Adsorption of sulfonamides by magnetic multiwall carbon nanotubes

CAO Hui; CHEN Xiao-zhen; ZHU Yan; LI Zu-guang

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Article Navigation > New Carbon Mater. > 2015 > 30(6): 572-578

CAO Hui, CHEN Xiao-zhen, ZHU Yan, LI Zu-guang. Adsorption of sulfonamides by magnetic multiwall carbon nanotubes. New Carbon Mater., 2015, 30(6): 572-578.

Citation:

CAO Hui, CHEN Xiao-zhen, ZHU Yan, LI Zu-guang. Adsorption of sulfonamides by magnetic multiwall carbon nanotubes. New Carbon Mater., 2015, 30(6): 572-578.

CAO Hui, CHEN Xiao-zhen, ZHU Yan, LI Zu-guang. Adsorption of sulfonamides by magnetic multiwall carbon nanotubes. New Carbon Mater., 2015, 30(6): 572-578.

Citation:

CAO Hui, CHEN Xiao-zhen, ZHU Yan, LI Zu-guang. Adsorption of sulfonamides by magnetic multiwall carbon nanotubes. New Carbon Mater., 2015, 30(6): 572-578.

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Adsorption of sulfonamides by magnetic multiwall carbon nanotubes

1.
Zhejiang Institute of Quality Inspection Science, Hangzhou 310018, China;
2.
Department of Chemistry, Zhejiang University, Hangzhou 310028, China;
3.
College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310014, China

Funds: Science and Technology Major Scientific Instruments and Equipment Development project (2012YQ09022903); Undergraduate College and University of Young Academic Climbing Project of Zhejiang Province (Pd2013016); Quality and Technical Supervision System Research Project of Zhejiang Province (20150204); Science and Technology Program of Zhejiang Province (2015C37019).

Received Date: 2015-09-20
Accepted Date: 2016-01-05
Rev Recd Date: 2015-11-29
Publish Date: 2015-12-28

Abstract

Abstract

Magnetic multiwall carbon nanotubes (MWCNTs) were prepared by soaking purified MWCNTs in a solution containing ammonium ferrous sulfate and ammonium ferric sulfatewith a pH of 11-12 at 50 ℃ for 30 min, and were used as an adsorbent for sulfonamides. Processing parameters affecting the adsorption efficiency were investigated, including the amount of adsorbent, pH value, adsorption time and the concentration of the sulfonamide solution. The removal of sulfonamides reached 85% when the ratio of the magnetic MWCNTs to the solution was 1 mg/mL, the pH value was 6 and the time of adsorption was 30 min. Adsorption kineticsfollowed apseudo-second order model and the Freundlich equation described the adsorption isotherm well. Desorption tests of the magnetic MWCNTs showed that the best elution was in ammonia-methanol (v/v, 5:95). The recovery of sulfonamides was more than 80% after ten desorption and adsorption cycles, indicating that the magnetic MWCNTs can be reused.
- Magnetic multiwalled carbon nanotubes,
- Sulfonamides,
- Adsorption,
- Desorption

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References(23)

References

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