Peroxydisulfate activation by digestate-derived biochar for azo dye degradation: Mechanism and performance

Oxidation-Induced and Hydrothermal-Assisted Template-Free Synthesis of Mesoporous CeO2 for Adsorption of Acid Orange 7

“…Therefore, how to get rid of azo dye pollution from wastewater has been attracting significant attention. So far, numerous technical and engineering approaches have been engaged to treat azo dye wastewater, such as the adsorption method using activated carbon [ 9 ], membrane separation technology [ 10 ], magnetic separation technology [ 11 ], the chemical oxidation method [ 12 ] and the biological method [ 13 ]. Among these techniques, adsorption using a suitable adsorbent is an alternative procedure and exhibits the best results [ 14 ].…”

Highly efficient peroxymonosulfate activation by cobalt nanoparticles encapsulated in alginate-derived carbon for methylene blue degradation

“…Generally speaking, HCO 3 − should quench SO 4 ˙ − /˙OH and generate carbonate radicals that have low electrochemical efficiency (HCO 3 ˙/CO 3 ˙ − ( E 0 = 1.78 V)) via eqn (8) and (9), thus inhibiting the degradation process. 20,50 Contrary to this, the addition of CO 3 2− increased the rate of MB degradation to a certain extent to 86.69% after 3 min. The addition of CO 3 − is known to buffer the solution, which raises the pH to promote the activation of PMS.…”

Catalytic Processes for Water and Wastewater Treatment

“…Studies have shown that the sulfate radical-based advanced oxidation processes (AOP) have higher redox potentials, extended half-life time, and extensive pH flexibility than traditional hydroxyl radical-based AOP. Liu et al [115] studied food waste digestate-derived BC (FWDB) for peroxydisulfate (PDS) catalyst (radical-based oxidant) for the removal of azo dye (reactive brilliant red X-3B). They observed a 92.21% removal of X-3B within 30 min from solution at an initial content of 1 g/L.…”