The effect of titanium dioxide nanoparticles and UV irradiation on photocatalytic degradation of Imidaclopride

Abstract

Imidaclopride is an insecticide widely used for pest control in agriculture around the world. It acts on the central nervous system of insects, while posing lower toxicity to mammals. This is an organic material made of Pyridinium, Dihydroimidazol and Nitramide. This structure poses a threat to the environment and humans. Until now, different types of methods have been used for elimination of this organic pollution. Recently, advanced oxidation processes (AOPs) are presented as a proposed method to remove this organic pollution. Photocatalytic degradation is also used as an efficient method for destruction of organic structures. In this study, the effect of titanium dioxide (TiO) nanoparticle as a photocatalyst activated by UV irradiation is investigated. The new design of the reactor was prepared with coaxial cylinders in which the inner cylinder is rotated at a constant speed. The reactor worked in two batch and continuous modes. The results show that the UV irradiation is more effective than activated TiO nanoparticle, as the designed reactor with UV irradiation eliminated Imidaclopride in less than 2 hours.

Photocatalytic, photolytic and radiolytic elimination of imidacloprid from aqueous solution: Reaction mechanism, efficiency and economic considerations

“…(7-9)). The contribution of these pathways to the transformation of target organic substances depends not only on the properties of the photocatalyst and the model compound, but also on the experimental conditions [5,6,7,8,9].…”

Recent technologies for leachate treatment: a review

“…Only 3-5% of the solar radiation that reaches the surface of the Earth is UVA, so it would be great to extend the absorbance of TiO 2 into the visible region (Ahmari et al 2018). In the same vein, several investigations have established that doping TiO 2 with metal ions is one of the most effective methods of improving the photoelectrochemical properties of TiO 2 irradiated with UV and sunlight (Ahmari et al 2018). Zhou et al (2017) studied the efficiency of the photocatalytic treatment of LFL using Cu/N-codoped TiO 2 .…”

NH2-Fe-MILs for effective adsorption and Fenton-like degradation of imidacloprid: Removal performance and mechanism investigation

“…There are numerous methods for the removal of IMC, including adsorption [6], microbial decomposition [7], ozonation [8], electrochemistry [9], photocatalysis [10,11] and advanced oxidation processes (AOPs) [12]. In these methods, AOPs is the most effective method which has been widely studied for its high efficiency, standardization and non-selectivity.…”