TiO2-rGO photocatalytic degradation of an emerging pollutant: kinetic modelling and determination of intrinsic kinetic parameters

Photocatalytic Degradation of Alachlor over Titania-Reduced Graphene Oxide Nanocomposite: Intrinsic Kinetic Model and Reaction Pathways

“…The gained energy is attributed to internal emission, which may be considered negligible and in-scattering, and it can be defined as the energy contribution that is incorporated into the Ω direction coming from the energy that is out-scattered. Ω can be modeled by a phase function ( p (Ω′ → Ω)), which is a normalized probability function that provides information about the directional distribution of the refracted rays. ,,, Alternatively, the Henyey and Greenstein phase function was really finally adopted for this purpose, because it accurately predicts photons trajectories in TiO 2 suspensions, ,,,,, that is, where g λ is the asymmetry factor and θ is the scattering angle.…”

“…Hence, the model must hold an explicit dependence on the volumetric rate of photon absorption (VRPA). Once absorbed radiation inside the reactor is estimated, the photon absorption efficiency can be assessed. , …”

“…As a result, the development of radiation models and mathematical tools to calculate local photon absorption rates inside photoreactors with different geometries have received much research attention in the last decades. − The Monte Carlo method (MC) stands out among the most widely applied methodologies, because of its simplicity, especially when it is applied to reactors with complex geometry and configuration . Nevertheless, other methods, such as the discrete ordinate method (DOM), , the “two-flux” or “six-flux” radiation models (TFM and SFM, respectively) − and the control curve method, have been also used in kinetic studies and photoreactor simulations approaches .…”

Emerging pollutants—Part II: Treatment

“…Shabani, 2019; Jiang, Chowdhury, & Balasubramanian, 2019;Pant et al, 2019;Surenjan, Pradeep, & Philip, 2019;Tolosana-Moranchel et al, 2019;Yu, Kiwi, Zivkovic, et al, 2019;Yu, Chen, et al, 2019).…”

“…The influencing factors of photocatalytic degradation include pH value of solution, light source type, and characteristics of catalysts (Carena, Puscasu, Comis, Sarakha, & Vione, 2019; Lee et al, 2019). Existing studies mainly focus on the optimization of process parameters, the development of efficient catalysts, and combined processes (Fard, Haghighi, & Shabani, 2019; Jiang, Chowdhury, & Balasubramanian, 2019; Pant et al, 2019; Surenjan, Pradeep, & Philip, 2019; Tolosana‐Moranchel et al, 2019; Yu, Kiwi, Wang, et al, 2019; Yu, Kiwi, Zivkovic, et al, 2019; Yu, Chen, et al, 2019).…”