The authors are thankful for the funding from the Spanish Ministry of Science and Innovation (project CALYPSOL RTI2018-097997-B-C31). Sara Garcia Ballesteros wants to thank the Valencian Government for her postdoctoral fellowship (APOST-2019) ; García-Ballesteros, S.; García-Negueroles, P.; Amat Payá, AM.; Arqués Sanz, A. (2022). Humic-Like Substances as Auxiliaries to Enhance Advanced Oxidation Processes. ACS Omega. 7(4):3151-3157. https://doi.org/10.1021/acsomega.1c05445 ; S ; 3151 ; 3157 ; 7 ; 4
[EN] Photo-induced Advanced Oxidation Processes (AOPs) using H2O2 or S2O82- as radical precursors were assessed for the abatement of six different contaminants of emerging concern (CECs). In order to increase the efficiency of these AOPs at a wider pH range, the catechol organic functional compound was studied as a potential assistant in photo-driven iron-based processes. Different salinity regimes were also studied (in terms of Cl- concentration), namely low salt water (1 g center dot L-1) or a salt-water (30 g center dot L-1) matrix. Results obtained revealed that the presence of catechol could efficiently assist the photo-Fenton system and partly promote the photo-induced S2O82- system, which was highly dependent on salinity. Regarding the behavior of individual CECs, the photo-Fenton reaction was able to enhance the degradation of all six CECs, meanwhile the S2O82--based process showed a moderate enhancement for acetaminophen, amoxicillin or clofibric acid. Finally, a response-surface methodology was employed to determine the effect of pH and catechol concentration on the different photo-driven processes. Catechol was removed during the degradation process. According to the results obtained, the presence of catechol in organic macromolecules can bring some advantages in water treatment for either freshwater (wastewater) or seawater (maritime or aquaculture industry). ; This research was funded by Spanish Ministry of Science, Innovation and Universities, AEI and FEDER for funding under the CalypSol Project (Ref: RTI2018-097997-B-C31) and the co-funding by the 2014-2020 ERDF Operational Programme and by the Department of Economy, Knowledge, Business and University of the Regional Government of Andalusia (Spain). Ref.: FEDER-UCA18-108023. J. Moreno-Andres is grateful to Generalitat Valenciana (Spain) (APOSTD/2019/207) and the financial support from the European Social Fund (ESF). ; Moreno-Andrés, J.; Vallés, I.; García-Negueroles, P.; Santos-Juanes Jordá, L.; Arqués Sanz, A. (2021). Enhancement of Iron-Based ...
[EN] Humiclike substances (HLS) have been demonstrated to be useful auxiliaries to drive the (photo)-Fenton process at mild pH, by avoiding iron inactivation via formation of active complexes. However, the actual performance of the process is affected by a manifold of opposite processes. In this work, the generation of hydroxyl radical-like reactive species in the Fentonlike process has been investigated using electron paramagnetic resonance, employing 5,5-dimethyl-1-pyrroline-N-oxide as a probe molecule. The signal obtained with the Fe(II)-HLS-H2O2 system at pH = was very intense but decreased with time, in line with the difficult reduction of the formed Fe(III) to Fe(II). On the contrary, the signal of the Fe(III)-HLS-H2O2 system was weak but stable. The most intense signal was observed at HLS concentration of ca. 30 mg/L. Interestingly, the performance of the Fenton system at pH = 5 to degrade caffeine followed the same trends, although caffeine removal was very low after 1 h of irradiation. The results were more evident in a solar simulated photo-Fenton process, where an increase in the abatement of caffeine was observed until an HLS concentration of 30 mg/L, where 98% removal was reached after 1 h. ; The authors want to acknowledge the financial support from Ministerio de Ciencia, Innovacion y Universidades (RTI2018-097997-B-C31) and European Union (645551-RISE-2014, MAT4TREAT). P.G.-N. would like to thank Spanish Ministerio de Economia y Competitividad for her fellowship (BES-2016-077962). ; García-Negueroles, P.; García-Ballesteros, S.; Amat Payá, AM.; Laurenti, E.; Arqués Sanz, A.; Santos-Juanes Jordá, L. (2019). Unveiling the Dependence between Hydroxyl Radical Generation and Performance of Fenton Systems with Complexed Iron. ACS Omega. 4(26):21698-21703. https://doi.org/10.1021/acsomega.9b02241 ; S ; 21698 ; 21703 ; 4 ; 26
12664 12672 24 14 ; S ; The final publication is available at Springer via http://dx.doi.org/10.1007/s11356-016-7889-1 In this paper, the possibility of reusing textile effluents for new dyeing baths has been investigated. For this purpose, different trichromies using Direct Red 80, Direct Blue 106, and Direct Yellow 98 on cotton have been used. Effluents have been treated by means of a photo-Fenton process at pH 5. Addition of humic-like substances isolated form urban wastes is necessary in order to prevent iron deactivation because of the formation of non-active iron hydroxides. Laboratory-scale experiments carried out with synthetic effluents show that comparable results were obtained when using as solvent water treated by photo-Fenton with SBO and fresh deionized water. Experiments were scaled up to pilot plant illuminated under sunlight, using in this case a real textile effluent. Decoloration of the effluent could be achieved after moderate irradiation and cotton dyed with this water presented similar characteristics as when deionized water was used. This work was realized with the financial support of a Marie Sklodowska-Curie Research and Innovation Staff Exchange project funded by the European Commission H2020-MSCA-RISE-2014 within the framework of the research project Mat4treaT (project number 645551). Financial support from Spanish Government (CTQ2015-69832-C4-4-R) is gratefully acknowledged. The authors acknowledge the financial support of the Generalitat Valenciana, Conselleria d'Educació, Cultura i Esport (GV/AICO/2015/124) and CTQ2015-69832-C4-4-R. García-Negueroles, P.; Bou-Belda, E.; Santos-Juanes Jordá, L.; Amat Payá, AM.; Arques Sanz, A.; Vercher Pérez, RF.; Monllor Pérez, P. (2017). Treatment and reuse of textile wastewaters by mild solar photo-Fenton in the presence of humic-like substances. Environmental Science and Pollution Research. 24(14):12664-12672. https://doi.org/10.1007/s11356-016-7889-1 Ali N, Hameed A et al (2009) Physicochemical characterization and bioremediation perspective of ...
The final publication is available at Springer via http://dx.doi.org/10.1007/s11356-016-7889-1 ; In this paper, the possibility of reusing textile effluents for new dyeing baths has been investigated. For this purpose, different trichromies using Direct Red 80, Direct Blue 106, and Direct Yellow 98 on cotton have been used. Effluents have been treated by means of a photo-Fenton process at pH 5. Addition of humic-like substances isolated form urban wastes is necessary in order to prevent iron deactivation because of the formation of non-active iron hydroxides. Laboratory-scale experiments carried out with synthetic effluents show that comparable results were obtained when using as solvent water treated by photo-Fenton with SBO and fresh deionized water. Experiments were scaled up to pilot plant illuminated under sunlight, using in this case a real textile effluent. Decoloration of the effluent could be achieved after moderate irradiation and cotton dyed with this water presented similar characteristics as when deionized water was used. ; This work was realized with the financial support of a Marie Sklodowska-Curie Research and Innovation Staff Exchange project funded by the European Commission H2020-MSCA-RISE-2014 within the framework of the research project Mat4treaT (project number 645551). Financial support from Spanish Government (CTQ2015-69832-C4-4-R) is gratefully acknowledged. The authors acknowledge the financial support of the Generalitat Valenciana, Conselleria d'Educació, Cultura i Esport (GV/AICO/2015/124) and CTQ2015-69832-C4-4-R. ; García-Negueroles, P.; Bou-Belda, E.; Santos-Juanes Jordá, L.; Amat Payá, AM.; Arques Sanz, A.; Vercher Pérez, RF.; Monllor Pérez, P. (2017). Treatment and reuse of textile wastewaters by mild solar photo-Fenton in the presence of humic-like substances. Environmental Science and Pollution Research. 24(14):12664-12672. https://doi.org/10.1007/s11356-016-7889-1 ; S ; 12664 ; 12672 ; 24 ; 14 ; Ali N, Hameed A et al (2009) Physicochemical characterization and bioremediation ...
