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Efficient degradation of sulfamethazine in simulated and real wastewater at slightly basic pH values using Co-SAM-SCS /H2O2 Fenton-like system
Abstract
The presence of antibiotics in aquatic environments has attracted global concern. Fenton process is an attractive yet challenging method for antibiotics degradation, especially when such a reaction can be conducted at neutral pH values. In this study, a novel composite Fe/Co catalyst was synthesized via the modification of steel converter slag (SCS) by salicylic acid-methanol (SAM) and cobalt nitrate (Co(NO3)2). The catalysts were characterized by N2-Brunauer-Emmett-Teller (BET), X-ray diffraction (XRD), Fourier transform infrared (FT-IR), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). The results indicated that the Co-SAM-SCS/H2O2 Fenton-like system was very effective for sulfamethazine (SMZ) degradation at a wide pH range. At initial pH of 7.0, the degradation rate of SMZ in Co-SAM-SCS/H2O2 system was 2.48, 3.20, 6.18, and 16.21 times of that in Fe-SAM-SCS/H2O2, SAM-SCS/H2O2, Co(NO3)2/H2O2 and SCS/H2O2 system, respectively. The preliminary analysis suggested that high surface area of Co-SAM-SCS sample and synergistic effect between introduced Co and SAM-SCS are responsible for the efficient catalytic activity. During the degradation, three main intermediates were identified by high performance liquid chromatography-mass spectrometry (HPLC-MS) analysis. Based on this, a possible degradation pathway was proposed. The SEM images, XRD patterns and XPS spectra before and after the reactions demonstrate that the crystal and chemical structure of Co-SAM-SCS after five cycles are almost unchanged. Besides, the Co-SAM-SCS presented low iron and cobalt leaching (0.17 mg/L and 2.36 mg/L, respectively). The studied Fenton-like process also showed high degradation of SMZ in river water and municipal wastewater. The progress will bring valuable insights to develop high-performance heterogeneous Fenton-like catalysts for environmental remediation.
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Gong, J.-L., Wang, B., Zeng, G.-M., Yang, C.-P., Niu, C.-G., Niu, Q.-Y., Zhou, W.-J., & Liang, Y. (2009) · Journal of Hazardous Materials · doi:10.1016/j.jhazmat.2008.09.072 · Cited by 1,057
Self-citationYang, Y., Lu, X., Jiang, J., Ma, J., Liu, G., Cao, Y., Liu, W., Li, J., Pang, S., Kong, X., et al. (2017) · Water Research · doi:10.1016/j.watres.2017.03.054 · Cited by 637
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Nguyen, C. H., Fu, C.-C., & Juang, R.-S. (2018) · Journal of Cleaner Production · doi:10.1016/j.jclepro.2018.08.110 · Cited by 594
Metal-organic frameworks for highly efficient heterogeneous Fenton-like catalysis
Cheng, M., Lai, C., Liu, Y., Zeng, G., Huang, D., Zhang, C., Qin, L., Hu, L., Zhou, C., & Xiong, W. (2018) · Coordination Chemistry Reviews · doi:10.1016/j.ccr.2018.04.012 · Cited by 527
Self-citationLi, Y., Bu, J., Sun, Y., Huang, Z., Zhu, X., Li, S., Chen, P., Tang, Y., He, G., & Zhong, S. (2025) · Separation and Purification Technology · doi:10.1016/j.seppur.2024.129945 · Cited by 527
Yang, Y., Li, X., Zhou, C., Xiong, W., Zeng, G., Huang, D., Zhang, C., Wang, W., Song, B., Tang, X., et al. (2020) · Water Research · doi:10.1016/j.watres.2020.116200 · Cited by 518
Self-citationLi, L., Lai, C., Huang, F., Cheng, M., Zeng, G., Huang, D., Li, B., Liu, S., Zhang, M., Qin, L., et al. (2019) · Water Research · doi:10.1016/j.watres.2019.05.081 · Cited by 466
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Metadata
- Authors
- Cheng, M., Zeng, G., Huang, D., Lai, C., Liu, Y., Zhang, C., Wan, J., Hu, L., Zhou, C., & Xiong, W.
- Venue
- Water Research
- Publisher
- Elsevier BV
- Published
- 2018-07
- Volume
- 138
- Pages
- 7-18
- ISSN
- 0043-1354 (ISSN-L)
- OpenAlex
- W2790280697
- Cited by
- 248
- References
- 2
- FWCI
- 15.17
- Type
- journal article
- Language
- en
- Open access
- closed
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- Cheng, M., Zeng, G., Huang, D., Lai, C., Liu, Y., Zhang, C., Wan, J., Hu, L., Zhou, C., & Xiong, W. (2018). Efficient degradation of sulfamethazine in simulated and real wastewater at slightly basic pH values using Co-SAM-SCS /H2O2 Fenton-like system. Water Research. https://doi.org/10.1016/j.watres.2018.03.022
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