A Review Study on Sulfate-Radical-Based Advanced Oxidation Processes for Domestic/Industrial Wastewater Treatment: Degradation, Efficiency, and Mechanism

Xia, Xinhui; Zhu, Fengyi; Jian-ju, LI; Yang, Haizhou; Wei, Liangliang; Li, Qiaoyang; Jiang, Junqiu; Zhang, Guangshan; Zhao, Qingliang

doi:10.3389/fchem.2020.592056

Cited by 167 publications

(85 citation statements)

References 85 publications

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“…In turn, the product W+20 could be related to the further hydroxylation of Kyn to form hydroxykynurenine (HO‐Kyn) since the generation of hydroxyl radicals is possible through the reaction SO 4 .− +H 2 O→SO 4 H − +HO . [48] . In the case of the Y+14 modification, is consistent with the formation of a dopaquinone residue by the nucleophilic attack of HO .…”

Section: Resultssupporting

confidence: 62%

Photosensitized Formation of Soluble Bionanoparticles of Lysozyme

et al. 2021

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Photosensitized crosslinking of hen egg‐white lysozyme (LZ) in buffer solutions was obtained by blue‐LED excitation of ruthenium (II) tris‐bipyridyl dication (Ru(bpy)32+) in a molar excess of persulfate anion (S2O82−), both in the absence and presence of dissolved oxygen. The results show a rapid monomer consumption of >75 %, with sequential formation of soluble LZ nanoparticles, e. g., dimers (LZ2),…n‐mers (LZn≥6) with diameters from 6 to 13 nm, regardless of the presence of dissolved oxygen in solution. The bionanoparticles are crosslinked through 3,3'‐dityrosine (diTyr) bonds, by the recombination of tyrosyl radicals of Y20, Y23, and Y53 residues of different protein molecules, produced by intermediated oxidants Ru(bpy)33+ and SO4.− generated after excitation. Furthermore, under aerobic conditions, photosensitized formation of singlet molecular oxygen (1O2) also results in the oxidative transformation of tryptophan residues into fluorescent kynurenine‐type derivatives. These findings may contribute to the rational development of functional protein bionanoparticles.

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Section: Resultssupporting

confidence: 62%

Photosensitized Formation of Soluble Bionanoparticles of Lysozyme

et al. 2021

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“…To understand the rather unique chemical structures of the PNVI cryogels formed, we should consider that the reactions are taking place in aqueous alkaline medium. Persulfate activation under alkaline conditions at ambient temperatures is a well‐known method to initiate sulfate anion radical formation 33 . In alkaline activation process, the persulfate ion is hydrolyzed to form the hydrogen peroxide ion.…”

Section: Resultsmentioning

confidence: 99%

Pullulan/poly(N‐vinylimidazole) cryogel: An efficient adsorbent for methyl orange

Hezarkhani

Ustürk

Özbilenler

et al. 2021

J of Applied Polymer Sci

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Pullulan/poly(N‐vinylimidazole) (PNVI) hybrid cryogels were synthesized under free radical polymerization and chemical crosslinking conditions in an alkaline, aqueous solution of pullulan (PUL), N‐vinylimidazole (NVI), ammonium persulfate and epicholorohydrin (ECH) at −18°C. PUL and PNVI cryogels alone were also synthesized under similar conditions. Optimum cryogel formation conditions were determined by considering product yields and gel fractions of the samples. The products were characterized by elemental analysis, FTIR‐ATR spectrometry, Thermal gravimetric analysis, and scanning electron microscopy (SEM) analyses. It has been found that PUL/PNVI hybrid samples bear improved physicochemical properties compared to ECH crosslinked PUL and PNVI samples alone. They act as hydrogels in aqueous medium reaching equilibrium swelling capacity values of the order of 600%. Dried PUL/PNVI cryogels show higher thermal stability than the dried cryogels of the parent polymers and maintain their physical integrity over a prolonged time period. Macroporous morphology was revealed by SEM analysis. Having 54.2 mg/g maximum equilibrium adsorption capacity in 200 ppm methyl orange solution and maintaining 95% of its adsorption capacity at the end of seven consecutive adsorption/desorption cycles, PUL/PNVI cryogel proved to be an efficient and durable dye adsorbent using methyl orange as the model compound in aqueous solution.

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“…Consequently, research on highly efficient treatments for both water disinfection and decontamination has been raised in the last decades, including the so-called Advanced Oxidation Processes (AOPs), whose successful results rely on the potential generation of Reactive Oxygen Species (ROS), mainly hydroxyl radicals ( • OH). Nevertheless, sulfate radical (SO 4 •− )-based advanced oxidation processes (SR-AOPs) are gaining attention as promising treatment technologies due to their potential to inactivate a wide range of pathogens and to degrade CECs in different water matrices such as domestic or industrial WW [ 10 , 11 ]. SO 4 •− mainly reacts by electron transfer reactions as the main oxidation mechanism, exhibiting longer half-life, higher redox potential, and higher selectivity than • OH.…”

Section: Introductionmentioning

confidence: 99%

UV-C Peroxymonosulfate Activation for Wastewater Regeneration: Simultaneous Inactivation of Pathogens and Degradation of Contaminants of Emerging Concern

et al. 2021

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This study explores the capability of Sulfate Radical-based Advanced Oxidation Processes (SR-AOPs) for the simultaneous disinfection and decontamination of urban wastewater. Sulfate and hydroxyl radicals in solution were generated activating peroxymonosulfate (PMS) under UV-C irradiation at pilot plant scale. The efficiency of the process was assessed toward the removal of three CECs (Trimethoprim (TMP), Sulfamethoxazole (SMX), and Diclofenac (DCF)) and three bacteria (Escherichia coli, Enterococcus spp., and Pseudomonas spp.) in actual urban wastewater (UWW), obtaining the optimal value of PMS at 0.5 mmol/L. Under such experimental conditions, bacterial concentration ≤ 10 CFU/100 mL was reached after 15 min of UV-C treatment (0.03 kJ/L of accumulative UV-C radiation) for natural occurring bacteria, no bacterial regrowth was observed after 24 and 48 h, and 80 % removal of total CECs was achieved after 12 min (0.03 kJ/L), with a release of sulfate ions far from the limit established in wastewater discharge. Moreover, the inactivation of Ampicillin (AMP), Ciprofloxacin (CPX), and Trimethoprim (TMP) antibiotic-resistant bacteria (ARB) and reduction of target genes (ARGs) were successfully achieved. Finally, a harmful effect toward the receiving aquatic environment was not observed according to Aliivibrio fischeri toxicity tests, while a slightly toxic effect toward plant growth (phytotoxicity tests) was detected. As a conclusion, a cost analysis demonstrated that the process could be feasible and a promising alternative to successfully address wastewater reuse challenges.

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A Review Study on Sulfate-Radical-Based Advanced Oxidation Processes for Domestic/Industrial Wastewater Treatment: Degradation, Efficiency, and Mechanism

Cited by 167 publications

References 85 publications

Photosensitized Formation of Soluble Bionanoparticles of Lysozyme

Photosensitized Formation of Soluble Bionanoparticles of Lysozyme

Pullulan/poly(N‐vinylimidazole) cryogel: An efficient adsorbent for methyl orange

UV-C Peroxymonosulfate Activation for Wastewater Regeneration: Simultaneous Inactivation of Pathogens and Degradation of Contaminants of Emerging Concern

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