Enhanced performance of thallium(I) removal by in situ-generated manganese oxides during biogenic Mn(II) oxidation

Zhang, Liangjing; Yu, Yongqiang; Xu, Xiangjian; Xiao, Han; Deng, Sheng; Han, Xu; Fu, Xianliang; Jiang, Yonghai

doi:10.1016/j.seppur.2022.121821

Cited by 9 publications

(4 citation statements)

References 51 publications

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“…With a decreasing water temperature, the kinetic constant K gradually decreased, and the reaction half-life t 1/2 gradually extended. Compared with the literature [23,28,29], the kinetic constant K in this study was smaller, and the half-reaction time t 1/2 was longer. For example, the kinetic constant K reported by Cheng et al [29] was 0.687, and the halfreaction time t 1/2 was only 1.010 min, which was due to the smaller filter material particle size (0.8~1 mm) and the constant water temperature.…”

Section: Changes In Concentrations and Kinetic Characteristics Of Man...contrasting

confidence: 69%

“…The results of a kinetic study of the pollutants in water can determine the time required to effectively remove a particular pollutant, and this reaction time can provide parameters for the design of pollutant treatment equipment. [28]. To better guide the design of treatment plants for the treatment of water containing COD Mn and ammonia-N, the kinetic characteristics of the removal of COD Mn , ammonia-N, and Mn by biological aerated filters at different water temperatures were studied by taking simulated lake water containing COD Mn and ammonia-N as a research object.…”

Section: Influence Of Water Temperature On Manganese Removal Efficiencymentioning

confidence: 99%

“…The effect of a decreasing water temperature on manganese was considerably less than that on CODMn and ammonia-N, which indicated that manganese-oxidizing bacteria have stronger adaptability to water temperature. Liu et al [23] and Zhang et al [28] used biofilter columns to treat groundwater containing iron, manganese, and ammonia-N and studied the kinetic characteristics of BIO-Mn removal. The results showed that the nature of BIO-Mn removal was in accordance with first-order reaction kinetics (Table 4).…”

Section: Changes In Concentrations and Kinetic Characteristics Of Man...mentioning

confidence: 99%

“…In this research, a first-order kinetic model was used to fit the BIO-Mn removal results at different temperatures. The results showed that Liu et al [23] and Zhang et al [28] used biofilter columns to treat groundwater containing iron, manganese, and ammonia-N and studied the kinetic characteristics of BIO-Mn removal. The results showed that the nature of BIO-Mn removal was in accordance with first-order reaction kinetics (Table 4).…”

Section: Changes In Concentrations and Kinetic Characteristics Of Man...mentioning

confidence: 99%

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Influence of Temperature on the Removal Efficiency of Organic Matter and Ammonia from Micro-Polluted Source Water

Nengzi

et al. 2023

Water

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Temperature is an important factor influencing the treatment effect of biological aerated filters (BAFs). In this study, BAFs incorporating biological manganese oxides (BMOs) were used to treat micro-polluted source water containing organic masses and ammonia, and the influence of temperature on the removal efficiency of the pollutants was investigated. The results showed that after the formation of biogenic manganese oxides (BMOs) in the filter layer, the removal efficiency of CODMn significantly improved. When the water temperature was approximately 24 °C, 16 °C, and 6~8 °C, the removal rates of CODMn, ammonia, and manganese were 60.64, 42.55, and 20.48; 98.40, 95.58, and 85.04; and 98.70, 97.63, and 96.38%, respectively. The influence of water temperature on the removal efficiency of the pollutants was hierarchically structured as follows: CODMn > ammonia > manganese. Analysis of the removal efficiencies of the pollutants along the filter layer showed that CODMn had been eliminated in every filtration layer, and ammonia and manganese were mainly removed in the 0~0.4 m and 0~0.8 m regions of the filter layer, respectively. With a decreasing water temperature, the concentrations of CODMn, ammonia, and manganese along the filter layer increased. The biological CODMn, manganese, and ammonia removal processes were all first-order kinetic reactions. With a decreasing water temperature, the kinetic constant k gradually decreased, and the reaction half-life (t1/2) gradually increased.

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Section: Changes In Concentrations and Kinetic Characteristics Of Man...contrasting

confidence: 69%

Section: Influence Of Water Temperature On Manganese Removal Efficiencymentioning

confidence: 99%

Section: Changes In Concentrations and Kinetic Characteristics Of Man...mentioning

confidence: 99%

Section: Changes In Concentrations and Kinetic Characteristics Of Man...mentioning

confidence: 99%

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Influence of Temperature on the Removal Efficiency of Organic Matter and Ammonia from Micro-Polluted Source Water

Nengzi

et al. 2023

Water

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Effect of Cu(II) and Conserved Copper Binding Sites on the Multicopper Oxidase CopA and Characterization of BioMnO_x

Tang,

Huang,

Liu

et al. 2024

Proteins

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The microbial manganese removal process is believed to consist of the catalytic oxidation of Mn(II) by manganese oxidase. In this study, the multicopper oxidase CopA was purified and exhibited high manganese oxidation activity in vitro, and it was found that Cu(II) can significantly enhance its manganese oxidation activity. Gene site‐directed mutagenesis was used to mutate four conserved copper binding sites of CopA to obtain four mutant strains. The manganese removal efficiencies of the four strains were determined, and it was found that H120 is the catalytically active site of CopA. The loss of Cu(II) and the mutation of the conserved copper binding site H120 resulted in the loss of ethoxyformyl and quinone modifications, a reduction in the number of modifications, and a change in the position of modifications, eventually causing a decrease in protein activity from 85.87% to 70.1%. These results reveal that Cu(II) and H120 play an indispensable role in manganese oxidation by the multicopper oxidase CopA. X‐ray photoelectron spectroscopy (XPS) analysis indicates that biogenic manganese oxides produced by strains and by CopA were both composed of MnO2 and Mn3O4 and that the average valence of Mn was 3.2.

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The important role of the interaction between manganese minerals and metals in environmental remediation: a review

Chen

Qiu

et al. 2023

Environ Sci Pollut Res

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With illegal discharge of wastewater containing inorganic and organic pollutants, combined pollution is common and need urgent attention. Understanding the migration and transformation laws of pollutants in the environment has important guiding signi cance for environmental remediation. Due to the characteristics of adsorption, oxidation and catalysis, manganese minerals play important role in the environment fate of pollutants. This review summarizes the forms of interaction between manganese minerals and metals, the environmental importance of the interaction between manganese minerals and metals, and the contribution of this interaction in improving performance of Mn-based composite for environmental remediation. The literatures have indicated that the interactions between manganese minerals and metals involve in surface adsorption, lattice replacement and formation of association minerals. The synergistic or antagonistic effect resulted from the interaction in uence the puri cation of heavy metal and organism pollutant. The synergistic effect bene ted from the coordination of adsorption and oxidation, convenient electron transfer, abundant oxygen vacancies and fast migration of lattice oxygen. Based on the synergy, Mn-based composites have been widely used for environmental remediation. This review is helpful to fully understand the migration and transformation process of pollutants in the environment, expand the resource utilization of manganese minerals for environmental remediation.

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Enhanced performance of thallium(I) removal by in situ-generated manganese oxides during biogenic Mn(II) oxidation

Cited by 9 publications

References 51 publications

Influence of Temperature on the Removal Efficiency of Organic Matter and Ammonia from Micro-Polluted Source Water

Influence of Temperature on the Removal Efficiency of Organic Matter and Ammonia from Micro-Polluted Source Water

Effect of Cu(II) and Conserved Copper Binding Sites on the Multicopper Oxidase CopA and Characterization of BioMnO_x

The important role of the interaction between manganese minerals and metals in environmental remediation: a review

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Enhanced performance of thallium(I) removal by in situ-generated manganese oxides during biogenic Mn(II) oxidation

Cited by 9 publications

References 51 publications

Influence of Temperature on the Removal Efficiency of Organic Matter and Ammonia from Micro-Polluted Source Water

Influence of Temperature on the Removal Efficiency of Organic Matter and Ammonia from Micro-Polluted Source Water

Effect of Cu(II) and Conserved Copper Binding Sites on the Multicopper Oxidase CopA and Characterization of BioMnOx

The important role of the interaction between manganese minerals and metals in environmental remediation: a review

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Effect of Cu(II) and Conserved Copper Binding Sites on the Multicopper Oxidase CopA and Characterization of BioMnO_x