Electrochemical degradation of tetracycline

Vedenyapina, M. D.; Eremicheva, Yu. N.; Павлов, В. А.; Vedenyapin, A. A.

doi:10.1134/s1070427208050145

Cited by 13 publications

(5 citation statements)

References 2 publications

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“…This is in agreement with the result reported by Vedenyapina et al . [12] The pseudo-first-order rate constants calculated are 0.018, 0.028, 0.035 and 0.046 min −1 for 15.9, 31.7, 47.6 and 63.5 mA cm −2 , respectively, which indicates the rate constants almost linearly increase with increasing current density (Fig. 3(b)).…”

Section: Effect Of Current Densitymentioning

confidence: 84%

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Degradation of tetracycline in aqueous medium by electrochemical method

Zhang¹,

Liu²,

Wu³

et al. 2009

Asia-Pacific J Chem Eng

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The degradation of tetracycline by anode oxidation with Ti/RuO 2 -IrO 2 electrode was carried out in an electrochemical cell. The effect of operating conditions such as electrical current density, initial pH, antibiotic concentration, electrolyte concentration and hydroxyl radical scavenger on the oxidation of tetracycline was investigated. The results showed that the degradation of tetracycline followed apparent pseudo-first-order kinetics. The rate constant increased linearly with the current density, but the oxidation curves displayed the same dependence on the amount of the specific charge passed. The degradation rate decreased with the initial antibiotic concentration. Either initial pH or electrolyte concentration had little effect on the electrochemical oxidation of tetracycline. The presence of tertbutanol did not hinder the degradation rate, indicating the radical contribution to the oxidation of tetracycline could be neglected. 

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Section: Effect Of Current Densitymentioning

confidence: 84%

“…E-mail: eeng@whu.edu.cn Vedenyapina et al . [12] used an electrochemical cell with separated cathodic and anodic compartments to oxidize tetracycline with the initial concentration ranging from 50 to 500 mg l −1 . Weichgrebe et al .…”

Section: Introductionmentioning

confidence: 99%

Degradation of tetracycline in aqueous medium by electrochemical method

Zhang¹,

Liu²,

Wu³

et al. 2009

Asia-Pacific J Chem Eng

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“…Reducing the antibacterial activity of a tetracycline solution does not necessarily require its complete mineralization. All that is needed is to break down the initial tetracycline molecules (Vedenyapina et al, 2008). Effluent mineralization can subsequently be completed during biological treatment; the potential advantages of the strategy of combining physicochemical and 6 biological processes to treat contaminants in wastewater have previously been described Ollis, 1995, 1997;Pulgarin et al, 1999;Farré, et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Combined process for removal of tetracycline antibiotic – Coupling pre-treatment with a nickel-modified graphite felt electrode and a biological treatment

Belkheiri

Fourcade

Geneste

et al. 2015

International Biodeterioration & Biodegradation

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a b s t r a c tBiodegradability improvement of tetracycline-containing solutions after an electrochemical pretreatment was examined. Cyclic voltammetry with a nickel electrode revealed a significant electrochemical activity of tetracycline, in both oxidation and reduction. Electrochemical treatment was therefore performed in a home-made flow cell using a nickel-modified graphite felt electrode as the working electrode. Optimal conditions, namely 100 mg l À1 initial tetracycline, above 0.45 V potential, and between 1 and 6 ml min À1 flow rate, led to a more than 99% conversion yield of tetracycline in oxidation in alkaline conditions, after only a single pass through the percolation cell. However, total organic carbon (TOC) analyses revealed a low mineralization level, i.e., always below 31%, underscoring the importance of a combined electrochemical and biological treatment. This was confirmed by the favorable trends of the COD/TOC ratio, decreasing from 2.7 to 1.9, and the average oxidation state, increasing from 0.044 to 1.15, before and after oxidation pretreatment at 0.7 V and 3 ml min À1 flow rate. Electrolyzed solutions appeared biodegradable, since BOD 5 /COD increased from 0 to 0.46 for untreated and pretreated TC at 0.7 V/SCE. Biological treatment showed only biosorption for non-pretreated tetracycline, while after 11.5 days of culture, the mineralization of solutions electrolyzed in oxidation was 54%, leading to a 69% overall TOC decrease during the combined process.

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“…It is important to note that for both in methanol (with or without the presence of water) and in aqueous media, the concentration decay of TeC with both anodes obeys a first order kinetics. This behavior is very common in the removal of organic compounds by electrochemical oxidation in aqueous medium (Malpass and Motheo, 2001;Vedenyapina et al, 2008;Parra et al, 2016;Santos et al, 2020a). The values for the first order kinetics constants are shown in the Table 1.…”

Section: Kinetic Analysismentioning

confidence: 96%