Intensification of the separation of CuO nanoparticles from their highly diluted suspension using a foam flotation column with S type internal

Foam flotation is a promising technique for recovering nanoparticles from their highly diluted suspensions. In this work, a novel S type internal was developed to intensify the foam flotation of CuO nanoparticles (357.6 nm in average particle size) from their suspension of 6.2 × 10 −2  mmol/L. By en...

Full description

Saved in:
Bibliographic Details
Published in:Journal of nanoparticle research : an interdisciplinary forum for nanoscale science and technology 2015-10, Vol.17 (10), p.1-11, Article 401
Main Authors: Hu, Nan, Li, Rui, Wu, Zhao-liang, Huang, Di, Li, Hong Zhen
Format: Article
Language:English
Subjects:
Air flow
Ammonium
Ammonium bromides
BROMIDES
Characterization and Evaluation of Materials
Chemistry and Materials Science
COPPER OXIDE
Dilution
Enrichment
FLOTATION
Foams
Inorganic Chemistry
Lasers
Materials Science
Nanoparticles
Nanotechnology
Optical Devices
Optics
PARTICLE SIZE AND SHAPE
PARTICLES
Photonics
Physical Chemistry
Recovering
Recycled
Research Paper
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Foam flotation is a promising technique for recovering nanoparticles from their highly diluted suspensions. In this work, a novel S type internal was developed to intensify the foam flotation of CuO nanoparticles (357.6 nm in average particle size) from their suspension of 6.2 × 10 −2  mmol/L. By enhancing foam drainage, the S type internal increased the enrichment ratio of CuO nanoparticles by 139.3 ± 12.5 % without significantly affecting their recovery percentage. Under the optimal conditions of Cetyl trimethyl ammonium bromide (CTAB) concentration 0.45 mmol/L, superficial airflow rate 2.6 mm/s, and volumetric feed rate 1.0 mL/min, the enrichment ratio and recovery percentage of CuO nanoparticles reached 81.6 ± 4.1 and 95.4 ± 4.9 %, respectively, using the foam flotation column with the S type internal. Furthermore, about 95 % CTAB could be recycled by recovering CTAB from the foamate and the residual solution. The recovered CuO nanoparticles were associated with CTAB molecules, so they had better dispersity and dispersion stability than the starting CuO nanoparticles. Therefore, they would have good reusability.
ISSN:1388-0764
1572-896X
DOI:10.1007/s11051-015-3205-0