Removal of Microcystis aeruginosa using nano-Fe3O4 particles as a coagulant aid

Zhang, Bo; Jiang, Dazong; Guo, Xiaochen; He, Yiliang; Ong, Choon Nam; Ya-tong, XU; Pal, Ananya

doi:10.1007/s11356-015-5053-y

Cited by 14 publications

(2 citation statements)

References 40 publications

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“…Now, a dilemma had arisen in accounting for the magnetic moment of a ferrite such as magnetite, Fe3O4 (or FeO.Fe2O3) (Boczkaj and Fernandes, 2017;Cruz et al, 2017;Chella et al, 2017;Pan et al, 2017;Zhang et al, 2015). The theoretical number of unpaired electrons for that formula was 14, that is, 5 each for each of the Fe 3+ ions and 4 for the Fe 2+ ion.…”

Section: Ferrimagnetismmentioning

confidence: 99%

Magnetic field generation in the water treatment perspectives: An overview

Ghernaout

2018

Int. j. adv. appl. sci.

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In the last few decades, many researches on the effects of magnetic field (MF) on water have been reported; however, still many arguments and doubts are present. This review aims to focus on the basic properties implied in magnetic phenomena generation at the atomic and electronic level of matter. Fundamentals of magnetism and origin of magnetic effect will be discussed. Both paramagnetism and diamagnetism are very crucial in the examination of atomic and molecular structure; however, these effects are very weak and have no real practical importance. Large scale magnetic effects resulting in commercially important materials appear in atoms and ions of only a few metallic elements notably Fe, Co, Ni, and some of the rare earths. In alloys or oxides of some materials containing these elements and some neighboring ions such as Mn, there is a crucial improvement of the atomic spin effect. This enhancement comes about from the cooperative interaction of large numbers (10 13 -10 14 ) of these atomic spins producing a region where all atomic spins within it are aligned parallel (positive exchange interaction). These materials are called ferromagnetic. In spite of the achieved performances on MF technologies, there is a huge work to be performed for better understanding and controlling of magnetic water treatment.

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Section: Ferrimagnetismmentioning

confidence: 99%

Magnetic field generation in the water treatment perspectives: An overview

Ghernaout

2018

Int. j. adv. appl. sci.

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“…have been studied. Metal nanoparticles such as Cu 2 O NPs [13], Fe 3 O 4 NPs [14], TiO 2 NPs [15], ZnO NPs [16], Ag NPs [17], etc. have been widely used for controling and eliminating the toxin of M. aeruginosa.…”

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confidence: 99%

Cu2ONPs/DIATOMITE INHIBITS GROWTH AND REMOVAL OF MICROCYSTIS AERUGINOSA

Thi¹,

Thi²,

Dinh³

et al. 2021

Vietnam J. Sci. Technol.

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Cu2O nanoparticles (Cu2ONPs) with particle size of ~27.4 nm deposited on diatomite (Cu2ONPs/diatomite), a new low-cost material has been used to investigate growth inhibit, and bloom preventation of cyanobacteria in eutrophic waters. Diatomite collected from natural mines was also used in the experiments. Microcystis aeruginosa strain originated from Bac Lieu shrimp pond was isolated and cultured in Z8 medium. Experiments were conducted by exposing M. aeruginosa to Cu2ONPs/diatomite and diatomite at concentrations of 0.1, 0.2, and 0.5 g/L for 72 hours and 120 hours. The results showed that the concentration of 0.5 g/L in 120 hours, Cu2ONPs/diatomite was more effective in inhibiting and removing of M. aeruginosa cells than diatomite. Therefore, Cu2ONPs/diatomite could be used as a promising material for removing cyanobacterial bloom in water for aquaculture.

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