Can I read Combined photo-Fenton and biological treatment for Diuron and Linuron removal from water containing humic acid on EtoBox?

Combined photo-Fenton and biological treatment for Diuron and Linuron removal from water containing humic acid by María José Farré; Xavier Doménech; José Peral is a Environmental Science article available to read on EtoBox.

What is Combined photo-Fenton and biological treatment for Diuron and Linuron removal from water containing humic acid about?

A combined chemical (photo-Fenton) and biological treatment has been proposed for Diuron and Linuron degradation in water containing natural dissolved organic matter (DOM). Humic acid (HA) was used to simulate the DOM. During the photo-Fenton process ([Fe(II)] = 15.9 mg L -1 , [H 2 O 2 ] = 202 mg L -1 , 60 min of UVA irradiation time), the chemical oxygen demand (COD), total organic carbon (TOC), toxicity (EC 15 50 ) and biodegradability (BOD 5 /COD) of the generated intermediates were assessed. A reduction of photo-Fenton efficiency was observed when HA was present in solution. This effect has been explained as the result of a UVA light screening as well as a OH • radical quenching process by the HA. After the photo-Fenton process, the initial toxic and non-biodegradable herbicides were transformed into intermediates suitable for a subsequent aerobic biological treatment that was performed in a sequencing batch reactor (SBR). Complete elimination of the intermediates in presence of HA was reached at the end of the chemical-biological coupled system. Biosorption of HA onto the aerobic biomass was characterized. The results indicate that the Freundlich model adequately describes the

Who reads Combined photo-Fenton and biological treatment for Diuron and Linuron removal from water containing humic acid?

Author

María José Farré; Xavier Doménech; José Peral

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0304-3894)

Published

2007

Language

EN

Field

Environmental Science (Physical Sciences)