Photocatalytic degradation of methylisothiazolinone in water by TiO2 and TiO2/persulfate systems with simulated solar radiation

Article Biotechnology & Applied Microbiology

Comparison of hydroxyl-radical-based advanced oxidation processes with sulfate radical-based advanced oxidation processes

Jaimy Scaria et al.

Summary: The sulfate-radical-based advanced oxidation process (SRAOP) has gained significant attention as a potential replacement for hydroxyl-radical-based advanced oxidation process (HR-AOP) in recent years. While SRAOP has the advantage of overcoming limitations associated with HR-AOP, such as acidic pH requirement and interferences by environmental components, its mineralization efficiency remains a concern.

CURRENT OPINION IN CHEMICAL ENGINEERING (2022)

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Article Chemistry, Physical

Recent advances in persulfate-assisted TiO2-based photocatalysis for wastewater treatment: Performances, mechanism and perspectives

Ming Ge et al.

Summary: The use of persulfate-assisted TiO2 photocatalysis for wastewater treatment is an effective method to enhance the separation of electron/hole pairs and generate sulfate radicals for improved degradation of organic pollutants. Different modifications of TiO2 with carbon materials, transition metal-based catalysts, noble metals, and organic semiconductors have been explored to broaden its absorption spectrum and enhance charge separation, leading to increased efficiency in persulfate activation and pollutant degradation. Overall, the study also highlighted the importance of catalyst reusability and key operational parameters on the process efficiency, as well as proposed potential applications of persulfate-assisted TiO2 photocatalysis in water treatment.

JOURNAL OF ALLOYS AND COMPOUNDS (2021)

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Article Engineering, Environmental

Hydrogen peroxide and persulfate activation using UVA-UVB radiation: Degradation of estrogenic compounds and application in sewage treatment plant waters

Anaelle Gabet et al.

Summary: UVB radiation is more efficient in generating radicals, while the persulfate system shows higher efficiency in oxidant precursors. The Yeast Estrogen Screen assay is used to track estrogen degradation and ensure removal of estrogenic activity.

JOURNAL OF HAZARDOUS MATERIALS (2021)

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Article Engineering, Environmental

Evaluation of nZVI for the degradation of atrazine in heterogeneous Fenton-like systems at circumneutral pH

Jorge Plaza et al.

Summary: The study evaluates the use of nZVI for oxidative elimination of atrazine at circumneutral pH, with nZVI/H2O2/UVA system showing the highest degradation rate. Hydroxyl radicals play a significant role in atrazine oxidation, which is mainly initiated by alkylic oxidation rather than dechlorination. Different combinations of water constituent species can significantly affect the atrazine oxidation rate.

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING (2021)

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Review Biochemistry & Molecular Biology