NDLI: Treatment of simulated berberine wastewater by electrochemical process with Pt/Ti anode

Content Provider	Springer Nature Link
Author	Tu, Xiang Xiao, Shuhu Song, Yonghui Zhang, Dongsheng Zeng, Ping
Copyright Year	2015
Abstract	The emergence of antibiotics in aquatic environment has led to an increasing concern about the potential environmental risks and the spread of antibacterial resistance among microorganisms. Electrochemical oxidation processes are promising technologies to treat low contents of toxic and bio-refractory pollutants in water. Anodic oxidation of berberine, the frequently detected antibiotic in surface waters, was carried out by using RuO$_{2}$/Ti, IrO$_{2}$/Ti, RuIrO$_{2}$/Ti, and Pt/Ti electrodes. It showed that with Pt/Ti anode, the removal efficiency of berberine was significantly higher than that with the other electrodes. Moreover, all the four electrodes showed 3–5 times higher reaction rate constant in NaCl solution than in Na$_{2}$SO$_{4}$ solution. The addition of chloride salts increased the oxidation rate of berberines due to the formation of active chlorines. In the case of Pt/Ti anode and simulated berberine wastewater, the effects of applied anodic bias, initial pH, Cl$^{−}$ and berberine concentrations, and reaction time on the removal efficiency of berberines were investigated. Under the optimal conditions of applied bias of 2.0 V, initial pH of 5.0, and Cl$^{−}$ concentration of 0.1 mol/L, the removal efficiency was higher than 90.0 % after 1-h reaction when the berberine concentration was lower than 50 mg/L. The acute toxicity of the simulated berberine wastewater could be largely reduced under the optimum conditions. Ultraviolet–visible adsorption spectra and excitation–emission matrix fluorescence spectra also confirmed that although berberines could not be fully mineralized after 1 h of electrochemical treatment, most of them were easily oxidized and decomposed by the electrolysis, thus forming some intermediate products with simple aromatic structures. Based on the results obtained, the electrochemical process with Pt/Ti electrode can be a feasible alternative as a post-treatment or treatment for berberine wastewater.
Starting Page	4957
Ending Page	4966
Page Count	10
File Format	PDF
ISSN	18666280
Journal	Environmental Earth Sciences
Volume Number	73
Issue Number	9
e-ISSN	18666299
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-04-02
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Berberine wastewater Electrochemical treatment Pt/Ti anode Active chlorines Removal efficiency Geology Hydrology/Water Resources Geochemistry Environmental Science and Engineering Terrestrial Pollution Biogeosciences
Content Type	Text
Resource Type	Article
Subject	Global and Planetary Change Earth-Surface Processes Soil Science Environmental Chemistry Pollution Geology Water Science and Technology

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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