Development of a new PET flow reactor applied to food dyes removal with advanced oxidative processes

Fabrication, functionalization and performance of doped photocatalysts for dye degradation and mineralization: a review

“…This figure has been reproduced from Sheydaei et al (2019) with the permission of Elsevier (© 2019 Elsevier B.V. All rights reserved) under licence number 4855170883735 (for both print and electronic formats) Fig. 19 a Arrangement of PET bottles in PET flow reactor with about 160 cm 2 of PET area removed from the side of every of the two PET bottles horizontally aligned so as to enable direct light harvesting in solution and b modified PET flow reactor configuration whereby bottoms of both PET bottles have been joined horizontally in view of avoiding junction of tops in design shown in a (a zone whereat no reaction is expected because of a paucity in light penetration) developed by Do Nascimento et al (2019). This figure has been reproduced from Do Nascimento et al (2019) with the permission of Elsevier (© 2019 Published by Elsevier Ltd.) under licence number 4855171052085 (for both print and electronic formats) treating a contaminated fluid using UV light.…”

“…19 a Arrangement of PET bottles in PET flow reactor with about 160 cm 2 of PET area removed from the side of every of the two PET bottles horizontally aligned so as to enable direct light harvesting in solution and b modified PET flow reactor configuration whereby bottoms of both PET bottles have been joined horizontally in view of avoiding junction of tops in design shown in a (a zone whereat no reaction is expected because of a paucity in light penetration) developed by Do Nascimento et al (2019). This figure has been reproduced from Do Nascimento et al (2019) with the permission of Elsevier (© 2019 Published by Elsevier Ltd.) under licence number 4855171052085 (for both print and electronic formats) treating a contaminated fluid using UV light. The latter system comprised several removable baffles (loaded with photocatalytic coatings) arranged at pre-set radial distance within the system boundaries which gave rise to meandering pathways running parallel to the light source for exposing the fluid to the ultraviolet light over the full length of the pathways.…”

New aluminum mesh from recyclable material for immobilization of TiO2 in heterogeneous photocatalysis

“…Synthetic dyes were acquired from F. Trajano Aromas e Ingredientes Ltda (Brazil) and equimolar samples were prepared with distilled water at a concentration of 35 mg · L −1 of BR and TT each. The initial concentration of dyes was based on previous experiments to simulate real wastewater matrices . Quantification of the pollutants was carried out through UV‐visible spectroscopy (Spectroquant Pharo 300) at wavelengths of 427 and 521 nm for TT and BR, respectively.…”

“…They are based on the generation of free radicals (mainly by applying UV radiation), such as hydroxyl (HO•), capable of oxidizing non‐selectively and partially or completely organic matter. The literature reports several AOP processes that have successfully mineralized synthetic organic dyes …”

“…The literature reports several AOP processes that have successfully mineralized synthetic organic dyes. [11][12][13][14] Titanium dioxide (TiO 2 ) is a semiconductor material that can generate oxidizing radicals when exposed UV radiation. [15,16] Advantages associated with the application of TiO 2 are its non-toxicity, significant photochemical activity, low cost, and stability in aqueous systems.…”