The STUDIA UNIVERSITATIS BABEŞ-BOLYAI issue article summary

The summary of the selected article appears at the bottom of the page. In order to get back to the contents of the issue this article belongs to you have to access the link from the title. In order to see all the articles of the archive which have as author/co-author one of the authors mentioned below, you have to access the link from the author's name.

  
       
         
    STUDIA CHEMIA - Issue no. 2 / 2006  
         
  Article:   ADSORPTION AND ELECTROCHEMICAL DATA FOR P-NITROPHENOL REMOVAL FROM SYNTHETIC WASTEWATERS.

Authors:  MARIA JITARU, BOGDANA KOUMANOVA. 		 
       
         
  Abstract:  There are three main results reported in this paper refer to: (i) the equilibrium adsorption experiments of recalcitrant toxic p-nitrophenol (p-NP) on natural zeolites from Balkan area; (ii)voltamperommetric data on the electrochemical behavior of p-nitrophenol, depending on the electrode nature and working conditions (pH, electrolyte composition, hydrodynamic parameters (iii) and electrochemical oxidation to remove the remaining p-nitrophenol on different electrodes after the adsorption. The zeolite from Mirsid, Romania (zeolite-2) seems to have the best adsorption properties for p-nitro phenol, comparing to classical sorbent, active carbon powder. The synthetic waste waters containing 0.01p-NP have been treated by adsorption on (zeolite-2) and the decrease of the p-NF concentration up to 0.01 mM has been obtained. The remaining p-NP was treated by electrochemical way (electro-oxidation). Applying the combined adsorptive-electrochemical oxidation procedure we have been obtained the decrease of COT up to 98%, on SnO2/IrO2/Ti (Modified Oxides Electrode- MOE). These results could be explained by the catalytic effect of the zeolite for the chemical phenol oxidation.  
         
     
         
         
      Back to previous page