Advanced Oxidation Process

Advanced Oxidation Process

Advanced Oxidation Processes (abbreviation: AOP), refers to a set of chemical treatment procedures designed to remove organic and inorganic materials in waste water by oxidation.

Contaminants are oxidized by four different reagents: ozone, hydrogen peroxide, oxygen, and air, in precise, pre-programmed dosages, sequences, and combinations. These procedures may also be combined with UV irradiation and specific catalysts. This results in the development of hydroxyl radicals. A well known example of AOP is the use of Fenton's reagent.

The AOP procedure is particularly useful for cleaning biologically toxic or non-degradable materials such as aromatics, pesticides, petroleum constituents, and volatile organic compounds in waste water [cite journal |author=Enric Brillasa, Eva Mur, Roser Sauleda, Laura Sànchez, José Peral, Xavier Domènech and Juan Casado
title=Aniline mineralization by AOP's: anodic oxidation, photocatalysis, electro-Fenton and photoelectro-Fenton processes |journal=Applied Catalysis B: Environmental |volume=16 |issue=1 |pages=31-42 |year=1998 |month=March |pmid= |doi= 10.1016/S0926-3373(97)00059-3 |url=http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TF6-3VN03K2-3&_user=10&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_version=1&_urlVersion=0&_userid=10&md5=d557b71411fdce56af991813ef191bf7] . The contaminant materials are converted to a large extent into stable inorganic compounds such as water, carbon dioxide and salts, i.e. they undergo mineralization. A goal of the waste water purification by means of AOP procedures is the reduction of the chemical contaminants and the toxicity to such an extent that the cleaned waste water may be reintroduced into receiving streams or, at least, into a conventional sewage treatment.

ee also

* Waste water treatment
* Sewage treatment
* Water purification
* Process engineering

References

*Michael OD Roth: "Chemical oxidation: Technology for the Nineties, volume VI: Technologies for the Nineties: 6 (Chemical oxidation)" W. Wesley corner fields and John A. Roth, Technomic Publishing CO, Lancaster among other things. 1997, ISBN 1566765978. (engl.)

*cite book
last =Oppenländer
first =Thomas
authorlink =
coauthors =
year =2003
title =Advanced Oxidation Processes (AOPs): Principles, Reaction Mechanisms, Reactor Concepts
publisher =Wiley VCH, Weinheim
location =
id =ISBN 3-527-30563-7

External links

* [http://www.radical.gb.com Advanced Oxidation being used as advanced sanitising technology in the food industry - www.radical.gb.com]

* [http://www.ecospheretech.com/index.php/technology/ozonix-process Advanced oxidation water treatment process demonstration]


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