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Chen W, Liu Z, Dai X, Zhao Z, Du B, Zhang K, Ma D, Fan L, Huang X. Transformation of tetracycline by multipurpose Fe-Mn-Cu nano-composite oxide: Dual-synergies and dual-mechanisms. JOURNAL OF HAZARDOUS MATERIALS 2023; 454:131400. [PMID: 37099908 DOI: 10.1016/j.jhazmat.2023.131400] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 03/28/2023] [Accepted: 04/11/2023] [Indexed: 05/19/2023]
Abstract
The interaction between tetracycline (TTC) and mixed metallic oxides remains unclear, and even complexation usually is ignored. This study firstly distinguished the triple functions of adsorption, transformation and complexation in presence of Fe-Mn-Cu nano-composite metallic oxide (FMC) on TTC. Rapid adsorption and faint complexation initiated the transformation that dominated the entire reactions at 180 min, which completed TTC removal (up to 99.04%) synergistically within 48 h. Environmental factors (dosage, pH and coexisting ions) had small influence on TTC removal, which primarily depended on the stable transformation characteristics of FMC. Kinetic models incorporating pseudo-second-order kinetics and transformation reaction kinetics demonstrated that the surface sites of FMC promoted electron transfer process through chemical adsorption and electrostatic attraction. ProtoFit program coupled with characterization methods concluded that Cu-OH was the main reaction site of FMC where the protonated surface favored to generate·O2-. Meanwhile, three metal ions developed simultaneous mediated transformation reactions on TTC in liquid phase, and·O2- induced the production of·OH. The transformed products were subjected to toxicity assessment, which had lost antimicrobial properties toward Escherichia coli. Insights gained from this study can refine the dual mechanisms of multipurpose FMC in solid and liquid phases underlying TTC transformation.
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Affiliation(s)
- Wei Chen
- College of Civil Engineering, Sichuan Agricultural University, Chengdu 611830, China; Sichuan Higher Education Engineering Research Center for Disaster Prevention and Mitigation of Village Construction, Sichuan Agricultural University, Chengdu 611830, China
| | - Zhujun Liu
- College of Civil Engineering, Sichuan Agricultural University, Chengdu 611830, China.
| | - Xinning Dai
- College of Civil Engineering, Sichuan Agricultural University, Chengdu 611830, China
| | - Zhihan Zhao
- College of Civil Engineering, Sichuan Agricultural University, Chengdu 611830, China
| | - Bin Du
- Students Innovation and Entrepreneurship Center, Enrollment and Employment Department, Sichuan Agricultural University, Chengdu 611130, China
| | - Ke Zhang
- College of Civil Engineering, Sichuan Agricultural University, Chengdu 611830, China; Sichuan Higher Education Engineering Research Center for Disaster Prevention and Mitigation of Village Construction, Sichuan Agricultural University, Chengdu 611830, China
| | - Dandan Ma
- College of Civil Engineering, Sichuan Agricultural University, Chengdu 611830, China; Sichuan Higher Education Engineering Research Center for Disaster Prevention and Mitigation of Village Construction, Sichuan Agricultural University, Chengdu 611830, China
| | - Liangqian Fan
- College of Civil Engineering, Sichuan Agricultural University, Chengdu 611830, China; Sichuan Higher Education Engineering Research Center for Disaster Prevention and Mitigation of Village Construction, Sichuan Agricultural University, Chengdu 611830, China
| | - Xianbin Huang
- College of Civil Engineering, Sichuan Agricultural University, Chengdu 611830, China; Sichuan Higher Education Engineering Research Center for Disaster Prevention and Mitigation of Village Construction, Sichuan Agricultural University, Chengdu 611830, China.
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