Carbocatalytic ozonation toward advanced water purification

Abstract

Carbon-based catalytic ozonation is state-of-the-art technology with high oxidation capabilities for wastewater remediation, taking advantage of the synergies of direct ozone oxidation and the generated reactive oxygen species (ROS). Replacing...

Application of Biochar as Functional Material for Remediation of Organic Pollutants in Water: An Overview

“…•− , surface-bound • OH, and surfaceactivated PS complexes is currently unknown, whereas that of *O ad is 2.43 V [72]. As for other distinctions between the systems, the formation of SO 4…”

“…From these results and upon studying the effects of catalytic parameters, it can be concluded that the electron-rich C=O active sites are of paramount importance in adsorbing dissolved O 3 , then initiating its rapid decomposition to produce • O 2 − that will cause the oxidation of C=O groups to O-C=O. Moreover, chromene-like and pyrone-like OFGs can reactively react with O 3 through the Criegee mechanism to form H 2 O 2 , which then reacts with the surface-active sites of carbonaceous catalyst or O 3 to yield • OH [72]. In addition, O 3 adsorption and decomposition to form • OH prefers the Lewis acid sites on the biochar surface [73,74].…”

“…Chemisorbed O 3 molecules on these sites are prone to dissociation into *O ad and free peroxide species. The *O ad can attack the adsorbed organic pollutants by the nonradical pathway or react with H 2 O and generate surface-adsorbed • OH [72]. Electron transfer can occur from the organic molecules to the O 3 with the biochar acting as an electron tunnel.…”

Recent advances in metal-free catalysts for the remediation of antibiotics, antibiotic resistant bacteria (ARB), and antibiotic resistant genes (ARGs)

“…3 The development of AOPs in the last decade (a) and the technical evolution of carbon-based AOPs for water decontamination (b). [29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44] following representative publications: Yu et al, 50 Duan et al, 51 Liu et al, 52 and Wang et al 20 2.1.1. Activated carbon.…”

“…As a consequence, we only briefly summarize some recent advances here without focusing on the preparation methods of carbocatalysts and their properties. For more information, the readers are recommended to refer to the following representative publications: Yu et al , 50 Duan et al , 51 Liu et al , 52 and Wang et al 20…”