Statistical approaches to understanding the impact of matrix composition on the disinfection of water by ultrafiltration

Cruz, Mercedes Cecilia; Romero, L. C.; Vicente, Marı́a Soledad; Rajal, Verónica Beatriz

doi:10.1016/j.cej.2017.01.081

Cited by 11 publications

(1 citation statement)

References 41 publications

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“…In these cases, however, the eventual saturation of the adsorbent surface and the fact that some pathogens cannot be retained due to their large size when compared to the dimensions of the pore and channel structure of the adsorbent, have resulted in a limited use of the adsorption approximation. In this regard, other separation technologies such as ultrafiltration, nanofiltration or reverse osmosis have been developed to efficiently remove pathogens from water (pore size of the membranes of 2 nm) ( Cruz et al., 2017 ; El-Ghzizel et al., 2020 ). In these cases however, other limitations such as membrane fouling and the high trans membrane pressure (up to 100 bar) are considered as two of the main challenges to overcome in the future in order to increase the effectiveness of this approach (Metcalf and Eddy, 2003) .…”

Section: Introductionmentioning

confidence: 99%

Photo-assisted electrochemical advanced oxidation processes for the disinfection of aqueous solutions: A review

et al. 2021

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Disinfection is usually the final step in water treatment and its effectiveness is of paramount importance in ensuring public health. Chlorination, ultraviolet (UV) irradiation and ozone (O 3 ) are currently the most common methods for water disinfection; however, the generation of toxic by-products and the non-remnant effect of UV and O 3 still constitute major drawbacks. Photo-assisted electrochemical advanced oxidation processes (EAOPs) on the other hand, appear as a potentially effective option for water disinfection. In these processes, the synergism between electrochemically produced active species and photo-generated radicals, improve their performance when compared with the corresponding separate processes and with other physical or chemical approaches. In photo-assisted EAOPs the inactivation of pathogens takes place by means of mechanisms that occur at different distances from the anode, that is: (i) directly at the electrode’s surface (direct oxidation), (ii) at the anode’s vicinity by means of electrochemically generated hydroxyl radical species (quasi-direct), (iii) or at the bulk solution (away from the electrode surface) by photo-electrogenerated active species (indirect oxidation). This review addresses state of the art reports concerning the inactivation of pathogens in water by means of photo-assisted EAOPs such as photo-electrocatalytic process, photo-assisted electrochemical oxidation, photo-electrocoagulation and cathodic processes. By focusing on the oxidation mechanism, it was found that while quasi-direct oxidation is the preponderant inactivation mechanism, the photo-electrocatalytic process using semiconductor materials is the most studied method as revealed by numerous reports in the literature. Advantages, disadvantages, trends and perspectives for water disinfection in photo-assisted EAOPs are also analyzed in this work.

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Section: Introductionmentioning

confidence: 99%