Organic Matter Decomposition in River Ecosystems: Microbial Interactions Influenced by Total Nitrogen and Temperature in River Water

Liu, Yibo; Zhang, Baiyu; Zhang, Yixin; Shen, Yanping; Cheng, Cheng; Yuan, Weilin

doi:10.1007/s00248-022-02013-9

Cited by 8 publications

(3 citation statements)

References 102 publications

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“…environments contaminated by U. Furthermore, Ascomycota, Rozellomycota and Basidiomycota, have been reported in previous studies as phyla that could potentially play a key role in the decomposition and degradation of lignocellulosic biomass(Young et al 2018;Liu et al 2022). At the genus level, the water samples from the two U mines were characterized by the distribution of genera that have been previously reported in…”

mentioning

confidence: 69%

Biostimulation of Indigenous Microbes for Uranium Bioremediation in Former U Mine Water: Multidisciplinary approach assessment.

Newman-Portela,

Krawczyk-Bärsch,

Lopez-Fernandez

et al. 2023

Preprint

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Characterising physicochemistry and microbial diversity in uranium (U) mine water is a key prerequisite for understanding the biogeochemical processes occurring in these water mass and for the design of an efficient bioremediation strategy. In this study water samples from two former U-mines in East Germany were analysed. The U and sulphate (SO42−) concentrations of Schlema-Alberoda mine water (U: 1 mg/L; SO42−: 335 mg/L) are 2 and 3 order of magnitude higher than those of the Pöhla sample (U: 0.01 mg/L; SO42−: 0.5 mg/L). U, SO42− and Fe seem to shape the differential microbial diversity of the two water samples. Microbial diversity analysis identified U(VI)-reducing bacteria (e.g., Desulfurivibrio) and wood-degrading fungi (e.g., Cadophora) providing electron donors for the growth of U-reducers. U-bioreduction experiments were performed to screen electron donors (glycerol, vanillic acid and gluconic acid) for Schlema-Alberoda U mine water bioremediation. Glycerol effectively removed 99% of soluble U (initially present as Ca2UO2(CO3)3(aq) and UO2(CO3)34−), along with 95% of Fe and 58% of SO42− from the mine water. The results may contribute to the design of low U concentrations bioremediation strategies based on the biostimulation of U-reducing bacteria.

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mentioning

confidence: 69%

Biostimulation of Indigenous Microbes for Uranium Bioremediation in Former U Mine Water: Multidisciplinary approach assessment.

Newman-Portela,

Krawczyk-Bärsch,

Lopez-Fernandez

et al. 2023

Preprint

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show abstract

“…As can be seen from Table 3, the Coverage index of the samples was above 0.999, indicating that all sequences in the samples were detected and the data were reliable (Taketani et al, 2013). It also indicates that the sequencing depth is sufficient and the sequencing results can well reflect the real situation of the samples (Liu et al, 2022; Yuan et al, 2018). The microbial diversity in the system was continuously improved by comparing the microbial diversity in water before and after the addition of complex microbial inoculants.…”

Section: Resultsmentioning

confidence: 99%

Six complex microbial inoculants for removing ammonia nitrogen from waters

Sun

Zhang

et al. 2022

Water Environment Research

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To determine the effect of microbial inoculants on the removal of ammonia nitrogen (NH4+‐N), six different complex microbial inoculants were studied. In this study, their effectiveness on NH4+‐N removal was compared, and their microbial community composition was determined. High‐throughput sequencing results showed that Proteobacteria and Firmicutes were the dominant phyla in six samples. Before the reaction, Bacillus, Cyanobacteria, and Mitochondria genera were the dominant genera. The dominant genera were significantly different after the reaction with the addition of bacterial agents. The six water samples were Massilia, Escherichia‐Shigella, Brevibacillus, Mitsuaria, Bacillus, and Ralstonia. Among the six complex microbial inoculants, “Gandu nitrifying bacteria (NR4)” have the best removal effect on NH4+‐N. In addition, the removal effect of six different bacterial agents on chemical oxygen demand (COD) was compared. The results showed that “Bilaiqing ammonia nitrogen removal bacteria agent (NR5)” has the best removal effect on COD. Single‐factor experiments suggested that the optimal conditions for NR4 bacteria were pH 7, 30°C, 1.0 g/L of bacterial agent dosage and a wide range of NH4+‐N from 30 to 300 mg/L. Practitioner Points The nitrogen removal effects of six different microbial agents were compared. High‐throughput sequencing provides important insights into the study of ammonia nitrogen removal by microbial communities. Analysis of six different complex bacterial agents by high‐throughput sequencing. The relative abundance of microorganisms is not proportional to the ability to remove NH4+‐N Good application effect in urban landscape water body.

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“…UO 2 2+ ) to the insoluble U(IV) mineral, such as uraninite (UO 2 ), occurs through bacterial reduction under anoxic conditions. This transition could occur as a direct process, where U(VI) acts as a final electron acceptor, or as an indirect process, coupled to the microbial reduction of Fe(III) (Liu et al 2007 ; You et al 2021 ). In a natural environment, this reduction process is not carried out by a single micro-organism, but rather a microbial consortium including U reducing bacteria, generating optimal conditions for biological reduction to take place.…”

Section: Introductionmentioning

confidence: 99%

Biostimulation of indigenous microbes for uranium bioremediation in former U mine water: multidisciplinary approach assessment

Newman-Portela,

Krawczyk-Bärsch,

Lopez-Fernandez

et al. 2023

Environ Sci Pollut Res

View full text Add to dashboard Cite

Characterizing uranium (U) mine water is necessary to understand and design an effective bioremediation strategy. In this study, water samples from two former U-mines in East Germany were analysed. The U and sulphate (SO42−) concentrations of Schlema-Alberoda mine water (U: 1 mg/L; SO42−: 335 mg/L) were 2 and 3 order of magnitude higher than those of the Pöhla sample (U: 0.01 mg/L; SO42−: 0.5 mg/L). U and SO42− seemed to influence the microbial diversity of the two water samples. Microbial diversity analysis identified U(VI)-reducing bacteria (e.g. Desulfurivibrio) and wood-degrading fungi (e.g. Cadophora) providing as electron donors for the growth of U-reducers. U-bioreduction experiments were performed to screen electron donors (glycerol, vanillic acid, and gluconic acid) for Schlema-Alberoda U-mine water bioremediation purpose. Thermodynamic speciation calculations show that under experimental conditions, U(VI) is not coordinated to the amended electron donors. Glycerol was the best-studied electron donor as it effectively removed 99% of soluble U, 95% of Fe, and 58% of SO42− from the mine water, probably by biostimulation of indigenous microbes. Vanillic acid removed 90% of U, and no U removal occurred using gluconic acid.

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Organic Matter Decomposition in River Ecosystems: Microbial Interactions Influenced by Total Nitrogen and Temperature in River Water

Cited by 8 publications

References 102 publications

Biostimulation of Indigenous Microbes for Uranium Bioremediation in Former U Mine Water: Multidisciplinary approach assessment.

Biostimulation of Indigenous Microbes for Uranium Bioremediation in Former U Mine Water: Multidisciplinary approach assessment.

Six complex microbial inoculants for removing ammonia nitrogen from waters

Biostimulation of indigenous microbes for uranium bioremediation in former U mine water: multidisciplinary approach assessment

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