A novel manganese oxidizing bacterium-Aeromonas hydrophila strain DS02: Mn(II) oxidization and biogenic Mn oxides generation

Zhang, Yue; Tang, Yankui; Qin, Zhiyi; Luo, Penghong; Ma, Zhou; Tan, Mengying; Kang, Houyao; Huang, Zhining

doi:10.1016/j.jhazmat.2019.01.012

Cited by 91 publications

(30 citation statements)

References 48 publications

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“…Therefore, it can be said that the Mn removal is partially due to the pH increase but not entirely. Various fractions of Mn removal are involved in the metabolism of Mn(II)-oxidizing bacteria including oxidation, intracellular absorption, and extracellular adsorption [ 16 , 17 ]. The pH of NDMn-2 culture in the presence of Mn was close to that in the absence of Mn at all sampling points, whereas their OD 600 values were slightly different.…”

Section: Resultsmentioning

confidence: 99%

“…Five Mn-resistant bacteria isolated from Nakdong River water were determined to belong to three different bacterial phyla, including Proteobacteria (strains NDMn-1, NDMn-6, and NDMn-7), Bacteroidetes (strain NDMn-2), and Firmicutes (strain NDMn-4) ( Figure 6 ). The 4 currently known strains affiliated with Proteobacteria include Pseudomonas putida MnB1 [ 30 ], Aeromonas hydrophila strain DS-2 [ 17 ], Stenotrophomonas sp. 8P [ 13 ], and Leptothrix discophora strain SS-1 [ 31 ].…”

Section: Resultsmentioning

confidence: 99%

“…Strain NDMn-6 was cultivated with 10 mM Mn(II) in a large scale, at 4 L, to harvest precipitates for further characterization using X-ray diffractometer (XRD), FE-SEM, and energy-dispersive spectrometer (EDS) analyses. The Mn precipitate was harvested via centrifugation of the culture medium at 11,000 rpm for 15 min as described previously [ 17 ]. The sample was washed with distilled water and dried in a vacuum freeze-drying machine.…”

Section: Methodsmentioning

confidence: 99%

“…Up to now, several studies that proved Mn removal by bacteria as pure cultures and as mixed consortia have been conducted [ 12 , 13 , 14 , 15 , 16 ]. Some bacterial strains that could perform well in Mn oxidation at low pH and produce high Mn removal efficiency have also been isolated [ 16 , 17 , 18 , 19 ]. The distribution of Mn removal by these isolated Mn(II)-oxidizing bacteria has been extensively clarified by a sequential extraction procedure [ 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

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Biological Manganese Removal by Novel Halotolerant Bacteria Isolated from River Water

Nguyễn

Kang

et al. 2020

Biomolecules

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Manganese-oxidizing bacteria have been widely investigated for bioremediation of Mn-contaminated water sources and for production of biogenic Mn oxides that have extensive applications in environmental remediation. In this study, a total of 5 Mn-resistant bacteria were isolated from river water and investigated for Mn removal. Among them, Ochrobactrum sp. NDMn-6 exhibited the highest Mn removal efficiency (99.1%). The final precipitates produced by this strain were defined as a mixture of Mn2O3, MnO2, and MnCO3. Optimal Mn-removal performance by strain NDMn-6 was obtained at a temperature range of 25–30 °C and the salinity of 0.1–0.5%. More interestingly, strain NDMn-6 could be resistant to salinities of up to 5%, revealing that this strain could be possibly applied for Mn remediation of high salinity regions or industrial saline wastewaters. This study also revealed the potential of self-detoxification mechanisms, wherein river water contaminated with Mn could be cleaned by indigenous bacteria through an appropriate biostimulation scheme.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Biological Manganese Removal by Novel Halotolerant Bacteria Isolated from River Water

Nguyễn

Kang

et al. 2020

Biomolecules

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“…For bacteria, previous studies revealed that the Mn-oxidizing bacterium Aeromonas hydrophila strain DS02 had a high tolerance for Mn(II) stress and generated up to 240 mg/L of Mn oxide in 6 days. The BioMnO x coupled with peroxymonosulfate (PMS) activation degraded 99.5% of 2,4-dimethylaniline within 80 min ( Zhang et al, 2019 ). Stuetz et al (1996) reported that algal-bacterial oxidation by Haemaetococcus sp., Chlamydomonas sp., and Chorella sp.…”

Section: Discussionmentioning

confidence: 99%

Paraquat Degradation by Biological Manganese Oxide (BioMnOx) Catalyst Generated From Living Microalga Pediastrum duplex AARL G060

Thongpitak

Pumas

2020

Front. Microbiol.

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Paraquat is a non-selective fast-acting herbicide used to control weeds in agricultural crops. Many years of extensive use has caused environmental pollution and food toxicity. This agrochemical degrades slowly in nature, adsorbs onto clay lattices, and may require environmental remediation. Studies have shown that biosynthesized manganese oxide (BioMnO x) successfully degraded toxic synthetic compounds such as bis-phenol A and diclofenac, thus it has potential for paraquat degradation. In this experiment, P. duplex AARL G060 generated low (9.03 mg/L) and high (42.41 mg/L) concentrations of BioMnO x. The precipitated BioMnO x was observed by scanning electron microscopy (SEM), and the elemental composition was identified as Mn and O by energy-dispersive x-ray spectroscopy (EDS). The potential for BioMnO x to act as a catalyst in the degradation of paraquat was evaluated under three treatments: (1) a negative control (deionized water), (2) living alga with low BioMnO x plus hydrogen peroxide, and (3) living alga with high BioMnO x plus hydrogen peroxide. The results indicate that BioMnO x served as a catalyst in the Fenton-like reaction that could degrade more than 50% of the paraquat within 72 h. A kinetic study indicated that paraquat degradation by Fenton-like reactions using BioMnO x as a catalyst can be described by pseudo-first and pseudosecond order models. The pH level of the BioMnO x catalyst was neutral at the end of the experiment. In conclusion, BioMnO x is a viable and environmentally friendly catalyst to accelerate degradation of paraquat and other toxic chemicals.

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Manganese Contaminant: Revolutionizing In-Situ Microbial-Assisted Remediation Approach

Kamleshiya

2024

Energy, Environment, and Sustainability

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A novel manganese oxidizing bacterium-Aeromonas hydrophila strain DS02: Mn(II) oxidization and biogenic Mn oxides generation

Cited by 91 publications

References 48 publications

Biological Manganese Removal by Novel Halotolerant Bacteria Isolated from River Water

Biological Manganese Removal by Novel Halotolerant Bacteria Isolated from River Water

Paraquat Degradation by Biological Manganese Oxide (BioMnOx) Catalyst Generated From Living Microalga Pediastrum duplex AARL G060

Manganese Contaminant: Revolutionizing In-Situ Microbial-Assisted Remediation Approach

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