Assessment of different iron sources for continuous flow solar photo-Fenton at neutral pH for sulfamethoxazole removal in actual MWWTP effluents

Soriano-Molina, P.; Obra, I. de la; Miralles-Cuevas, S.; Gualda-Alonso, E.; López, J.L. Casas; Pérez, J.A. Sánchez

doi:10.1016/j.jwpe.2021.102109

Cited by 18 publications

(5 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, an experiment at a larger scale must be conducted to confirm these results and verify the economic feasibility of applying these processes. Soriano-Molina et al [ 18 ] investigated sulfamethoxazole removal in actual MWWTP effluents using FeNTA and FeEDDS for continuous flow solar photo-Fenton and also concluded that FeNTA was the most cost-effective ligand to be used in the solar photo-Fenton process, even when compared to classic photo-Fenton, as it showed higher costs associated to the iron source (FeSO 4 ·7H 2 O) and acidification (6% of the total treatment cost), thus resulting in less efficiency associated to higher costs (30% more expensive) when compared to FeNTA.…”

Section: Resultsmentioning

confidence: 99%

“…However, more studies using real effluents are needed. Only one study has evaluated the efficiency and operating costs associated with the use of different iron sources (EDDS and NTA) on the degradation of a target micropollutant (sulfamethoxazole, 50 µg L −1 ) in MWWTP effluent at neutral pH [ 18 ]. In addition, as effluents vary in composition, toxicity must also be used as a response variable for a comprehensive evaluation of the efficiency of each chelating agent in terms of environmental footprint [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

“…So far, evaluations on the performance of these chelating agents in DW and MWWTP effluent have been limited to EDDS and NTA [ 18 , 19 ], which are more expensive than EDTA, Cit and Ox [ 12 , 13 , 18 ]. Therefore, it is critical to perform in-depth studies comparing the efficiencies obtained for the simultaneous degradation of micropollutants and toxicity removal in MWWTP in the presence of each of these agents.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of Iron Complex Source on MWWTP Effluent Treatment by Solar Photo-Fenton: Micropollutant Degradation, Toxicity Removal and Operating Costs

et al. 2022

Self Cite

View full text Add to dashboard Cite

Benzophenone-3, fipronil and propylparaben are micropollutants that are potential threats to ecosystems and have been detected in aquatic environments. However, studies involving the investigation of new technologies aiming at their elimination from these matrices, such as advanced oxidation processes, remain scarce. In this study, different iron complexes (FeCit, FeEDTA, FeEDDS and FeNTA) were evaluated for the degradation of a mixture of these micropollutants (100 µg L−1 each) spiked in municipal wastewater treatment plant (MWWTP) effluent at pH 6.9 by solar photo-Fenton. Operational parameters (iron and H2O2 concentration and Fe/L molar ratio) were optimized for each complex. Degradation efficiencies improved significantly by increasing the concentration of iron complexes (1:1 Fe/L) from 12.5 to 100 µmol L−1 for FeEDDS, FeEDTA and FeNTA. The maximum degradation reached with FeCit for all iron concentrations was limited to 30%. Different Fe/L molar ratios were required to maximize the degradation efficiency for each ligand: 1:1 for FeNTA and FeEDTA, 1:3 for FeEDDS and 1:5 for FeCit. Considering the best Fe/L molar ratios, higher degradation rates were reached using 5.9 mmol L−1 H2O2 for FeNTA and FeEDTA compared to 1.5 and 2.9 mmol L−1 H2O2 for FeEDDS and FeCit, respectively. Acute toxicity to Canton S. strain D. melanogaster flies reduced significantly after treatment for all iron complexes, indicating the formation of low-toxicity by-products. FeNTA was considered the best iron complex source in terms of the kinetic constant (0.10 > 0.063 > 0.051 > 0.036 min−1 for FeCit, FeNTA, FeEDTA and FeEDDS, respectively), organic carbon input and cost-benefit (USD 327 m−3 > USD 20 m−3 > USD 16 m−3 > USD 13 m−3 for FeEDDS, FeCit, FeEDTA and FeNTA, respectively) when compared to the other tested complexes.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Iron Complex Source on MWWTP Effluent Treatment by Solar Photo-Fenton: Micropollutant Degradation, Toxicity Removal and Operating Costs

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…Iron dissolved in both experiments remained constant until the target removal was achieved. It can be explained by the higher photoactivity of EDDS, which makes its decomposition faster, generating a higher amount of Fe 2+ available to react and generate • OH [47].…”

Section: Chelating Agents' Assessmentmentioning

confidence: 99%

Combination of Photo-Fenton and Granular Activated Carbon for the Removal of Microcontaminants from Municipal Wastewater via an Acidic Dye

Núñez-Tafalla,

Salmerón,

Venditti

et al. 2024

Sustainability

View full text Add to dashboard Cite

Combining photo-Fenton and granular activated carbon (GAC) is an alternative to increase the feasibility of using photo-Fenton in full scale. This work is a preliminary study of its viability at natural pH. Both technologies were applied separately and compared with their combination, GAC filtration instead of batch mode, to achieve an approach close to full scale. The target compound considered in this investigation was indigo carmine as a hydroxyl radicals’ probe. The results show that 80% removal of the target compound could be achieved when 20 min of the photo-Fenton treatment time was applied with the optimal dosing of the reagents (5 mg L−1 of iron and 40 mg L−1 of H2O2) working at natural conditions and using ethylenediamine-N,N-disuccinic acid as a chelating agent. Two GAC types, fresh GAC and regenerated, were evaluated on Rapid Small-Scale Columns showing similar breakthroughs and close capacity to adsorb the target compound per gram of GAC. Combining the technologies, with photo-Fenton as the first step and GAC as the second, was performed with 5 min of photo-Fenton treatment time. The 80% removal was maintained during 340 and 170 bed volumes for fresh and regenerated GAC, respectively. Aiming to achieve the maximum reduction of irradiation, 75% of the energy consumption was saved compared to the standalone photo-Fenton process, and the GAC life was extended to a maximum of 7 times.

show abstract

“…Another limitation related to the field of reactor engineering is in the operation of this process. In the case of photo‐fenton AOPs, which involve photo‐reactors working in a homogeneous medium, studies in continuous flow have shown the efficiency of this operating mode, particularly in the case of solar applications 14,15 . Continuous flow operating mode is better suited to scaling‐up and to the treatment of high flow rates.…”

Section: Introductionmentioning

confidence: 99%

Continuous flow photocatalytic reactor using TiO₂‐coated foams, modeling and experimental operating mode

et al. 2022

View full text Add to dashboard Cite

This article aims to build a modeling and simulating tool of the operation of a continuous flow heterogeneous photocatalysis reactor. Continuous flow is well-known in reactor engineering for allowing advanced control of reactor and scaling-up with great confidence, but little research has addressed it's potential for this kind of application. In developing this model, particular attention was paid to the coupling which occurs at local scale between the radiative transfer and the reaction kinetics of advanced oxidation of a target organic micro-pollutant. The solution of the radiative transfer equation by Monte Carlo method was applied to a photocatalyst supported on a macroporous ceramic foam forming an efficient 3D support. After identification of the kinetic law of degradation, the dynamic simulation model was validated through comparison with a series of experiments performed for different but constant irradiations and for variable irradiations approaching, in term of intensity and dynamics, natural solar radiation.

show abstract

Assessment of different iron sources for continuous flow solar photo-Fenton at neutral pH for sulfamethoxazole removal in actual MWWTP effluents

Cited by 18 publications

References 28 publications

Effect of Iron Complex Source on MWWTP Effluent Treatment by Solar Photo-Fenton: Micropollutant Degradation, Toxicity Removal and Operating Costs

Effect of Iron Complex Source on MWWTP Effluent Treatment by Solar Photo-Fenton: Micropollutant Degradation, Toxicity Removal and Operating Costs

Combination of Photo-Fenton and Granular Activated Carbon for the Removal of Microcontaminants from Municipal Wastewater via an Acidic Dye

Continuous flow photocatalytic reactor using TiO₂‐coated foams, modeling and experimental operating mode

Contact Info

Product

Resources

About

Assessment of different iron sources for continuous flow solar photo-Fenton at neutral pH for sulfamethoxazole removal in actual MWWTP effluents

Cited by 18 publications

References 28 publications

Effect of Iron Complex Source on MWWTP Effluent Treatment by Solar Photo-Fenton: Micropollutant Degradation, Toxicity Removal and Operating Costs

Effect of Iron Complex Source on MWWTP Effluent Treatment by Solar Photo-Fenton: Micropollutant Degradation, Toxicity Removal and Operating Costs

Combination of Photo-Fenton and Granular Activated Carbon for the Removal of Microcontaminants from Municipal Wastewater via an Acidic Dye

Continuous flow photocatalytic reactor using TiO2‐coated foams, modeling and experimental operating mode

Contact Info

Product

Resources

About

Continuous flow photocatalytic reactor using TiO₂‐coated foams, modeling and experimental operating mode