Degradation of Rhodamine B in water alone or as part of a mixture by advanced oxidation processes

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.

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Rhodamine B in dissolved and nano-bound forms: Indicators for light-based advanced oxidation processes

Chemosphere ◽

10.1016/j.chemosphere.2017.06.076 ◽

2017 ◽

Vol 184 ◽

pp. 1020-1027 ◽

Cited By ~ 10

Author(s):

Efrat Shabat-Hadas ◽

Hadas Mamane ◽

Vitaly Gitis

Keyword(s):

Rhodamine B ◽

Advanced Oxidation Processes ◽

Advanced Oxidation ◽

Oxidation Processes

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Photo-assisted advanced oxidation processes for Rhodamine B degradation using ZnO–Ag nanocomposite materials

Journal of Environmental Chemical Engineering ◽

10.1016/j.jece.2017.01.023 ◽

2018 ◽

Vol 6 (3) ◽

pp. 3610-3620 ◽

Cited By ~ 17

Author(s):

Karuppannan Rokesh ◽

Singaravelu Chandra Mohan ◽

Subbian Karuppuchamy ◽

Kandasamy Jothivenkatachalam

Keyword(s):

Rhodamine B ◽

Advanced Oxidation Processes ◽

Advanced Oxidation ◽

Nanocomposite Materials ◽

Oxidation Processes

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Micro- and nanostructured titanium(IV) oxide in sono-, photo- and sonophotocatalytic degradation of xanthene dye rhodamine b (Review)

Chemistry, Technology and Application of Substances ◽

10.23939/ctas2021.01.044 ◽

2021 ◽

Vol 4 (1) ◽

pp. 44-52

Author(s):

Yu. V. Sukhatskyi ◽

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Z. O. Znak ◽

D. V. Chupinskyi ◽

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Keyword(s):

Rhodamine B ◽

Advanced Oxidation Processes ◽

Oxidative Degradation ◽

Coal Ash ◽

Advanced Oxidation ◽

Solid Wastes ◽

Anaerobic Sludge ◽

Nanostructured Titanium ◽

Oxidation Processes ◽

Naturally Occurring

Adsorption methods for removing Rhodamine B from wastewater and oxidative degradation methods based on the use of advanced oxidation processes (sonolysis, photolysis, sono-, photo- and sonophotocatalysis) are considered. It was established that naturally occurring materials (such as clays, zeolites, coal ash, anaerobic sludge, agricultural solid wastes) and their modified or activated analogues are used as adsorbents for the removal of Rhodamine B. The possible mechanism of photo- and sonophotocatalytic degradation of Rhodamine B in the presence of micro- and nanostructured titanium (IV) oxide is presented. The effectiveness of its application for degradation of Rhodamine B is analyzed.

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