Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 77, Issue 1-2, Pages 166-174Publisher
ELSEVIER
DOI: 10.1016/j.apcatb.2007.07.008
Keywords
OMW; low-molecular mass phenolic compounds; wet hydrogen peroxide photocatalytic oxidation (WHPCO); UV light; microtoxicity
Ask authors/readers for more resources
Wet hydrogen peroxide photodegradation, catalyzed by aluminium-iron pillared montmorillonite (Al-Fe)PILC, of a mixture of eight model phenolic compounds present in olive mill wastewater (OMW), has been studied. Important percentages of phenol abatement after the wet hydrogen peroxide photocatalytic oxidation (WHPCO) (86% and 70%) have been achieved after 24 h of the o-diphenolic compounds caffeic acid and hydroxytyrosol, respectively. Monophenolic compounds tyrosol, p-hydroxyphenylacetic acid and p-coumaric acid were the most resistant towards the WHPCO. The apparent rate constant k(phenolic molecule) decreased with increasing initial pollutant concentration of organic molecule when the other parameters remained unchanged. Almost similar results were obtained with real OMW obtained by ultrafiltration of crude OMW. The toxicity of model and real OMW against the bioluminescent bacteria Vibrio fisheri was significantly decreased by 74% and 68%, respectively after the WHPCO. The subsequent biological treatment using a methanogenic consortium removed the remaining phenolic compounds by more than 70% even with the most recalcitrant compounds. (C) 2007 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available