Comprehensive evaluation of adsorption performances of carbonaceous materials for sulfonamide antibiotics removal
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RESEARCH ARTICLE
Comprehensive evaluation of adsorption performances of carbonaceous materials for sulfonamide antibiotics removal Bin Luo 1,2 & Guohe Huang 1,2
&
Yao Yao 2 & Chunjiang An 3 & Wei Li 4 & Rubing Zheng 4 & Kai Zhao 2
Received: 21 May 2020 / Accepted: 23 August 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Sulfonamide antibiotics have highly toxic effects on humans and other organisms within the food chain. Adsorption by various carbonaceous materials is an effective method for removing them from the aqueous environment. Batch adsorption experiments were conducted between adsorbents and sulfamethoxazole (SMX) by studies of characterization, isotherm model, and kinetic model. The adsorption performances and mechanism of fifteen carbonaceous materials to remove SMX have been comprehensively evaluated. Results of the characterization showed that not only porosity, but also surface chemistry plays an important role in the adsorption process. Changes in the type and quantity of functional groups before and after adsorption are positive for the recyclability of carbonaceous materials. Moreover, kinetic studies showed that the adsorption process followed the pseudosecond-kinetic model and the intra-particle diffusion model. Four adsorbents (i.e., W-GAC, 3M-GAC, GP, and PAC) in this study have the best performance in each corresponding category in terms of the adsorption of SMX. Therefore, the results provide an indispensable reference for evaluating the adsorption performances of a variety of carbonaceous materials, and thus can support the selection of adsorbents for different applications. Keywords Sulfonamide antibiotics . Adsorption . Activated carbons . Graphene-based materials . Household water purifiers
Introduction In recent years, various types of antibiotics have been continuously swarmed into the ecosystem through multiple pathways, such as antibiotic production, sewage discharge, sludge
utilization, improper disposal of unused or expired drugs, and manure and wastewater from aquaculture plants (Larsson et al. 2007; Yu et al. 2016; An et al. 2017; Yao et al. 2020). Most antibiotics (e.g., tetracyclines, macrolides, sulfonamides, penicillins, and quinolones) are discharged in their
Highlights • Various carbonaceous materials have been ranked by their adsorption performances. • Adsorbents’ reusability is significantly affected by changes in functional groups. • Results are valuable for the selection of adsorbents for different applications. Responsible editor: Tito Roberto Cadaval Jr Electronic supplementary material The online version of this article (https://doi.org/10.1007/s11356-020-10612-7) contains supplementary material, which is available to authorized users. * Guohe Huang [email protected] 1
State Key Joint Laboratory of Environmental Simulation and Pollution Control, CEEER-URBNU, College of Environment, Beijing Normal University, Beijing 100875, China
2
Faculty of Engineering and Applied Science, University of Regina, Regina, Saskatchewan S4S 0A2, Canad
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