Experimental investigation on the effect of wastewater matrix on oxytetracycline mineralization using UV/H2O2 system

Rahmah, Anisa Ur; Harimurti, Sabtanti

doi:10.1007/s13762-016-1226-6

Cited by 34 publications

(7 citation statements)

References 38 publications

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“…The major impact of bicarbonate on the decrease in removal efficiency can be caused by the dissociation constant (K a ) being greater than that of the other anions. Moreover, this is from the fact that the bicarbonate IFE has greater effects compared to other anions. , eqs to describe the reaction of bicarbonate, chloride, nitrate, and sulfate, respectively, with • OH radicals. , …”

Section: Resultsmentioning

confidence: 99%

Degradation of Ofloxacin Using the UV/ZnO/Iodide Process in an Integrated Photocatalytic-Biological Reactor Containing Baffles

Azizi

Alidadi

Mâaza

et al. 2020

Ind. Eng. Chem. Res.

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The goal of this study is to achieve zero waste with a UV/ Iodide/ZnO (UIZ)-based integrated photocatalytic-biological reactor (IPBR) containing baffles that has been devised to degrade ofloxacin (OFX) completely. The efficiency of the photoreactor was determined by first investigating the removal of OFX through the UIZ, UV/Iodide, UV/ ZnO, and UV-only treatments, which resulted in the degradation of 97−100, 57.9−71.4, 47.8−67.5, and 37.9−42.5%, of the OFX molecules, respectively. The optimization result obtained 0.87:1:50 as the optimal molar ratio of Iodide/ZnO/OFX. Information about the liquid chromatography-mass spectroscopy on the effluents obtained from the UIZ process revealed that the OFX molecules degrade into ring-shaped compounds and then into linear molecules within 15 min. The application of the pseudo-first-order kinetics model indicated that the observed rate constant (k obs ) of the photochemical process and the associated rate (r obs ), respectively, increase from 0.4109 to 0.1371 min −1 and from 4.109 to 27.42 mg L −1 min −1 when the OFX concentration increases from 10 to 200 mg L −1 . The proposed integrated reactor was found to be a promising technology for the complete removal of OFX from wastewaters. The carbon oxidation state (COS) level increases sharply from −1.29 to 0.52 after 10 min of treatment in the UIZ reactor and also increases from 0.52 to 1.29 at 30 min and from 2.37 to 3.04 at 480 min of the biological process. The average oxidation state (AOS) level was found to be around 3.58.

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Section: Resultsmentioning

confidence: 99%

Degradation of Ofloxacin Using the UV/ZnO/Iodide Process in an Integrated Photocatalytic-Biological Reactor Containing Baffles

Azizi

Alidadi

Mâaza

et al. 2020

Ind. Eng. Chem. Res.

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“…Typically, the TOC contributor components in the water matrix may compete with the target organic contaminant during the degradation process, so the effects of other coexisting organic components (including phenol, acetaldehyde and acetic acid) on aniline degradation by the DDBD/MB system were studied. As shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Treatment of aniline contaminated water by a self‐designed dielectric barrier discharge reactor coupling with micro‐bubbles: optimization of the system and effects of water matrix

Liu

Shen

Sun

et al. 2018

J of Chemical Tech & Biotech

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BACKGROUND A self‐designed dielectric barrier discharge reactor coupling with micro‐bubbles (DBD/MB) system is proposed as a promising method to remove aniline in waste water. The optimum geometric dimensions of the reactor and the operating parameters of the DBD/MB system as well as the influence of the water matrix (including cations, anions, and coexisting organics) were investigated. The functional mechanisms of the DBD/MB system were explored. RESULTS By setting the double‐dielectric barrier discharge reactor (DDBD) with electrode gap as 5 mm, discharge voltage as 50 kV, and air intake flow of the MB generator as 40 mL min−1, the aniline removal efficiency reached 82% within an hour. The removal efficiency could be promoted by the presence of metal ions (Cu2+, Fe2+ and Mn2+), while it was also found that with the presence of certain anions (CO32−, Cl−, NO3− and SO42−), the degradation process was inhibited by more than 40%. The coexisting organics did not influence aniline removal. Active species (•OH, H2O2 and O3) generated in the DDBD/MB treatment and micro‐bubbles played important roles in the aniline degradation process. CONCLUSIONS This study provides fundamental information for the application of a DDBD/MB system to effectively remove aniline from water. © 2018 Society of Chemical Industry

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“…The presence of HCO − 3 promoted the photochemical loss of OTC in aqueous solution by generating hydroxyl radicals and increasing the solution pH towards alkaline range (Rahmah et al, 2017).…”

Section: Second-order Reaction Equationmentioning

confidence: 99%

“…Another reason for enhanced degradation under high salinity may be due to the presence of inorganic ions such as carbonate (Liu et al, 2015) and bicarbonate. The presence of

{HCO}_{3}^{‐}

promoted the photochemical loss of OTC in aqueous solution by generating hydroxyl radicals and increasing the solution pH towards alkaline range (Rahmah et al, 2017).…”

Section: Figurementioning

confidence: 99%

Effect of abiotic factors on the degradation of oxytetracycline in water

Saraswathy

Kumararaja

Patil

et al. 2021

Aquaculture Research

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Experimental investigation on the effect of wastewater matrix on oxytetracycline mineralization using UV/H2O2 system

Cited by 34 publications

References 38 publications

Degradation of Ofloxacin Using the UV/ZnO/Iodide Process in an Integrated Photocatalytic-Biological Reactor Containing Baffles

Degradation of Ofloxacin Using the UV/ZnO/Iodide Process in an Integrated Photocatalytic-Biological Reactor Containing Baffles

Treatment of aniline contaminated water by a self‐designed dielectric barrier discharge reactor coupling with micro‐bubbles: optimization of the system and effects of water matrix

Effect of abiotic factors on the degradation of oxytetracycline in water

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