Application of biogenic iron precipitation by strain H117 for tetracycline removal: mechanism of adsorption and activati
- PDF / 3,274,647 Bytes
- 12 Pages / 595.276 x 790.866 pts Page_size
- 69 Downloads / 182 Views
RESEARCH ARTICLE
Application of biogenic iron precipitation by strain H117 for tetracycline removal: mechanism of adsorption and activation Junfeng Su 1,2 & Shuai Zhang 1,2
&
Zhijie Zheng 1,2 & Lei Xue 1,2
Received: 22 May 2020 / Accepted: 14 September 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract To date, biogenic metals have opened up a window for new applications in adsorption of contaminants. But there is still little attention to be paid in the removal of tetracycline (TC) by biogenic iron precipitation (BIP). In this paper, the BIP, from ironbased mixotrophic denitrification batch reactor, was estimated for its adsorption property of TC under various parameters to simulate the behavior in aquatic environment. The maximum adsorption capacity for TC was 195.336 mg g−1. Analyses of spectrum verified the existence of Fe3O4 and FeOOH in BIP, which was the main reason for the removal of TC. The adsorption kinetic and isotherm of TC were well fitted to Elovich and Langmuir isotherm models, respectively, indicating that the adsorption process was mainly controlled by chemical adsorption. Furthermore, we proposed a potential mechanism of adsorption: a combination of cation-π, hydrogen bonding (H-bonding), and electrostatic interaction. Additionally, the activation experiment showed that BIP could enhance the degradation of TC (more than 98.00% removal within 1.0 h) by advanced oxidation process (AOP), due to the existence of FeOOH and Fe3O4. Considering its effectiveness in both adsorption and activation performance, BIP is highlighted as an economical and eco-friendly material for TC removal and offers a promising method to resolve sludge disposal in biological treatment of iron-rich groundwater. Keywords Biogenic iron precipitation . Tetracycline antibiotic . Adsorption mechanism . Activation performance
Abbreviations TC Tetracycline BIP Biogenic iron precipitation H-bonding Hydrogen bonding AOP Advanced oxidation process TCs Tetracyclines SEM Scanning electron microscopy XRD X-ray diffraction FTIR Fourier transform infrared spectroscopy
Responsible Editor: Tito Roberto Cadaval Jr Electronic supplementary material The online version of this article (https://doi.org/10.1007/s11356-020-10857-2) contains supplementary material, which is available to authorized users. * Junfeng Su [email protected] 1
School of Environmental and Municipal Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China
2
Shaanxi Key Laboratory of Environmental Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China
HPLC PS PFO PSO
High-performance liquid chromatography Persulfate Pseudo-first order Pseudo-second order
Introduction The past 70 years have seen a rapid increase in tetracyclines (TCs) demand in the field of pharmaceutical and livestock industry (Pulicharla et al. 2017). Depending on a recent survey, TCs have become the second-largest group of antibiotics to be produced annually across the world (Pulicharla et al. 2015). However, the overus
Data Loading...
