A critical review on ozone and co-species, generation and reaction mechanisms in plasma induced by dielectric barrier discharge technologies for wastewater remediation

Advancement in Ozone base wastewater treatment technologies: Brief review

“…Pathogens and heterotrophic bacteria must be controlled by an internal disinfection procedure in the aquaculture recirculation system. In a reusing water system, the effectiveness of Ozone alone and Ozone after which there should be UV radiation was tested to observe which was more effective in reducing heterotrophic and total coliform bacteria (Cao et al, 2021;Domingues et al, 2021;Giwa et al, 2021;Joseph et al, 2021;Lu et al, 2021;Mouele et al, 2021).…”

Ozonation treatment processes for the remediation of detergent wastewater: A comprehensive review

“…Advanced oxidation processes (AOPs) based on the generation of highly reactive radical oxidative species (ROS) such as hydroxyl radical (• OH), but also other relative species such as hydrogen radical (•H), hydrated electron (e !" # ), singlet oxygen ( 1 O2), hydroperoxyl radicals (HO $ • ), superoxide radicals (• O $ # ) and so forth [21,22] can be highly effective in the removal of recalcitrant pollutants and can serve as advanced methods for the treatment of laundry wastewater. The radical oxidative species (ROS) for different AOPs are shown in Table 2.…”

“…However, different sources and characteristics of the laundry wastewater may affect the performance or application steps of the various AOPs. In addition, challenges related to excessive energy consumption, chemical input, corrosion of the catalyst supports, inefficient light utilization, limited mass transfer of ozone and the operating costs has often restricted their application in wastewater treatment [21,56]. For example, the main challenges of electrochemical AOPs (e.g., electro-Fenton, anodic oxidation and indirect oxidation) resides on the costs and life of electrodes and the high electrical energy consumption [38,57].…”

Combinatorial effects of non-thermal plasma oxidation processes and photocatalytic activity on the inactivation of bacteria and degradation of toxic compounds in wastewater

“…11 In fact, AOPs generate reactive oxygen species (ROS) and reactive nitrogen species (RNS) such as H 2 O 2 , OH, O, NO 2 À and NO 3 À that cause the degradation of organic pollutants into smaller non-toxic molecules and the killing/inactivation of microorganisms via different signaling pathways. [12][13][14][15] Those pathways trigger, amongst others, the damage of the cell membrane/wall (peptidoglycans), DNA structure and intracellular proteins. Among the numerous AOPs, non-thermal atmospheric pressure plasma (NTAPP) is distinguished, in addition to its high ability to produce ROS and RNS, by other physicochemical factors that are also actively involved in the chemical degradation and pathogen inactivation pathways such as UV radiation, high energy electrons, shock waves, and local high temperature.…”

“…For instance, plasma-induced electrical elds can lead to physical destruction (electroporation or electrostatic destruction) that potentially kills pathogens present in water, and UV radiation is associated with an improved antibacterial efficiency given its capability to destroy bacterial DNA. [12][13][14] Nonetheless, plasma alone produces relatively low densities of reactive species (OHc, O, H 2 O 2 ) not effectively penetrating the gas-liquid interface to inuence the target pathogens and reach a 100% degradation efficiency of organic molecules. 16 To overcome this issue, few researchers have recently implemented a combinatorial strategy that couples NTAPP with various photocatalysts to generate a higher concentration of ROS and RNS in aqueous solutions.…”