期刊
APPLIED SCIENCES-BASEL
卷 2, 期 2, 页码 513-524出版社
MDPI
DOI: 10.3390/app2020513
关键词
magnetic amphiphilic systems; chrysotile; biodiesel wastewater; breaking emulsions process
类别
资金
- CNPq
- FAPEMIG
- PRPq-UFMG
- CAPES
In this work, new magnetic amphiphilic composites were prepared by chemical vapor deposition with ethanol on the surface of hydrophilic natural chrysotile matrix containing Fe catalyst. XRD, Raman, Mossbauer and SEM analyses suggest the formation of a complex nanostructured material composed of hydrophobic carbon nanotubes/nanofibers grown on the hydrophilic surface of the MgSi fiber mineral and the presence of Fe metallic nanoparticles coated by carbon. These nanostructured particles show amphiphilic properties and interact very well with both oil and aqueous phases. When added to emulsions the amphiphilic particles locate on the oil/water interface and, under a magnetic field, the oil droplets collapsed leading to the separation of the aqueous and oil phases. Preliminary work showed excellent results on the use of these particles to break wastewater emulsions in the biodiesel process.
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