Photochemical treatment of 2-chlorophenol aqueous solutions using ultraviolet radiation, hydrogen peroxide and photo-Fenton reaction

Photo-Fenton oxidation of phenolic compounds catalyzed by iron-PILC

“…This decrease continued more slowly down to 2.9-3.8 at the end of the reaction. This pH change suggests the formation of organic acids and the consequent degradation of the parent molecule [1]. It is important to mention that the pH evolution was not affected by the H 2 O 2 initial concentration.…”

“…The essayed values of iron-PILC concentration (C cat ) were 0.5, 0.8, and 1 kg/m 3 . The H 2 O 2 stoichiometric amount was found according to the total mineralization reaction of CP (Reaction 7) [1]. The initial concentration of CP (C CP0 ) was kept constant at 100 mg/L at all experiments.…”

“…According to the World Health Organization (WHO), approximately one quarter of global population lacks hygienic drinking water [1]. Actually, in developing countries water scarcity is already a severe problem.…”

Engineered nanomaterials for water treatment and remediation: Costs, benefits, and applicability

“…The addition of UV irradiation to the process can enhance the rate of oxidant production and thus the efficiency of the treatment [121]. Fenton and photoFenton reactions can be used to remove a variety of halogenated organics [110,[122][123][124][125][126][127][128], pesticides [87], herbicides [129], most non-halogenated organics [114,117,[129][130][131][132], dyes [133][134][135][136][137][138][139], and PCPPs [118,[140][141][142][143][144][145][146]. Fenton and photo-Fenton reactions suffer many of the same limitations as hydrogen peroxide oxidation and UV photolysis: there are significant expenses associated with the energy required to manufacture hydrogen peroxide and the energy needed to power the UV lights.…”

Tratamento de efluentes aquosos contendo clorofenóis por meio de processo oxidativo avançado foto-Fenton.

“…Os principais aspectos que devem ser avaliados no projeto e construção de um reator fotoquímico são (ALFANO et al, 2000;BRAUN et al,1991): PALANIVELU, 2004;POULOPOULOS et al, 2008). Em outros casos, utilizaram-se as chamadas lâmpadas de luz negra, as quais emitem radiação basicamente entre 300-400 nm (BAYARRI et al, 2007;MOMANI;SANS;ESPLUGAS, 2004).…”