Is froth flotation a potential scheme for microplastics removal? Analysis on flotation kinetics and surface characteristics

Zhang, Yingshuang; Jiang, Hongru; Bian, Kai; Wang, Hui; Wang, Chongqing

doi:10.1016/j.scitotenv.2021.148345

Cited by 39 publications

(11 citation statements)

References 63 publications

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“…Due to significant threats, it is imperative to remove the released MPs from aqueous environment. Our previous work proves that froth flotation is an effective method for MPs removal in aqueous environment ( Zhang et al, 2021b ; Jiang et al, 2022b ). A tentative process for removing the released MPs from DFMs by froth flotation was proposed.…”

Section: Resultsmentioning

confidence: 62%

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Insight into the microplastics release from disposable face mask: Simulated environment and removal strategy

Jiang

Zhang

et al. 2022

Chemosphere

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Section: Resultsmentioning

confidence: 62%

“…An efficient, green, and cost-saving treatment was required. Froth flotation is mainly used for beneficiation and has great potential in the removal of MPs ( Zhang et al, 2021b ).…”

Section: Introductionmentioning

confidence: 99%

Insight into the microplastics release from disposable face mask: Simulated environment and removal strategy

Jiang

Zhang

et al. 2022

Chemosphere

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“…An advanced treatment could provide a significantly different treatment process to improve effluent quality before discharge. The tertiary treatment technologies could be used (Zhang et al 2021a , b , c ), including denitrifying biological aerated filters (BAFs), gravity sand filtration (GSF), disc filters, and dissolved air flotation (DAF), membrane bioreactors (MBRs), and advanced oxidation processes (AOPs). The primary and secondary treatments have already removed most of the MP from wastewaters; tertiary treatment is likely to have less impact on MP removal.…”

Section: Microplastics Removal Efficiency In Advanced Wastewater Trea...mentioning

confidence: 99%

Various advanced wastewater treatment methods to remove microplastics and prevent transmission of SARS-CoV-2 to airborne microplastics

Zahmatkesh

Klemeš

Bokhari

et al. 2022

Int. J. Environ. Sci. Technol.

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Microplastics (MPs) and SARS-CoV-2 interact due to their widespread presence in our environment and affect the virus' behaviour indoors and outdoors. Therefore, it is necessary to study the interaction between MPs and SARS-CoV-2. The environmental damage caused by MPs is increasing globally. Emerging pollutants may adversely affect organisms, especially sewage, posing a threat to human health, animal health, and the ecological system. A significant concern with MPs in the air is that they are a vital component of MPs in the other environmental compartments, such as water and soil, which may affect human health through ingesting or inhaling. This work introduces the fundamental knowledge of various methods in advanced water treatment, including membrane bioreactors, advanced oxidation processes, adsorption, etc., are highly effective in removing MPs; they can still serve as an entrance route due to their constantly being discharged into aquatic environments. Following that, an analysis of each process for MPs' removal and mitigation or prevention of SARS-CoV-2 contamination is discussed. Next, an airborne microplastic has been reported in urban areas, raising health concerns since aerosols are considered a possible route of SARS-CoV-2 disease transmission and bind to airborne MP surfaces. The MPs can be removed from wastewater through conventional treatment processes with physical processes such as screening, grit chambers, and pre-sedimentation.

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“… 9 − 12 The methodologies used to remove MP can be classified into two main groups: the more traditional methods, such as coagulation and filtration, 13 − 15 and emerging ones that remove MP with extremely high efficiencies. 16 − 18 Some noteworthy methods are photocatalytic micromotors such as BiVO 4 /Fe 3 O 4 19 and Au@Ni@TiO 2 , 20 surface-functionalized microbubbles, 21 froth flotation, 22 and surface functionalization of the MP with hypochlorite (ClO – ) 23 or magnetite (Fe 3 O 4 ). 24 …”

Section: Introductionmentioning

confidence: 99%

“…Microplastics (MP) are defined by their size (<5 mm) and are an emerging type of debris that can be found in rivers, oceans, the atmosphere, soil, and even in animals and humans. − Additionally, these types of solid pollutants, which have different chemical compositions with polyethylene MP being the most abundant type (54.5%), , can behave as a vector for metals and metalloids that are adsorbed on to the polymer surface. − This issue has attracted a lot of interest in different scientific fields performing research that aims to prevent, reduce, and remove these pollutants from the environment. − The methodologies used to remove MP can be classified into two main groups: the more traditional methods, such as coagulation and filtration, − and emerging ones that remove MP with extremely high efficiencies. − Some noteworthy methods are photocatalytic micromotors such as BiVO 4 /Fe 3 O 4 and Au@Ni@TiO 2 , surface-functionalized microbubbles, froth flotation, and surface functionalization of the MP with hypochlorite (ClO – ) or magnetite (Fe 3 O 4 ) …”

Section: Introductionmentioning

confidence: 99%

Superhydrophobic 304 Stainless Steel Mesh for the Removal of High-Density Polyethylene Microplastics

et al. 2022

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Microplastics are a global issue that affects the environment, economy, as well as human health. Herein, we present a superhydrophobic 304 stainless steel mesh obtained by chemical etching followed by a liquid-phase deposition of lauric acid that can be used for microplastic removal. Field emission scanning electron microscopy (FE-SEM) and high-resolution X-ray photoelectron spectroscopy (HR-XPS), among other techniques, were used to identify the hierarchical structure and chemical composition of the surface. They revealed that iron laurate decreased the surface free energy. The 304 stainless steel mesh was superhydrophobic (169°) and superoleophilic (0°). Taking advantage of these wetting properties, we showed an innovative use of these superhydrophobic surfaces in the removal of microplastics. Additionally, we analyzed the removal efficiency from a surface and colloidal point of view that allowed us to explain and clarify why microplastics can also be removed by their wetting properties. The loss of a double electrostatic cloud between the microplastics and the predominance of van der Waals interactions in the organic phase promote the removal of these persistent pollutants from water.

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Is froth flotation a potential scheme for microplastics removal? Analysis on flotation kinetics and surface characteristics

Cited by 39 publications

References 63 publications

Insight into the microplastics release from disposable face mask: Simulated environment and removal strategy

Insight into the microplastics release from disposable face mask: Simulated environment and removal strategy

Various advanced wastewater treatment methods to remove microplastics and prevent transmission of SARS-CoV-2 to airborne microplastics

Superhydrophobic 304 Stainless Steel Mesh for the Removal of High-Density Polyethylene Microplastics

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