2015-Sustainable Industrial Processing Summit
SIPS 2015 Volume 11: Recycling & Environmental
| Editors: | Kongoli F, Havlik T, Pagnanelli F |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2015 |
| Pages: | 410 pages |
| ISBN: | 978-1-987820-34-8 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Photoelectrocatalytic Degradation of Pharmaceutical Compounds to Water Recycle on the Pharmaceutical Industry
Salatiel Wohlmuth da Silva1; Alexia Santos2; alvaro meneguzzi2; Marco Antonio Siqueira Rodrigues3; Andrea Moura Bernardes2;1UNIVERSIDADE FEDERAL DO RIO GRANDE DO SUL, Porto Alegre, Brazil; 2UFRGS, Porto Alegre, Brazil; 3FEEVALE, Porto Alegre, Brazil;
Type of Paper: Regular
Id Paper: 19
Topic: 7
Abstract:
One of the main pollutants of water are active pharmaceuticals compounds (PhACs) produced by pharmaceutical companies. These PhACs, reach the water bodies through incomplete removal in conventional effluent treatment plants. Therefore, processes that are more effective should be investigated. The objective of this study was to apply the photoelectrocatalysis process in the treatment of the effluent of the pharmaceuticals industry containing PhACs aiming process water reuse. The initial effluent was prepared by dilution of the norfloxacin in distilled and deionized water to a final concentration of 200 Aµg/L. A concentration of 2 g/L Na2SO4 was added as a support electrolyte. The reactor used was a jacket borosilicate glass reactor with a capacity of 3 L, connected to an ultra-thermostatic bath. The anode was dimensionally stable (DSAA®) and composed of (70-30%) TiO2RuO2-Ti, while the cathode was composed of TiO2-Ti. The electrodes remained under UV radiation by a 250 W high-pressure commercial mercury vapor lamps, without the glass bulb and inside a quartz tube. 5 L of the initial effluent was placed in the reservoir that feeds the reactor at an average flow rate of 1 L/min with the aid of a peristaltic pump. The experiments were conducted 6 times. The effluent samples were collected before and after the photoelectrocatalytic (PEC) treatment and characterized by different analytical methods: UV/Vis spectroscopy, pH and TOC. The preliminary results of UV/Vis showed that the norfloxacin absorb UV radiation in the wavelength of 273 nm (UV-C) and can be degraded by direct photolysis. The UV radiation source used in this experiment exhibited a single absorbance peak at 365 nm, i.e. the photocatalysis will be favored. The TOC results exhibit a TOC reduction after the PEC process.
Keywords:
Photoelectrocatalysis; Active pharmaceuticals compounds; NorfloxacinReferences:
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