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Volume 7, Issue 6(Suppl) J Chromatogr Sep Tech
ISSN: 2157-7064 JCGST, an open access journal
Page 61
Notes:
Separation Techniques 2016
September 26-28, 2016
conferenceseries.com
Separation Techniques
September 26-28, 2016 Valencia, Spain
2nd International Conference and Expo on
Fabrication of electrospun nanofiber mat for tetracycline adsorption and other membrane
separation processes
Liu Qing
Chinese Academy of Sciences, China
Electrospinning is a novel technique to produce nanofibers with a diameter of 100 nm to >1. In electrospinning, when a
high voltage is supplied to a liquid droplet, a charged liquid jet is formed. The bending instability between the jets cause
thinning and elongation of the fibers, subsequently, resulting in formation of uniform nanofibers, which have high specific
area, porosity and interconnecting pore structures, thus, are suitable for energy and environmental applications. In our work,
a novel Fe3O4/polyacrylonitrile (PAN) composite nanofiber mat was prepared by a simple two-step process, electrospinning
and solvothermal method. Surface characterization demonstrated formation of a uniform cubic phase Fe3O4 nanoparticles
coating (about 20 nm in thickness) on the PAN nanofiber backbone. The coating doubled the specific surface area of NFs,
from 8.4-17.8 m2g-1, as confirmed by nitrogen sorption isotherm analysis. To evaluate the feasibility of Fe3O4/PAN composite
NFs as a potential adsorbent for antibiotic removal, batch adsorption experiments were conducted using tetracycline (TC) as
the model antibiotic molecule. The results showed that Fe3O4/PAN composite NFs was effective in removing tetracycline with
no impactful loss of Fe at pH regime of environmental interest (4 to 8). The maximum adsorption capacity calculated from
Langmuir isotherm model was 257.07 mg g-1 at pH 6. The composite NFs also exhibited good regenerability over repeated
adsorption/desorption cycles. This highly effective and novel adsorbent can be easily modularized and separated, promising its
huge potential in drinking and waste water treatment for antibiotic removal.
Biography
Liu Qing is currently pursuing her PhD at Institute of Urban Environment, Chinese Academy of Sciences, China. She has received her Master in Chemical
Engineering at National University of Singapore. Her current research focus is in solving environmental issues such as water contamination and recovery, air
pollution, using membrane separation techniques, in particular, by electrospinning. She has published 5 papers in reputed journals.
Liu Qing, J Chromatogr Sep Tech 2016, 7:6(Suppl)