Document Detail


Fenton's oxidation of food processing wastewater components. Kinetic modeling of protocatechuic acid degradation.
MedLine Citation:
PMID:  16366701     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The oxidation of protocatechuic acid (PA), a typical phenol-type compound present in food processing wastewater, has been carried out by means of Fenton's reagent. Both the H2O2 and Fe(II) initial concentrations increase the PA degradation rate. Temperature also enhances the PA conversion when raised from 283 to 313 K, a further increase to 323 K results in a lower PA removal. Increasing the PA initial concentration leads to a decrease of conversion values but an opposite effect in terms of removal rate. pH values in the range 3-4 resulted in the total inhibition of the oxidation process. Similar PA depletion rates were experienced regardless of the oxidation state of the catalyst (ferrous or ferric iron). Additionally, an attempt based on the classic Fenton's chemistry plus some other stages accounting for the Fe(II) regeneration from Fe(III) and the inefficient H2O2 decomposition was conducted to model the process.
Authors:
Francisco J Rivas; Jesús Frades; Miguel A Alonso; C Montoya; J M Monteagudo
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of agricultural and food chemistry     Volume:  53     ISSN:  0021-8561     ISO Abbreviation:  J. Agric. Food Chem.     Publication Date:  2005 Dec 
Date Detail:
Created Date:  2005-12-21     Completed Date:  2006-02-03     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0374755     Medline TA:  J Agric Food Chem     Country:  United States    
Other Details:
Languages:  eng     Pagination:  10097-104     Citation Subset:  IM    
Affiliation:
Departamento de Ingeniería Química y Energética, Universidad de Extremadura, Avenida de Elvas s/n, 06071 Badajoz. Spain. fjrivas@unex.es
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MeSH Terms
Descriptor/Qualifier:
Catalysis
Food Industry*
Hydrogen Peroxide / chemistry
Hydroxybenzoic Acids / chemistry*
Industrial Waste / analysis*
Iron
Kinetics
Oxidation-Reduction
Temperature
Chemical
Reg. No./Substance:
0/Fenton's reagent; 0/Hydroxybenzoic Acids; 0/Industrial Waste; 7439-89-6/Iron; 7722-84-1/Hydrogen Peroxide; 99-50-3/protocatechuic acid

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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