Insights into the synergistic removal mechanisms of thallium(I) by biogenic manganese oxides in a wide pH range

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

doi:10.1016/j.scitotenv.2022.154865

Cited by 23 publications

(3 citation statements)

References 50 publications

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“…At lower pH (pH < PZC) values, the surface charge of the BMO and heavy-metal ions were both positive, suggesting that a purely repulsive coulombic interaction was experienced between the BMO and metal ions. By contrast, the surface of BMO was negatively charged at pH > 3.5, which was favorable for nonspecific adsorption of Mn ions through electrostatic attraction [ 60 ]. In this study, the pH of culturing situation was always higher than 3.5, implying that the intermolecular electrostatic attraction participated in the Mn-removal process.…”

Section: Resultsmentioning

confidence: 99%

Enhancing the Mn-Removal Efficiency of Acid-Mine Bacterial Consortium: Performance Optimization and Mechanism Study

Hou,

Zhang,

et al. 2023

Microorganisms

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In this study, an acclimated manganese-oxidizing bacteria (MnOB) consortium, QBS-1, was enriched in an acid mine area; then, it was used to eliminate Mn(Ⅱ) in different types of wastewater. QBS-1 presented excellent Mn removal performance between pH 4.0 and 8.0, and the best Mn-removal efficiency was up to 99.86% after response surface methodology optimization. Unlike other MnOB consortia, the core bacteria of QBS-1 were Stenotrophomonas and Achromobacter, which might play vital roles in Mn removal. Besides that, adsorption, co-precipitation and electrostatic binding by biological manganese oxides could further promote Mn elimination. Finally, the performance of the Mn biofilter demonstrated that QBS-1 was an excellent inoculant, which indicates good potential for removing Mn contamination steadily and efficiently.

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Section: Resultsmentioning

confidence: 99%

Enhancing the Mn-Removal Efficiency of Acid-Mine Bacterial Consortium: Performance Optimization and Mechanism Study

Hou,

Zhang,

et al. 2023

Microorganisms

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“…This explains how biofilters may simultaneously remove Mn and As from groundwater. In a similar way, bioMnOx also transforms the extremely toxic Co 2+ [80] and TI + [81] into less hazardous metal oxides. On the contrary, the oxidation of Cr 3+ by bioMnOx, which results in the formation of more mobile Cr 6+ , increases the toxicity.…”

Section: Adsorption and Oxidation Of Metalsmentioning

confidence: 97%

A Review of Manganese-Oxidizing Bacteria (MnOB): Applications, Future Concerns, and Challenges

Cai

Yang

Qiu

et al. 2023

IJERPH

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Groundwater serving as a drinking water resource usually contains manganese ions (Mn2+) that exceed drinking standards. Based on the Mn biogeochemical cycle at the hydrosphere scale, bioprocesses consisting of aeration, biofiltration, and disinfection are well known as a cost-effective and environmentally friendly ecotechnology for removing Mn2+. The design of aeration and biofiltration units, which are critical components, is significantly influenced by coexisting iron and ammonia in groundwater; however, there is no unified standard for optimizing bioprocess operation. In addition to the groundwater purification, it was also found that manganese-oxidizing bacteria (MnOB)-derived biogenic Mn oxides (bioMnOx), a by-product, have a low crystallinity and a relatively high specific surface area; the MnOB supplied with Mn2+ can be developed for contaminated water remediation. As a result, according to previous studies, this paper summarized and provided operational suggestions for the removal of Mn2+ from groundwater. This review also anticipated challenges and future concerns, as well as opportunities for bioMnOx applications. These could improve our understanding of the MnOB group and its practical applications.

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“…Solid-phase extraction methods for ferrous metal cyanides have attracted a lot of attention due to their high selectivity, rapid separation, high thermal stability, and radiation stability [51,52]. Magnetic Prussian blue (PB) was synthesized at room temperature by Zhang et al [53]. The particles can be used for a highly selective removal of Tl.…”

Section: Thallium Removal By Iron Oxidesmentioning

confidence: 99%

Recent Advances in Thallium Removal from Water Environment by Metal Oxide Material

Ren

Feng

Zhao

et al. 2023

IJERPH

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Thallium is widely used in industrial and agricultural development. However, there is still a lack of systematic understanding of its environmental hazards and related treatment methods or technologies. Here, we critically assess the environmental behavior of thallium in aqueous systems. In addition, we first discuss the benefits and limitations of the synthetic methods of metal oxide materials that may affect the practicality and scalability of TI removal from water. We then assess the feasibility of different metal oxide materials for TI removal from water by estimating the material properties and contaminant removal mechanisms of four metal oxides (Mn, Fe, Al, and Ti). Next, we discuss the environmental factors that may inhibit the practicality and scalability of Tl removal from water. We conclude by highlighting the materials and processes that could serve as more sustainable alternatives to TI removal with further research and development.

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Insights into the synergistic removal mechanisms of thallium(I) by biogenic manganese oxides in a wide pH range

Cited by 23 publications

References 50 publications

Enhancing the Mn-Removal Efficiency of Acid-Mine Bacterial Consortium: Performance Optimization and Mechanism Study

Enhancing the Mn-Removal Efficiency of Acid-Mine Bacterial Consortium: Performance Optimization and Mechanism Study

A Review of Manganese-Oxidizing Bacteria (MnOB): Applications, Future Concerns, and Challenges

Recent Advances in Thallium Removal from Water Environment by Metal Oxide Material

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