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Enhanced Biodecolorization Performance of Azo Dyes Under High-Salt Conditions by a Marine Microbial Community Exposed to Moderate-Intensity Static Magnetic Field

机译:通过暴露于中等强度静态磁场的海洋微生物群落,增强了高盐条件下偶氮染料的生物浓缩性能

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摘要

Effects of moderate-intensity static magnetic field (SMF) on biodecolorization of azo dyes by a marine microbial community (MMC) and halotolerance of the consortium were investigated. Performance of decolorization, chemical oxygen demand (COD) removal, detoxification, and biomass multiplication exposed to SMF of different intensities were monitored and compared. In addition, effects of SMF on microbial community structure were analyzed using a high-throughput sequencing technique. Results showed that compared with those with the MMC without SMF, efficiencies of decolorization, COD removal, and detoxification were higher when exposed to 45.3 mT SMF; however, they were lower when exposed to 95.0 and 249.5 mT SMF. By contrast, biomass multiplication was enhanced by all the three tested SMFs. On the contrary, 45.3 mT SMF also enhanced halotolerance of the MMC. Results of MiSeq sequencing demonstrated that 45.3 mT SMF influenced biodiversity and structure of the MMC, and the relative abundance of some putative genera involved in azo dye decolorization increased, including bacteria such as iShewanella and iVibrio , fungi such as iIssatchenkia , and genera affiliated to unclassified Pseudeurotiaceae. This study might provide a potentially useful pathway for improving effectiveness of biological treatment processes and their tolerance to extreme conditions in practical applications.
机译:研究了中等强度静态磁场(SMF)对海洋微生物群(MMC)的偶氮染料的生物浓度和联盟的黑烟作用。监测脱色,化学需氧量(COD)去除,解毒和生物质繁殖,暴露于不同强度的SMF,并进行比较。此外,使用高通量测序技术分析SMF对微生物群落结构的影响。结果表明,与MMC没有SMF,脱色,鳕鱼去除和排毒的效率相比,在暴露于45.3mt的SMF时更高;然而,当暴露于95.0和249.5 mt时,它们较低。相比之下,所有三个测试的SMF都增强了生物量乘法。相反,45.3毫升SMF也增强了MMC的Halotolerance。 MiSeq测序的结果证明了45.3 MT的SMF影响了MMC的生物多样性和结构,以及偶氮染料脱色所涉及的一些推定的属的相对丰度增加,包括细菌,如肺肺和 vibrio,真菌如<我>伊斯坦特尼基,以及隶属于未分类的假曲线犹太藻。本研究可以提供一种可用的途径,用于提高生物处理过程的有效性及其对实际应用中的极端条件的耐受性。

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