Ozone membrane contactor to intensify gas/liquid mass transfer and contaminants of emerging concern oxidation

Presumido, Pedro Henrique; Montes, Rosa; Quintana, José Benito; Rodil, Rosario; Feliciano, Manuel; Puma, Gianluca Li; Gomes, Ana I.; Vilar, Vítor J.P.

doi:10.1016/j.jece.2022.108671

Cited by 16 publications

(1 citation statement)

References 68 publications

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“…Among AOPs ozonation in rapidly gaining ground in Europe, since it is able to effectively degrade a large range of organic contaminants and it is rather simple to mechanically implement 13 , 14 . However, the ozone (O 3 ) generator is a sophisticated plant that requires a high energy consumption (around 7.2–12.3 kW/kg O 3 generally and up to 132 kWh/m 3 in terms of electrical energy consumption to remove 90% of contaminants in 1 m 3 of a multi-contaminated water) imposing high capital and operative costs 14 , 15 . Therefore, ozone is a viable solution for large plants and rich jurisdictions, but it is not in less wealthy or smaller ones.…”

Section: Introductionmentioning

confidence: 99%

Assessment of new hydrogen peroxide activators in water and comparison of their active species toward contaminants of emerging concern

Farinelli,

Rebilly,

Banse

et al. 2024

Sci Rep

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Advanced oxidation processes are the most efficient tool to thwart the overaccumulation of harmful organic compounds in the environment. In this direction bioinspired metal complexes may be a viable solution for oxidative degradations in water. However, their synthesis is often elaborated and their scalability consequently low. This study presents alternative easy-to-synthesize bioinspired metal complexes to promote degradations in water. The metals employed were iron and manganese ions, hence cheap and highly accessible ions. The complexes were tested toward Phenol, Estrone, Triclosan, Oxybenzone, Diclofenac, Carbamazepine, Erythromycin, Aspartame, Acesulfame K, Anisole and 2,4-Dinitrotoluene. The reaction favoured electron-rich compounds reaching a removal efficiency of over 90%. The central ion plays a crucial role. Specifically, Mn(II) induces a non-radical pathway while iron ions a predominant radical one (⋅OH is predominant). The iron systems resulted more versatile toward contaminants, while the manganese ones showed a higher turn-over number, hence higher catalytic behaviour.

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