Harnessing diurnal dynamics: Understanding the influence of light-dark cycle on algal-bacterial symbiotic system under aniline stress.

Autor: He Q; School of Civil Engineering & Architecture, Wuhan University of Technology, Wuhan 430070, PR China., Zhang Q; School of Civil Engineering & Architecture, Wuhan University of Technology, Wuhan 430070, PR China. Electronic address: qianzhang@whut.edu.cn., Li M; School of Civil Engineering & Architecture, Wuhan University of Technology, Wuhan 430070, PR China; Sanya Science and Education Innovation Park, Wuhan University of Technology, Hainan 572024, PR China., He J; School of Civil Engineering & Architecture, Wuhan University of Technology, Wuhan 430070, PR China., Lin B; School of Civil Engineering & Architecture, Wuhan University of Technology, Wuhan 430070, PR China., Wu NP; School of Civil Engineering & Architecture, Wuhan University of Technology, Wuhan 430070, PR China., Chen JJ; School of Civil Engineering & Architecture, Wuhan University of Technology, Wuhan 430070, PR China; Sanya Science and Education Innovation Park, Wuhan University of Technology, Hainan 572024, PR China., Liu XH; School of Civil Engineering & Architecture, Wuhan University of Technology, Wuhan 430070, PR China., Dong XQ; School of Civil Engineering & Architecture, Wuhan University of Technology, Wuhan 430070, PR China.
Jazyk: angličtina
Zdroj: Bioresource technology [Bioresour Technol] 2025 Jan; Vol. 416, pp. 131796. Date of Electronic Publication: 2024 Nov 10.
DOI: 10.1016/j.biortech.2024.131796
Abstrakt: To assess the inherent effects of light-dark cycle on the aniline degradation and nitrogen removal in algal-bacterial symbiotic system, three groups with different photoperiods (0L:12D;6L:6D;12L:0D) were set up. The results revealed that the aniline degradation rate of the three systems all surpassed 99 %, the total nitrogen removal rate of Z2-6L:6D was approximately 36 % higher than Z1-0L:12D eventually, the Z1-0L:12D was restrained by NH 4 + -N assimilation and nitrification while anoxic denitrification in Z3-12L:0D. The disappearance of microalgae biomass was accompanied by the sharp decreased of polysaccharide in Z1 and longer illumination suppressed the secretion of extracellular polymeric substances, the Z3 yielded slightly superior biomass production despite the double illumination compared with Z2. Moreover, high throughput sequencing analysis illustrated that the microbial community structure in Z2 was more abundant and even than Z3, the TM7a, norank_f__norank_o__Saccharimonadales, Ellin6067 and Scenedesmus proliferated wildly and the photoinhibition to functional genus was effectively alleviated in Z2.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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