Comparative studies of Rhodamine B decolorization in the combined process Na2S2O8/visible light/ultrasound

Zawadzki, Piotr

doi:10.5004/dwt.2021.26694

Cited by 8 publications

(5 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This phenomenon is characteristic of AOPs (Liu et al, 2018 ; Zotesso et al, 2017 ). With increasing concentration, the consumption of oxidative radicals is higher, and the probability of collision of oxidative radicals with dye molecules decreases (Zawadzki, 2021a ).…”

Section: Visible Light–driven Advanced Oxidation Processesmentioning

confidence: 99%

“…Materials for visible light activation of persulfates can be acids (e.g., ascorbic acid) and sugars (e.g., glucose, sucrose) (Hou et al, 2020b ; Watts et al, 2018 ; Zawadzki, 2019 ). Degradation of micropollutants in the presence of persulfate and visible light is also achieved in processes involving catalysts, e.g., TiO 2 (Du et al, 2020 ), or combined methods, e.g., ultrasound and visible light–activated sodium persulfate (Zawadzki, 2021a ). Recently, a promising approach to activate persulfates is the innovative material perylene diimide (PDI).…”

Section: Visible Light–driven Advanced Oxidation Processesmentioning

confidence: 99%

“…The generation of sulfate radicals was carried out in the presence of sodium persulfate (Na 2 S 2 O 8 ), glucose, and visible light (an innovative activation method) in the research by Zawadzki ( 2021a ). Glucose was essential to activate Na 2 S 2 O 8 in visible light.…”

Section: Visible Light–driven Advanced Oxidation Processesmentioning

confidence: 99%

“…Both studies confirm that higher dye concentrations inhibit the radical reactions with dye molecules. Furthermore, a high concentration of molecules can lead to competition effects between dye molecules, reaction by-products, and generated radicals (Zawadzki, 2021a ).…”

Section: Visible Light–driven Advanced Oxidation Processesmentioning

confidence: 99%

See 3 more Smart Citations

Visible Light–Driven Advanced Oxidation Processes to Remove Emerging Contaminants from Water and Wastewater: a Review

Zawadzki

2022

Water Air Soil Pollut

Self Cite

View full text Add to dashboard Cite

The scientific data review shows that advanced oxidation processes based on the hydroxyl or sulfate radicals are of great interest among the currently conventional water and wastewater treatment methods. Different advanced treatment processes such as photocatalysis, Fenton’s reagent, ozonation, and persulfate-based processes were investigated to degrade contaminants of emerging concern (CECs) such as pesticides, personal care products, pharmaceuticals, disinfectants, dyes, and estrogenic substances. This article presents a general overview of visible light–driven advanced oxidation processes for the removal of chlorfenvinphos (organophosphorus insecticide), methylene blue (azo dye), and diclofenac (non-steroidal anti-inflammatory drug). The following visible light–driven treatment methods were reviewed: photocatalysis, sulfate radical oxidation, and photoelectrocatalysis. Visible light, among other sources of energy, is a renewable energy source and an excellent substitute for ultraviolet radiation used in advanced oxidation processes. It creates a high application potential for solar-assisted advanced oxidation processes in water and wastewater technology. Despite numerous publications of advanced oxidation processes (AOPs), more extensive research is needed to investigate the mechanisms of contaminant degradation in the presence of visible light. Therefore, this paper provides an important source of information on the degradation mechanism of emerging contaminants. An important aspect in the work is the analysis of process parameters affecting the degradation process. The initial concentration of CECs, pH, reaction time, and catalyst dosage are discussed and analyzed. Based on a comprehensive survey of previous studies, opportunities for applications of AOPs are presented, highlighting the need for further efforts to address dominant barriers to knowledge acquisition.

show abstract

Section: Visible Light–driven Advanced Oxidation Processesmentioning

confidence: 99%

Section: Visible Light–driven Advanced Oxidation Processesmentioning

confidence: 99%

Section: Visible Light–driven Advanced Oxidation Processesmentioning

confidence: 99%

Section: Visible Light–driven Advanced Oxidation Processesmentioning

confidence: 99%

See 2 more Smart Citations

Visible Light–Driven Advanced Oxidation Processes to Remove Emerging Contaminants from Water and Wastewater: a Review

Zawadzki

2022

Water Air Soil Pollut

Self Cite

View full text Add to dashboard Cite

show abstract

“…Zawadzki [17] investigated the degradation of RhB in the presence of ultrasound (US) and sodium persulfate (Na 2 S 2 O 8 ) activated by visible light (Vis). The performed study proved that a hybrid sono-visible light-sodium persulfate system is an interesting alternative for treatment of solutions containing rhodamine B at varying dye concentrations (up to 20 mg/L).…”

Section: Chemical Structurementioning

confidence: 99%

Degradation Efficiency and Kinetics Analysis of an Advanced Oxidation Process Utilizing Ozone, Hydrogen Peroxide and Persulfate to Degrade the Dye Rhodamine B

Zawadzki

Deska

2021

Catalysts

Self Cite

View full text Add to dashboard Cite

In this study, the effectiveness of a rhodamine B (RhB) dye degradation process at a concentration of 20 mg/L in different advanced oxidation processes—H2O2/UV, O3/UV and PDS/UV—has been studied. The use of UV in a photo-assisted ozonation process (O3/UV) proved to be the most effective method of RhB decolorization (90% after 30 min at dye concentration of 100 mg/L). The addition of sulfate radical precursors (sodium persulfate, PDS) to the reaction environment did not give satisfactory effects (17% after 30 min), compared to the PDS/UV system (70% after 30 min). No rhodamine B decolorization was observed using hydrogen peroxide as a sole reagent, whereas an effect on the degree of RhB degradation was observed when UV rays strike the sample with H2O2 (33% after 30 min). The rhodamine B degradation process followed the pseudo-first-order kinetics model. The combined PDS/O3/UV process has shown 60% color removal after 30 min of reaction time at an initial dye concentration of 100 mg/L. A similar effectiveness was obtained by only applying ozone or UV-activated persulfate, but at a concentration 2–5 times lower (20 mg/L). The results indicated that the combined PDS/O3/UV process is a promising method for high RhB concentrations (50–100 mg/L) comparing to other alternative advanced oxidation processes.

show abstract

Evaluation of TiO2/UV; O3/UV, and PDS/Vis for improving chlorfenvinphos removal from real municipal treated wastewater effluent

Zawadzki

2022

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

Comparative studies of Rhodamine B decolorization in the combined process Na2S2O8/visible light/ultrasound

Cited by 8 publications

References 52 publications

Visible Light–Driven Advanced Oxidation Processes to Remove Emerging Contaminants from Water and Wastewater: a Review

Visible Light–Driven Advanced Oxidation Processes to Remove Emerging Contaminants from Water and Wastewater: a Review

Degradation Efficiency and Kinetics Analysis of an Advanced Oxidation Process Utilizing Ozone, Hydrogen Peroxide and Persulfate to Degrade the Dye Rhodamine B

Evaluation of TiO2/UV; O3/UV, and PDS/Vis for improving chlorfenvinphos removal from real municipal treated wastewater effluent

Contact Info

Product

Resources

About