Application of solar photo-Fenton for benzophenone-type UV filters removal

Zúñiga-Benítez, Henry; Peñuela, Gustavo A.

doi:10.1016/j.jenvman.2018.03.075

Cited by 29 publications

(8 citation statements)

References 33 publications

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“…Finally, OH radicals will also cleave the aromatic ring and generate small molecular compounds, such as glycolic acid, oxalic acid, malonic acid, 2-butenedioic acid, butanedioic acid, and tartronic acid ( Table 7). Acetic acid and formic acid were also detected in another benzophenone-type compound BP2 degradation by photo-fenton process [43].…”

Section: Degradation Mechanism Of Hbpmentioning

confidence: 95%

“…The removal, degradation mechanism, and ecotoxicity of BP3 by different treatment processes were assessed, such as UV/H 2 O 2 [31], ozone [32], fungal [33], chlorination [34,35], and activated persulfate [36,37]. In addition, the removal of other benzophenone-type UV filters, including BP2, BP4, and BP9, were also evaluated by different AOPs [38][39][40][41][42][43].BP, as a basic benzophenone-type substance with the simplest structure, is the important precursor for the production of other benzophenone-type UV filters. However, there are few reports on the removal of BP by photocatalysis and ozonation [44,45].…”

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confidence: 99%

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Insight into the Degradation of Two Benzophenone-Type UV Filters by the UV/H2O2 Advanced Oxidation Process

Zhou

et al. 2018

Water

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Environmental problems caused by UV filters, a group of emerging contaminants, have attracted much attention. The removal of two typical UV filters benzophenone (BP) and 4,4 -dihydroxy-benzophenone (HBP) in water was investigated by the UV/H 2 O 2 process. The response surface methodology (RSM) and central composite design (CCD) were applied to investigate the effects of the process parameters on the degradation rate constants, including the initial contaminant concentration, H 2 O 2 dose, and UV light intensity. BP is more easily degraded by the UV/H 2 O 2 process. Both processes followed pseudo-first-order kinetics. The results obtained with the built RSM model are in accordance with the experimental results (adjusted coefficients R 2 (adj)= 0.9835 and 0.9778 for BP and HBP, respectively). For both processes, the initial contaminant concentration (exerting a negative effect) were the most important factors controlling the degradation, followed by H 2 O 2 dose and UV intensity (exerting positive effects). A total of 15 BP degradation products and 13 HBP degradation products during the UV/H 2 O 2 process were identified by LC/MS and GC/MS. A series of OH radical irritated reactions, including hydroxylation, carboxylation, and ring cleavage, led to the final degradation of BP and HBP. Degradation pathways of BP and HBP were also proposed. On the whole, this work is a unique contribution to the systematic elucidation of BP and HBP degradation by the UV/H 2 O 2 process.United States, Japan, and Switzerland [5,[8][9][10][11][12]. There are reports that the concentration of BP reached 250 ng/L in wastewater [13]. The potential risks resulting from the occurrence of BP and HBP must not be overlooked.Advanced oxidation processes (AOPs) are a series of processes that can generate hydroxyl radicals to efficiently degrade organic pollutants in contaminated water [4,14,15]. The UV/H 2 O 2 system is a type of AOP, in which hydrogen peroxide (H 2 O 2 ) is added in the presence of UV light to generate hydroxyl radicals [16][17][18]. It is found that the UV/H 2 O 2 process can remove a large range of organic pollutants, including cyanobacterial toxins [19], diclofenac [20], amoxicillin [21], and other emerging contaminants [22][23][24].Benzophenone-type UV filters are usually the hardly biodegradable substances [25]. There are over 20 benzophenone-type UV filters, including HBP, BP, benzophenone-2, benzophenone-3 (BP3), benzophenone-4, benzophenone-5, and benzophenone-9. Among them, BP3 is the dominant UV filter and the most-frequently detected in the aquatic environment [26,27]. Many reported works have focused on the occurrence, transformation, and fate of BP3 [28][29][30]. The removal, degradation mechanism, and ecotoxicity of BP3 by different treatment processes were assessed, such as UV/H 2 O 2 [31], ozone [32], fungal [33], chlorination [34,35], and activated persulfate [36,37]. In addition, the removal of other benzophenone-type UV filters, including BP2, BP4, and BP9, were also evaluated by different AOPs [38][39][40][4...

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Section: Degradation Mechanism Of Hbpmentioning

confidence: 95%

mentioning

confidence: 99%

Insight into the Degradation of Two Benzophenone-Type UV Filters by the UV/H2O2 Advanced Oxidation Process

Zhou

et al. 2018

Water

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“…BP-3 can be removed from an aqueous solution very successfully by UV/Fenton process, considering the optimization of the conditions of the process itself. The study conducted on BP-3 [ 51 ] to remove this pollutant from the aqueous matrix was carried out at precisely determined initial concentrations of Fe 2+ , H 2 O 2 , and UV radiation intensity. To determine the optimal conditions, a face cantered, central composite design was carried out.…”

Section: Degradation Of Benzophenone-type Uv Filters Based On Advance...mentioning

confidence: 99%

“…The BP-3 biodegradation study was conducted via chemical oxygen demand (COD) and biochemical oxygen demand (BOD5). BOD 5 /COD ratio analysis showed that after 300 min of treatment 61% of the substrate was demineralized and solution biodegradability increased gradually [ 51 ]. This research showed that the UV/Fenton is an excellent process for the elimination of BP-3 from aqueous matrices.…”

Section: Degradation Of Benzophenone-type Uv Filters Based On Advance...mentioning

confidence: 99%

“…This research showed that the UV/Fenton is an excellent process for the elimination of BP-3 from aqueous matrices. From this class of UV filters, the stability of BP-1 and BP-2 was investigated under the influence of the UV/Fenton process [ 52 ] in conditions very similar to BP-3 [ 51 ]. Aqueous samples containing BP-1 and BP-2 were exposed to Fenton reagent and UV irradiation.…”

Section: Degradation Of Benzophenone-type Uv Filters Based On Advance...mentioning

confidence: 99%

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Stability and Removal of Benzophenone-Type UV Filters from Water Matrices by Advanced Oxidation Processes

et al. 2022

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Benzophenone (BP) type UV filters are common environmental contaminants that are posing a growing health concern due to their increasing presence in water. Different studies have evidenced the presence of benzophenones (BP, BP-1, BP-2, BP-3, BP-4, BP-9, HPB) in several environmental matrices, indicating that conventional technologies of water treatment are not able to remove them. It has also been reported that these compounds could be associated with endocrine-disrupting activities, genotoxicity, and reproductive toxicity. This review focuses on the degradation kinetics and mechanisms of benzophenone-type UV filters and their degradation products (DPs) under UV and solar irradiation and in UV-based advanced oxidation processes (AOPs) such as UV/H2O2, UV/persulfate, and the Fenton process. The effects of various operating parameters, such as UV irradiation including initial concentrations of H2O2, persulfate, and Fe2+, on the degradation of tested benzophenones from aqueous matrices, and conditions that allow higher degradation rates to be achieved are presented. Application of nanoparticles such as TiO2, PbO/TiO2, and Sb2O3/TiO2 for the photocatalytic degradation of benzophenone-type UV filters was included in this review.

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Performance study of a magnetic iron–copper bimetallic material for the removal of an environmental “cocktail” of diverse hazardous organic micropollutants from aqueous samples

Vasilas

Chatzimitakos

Sygellou

et al. 2021

Nanotechnol. Environ. Eng.

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Application of solar photo-Fenton for benzophenone-type UV filters removal

Cited by 29 publications

References 33 publications

Insight into the Degradation of Two Benzophenone-Type UV Filters by the UV/H2O2 Advanced Oxidation Process

Insight into the Degradation of Two Benzophenone-Type UV Filters by the UV/H2O2 Advanced Oxidation Process

Stability and Removal of Benzophenone-Type UV Filters from Water Matrices by Advanced Oxidation Processes

Performance study of a magnetic iron–copper bimetallic material for the removal of an environmental “cocktail” of diverse hazardous organic micropollutants from aqueous samples

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