Attapulgite/carbon composites as a recyclable adsorbent for antibiotics removal

Attapulgite/carbon composites as a recyclable adsorbent for antibiotics removal We evaluated the adsorption performance of attapulgite/carbon (APT/C) composite as reusable adsorbents for antibiotics. APT/C composite was first synthesized by one-step calcination based on the spent bleaching earth after bleaching of vegetable oil, and followed by a thermal regeneration after adsorption of antibiotic at different temperatures. Antibiotics adsorption results revealed that APT/C composites prepared at 300 °C exhibited high adsorption capacity and fast equilibrium. Thermal regeneration proved to be an efficient methodology for recycling the spent antibiotic-loaded APT/C composites. After the ten-time continuous adsorption-calcination process, the removal ratios of the recycled adsorbents still retained around 67.3% and 62.9% for chlortetracycline and tetracycline, respectively. The conjugation of the adsorption and regeneration results suggested that combining the advantages of APT and carbon species provided a feasible strategy to fabricate a promising adsorbent with the desirable adsorption and regeneration properties for removal of antibiotics in the future. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Korean Journal of Chemical Engineering Springer Journals

Attapulgite/carbon composites as a recyclable adsorbent for antibiotics removal

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Publisher
Springer Journals
Copyright
Copyright © 2018 by Korean Institute of Chemical Engineers, Seoul, Korea
Subject
Chemistry; Industrial Chemistry/Chemical Engineering; Catalysis; Materials Science, general; Biotechnology
ISSN
0256-1115
eISSN
1975-7220
D.O.I.
10.1007/s11814-018-0066-0
Publisher site
See Article on Publisher Site

Abstract

We evaluated the adsorption performance of attapulgite/carbon (APT/C) composite as reusable adsorbents for antibiotics. APT/C composite was first synthesized by one-step calcination based on the spent bleaching earth after bleaching of vegetable oil, and followed by a thermal regeneration after adsorption of antibiotic at different temperatures. Antibiotics adsorption results revealed that APT/C composites prepared at 300 °C exhibited high adsorption capacity and fast equilibrium. Thermal regeneration proved to be an efficient methodology for recycling the spent antibiotic-loaded APT/C composites. After the ten-time continuous adsorption-calcination process, the removal ratios of the recycled adsorbents still retained around 67.3% and 62.9% for chlortetracycline and tetracycline, respectively. The conjugation of the adsorption and regeneration results suggested that combining the advantages of APT and carbon species provided a feasible strategy to fabricate a promising adsorbent with the desirable adsorption and regeneration properties for removal of antibiotics in the future.

Journal

Korean Journal of Chemical EngineeringSpringer Journals

Published: May 25, 2018

References

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