A Review of Activation Persulfate by Iron-Based Catalysts for Degrading Wastewater

Zhi, Keke; Li, Zhe; Ma, Patrick; Tan, Yongxiang; Zhou, Yuefeng; Zhang, Weikang; Zhang, Jingxing

doi:10.3390/app112311314

Cited by 12 publications

(3 citation statements)

References 130 publications

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“…Advanced oxidation (such as UV/ photocatalysis and ozone treatment) can be used to remove organic pollutants. However, advanced oxidation technology possessed the disadvantages of higher costs and the production of intermediate products (Zhi et al, 2021). Biological treatment was a green and environmentally friendly treatment technology that used microorganisms to degrade drugs into harmless metabolites.…”

Section: Other Technologies For Removing Pharmaceutical Residues From...mentioning

confidence: 99%

Research progress on biochar-based material adsorption and removal of ibuprofen

Zhan,

Ye,

Hou

2023

Front. Environ. Sci.

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Ibuprofen, commonly used for pain relief, inflammation, and to reduce high fever, etc., is a widely available over-the-counter drug. In recent years, due to the excessive use of ibuprofen, its presence in the aquatic environments has shown a significant increasing trend, raising concerns about potential risks to environmental safety, which attracted people’s close attention. Notably, biochar, known as an environmentally friendly functional material, had been widely studied and applied for the removal of ibuprofen in water environments. According to current reports, the adsorption capacity value of biochar for IBP is between 9.69–309 mg/g, and the adsorption mechanism mainly includes π-π stacking, hydrogen bonding, pore filling, etc. In response to this research hotspot, this study reviewed the most recent research progress on the adsorption of ibuprofen using biochar-based materials, including the modified preparation process of biochar and the adsorption mechanism of IBP on various modified biochar surfaces. Additionally, potential challenges and future development directions for the practical applications of biochar were discussed and proposed.

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Section: Other Technologies For Removing Pharmaceutical Residues From...mentioning

confidence: 99%

Research progress on biochar-based material adsorption and removal of ibuprofen

Zhan,

Ye,

Hou

2023

Front. Environ. Sci.

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“…In order to prevent this impact, it is crucial to choose the ideal molar ratio of Fe. ZVI is also capable of activating PS by reducing it into sulfate ions and radicals (Equation ( 7)) [38]. Produced ferrous iron is also capable of producing sulfate radicals (Equation ( 8)), while ferric iron can be reduced to ferrous iron under UV light (Equation ( 9)) [12,36]:…”

Section: Three-dimensional Plots For the Rsm Modelmentioning

confidence: 99%

“…Some papers use activators in combination for synergetic effect [36,37]. Currently, heterogeneous catalysis using iron and iron minerals is considered to be highly effective [38]. In this study, persulfate was activated by zero-valent iron, which led to the production of sulfate radicals.…”

Section: Introductionmentioning

confidence: 96%

UV and Zero-Valent Iron (ZVI) Activated Continuous Flow Persulfate Oxidation of Municipal Wastewater

et al. 2022

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Currently, sulfate-radical-based advanced oxidation processes are promising candidates to become viable post-treatment processes for wastewater purification. In this work, a continuous flow UV light/persulfate (PS)/zero-valent iron (ZVI) system has been applied for wastewater treatment for the first time. The influence of certain photo-Fenton-like process parameters, such as space time, PS concentration, and PS to ZVI molar ratio, on the removal of total organic carbon (TOC), was examined using the Box–Behnken design. First, synthetic municipal wastewater was used for the experiments, and the polynomial regression model was constructed utilizing the real data by using the response surface methodology (RSM). The adequacy of the RSM model was assessed by analysis of variance, which showed that the model was reliable and could be applied to improve the process parameters for TOC removal. Moreover, both synthetic and real municipal wastewater were spiked with carbamazepine (CBZ), which is commonly prescribed as an antiepileptic drug, to investigate its fate in the UV/PS/ZVI system. With a space time of 60 min, PS concentration of 60 mM, and PS to ZVI molar ratio of 15, it was possible to remove 71% of TOC and completely remove CBZ from the synthetic municipal wastewater, whereas a 60% TOC removal and complete removal of CBZ were achieved at a space time of 50 min, PS concentration of 50 mM, and PS/ZVI molar ratio of 15 for the real municipal wastewater. This difference in TOC removal could possibly be linked to the complex matrix of the real wastewater and the presence of radical scavenging agents.

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