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Processes
Volume 9
Issue 1
10.3390/pr9010028
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Article

Adsorption of Tetracycline and Sulfadiazine onto Three Different Bioadsorbents in Binary Competitive Systems

by
Raquel Cela-Dablanca
1,
Manuel Conde-Cid
2,
Gustavo Ferreira-Coelho
1,
Manuel Arias-Estévez
2,
David Fernández-Calviño
2,
Avelino Núñez-Delgado
1,*,
María J. Fernández-Sanjurjo
1 and
Esperanza Álvarez-Rodríguez
1
1
Department of Soil Science and Agricultural Chemistry, Engineering Polytechnic School, Universidade de Santiago de Compostela, 27002 Lugo, Spain
2
Department of Plant Biology and Soil Science, Faculty of Sciences, Campus Ourense, Universidade de Vigo, 32004 Ourense, Spain
*
Author to whom correspondence should be addressed.
Processes 2021, 9(1), 28; https://doi.org/10.3390/pr9010028
Submission received: 30 November 2020 / Revised: 21 December 2020 / Accepted: 22 December 2020 / Published: 24 December 2020
(This article belongs to the Special Issue Gas, Water and Solid Waste Treatment Technology)
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Abstract

Different antibiotics contained in manure, slurry, wastewater or sewage sludge are spread into the environment. The harmful effects of these antibiotics could be minimized by means of immobilization onto bioadsorbent materials. This work investigates the competitive adsorption/desorption of tetracycline (TC) and sulfadiazine (SDZ) onto pine bark, oak ash and mussel shell. The study was carried out using batch-type experiments in binary systems (with both antibiotics present simultaneously), adding 5 equal concentrations of the antibiotics (between 1 and 50 µmol L−1). The adsorption percentages were higher for TC (close to 100% onto pine bark and oak ash, and between 40 and 85% onto mussel shell) than for SDZ (75–100% onto pine bark, and generally less than 10% on oak ash and mussel shell). Pine bark performed as the best adsorbent since TC adsorption remained close to 100% throughout the entire concentration range tested, while it was between 75 and 100% for SDZ. Desorption was always higher for SDZ than for TC. The results of this study could be useful to design practices to protected environmental compartments receiving discharges that simultaneously contain the two antibiotics here evaluated, and therefore could be relevant in terms of protection of the environment and public health.
Keywords: antibiotics; competitive sorption; retention/release; sorbents antibiotics; competitive sorption; retention/release; sorbents

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MDPI and ACS Style

Cela-Dablanca, R.; Conde-Cid, M.; Ferreira-Coelho, G.; Arias-Estévez, M.; Fernández-Calviño, D.; Núñez-Delgado, A.; Fernández-Sanjurjo, M.J.; Álvarez-Rodríguez, E. Adsorption of Tetracycline and Sulfadiazine onto Three Different Bioadsorbents in Binary Competitive Systems. Processes 2021, 9, 28. https://doi.org/10.3390/pr9010028

AMA Style

Cela-Dablanca R, Conde-Cid M, Ferreira-Coelho G, Arias-Estévez M, Fernández-Calviño D, Núñez-Delgado A, Fernández-Sanjurjo MJ, Álvarez-Rodríguez E. Adsorption of Tetracycline and Sulfadiazine onto Three Different Bioadsorbents in Binary Competitive Systems. Processes. 2021; 9(1):28. https://doi.org/10.3390/pr9010028

Chicago/Turabian Style

Cela-Dablanca, Raquel, Manuel Conde-Cid, Gustavo Ferreira-Coelho, Manuel Arias-Estévez, David Fernández-Calviño, Avelino Núñez-Delgado, María J. Fernández-Sanjurjo, and Esperanza Álvarez-Rodríguez. 2021. "Adsorption of Tetracycline and Sulfadiazine onto Three Different Bioadsorbents in Binary Competitive Systems" Processes 9, no. 1: 28. https://doi.org/10.3390/pr9010028

APA Style

Cela-Dablanca, R., Conde-Cid, M., Ferreira-Coelho, G., Arias-Estévez, M., Fernández-Calviño, D., Núñez-Delgado, A., Fernández-Sanjurjo, M. J., & Álvarez-Rodríguez, E. (2021). Adsorption of Tetracycline and Sulfadiazine onto Three Different Bioadsorbents in Binary Competitive Systems. Processes, 9(1), 28. https://doi.org/10.3390/pr9010028

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