Decontamination and disinfection of water by solar photocatalysis: The pilot plants of the Plataforma Solar de Almeria

Malato, Sixto; Maldonado, Manuel I.; Fernández‐Ibáñez, Pilar; Oller, Isabel; Polo, Inmaculada; Sánchez-Moreno, Ricardo

doi:10.1016/j.mssp.2015.07.017

Cited by 174 publications

(98 citation statements)

References 73 publications

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“…Because it is an abundant source of green energy, solar irradiance has a great potential for various types of applications in the near future including water treatment plants [1,2], water supply and sanitation [3,4], environmental protection [5][6][7], and as an alternative to fossil fuel energy generation [8,9]. For developing these applications, worldwide accurate measurement of solar irradiance and of its variability over space and time are needed.…”

Section: Introductionmentioning

confidence: 99%

An Evaluation of Satellite Estimates of Solar Surface Irradiance Using Ground Observations in San Antonio, Texas, USA

et al. 2017

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Abstract:Estimates of solar irradiance at the earth's surface from satellite observations are useful for planning both the deployment of distributed photovoltaic systems and their integration into electricity grids. In order to use surface solar irradiance from satellites for these purposes, validation of its accuracy against ground observations is needed. In this study, satellite estimates of surface solar irradiance from Geostationary Operational Environmental Satellite (GOES) are compared with ground observations at two sites, namely the main campus of the University of Texas at San Antonio (UTSA) and the Alamo Solar Farm of San Antonio (ASF). The comparisons are done mostly on an hourly timescale, under different cloud conditions classified by cloud types and cloud layers, and at different solar zenith angle intervals. It is found that satellite estimates and ground observations of surface solar irradiance are significantly correlated (p < 0.05) under all sky conditions (r: 0.80 and 0.87 on an hourly timescale and 0.94 and 0.91 on a daily timescale, respectively for the UTSA and ASF sites); on the hourly timescale, the correlations are 0.77 and 0.86 under clear-sky conditions, and 0.74 and 0.84 under cloudy conditions, respectively for the UTSA and ASF sites, and mostly >0.60 under different cloud types and layers for both sites. The correlations under cloudy-sky conditions are mostly stronger than those under clear-sky conditions at different solar zenith angles. The correlation coefficients are mostly the smallest with solar zenith angle in the range of 75-90 • under all sky, clear-sky and cloudy-sky conditions. At the ASF site, the overall bias of GOES surface solar irradiance is small (+1.77 Wm −2 ) under all sky while relatively larger under clear-sky (−22.29 Wm −2 ) and cloudy-sky (+40.31 Wm −2 ) conditions. The overall good agreement of the satellite estimates with the ground observations underscores the usefulness of the GOES surface solar irradiance estimates for solar energy studies in the San Antonio area.

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Section: Introductionmentioning

confidence: 99%

An Evaluation of Satellite Estimates of Solar Surface Irradiance Using Ground Observations in San Antonio, Texas, USA

et al. 2017

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“…18 An example of treatment of washing waters from pesticide containers is provided by a plant in Almería (Spain) that uses solar energy. 19 Another is the Mané Garrincha Stadium in Brasília (Brazil), renovated for the 2014 FIFA World Cup and often cited as a sustainable building for its self-cleaning roof consisting of a TiO 2 -coated polytetrafluoroethylene membrane.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization, and Photocatalytic Activity of Pure and N-, B-, or Ag- Doped TiO2

Bezerra¹,

Cavalcante²,

Garcia³

et al. 2017

J. Braz. Chem. Soc.

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This article reports the synthesis and characterization of pure and N-, B-, and Ag-doped TiO 2 and the ability of these oxides to photodegrade methylene blue (MB) under sunlight or UV-ABC radiation. The compounds were synthesized using the sol-gel method and characterized by scanning electron microscopy, X-ray diffraction, diffuse reflectance spectroscopy, Fourier transform infrared spectroscopy, thermogravimetric analysis, and X-ray photoelectron spectroscopy. Photocatalytic efficiency was significantly increased by N-doping, resulting in 98% MB decomposition under UV-ABC irradiation for 180 min. Ag-and B-doped TiO 2 lowered MB degradation rates to 52 and 73%, respectively, compared with pure TiO 2 . The same behavior was observed with exposure to UV-Vis, with 88, 65, 60, and 42% MB removal with N-doped, pure, B-doped, and Ag-doped TiO 2 , respectively. Under visible light alone, N-doped TiO 2 exhibited higher photocatalytic efficiency than commercial P25-type TiO 2 . Photocatalysis with N-doped TiO 2 proved to be a promising alternative for MB degradation, given the potential of employing solar energy, thus minimizing operating costs.

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“…It has also reported [56] that solar TiO 2 technologies were able to eliminate toxicity and completely mineralize recalcitrant compounds present in raw oil sand process-affected water (OSPW). Malato et co-workers [57] developed an interesting review on the use of sunlight to produce the hydroxyl radicals by TiO 2 and encourage further relevant research with possible applications in industrial processes.…”

Section: Ferrous Activation Systemsmentioning

confidence: 99%

Sulfate Radical Technologies as Tertiary Treatment for the Removal of Emerging Contaminants from Wastewater

2017

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Abstract:Water scarcity and water pollution is a worldwide problem and has driven research into eco-friendly and low-energy cost efficient remediation. The reuse of wastewater for non-potable purpose after proper treatment is the only sustainable solution to the problem. Advanced oxidation processes (AOP) based on the in-situ generation of hydroxyl radicals have been intensively investigated for this purpose as a treatment step to achieve wastewater reuse. The main degradation mechanism of AOPs is based on the reaction of hydroxyl radicals with dissolved organic matter. However, hydroxyl radicals follow unselective multi-step pathways, limiting their efficiency in complex environmental matrices. To overcome such limitations, AOP treatment, based on generation of sulfate radicals, has been developed and widely investigated. This current mini-review will cover the most recent developments regarding emerging contaminant removal, i.e., organic micropollutants, using sulfate radicals generated by active persulfate or peroxymonosulfate, with a focus on an application to wastewater effluents for possible wastewater reuse.

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Decontamination and disinfection of water by solar photocatalysis: The pilot plants of the Plataforma Solar de Almeria

Cited by 174 publications

References 73 publications

An Evaluation of Satellite Estimates of Solar Surface Irradiance Using Ground Observations in San Antonio, Texas, USA

An Evaluation of Satellite Estimates of Solar Surface Irradiance Using Ground Observations in San Antonio, Texas, USA

Synthesis, Characterization, and Photocatalytic Activity of Pure and N-, B-, or Ag- Doped TiO2

Sulfate Radical Technologies as Tertiary Treatment for the Removal of Emerging Contaminants from Wastewater

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