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- Title
ELECTROCHEMICAL REDUCTION-ADSORPTION PROCEDURE FOR THE REMOVAL OF NITROPHENOL CONTAMINANTS FROM AQUEOUS MEDIA.
- Authors
Tertis, Mihaela-Claudia; Jitaru, Maria; Coman, Virginia; Filip, Miuta; Lowy, Daniel A.
- Abstract
Work reported here was performed with the goal of reducing the concentration of 4-nitrophenol (4-NP) and 2,6-dinitrophenol (2,6-DNP), present in synthetic solutions to values below 0.5 mg L-1, the maximum concentration level tolerated by international environmental regulations [1, 2]. In the electrochemical reduction of 4-NP the final product was 4-aminophenol, as assessed by HPLC. Three methods were used for decreasing 4-NP and 2,6-DNP concentrations: electrochemical reduction, adsorption on active carbon, and the combined electrochemical reduction-adsorption. Best results were obtained by applying the combined procedure, which employed as the cathode granular activated carbon in fluidized bed. In these experiments 95-97% removal of 4-NP and 2,6-DNP from solutions occurred within the first 20 min.
- Subjects
NITROPHENOLS; ELECTROLYTIC reduction; ADSORPTION (Chemistry); ACTIVATED carbon; CATHODES; FLUIDIZATION; DINITROPHENOL; CARBON; ENVIRONMENTAL regulations
- Publication
Studia Universitatis Babes-Bolyai, Chemia, 2009, p151
- ISSN
1224-7154
- Publication type
Article