| 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 |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| 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
Previous Document: Residues of spiroxamine in grapes following field application and their fate from vine to wine.
Next Document: Synthesis of two major toxaphene components and their photostabilities.