Nanoparticle affinity for natural soils: a functional assay for determining particle attachment efficiency in complex systems

2020 ◽  
Vol 7 (6) ◽  
pp. 1719-1729
Author(s):  
Amalia A. Turner ◽  
Nicholas M. K. Rogers ◽  
Nicholas K. Geitner ◽  
Mark R. Wiesner
Keyword(s):  
Complex Systems ◽  
Engineered Nanomaterials ◽  
Functional Assay ◽  
Reference Systems ◽  
Complex Media ◽  
Natural Soils ◽  
Attachment Efficiency ◽  
Particle Attachment

Few standardized methods and reference systems have been established for evaluating the behavior of engineered nanomaterials in complex media like natural soils.

scholarly journals A critical evaluation of short columns for estimating the attachment efficiency of engineered nanomaterials in natural soils

2021 ◽  
Author(s):  
Knapp Karin Norrfors ◽  
Vesna Micić ◽  
Olga Borovinskaya ◽  
Frank von der Kammer ◽  
Thilo Hofmann ◽  
...  
Keyword(s):  
Porous Media ◽  
Theoretical Approach ◽  
Critical Evaluation ◽  
Packed Columns ◽  
Engineered Nanomaterials ◽  
Natural Soils ◽  
Attachment Efficiency ◽  
Short Columns ◽  
Homogeneous Porous Media

Short, saturated packed columns are used frequently to estimate the attachment efficiency (α) of engineered nanomaterials (ENMs) in relatively homogeneous porous media, but a combined experimental and theoretical approach to...

Measuring Nanoparticle Attachment Efficiency in Complex Systems

2017 ◽  
Vol 51 (22) ◽  
pp. 13288-13294 ◽  
Author(s):  
Nicholas K. Geitner ◽  
Niall J. O’Brien ◽  
Amalia A. Turner ◽  
Enda J. Cummins ◽  
Mark R. Wiesner
Keyword(s):  
Complex Systems ◽  
Attachment Efficiency

Bubble particle attachment efficiency

1994 ◽  
Vol 7 (5-6) ◽  
pp. 657-665 ◽  
Author(s):  
D. Hewitt ◽  
D. Fornasiero ◽  
J. Ralston
Keyword(s):  
Attachment Efficiency ◽  
Particle Attachment

scholarly journals Effect of Comminution Methods on Low-Rank Coal Bubble–Particle Attachment/Detachment: Implications for Flotation

Minerals ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 452 ◽  
Author(s):  
Guoqiang Rong ◽  
Yangchao Xia ◽  
Youfei Zhang ◽  
Fangyu Guo ◽  
Dongyue Wang ◽  
...  
Keyword(s):  
Morphological Characteristics ◽  
Bubble Surface ◽  
Diameter Ratio ◽  
Low Rank ◽  
Low Rank Coal ◽  
Attachment Efficiency ◽  
Coal Flotation ◽  
Coal Particles ◽  
Wrap Angle ◽  
Particle Attachment

The floatability of fine low-rank coal particles can be greatly influenced by their morphological characteristics, such as shape and surface roughness. In this study, the attachment efficiency and detachment amplitude of fine low-rank coal particles produced by various comminution methods onto/from the bubble surface were investigated using homemade bubble–particle wrap angle and bubble–particle attachment/detachment testing systems. Results showed that the length–diameter ratio of rod-milled products was smaller than that of crushed products. The wrap angle of particles obtained by the crushed method was larger than that obtained by the rod-milled method, i.e., particles with greater length–diameter ratio showed higher attachment efficiency onto the bubble surface. Meanwhile, particles with greater length–diameter ratio exhibited a larger detachment amplitude, which suggests that it is more difficult to be detached from the bubble surface. However, rod-milled products showed lower attachment onto the bubble surface. The flotation test confirmed that the floatability ratio of crushed products was higher than that of rod-milled products, consistent with evidence from experimental analyses. This study provides a fundamental understanding of particle shapes for low-rank coal flotation by a novel research method combining the attachment efficiency and detachment amplitude of bubble–particle combinations.

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