1
Environment Research Center, Isfahan University of Medical Sciences (IUMS), Isfahan, Iran, and Department of Environmental Health Engineering, IUMS, Isfahan, Iran
2
Gas Division, Research Institute of Petroleum Industry (RIPI), Department of Nano Technology, Tehran, Iran
Abstract
Aims: The ability of raw and recycled multi- and single-walled carbon nanotubes (MWCNT and SWCNT) for xylene adsorption from aqueous solutions was evaluated. Materials and Methods: Batch adsorption experiments were conducted in 110 ml glass bottles. Gas chromatography-mass spectrometry was used for xylene measurement and the carbon nanotube characteristics were evaluated with the help of a transmission electron microscope. Results: With a carbon nanotube dose of 1 g/l, xylene concentration of 10 mg/l, pH 7, and a contact time of 10 minutes, the equilibrium adsorption capacity (q e (mg/g)) of SWCNT was 9.2 mg/g, which was higher than that for MWCNT (8.9 mg/g). The SWCNT revealed a better performance for xylene sorption than the MWCNT. Results of a desorption study showed that xylene adsorbed onto the SWCNT and MWCNT can be easily desorbed at 105 ± 2°C. Conclusions: It is concluded that recycled carbon nanotubes on heating for the first time, show a better performance for xylene adsorption than when they are raw. The SWCNT are efficient as xylene adsorbents in an environmental pollution cleanup.
Pourzamani,H , Bina,B , Amin,M M and Rashidi,A . (2012). Performance of raw and regenerated multi- and single-walled carbon nanotubes in xylene removal from aqueous solutions. International Journal of Environmental Health Engineering (IJEHE), 1(March), 20-23.
MLA
Pourzamani,H , , Bina,B , , Amin,M M , and Rashidi,A . "Performance of raw and regenerated multi- and single-walled carbon nanotubes in xylene removal from aqueous solutions", International Journal of Environmental Health Engineering (IJEHE), 1, March, 2012, 20-23.
HARVARD
Pourzamani H, Bina B, Amin M M, Rashidi A. (2012). 'Performance of raw and regenerated multi- and single-walled carbon nanotubes in xylene removal from aqueous solutions', International Journal of Environmental Health Engineering (IJEHE), 1(March), pp. 20-23.
CHICAGO
H Pourzamani, B Bina, M M Amin and A Rashidi, "Performance of raw and regenerated multi- and single-walled carbon nanotubes in xylene removal from aqueous solutions," International Journal of Environmental Health Engineering (IJEHE), 1 March (2012): 20-23,
VANCOUVER
Pourzamani H, Bina B, Amin M M, Rashidi A. Performance of raw and regenerated multi- and single-walled carbon nanotubes in xylene removal from aqueous solutions. Int. J. Environ. Health Eng.. 2012;1(March):20-23.
International Journal of Environmental Health Engineering (IJEHE)