Individual and simultaneous degradation of antibiotics sulfamethoxazole and trimethoprim by UV and solar radiation in aqueous solution using bentonite and vermiculite as photocatalysts
Source abstract
Abstract
Abstract This work is aimed at studying the utilization of bentonite and vermiculite as a photocatalyst in the individual and simultaneous degradation of sulfamethoxazole (SMX) and trimethoprim (TMP) by UV and solar light radiation. The clays were characterized by various analytical techniques, and it was corroborated that the photoactivity and textural properties of clays remained unaffected by the UV radiation. The band gap energy (Eg) of both clays was less than 4 eV, revealing that they could behave as semiconductor materials and could act as photoactive materials in the presence of UV radiation. The photodegradation rate and the maximum percentage of degradation for SMX and TMP were markedly enhanced by the presence of the clays. The reaction rate constant for SMX and TMP degradation in UV radiation was increased 11.4 and 46.4 times, respectively, when 10 mg of vermiculite were added to the UV system. Better degradation results were observed by using vermiculite, and this trend could be attributed to the higher percentage of doping ions in the vermiculite. In the UV radiation and UV/Clay systems, the rate constants for single degradation were faster than those for simultaneous degradation of SMX and TMP; this was due to the competition of SMX and TMP for the generated oxidant radicals. The photoactivity of the reutilized clays was similar to that of the original clays.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Pharmaceutical and Antibiotic Environmental Impacts · Advanced Photocatalysis Techniques · Advanced oxidation water treatment
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (57)
Show source-provided references
1. Pharmaceuticals in STP effluents and their solar photodegradation in aquatic environment10.1016/S0045-6535(02)00769-5 ↗
2. Avilés Escaño · 1993 · vol. 32 · 101
3. Fe-modified local clay as effective and reusable heterogeneous photo-Fenton catalyst for the decolorization of Acid Green 2510.1016/j.jtice.2014.03.002 ↗
4. Vermiculite as an exchanger for copper(II) and Cr(III) ions, kinetic studies10.1007/s11581-010-0456-8 ↗
5. Fe-clay-plate as a heterogeneous catalyst in photo-Fenton oxidation of phenol as probe molecule for water treatment10.1016/j.clay.2014.01.020 ↗
6. Occurrence and persistence of organic emerging contaminants and priority pollutants in five sewage treatment plants of Spain: two years pilot survey monitoring10.1016/j.envpol.2012.01.038 ↗
7. Electrochemical removal of antibiotics from wastewaters10.1016/j.apcatb.2005.11.035 ↗
8. Syntheses, structures, physical properties, and theoretical studies of CeMxOS (M=Cu, Ag; x≈0.8) and CeAgOS10.1021/ic061041k ↗
9. Cadmium and copper adsorption on bentonite: effects of pH and particle size10.1590/S1806-66902011000200004 ↗
10. Catalytic activity of iron species in layered clays for photodegradation of organic dyes under visible irradiation10.1016/j.apcatb.2007.08.006 ↗
11. The role of metal ion dopants in quantum-sized TiO2: correlation between photoreactivity and charge carrier recombination dynamics10.1021/j100102a038 ↗
12. Emerging pollutants, and communicating the science of environmental chemistry and mass spectrometry: pharmaceuticals in the environment10.1016/S1044-0305(01)00287-2 ↗
13. The photoreactions of trimethoprim in solution10.1016/S1010-6030(99)00047-7 ↗
14. Influence of Mn2+ and Mo6+ dopants on the phase transformations of TiO2 lattice and its photo catalytic activity under solar illumination10.1016/j.catcom.2008.11.041 ↗
15. Enhancement of the photo-Fenton reaction at near neutral pH through the use of ferrioxalate complexes: a case study on trimethoprim and sulfamethoxazole antibiotics removal from aqueous solutions10.1016/j.cej.2014.03.020 ↗
16. Thermodynamics of Pb2+ and Ni2+ adsorption onto natural bentonite from aqueous solutions10.1016/j.jcis.2005.01.045 ↗
17. Ferrer · 2004
18. Removal of Cadmium(II) and Lead(II) ions from aqueous phase on sodic bentonite10.1590/S1516-14392013005000007 ↗
19. Characterization of nanostructured allophane clays and their use as support of iron species in a heterogeneous electro-Fenton system10.1016/j.clay.2013.10.001 ↗
20. Crystal structures of clay-minerals and their X-ray identification edited by G. W. Brindley and G. Brown10.1107/S0567740881006390 ↗
21. Occurence of antibiotics in the aquatic environment10.1016/S0048-9697(98)00337-4 ↗
22. Reactivity of Fe(II) species associated with clay minerals10.1021/es025955r ↗
23. Microscale membrane extraction of diverse antibiotics from water10.1016/j.aca.2009.08.042 ↗
24. Quantum yields of active oxidative species formed on TiO2 photocatalyst10.1016/S1010-6030(00)00264-1 ↗
25. Photodegradation of phenanthrene on cation-modified clays under visible light10.1016/j.apcatb.2012.04.017 ↗
26. Assessing the concentrations and risks of toxicity from the antibiotics ciprofloxacin, sulfamethoxazole, trimethoprim and erythromycin in European rivers10.1016/j.scitotenv.2014.12.055 ↗
27. Drugs in the environment10.1016/S0045-6535(99)00438-5 ↗
28. Adsorption of zinc from aqueous solutions to bentonite10.1016/j.jhazmat.2005.05.027 ↗
29. Removal of residual pharmaceuticals from aqueous systems by advanced oxidation processes10.1016/j.envint.2008.07.009 ↗
30. New contributions to the optics of intensely light-scattering materials. Part I10.1364/JOSA.38.000448 ↗
31. Organo and inorgano-organo-modified clays in the remediation of aqueous solutions: an overview10.1016/j.clay.2012.02.006 ↗
32. Photo-Fenton discoloration of the azo dye X-3B over pillared bentonites containing iron10.1016/j.jhazmat.2005.07.090 ↗
33. Band-gap energy estimation from diffuse reflectance measurements on sol–gel and commercial TiO2: a comparative study10.1007/s10971-011-2582-9 ↗
34. Catalytic property of Fe-Al pillared clay for Fenton oxidation of phenol by H2O210.1016/j.apcatb.2008.07.013 ↗
35. Study of a large scale powdered activated carbon pilot: removals of a wide range of emerging and priority micropollutants from wastewater treatment plant effluents10.1016/j.watres.2014.10.047 ↗
36. Decontamination and disinfection of water by solar photocatalysis: recent overview and trends10.1016/j.cattod.2009.06.018 ↗
37. Occurrence of the antimicrobials sulfamethoxazole and trimethoprim in hospital effluent and study of their degradation products after electrocoagulation10.1002/clen.201000126 ↗
38. Degradation of trimethoprim antibiotic by UVA photoelectro-Fenton process mediated by Fe(III)–carboxylate complexes10.1016/j.apcatb.2014.06.008 ↗
39. Occurrence of selected antibiotics and antiretroviral drugs in Nairobi River Basin, Kenya10.1016/j.scitotenv.2015.08.139 ↗
40. Occurrence and dissipation of the antibiotics sulfamethoxazole, sulfadiazine, trimethoprim, and enrofloxacin in the Mekong Delta, Vietnam10.1371/journal.pone.0131855 ↗
41. Review of material design and reactor engineering on TiO2 photocatalysis for CO2 reduction10.1016/j.jphotochemrev.2015.06.001 ↗
42. Role of electrostatic interactions in the adsorption of cadmium(II) from aqueous solution onto vermiculite10.1016/j.clay.2013.12.012 ↗
43. Simultaneous quantification of sulfamethoxazole and trimethoprim in whole egg samples by column-switching high-performance liquid chromatography using restricted access media column for on-line sample clean-up10.1016/j.chroma.2007.08.046 ↗
44. Liquid chromatography–tandem mass spectrometry for the analysis of pharmaceutical residues in environmental samples: a review10.1016/j.chroma.2004.10.110 ↗
45. Carbon nanostructures-modified expanded vermiculites produced by chemical vapor deposition from ethanol10.1016/j.clay.2011.06.012 ↗
46. Synthesis of pillared bentonite starting from the Al–Fe polymeric precursor in solid state, and its catalytic evaluation in the phenol oxidation reaction10.1016/j.cattod.2007.12.082 ↗
47. Removal of trace pharmaceuticals from water using coagulation and powdered activated carbon as pretreatment to ultrafiltration membrane system10.1016/j.scitotenv.2016.01.179 ↗
48. Effect of 4MeV electron beam irradiation on carbon films
49. Determination of the quantum yield for the photochemical generation of hydroxyl radicals in TiO2 suspensions10.1021/jp9505800 ↗
50. Adsorption of a cationic surfactant on Na–montmorillonite: inspection of adsorption layer by X-ray and fluorescence spectroscopies10.1006/jcis.1999.6318 ↗
51. Novel preparation and properties of polypropylene−vermiculite nanocomposites10.1021/cm010061b ↗
52. Velde · 1992
53. Activated carbon as photocatalyst of reactions in aqueous phase10.1016/j.apcatb.2013.06.003 ↗
54. Photocatalytic destruction of gaseous diethyl sulfide over TiO210.1016/S0926-3373(01)00127-8 ↗
55. The preparation, characterization, and their photocatalytic activities of rare-earth-doped TiO2 nanoparticles10.1006/jcat.2002.3539 ↗
56. Photosensitizing activity of the anti-bacterial drugs sulfamethoxazole and trimethoprim10.1016/S1011-1344(96)07468-4 ↗
57. Kinetic and isothermal studies of lead ion adsorption onto bentonite10.1016/j.clay.2007.08.001 ↗