Photocatalysis with solar energy at a pilot-plant scale: an overview

Malato, Sixto; Blanco, J.; Vidal, Alfonso; Richter, Christoph

doi:10.1016/s0926-3373(01)00315-0

Cited by 693 publications

(349 citation statements)

References 75 publications

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“…AOPs are based on the generation of very reactive species such as hydroxyl radicals (OH -) that oxidize a broad range of pollutants very quickly. But the high operating costs of these processes are their main disadvantage [19].…”

Section: Introductionmentioning

confidence: 99%

Efficient catalytic effect of CuO nanostructures on the degradation of organic dyes

Zaman

Zainelabdin

Amin

et al. 2012

Journal of Physics and Chemistry of Solids

110

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An efficient catalytic effect of petals and flowers like CuO nanostructures (NSs) on the degradation of two organic dyes, methylene blue (MB) and rhodamine B (RB) were investigated.The highest degradation of 95% in CuO petals and 72 % in flowers for MB is observed in 24 h.For RB, the degradation was 85 % and 80 % in petals and flowers, respectively for 5 h. It was observed that CuO petals appeared to be more active than flowers for degradation of both dyes associated to high specific surface area. The petals and flower like CuO NSs were synthesized using the chemical bath method at 90 o C. The grown CuO NSs were characterized using scanning electron microscopy (SEM), high resolution transmission electron microscopy (HRTEM), and X-ray diffraction (XRD).

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Section: Introductionmentioning

confidence: 99%

Efficient catalytic effect of CuO nanostructures on the degradation of organic dyes

Zaman

Zainelabdin

Amin

et al. 2012

Journal of Physics and Chemistry of Solids

110

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“…Application of heterogeneous photocatalytic reactions with TiO 2 to environmental purification has been widely reported and is becoming more and more promising, especially for bio-recalcitrant organic contaminants [1][2][3]. TiO 2 photooxidation process, however, has not been widely applied in water industries due to some limits.…”

Section: Introductionmentioning

confidence: 99%

A mechanism for enhanced photocatalytic activity of silver-loaded titanium dioxide

et al. 2004

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“…The immobilization of such catalysts on proper solid supports allows also to operate under flow conditions (He et al 2010;Lizama et al 2005). The mechanism of photocatalysis has been extensively investigated (Serpone and Pelizzetti 1989;Ollis and Al-Ekabi 1993;Hoffmann et al 1995;Malato et al 2002). Basically the photocatalytic reactions are founded on the generation of electron-hole pairs on the semiconductor surface when the photocatalyst is illuminated by light having energy higher than its band gap.…”

Section: Background and Purposementioning

confidence: 99%

Removal of alkylphenols from polluted sites using surfactant-assisted soil washing and photocatalysis

Davezza

Fabbri

Prevot

et al. 2010

Environ Sci Pollut Res

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Background and Purpose Surfactant-assisted soil washing and photocatalysis are well known remediation processes of environmental concern. The application of photocatalysis to treat soil washing extracts containing 4-methylphenol, 4-ethylphenol and 4-tert-butylphenol in the presence of nonionic (C 12 E 8 and C 12 E 23 ) and anionic (SDS) surfactants and some of their binary mixtures was investigated in this work by studying the pollutants degradation in the presence of TiO 2 dispersions irradiated with simulated solar light. Materials and methods Clean soil samples were spiked with the investigated alkylphenols. Aqueous solutions of the chosen surfactants were placed in contact for some hours with the spiked soil samples in a rotatory mixer. The pollutants recoveries were evaluated via HPLC analysis. Photocatalytic experiments were performed in solarbox on aqueous solutions and on aqueous surfactant solutions containing the pollutants. Results The pollutants removal from the soil was proven effective using the examined surfactant solutions. The photocatalytic treatment of the wastes was faster using Brij 35, but also SDS and C 12 E 8 -SDS mixtures can be applied. After 2-5 hours the complete pollutants abatement was obtained, depending on the surfactant chosen and on the amount of TiO 2 employed. On the contrary, the treatment of wastes containing C 12 E 8 was an extremely slow process. Conclusions The photocatalytic approach can be applied to remove the examined aromatic pollutants from the washing wastes, confirming the viable coupling between this advanced oxidation method and the surfactant-based soil remediation treatments. Surfactant adsorption onto TiO 2 and micelles concentration play a dominant role.

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Photocatalysis with solar energy at a pilot-plant scale: an overview

Cited by 693 publications

References 75 publications

Efficient catalytic effect of CuO nanostructures on the degradation of organic dyes

Efficient catalytic effect of CuO nanostructures on the degradation of organic dyes

A mechanism for enhanced photocatalytic activity of silver-loaded titanium dioxide

Removal of alkylphenols from polluted sites using surfactant-assisted soil washing and photocatalysis

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