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

Zou, Xiaoli; Zhou, Tao; Mao, Juan; Wu, Xiaohui

doi:10.1016/j.cej.2014.07.048

Cited by 226 publications

(54 citation statements)

References 56 publications

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“…(7) and (8)) and the production of carboxyl acids [28] rapidly decreased the solution pH. For different initial pH values, with the progress of the reaction, pH would decrease to nearly the same value (2.9-3.5) except for the differences within the initial 35 min (Fig.…”

Section: Effect Of Initial Phmentioning

confidence: 99%

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Degradation of chloramphenicol by persulfate activated by Fe 2+ and zerovalent iron

Nie

Yan

et al. 2015

Chemical Engineering Journal

193

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h i g h l i g h t sThe removal efficiencies for CAP in water by PS activated by Fe 2+ and ZVI were studied.CAP was effectively removed by the ZVI-PS system at a broad pH range of 3-10. CAP removal was significantly influenced by operational parameters.The ZVI-PS system shows potential prospects in wastewater or even concentrated wastewater treatment. An oxidation pathway was proposed for CAP removal by the ZVI-PS system. a r t i c l e i n f o , and HA significantly inhibited CAP decomposition. Up to 92.8%, 94.7%, and 75.7% of CAP were removed from the filtrate, permeate, and retentate phases of wastewater, respectively. This result indicated that the ZVI-PS system can significantly remove CAP from wastewater and even concentrated wastewater. The intermediate products during oxidation were identified, and the degradation pathways of CAP were tentatively proposed.

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Section: Effect Of Initial Phmentioning

confidence: 99%

“…Therefore, iron ions can rapidly form different complexes with phosphate species and decrease the available soluble Fe 2+ for PS activation [16,28,40]. In addition, iron-phosphate complexes might rapidly cover the surface of ZVI, preventing PS access and therefore complicating iron corrosion.…”

Section: +mentioning

confidence: 99%

Degradation of chloramphenicol by persulfate activated by Fe 2+ and zerovalent iron

Nie

Yan

et al. 2015

Chemical Engineering Journal

193

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“…Good performance was reported in the ratio 1:0.2-1:1 under pH 3. As reported in the previous cases, the degradation rate is decreased to 8 % at higher concentration of 100 mg L -1 and increased with the applied power (Zou et al 2014). In order to check the practical applicability of the method in wastewater treatment, this work is extended and the effect of water matrixes such as inorganic ions and chelating agents such as ethylenediaminetetraacetic acid and oxalic acid was investigated.…”

Section: Sonocatalysis and Sonophotocatalysismentioning

confidence: 89%

“…The degradation of sulfadiazine is enhanced when the ultrasound is coupled with zero-valent iron and persulfate Environ Chem Lett Zou et al 2014). Moreover, when all these are combined together, 96 % of the initial compound is degraded after 60 min.…”

Section: Sonocatalysis and Sonophotocatalysismentioning

confidence: 96%

Degradation of pharmaceuticals by ultrasound-based advanced oxidation process

2016

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Water pollution by pharmaceutically active compounds is an emerging issue. Toxicological studies reveal that pharmaceuticals are indeed toxic for living organisms. The lack of suitable treatment technology for the complete removal of pharmaceuticals is therefore a major challenge. Advanced oxidation processes are emerging removal techniques that have many advantages versus conventional technologies. Many studies indicate that advanced oxidation processes, either in single or in combination with other degradation techniques, can enhance the degradation of pharmaceuticals in aqueous solutions. Here, we review the degradation of pharmaceuticals by sonolysis, an oxidation processes using ultrasound. In this technique, hydroxyl radicals are generated by pyrolytic cleavage of water molecules. We review the influence of operational parameters, additives and hybrid techniques on the degradation of pharmaceuticals. The maximum degradation of organic compounds was observed in the frequency range of 100-1000 kHz, which is in the high-frequency medium-power ultrasound. Even though almost all the experiments presented more than 90 % removal and good biodegradability of the target compound, good mineralization and the toxicity removal were hardly achieved. The efficiency of the degradation varies with water matrixes and varying pH. Major pathways of degradation are hydroxylation, dehalogenation, demethylation, decarboxylation, deamination, etc. More hybrid techniques have to be developed to scale up the application of ultrasound.

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“…For Fe(II)-PS, TOC removal was slightly decreased with increasing concentration of Fe(II). This might be attributed to the consumption of SR by the access amount of Fe(II) (Zou et al 2014). As indicated by Eqs.…”

Section: The Efficiency Of Coagulation-flocculation Pretreatmentmentioning

confidence: 99%

Mineralization of organic matter from vinasse using physicochemical treatment coupled with Fe2+-activated persulfate and peroxymonosulfate oxidation

Fagier

Ali

Tay

et al. 2016

Int. J. Environ. Sci. Technol.

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Application of advanced oxidation process for wastewater treatment has gained more attention recently. In this study, the efficiency of coagulation-flocculation pretreatment coupled with sulfate radical-based advanced oxidation process (SR-AOP) in the removal and mineralization of organic matter of sugarcane vinasse was evaluated. For coagulation-flocculation, jar-test experiment was carried out with ferric chloride as coagulant and the removal of TOC, color and UV 254 was determined. The results revealed that by using 15 g/L of coagulant, 70 % of TOC removal and nearly 100 % of UV 254 and color removal were achieved. The pretreated vinasse was then subjected to SR-AOP. In this study, sulfate radical was generated using persulfate (PS) and peroxymonosulfate (PMS) activated by Fe(II). The effect of reaction time, oxidants to Fe(II) ratio and pH on the TOC removal efficiency were investigated. For the effect of reaction time, the TOC removal was found to increase significantly for the first 5 min. TOC removal was found to increase with increasing concentration of Fe(II) for PMS. However, for Fe(II)/PS, the TOC removal efficiency was decreased with increasing Fe(II) concentration. Both Fe(II)/ PMS and Fe(II)/PS showed the highest TOC removal efficiency when the oxidation was carried out at pH 7. By using the selected optimum condition, nearly 70 and 49 % of TOC removal were achieved for PMS/Fe(II) and PS/Fe(II), respectively. Therefore, it can be concluded that SR-AOP can be a promising alternative method for TOC removal from sugarcane vinasse.

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

Cited by 226 publications

References 56 publications

Degradation of chloramphenicol by persulfate activated by Fe 2+ and zerovalent iron

Degradation of chloramphenicol by persulfate activated by Fe 2+ and zerovalent iron

Degradation of pharmaceuticals by ultrasound-based advanced oxidation process

Mineralization of organic matter from vinasse using physicochemical treatment coupled with Fe2+-activated persulfate and peroxymonosulfate oxidation

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