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ORIGINAL RESEARCH article

Front. Microbiol.
Sec. Extreme Microbiology
Volume 15 - 2024 | doi: 10.3389/fmicb.2024.1505542
This article is part of the Research Topic Adaptation of Halophilic/Halotolerant Microorganisms and Their Applications, Volume II View all articles

An efficient co-culture of Halomonas mongoliensis and Dunaliella salina for phenol degradation under high salt conditions

Provisionally accepted
Tao Tang Tao Tang 1*Changjian Wang Changjian Wang 2Haiqiao Guo Haiqiao Guo 2Bo Huang Bo Huang 1Zhikun Xin Zhikun Xin 3Xufan Zheng Xufan Zheng 3Jinli Zhang Jinli Zhang 1Peng Yu Peng Yu 3
  • 1 Shanghai Advanced Research Institute, Chinese Academy of Sciences (CAS), Pudong, China
  • 2 ChnEnergy BaoRiXiLe Energy Co., Ltd, Hulunbeier, China
  • 3 ChnEnergy New Energy Technology Research Institute Co., Ltd., Beijing, China

The final, formatted version of the article will be published soon.

    Phenol is one of the major organic pollutants in high salt industrial wastewater. The biological treatment method is considered to be a cost-effective and eco-friendly method, in which the co-culture of microalgae and bacteria shows a number of advantages. In the previous study, a co-culture system featuring Dunaliella salina (D. salina) and Halomonas mongoliensis (H. mongoliensis) was established and could degrade 400 mg L -1 phenol at 3% NaCl concentration. In order to enhance the performance of this system, D. salina strain was subjected to adaptive laboratory evolution (ALE) by gradually increasing the phenol concentration from 200 mg L -1 to 500 mg L -1 at 3% NaCl concentration. At a phenol concentration of 500 mg L -1 , the phenol removal rate of the resulting D. salina was 78.4% within 7 days, while that of the original strain was only 49.2%.The SOD, POD and MDA contents of the resulting strain were lower than those of the original strain, indicating that the high concentration of phenol was less harmful to the  *

    Keywords: Phenol removal, Dunaliella salina, Halomonas mongoliensis, Co-culture system, Adaptive laboratory evolution

    Received: 04 Oct 2024; Accepted: 29 Nov 2024.

    Copyright: © 2024 Tang, Wang, Guo, Huang, Xin, Zheng, Zhang and Yu. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Tao Tang, Shanghai Advanced Research Institute, Chinese Academy of Sciences (CAS), Pudong, China

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.