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Catalytic wet peroxide photo-oxidation of phenolic olive oil mill wastewater contaminants: Part II. Degradation and detoxification of low-molecular mass phenolic compounds in model and real effluent

Paper ID Volume ID Publish Year Pages File Format Full-Text
48648 46516 2007 9 PDF Available
Title
Catalytic wet peroxide photo-oxidation of phenolic olive oil mill wastewater contaminants: Part II. Degradation and detoxification of low-molecular mass phenolic compounds in model and real effluent
Abstract

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 kphenolic 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.

Keywords
OMW; Low-molecular mass phenolic compounds; Wet hydrogen peroxide photocatalytic oxidation (WHPCO); UV light; Microtoxicity
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Catalytic wet peroxide photo-oxidation of phenolic olive oil mill wastewater contaminants: Part II. Degradation and detoxification of low-molecular mass phenolic compounds in model and real effluent
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 77, Issues 1–2, 30 November 2007, Pages 166–174
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us