Application of peroxymonosulfate and its activation methods for degradation of environmental organic pollutants: Review

Activated persulfate for organic chemical degradation: A review.

Iron-mediated activation of persulfate and peroxymonosulfate in both homogeneous and heterogeneous ways: A review

Degradation of tetracycline by peroxymonosulfate activated with zero-valent iron: Performance, intermediates, toxicity and mechanism

Enhanced activation of peroxymonosulfate by nitrogen doped porous carbon for effective removal of organic pollutants

Effective decomposition of antibiotic sulfadiazine (SD) in a Fe0-catalyzed sonochemical Fenton like system (Sono-FL) was demonstrated. By using the response surface methodology (RSM), an optimized experimental condition of pH 7.00, 0.94 mM Fe0, 1.90 mM persulfate (PS) and 20 W ultrasound (US) power was concluded, which could reach the predicted SD degradation efficiency of 90%. Afterwards, effects of wastewater matrix (five inorganic anions and two chelating agents) on the SD degradation were investigated in the system, respectively. It was found that the SD degradation could be inhibited by SO42−, NO3−, HCO3−/CO32− and H2PO4− to different extents. Cl− would lead to an enhancement with a low dosage (5 mM), but an inhibition with a high dosage (100 mM). Unexpectedly, chlorinated organic intermediates were also found as SD decomposed. Appropriate dosages of oxalic acid (OxA) or EDTA could benefit the SD degradation in the Sono-FL system, while excessive chelating agents would play as competitive pollutants. It was summarized that inorganic anions would mainly react with SO4 − and/or OH to form sub-radicals of less oxidative potential. OxA and EDTA would not only participate in complexing dissolution of Fe0 but also provide additional oxidants such as H2O2 and [FeIVO]2+, through the electron transfer reactions caused by the iron-ligands species.

Decomposition of sulfadiazine in a sonochemical Fe0-catalyzed persulfate system: Parameters optimizing and interferences of wastewater matrix

Synergistic degradation of antibiotic sulfadiazine in a heterogeneous ultrasound-enhanced Fe0/persulfate Fenton-like system

Synergistic degradation of antibiotic norfloxacin in a novel heterogeneous sonochemical Fe0/tetraphosphate Fenton-like system.

Fabrication of the SnS2/ZnIn2S4 heterojunction for highly efficient visible light photocatalytic H2 evolution

Interference of real dissolved organic matters (DOMs) in advanced oxidation processes (AOPs) treatment of pharmaceuticals in reverse osmosis concentrates (ROC) has rarely reported. In this study, an ultrasound/zero valent iron/persulfate (US/ZVI/PS) system has been developed to degrade typical antibiotic sulfadiazine in the presence of co-existing ROC DOMs. It was found that common inorganic anions slightly affected the removal of SD, while fulvic acid (FA) and humic acid (HA) would bring medium to strong inhibition. 3D-EEM results evidenced the degradation of DOMs attributed to their competition for the oxidative radicals, suggesting the selective attack liable to larger molecular sizes. Intensive hydroxylation of HA and cleavage of C-C in FA molecule would occur respectively, where benzene ring, carbonyl or conjugated carbonyl group in DOMs would be destructed with oxidation of the nitrogen-containing functional groups. Scaled-up dosages of the agents could achieve efficient decomposition of all the three DOMs in a SD-spiked pristine ROC and all macromolecular structures were transformed into small molecules, suggesting the US/ZVI/PS system would be an good option for treating practical ROCs. 

Efficient decontamination of RO concentrate in a sonochemical zero-valent iron/persulfate Fenton-like system: The molecule-size preferred degradation of dissolved organic matters

Xiaoli Zou

Papers

Decomposition of sulfadiazine in a sonochemical Fe0-catalyzed persulfate system: Parameters optimizing and interferences of wastewater matrix

Synergistic degradation of antibiotic sulfadiazine in a heterogeneous ultrasound-enhanced Fe0/persulfate Fenton-like system

Synergistic degradation of antibiotic norfloxacin in a novel heterogeneous sonochemical Fe0/tetraphosphate Fenton-like system.

Fabrication of the SnS2/ZnIn2S4 heterojunction for highly efficient visible light photocatalytic H2 evolution

Efficient decontamination of RO concentrate in a sonochemical zero-valent iron/persulfate Fenton-like system: The molecule-size preferred degradation of dissolved organic matters