期刊论文详细信息
Journal of the Brazilian Chemical Society
Diclofenac abatement using modified solar photo-fenton process with ammonium iron(III) citrate
Alam G. Trovó1  Raquel F. P. Nogueira1 
[1] ,Universidade Estadual Paulista Instituto de Química de Araraquara Araraquara SP ,Brazil
关键词: pharmaceutical;    wastewater;    advanced oxidation process;    iron complex;   
DOI  :  10.1590/S0103-50532011000600005
来源: SciELO
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【 摘 要 】

The influence of pH on the degradation of the pharmaceutical diclofenac (DCF) by the solar/photo-Fenton process was investigated using ammonium iron(III) citrate complex (FecitNH4). Although the degradation efficiency decreased as the pH increased (in the pH range 5 to 8), the DCF concentration was lower than its limit of detection after 45 min irradiation while 77% of the total organic carbon was removed after 150 min irradiation at initial pH 7 (without further adjustment). A pseudo-first-order kinetics of DCF degradation was observed, which kinetic constant increased with the increase of the concentrations of FecitNH4 and H2O2. Lower DCF degradation was observed when present in a sewage treatment plant (STP) effluent sample, mainly due to the high concentration of carbonate and bicarbonate at pH 7. However, after adjusting the pH to 5, the DCF concentration was lower than its detection limit after 75 min irradiation.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License

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