microbial community Nitrite-oxidizing bacteria |
Publisher: | Springer | Journal: | Applied microbiology and biotechnology | ISSN: | 0175-7598 | DOI: | 10.1007/s00253-020-10598-9 | Rights: | © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The following publication Ji, X., Wang, Y. & Lee, P. Evolution of microbial dynamics with the introduction of real seawater portions in a low-strength feeding anammox process. Appl Microbiol Biotechnol 104, 5593–5604 (2020) is available at https://dx.doi.org/10.1007/s00253-020-10598-9 |
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