Photocatalytic treatment of water soluble pesticide by advanced oxidation technologies using UV light and solar energy

Photocatalysis with solar energy: Sunlight-responsive photocatalyst based on TiO2 loaded on a natural material for wastewater treatment

“…Thus, the pollutant studied was completely degraded after an accumulated energy of approximately 70 kJ L À1 . These results agree with the photodegradation observed in literature for TiO 2 (Mendes et al, 2014;Shawaqfeh and Al Momani, 2010), being even better results than when TiO 2 in powder form are used in batch reactors. In the literature, the pure crystalline phases in TiO 2 (anatase or rutile) showed lower photocatalytic activities than the mixed TiO 2 -volcanic ashes material (TVA) when sunlight was used due to their higher energy and band gaps.…”

Photodegradation of neonicotinoid insecticides in water by semiconductor oxides

“…(Pichat et al 2004;Rao and Chu 2010;Fenoll et al 2012a). This technique mainly relies on the in situ generation of hydroxyl radicals ( • OH) which are strong oxidant, capable of destroying a wide range of organic pollutants under the combined action of SC, an energetic radiation and an oxidizing agent (Malato et al 2003;Shawaqfeh and Al Momami 2010). In general, with an appropriate light irradiation hν≥E g (band gap energy), the SC generates electron/hole pairs with electrons excited from the valence band to the conduction band and leaving positive holes in the valence band.…”

Removal of Imidacloprid Pesticide by Electrocoagulation Process using Iron and aluminum Electrodes

“…It has successfully been employed for the treatment of different wastewaters such as from hospitals [12], baker's yeast [13], laundries [14], biodiesel [15,16], and slaughter houses [17], wastewaters including surfactants [18], fluoride [19] and heavy metal-containing solutions [20,21]. Different technological processes such as adsorption [22], biodegradation [23,24], nanofiltration [25], electrocoagulation, electrochemical reduction and oxidation, indirect electro-oxidation with strong oxidants, and photocatalytic degradation [26,27], for the removal of pesticides have been reported recently. EC is an electrochemical has attracted increasing interest as a promising powerful method for efficiently removing pesticides from water such as Malathion [28], methyl parathion, atrazine and triazophos [29], Malathion, imidacloprid and chlorpyrifos [30], and abamectin [31].…”