Potential role of biochar in advanced oxidation processes: A sustainable approach

Co-catalysis of trace dissolved Fe(iii) with biochar in hydrogen peroxide activation for enhanced oxidation of pollutants

“…[14][15][16] As biochar is readily available from waste biomass, its application in remediation of contaminated environments is advantageous over other elaborately synthesized materials in view of cost and sustainability. [17][18][19] However, the practical application of biochar-activated systems is limited by the low yield of ROS. For example, the cumulative yield of cOH was estimated to be only 0.09 mol per molar consumption of H 2 O 2 in a biochar/H 2 O 2 system, 20 and most of the H 2 O 2 was decomposed into end-products (H 2 O and O 2 ), as has been observed on other carbon materials.…”

Active site regulated Z-scheme MIL-101(Fe)/Bi2WO6/Fe(iii) with the synergy of hydrogen peroxide and visible-light-driven photo-Fenton degradation of organic contaminants

“…The common methods for pollutant removal are adsorption, 1 chemical, 2 membrane filtration, 3,4 biodegradation 5 and advanced oxidation processes (AOPs). 6,7 The removal of organic pollutants via the Fenton process has been recognized as a potential strategy in the water purification field; as the attention paid to AOPs continues to grow, a brand-new process based on iron ions and hydrogen peroxide was born in 1894, which was famously known as the Fenton process. 8 As a kind of typical AOPs, the Fenton process has been extensively applied in the pretreatment of refractory wastewater 9 and the direct degradation of a variety of complex organic compounds.…”

Metal‐Loaded Biochar for the Removal of Arsenic from Water: A Critical Review on Overall Effectiveness, Governing Mechanisms, and Influential Factors

“…Metal loaded biochar is able to generate radicals in water medium by decomposing persulfate, peroxymonosulfate, hydrogen peroxide, ozone etc. [190][191][192] Huang et al [187] explored the oxidation and adsorption of arsenite by using ferrihydrite loaded biochar (FhBC), where the biochar was prepared from the pyrolysis of maize straw powder. Batch studies were performed in 50 mL plastic centrifuge tubes at pH 7.…”

“…Hence, oxidation of arsenite to arsenate and its removal via any separation process is recommended. Metal loaded biochar is able to generate radicals in water medium by decomposing persulfate, peroxymonosulfate, hydrogen peroxide, ozone etc [190–192] . Huang et al [187] .…”