Peroxymonosulfate activation by suspended biogenic manganese oxides for polishing micropollutants in wastewater effluent

• Suspended BioMnOx effectively activate PMS to remove a mixture of micropollutants. Radicals •OH, •SO4? and 1O2 played important role in the micropollutant removal. A BioMnOx/PMS system indicates as promising post-treatment for wastewater effluent. The toxicity effluent was minimum after this polishing treatment. activation peroxymonosulfate (PMS) generate radical oxygen species (ROS) situ chemical oxidation has been shown be an efficient technology micropollutants Thus, it is also great importance develop environmental-friendly catalysts activation. present study employed suspended biogenic manganese oxides (BioMnOx) In feasibility test, relatively high removal efficiencies (>80%) 14 selected were obtained over short reaction times (20 min), particular refractory such carbamazepine (98%), diclofenac (100%) metoprolol (81%). inhibition effect coexisting anions investigated, which showed that addition HCO 3 – inhibited process, while Cl negligible effect. Based on quenching experiments, sulfate radical, hydrogen singlet all involved responsible ROS compound-specific. Furthermore, novel established by utilising BioMnOx-coated carriers catalyst, from previously engineered moving bed biofilm reactor (MBBR). This special then applied step. Results most efficiently removed through system, (91%) sulfamethoxazole (98%). Lastly, MBBR determined Vibrio fisheri , toxic