Photodegradation of the endocrine-disrupting chemicals 4n-nonylphenol and triclosan by simulated solar UV irradiation in aqueous solutions with Fe(III) and in the absence/presence of humic acids

2013 ◽  
Vol 251 ◽  
pp. 41-49 ◽  
Author(s):  
Marian Martínez-Zapata ◽  
Carolina Aristizábal ◽  
Gustavo Peñuela
Keyword(s):  
Aqueous Solutions ◽  
Uv Irradiation ◽  
Humic Acids ◽  
Endocrine Disrupting Chemicals ◽  
Endocrine Disrupting ◽  
Solar Uv

Simulated solar UV-irradiation of endocrine disrupting chemical octylphenol

2009 ◽  
Vol 164 (2-3) ◽  
pp. 1561-1567 ◽  
Author(s):  
Mariana Neamţu ◽  
Dana-Melania Popa ◽  
Fritz H. Frimmel
Keyword(s):  
Uv Irradiation ◽  
Endocrine Disrupting Chemical ◽  
Endocrine Disrupting ◽  
Solar Uv

Degrading two endocrine-disrupting chemicals from water by UV irradiation with the presence of nanophotocatalysts

2013 ◽  
Vol 51 (16-18) ◽  
pp. 3505-3520 ◽  
Author(s):  
Jin-Chung Sin ◽  
Sze-Mun Lam ◽  
Keat-Teong Lee ◽  
Abdul Rahman Mohamed
Keyword(s):  
Uv Irradiation ◽  
Endocrine Disrupting Chemicals ◽  
Endocrine Disrupting

Effect of Polyphosphate on Removal of Endocrine-Disrupting Chemicals of Nonylphenol and Bisphenol-A by Activated Carbons

2005 ◽  
Vol 40 (4) ◽  
pp. 484-490 ◽  
Author(s):  
Keun J. Choi ◽  
Sang G. Kim ◽  
Chang W. Kim ◽  
Seung H. Kim
Keyword(s):  
Activated Carbon ◽  
Bisphenol A ◽  
Surface Charge ◽  
Activated Carbons ◽  
Endocrine Disrupting Chemicals ◽  
Dipole Interaction ◽  
High Affinity ◽  
Calcium Polyphosphate ◽  
Endocrine Disrupting ◽  
Positively Charged

Abstract This study examined the effect of polyphosphate on removal of endocrine-disrupting chemicals (EDCs) such as nonylphenol and bisphenol-A by activated carbons. It was found that polyphosphate aided in the removal of nonylphenol and bisphenol- A. Polyphosphate reacted with nonylphenol, likely through dipole-dipole interaction, which then improved the nonylphenol removal. Calcium interfered with this reaction by causing competition. It was found that polyphosphate could accumulate on carbon while treating a river. The accumulated polyphosphate then aided nonylphenol removal. The extent of accumulation was dependent on the type of carbon. The accumulation occurred more extensively with the wood-based used carbon than with the coal-based used carbon due to the surface charge of the carbon. The negatively charged wood-based carbon attracted the positively charged calcium-polyphosphate complex more strongly than the uncharged coal-based carbon. The polyphosphate-coated activated carbon was also effective in nonylphenol removal. The effect was different depending on the type of carbon. Polyphosphate readily attached onto the wood-based carbon due to its high affinity for polyphosphate. The attached polyphosphate then improved the nonylphenol removal. However, the coating failed to attach polyphosphate onto the coal-based carbon. The nonylphenol removal performance of the coal-based carbon remained unchanged after the polyphosphate coating.

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