Tags

Type your tag names separated by a space and hit enter

Fe(3+)- and Cu(2+)-reduction by phenol derivatives associated with Azure B degradation in Fenton-like reactions.
Chemosphere. 2007 Jan; 66(5):947-54.C

Abstract

Several phenol derivatives were evaluated regarding their capacities for Fe(3+) and Cu(2+) reduction. Selected compounds were assayed in Fenton-like reactions to degrade Azure B. 3,4-Dihydroxyphenylacetic, 2,5-dihydroxyterephtalic, gallic, chromotropic and 3-hydroxyanthranilic acids were the most efficient reducers of both metallic ions. The reaction system composed of 3-hydroxyanthranilic acid/Fe(3+)/H(2)O(2) was able to degrade Azure B at higher levels than the conventional Fenton reaction (87% and 75% of decolorization after 20min reaction, respectively). Gallic and syringic acids, catechol and vanillin induced Azure B degradations at lower levels as compared with conventional Fenton reaction. Azure B was not degraded in the presence of 10% (v/v) methanol or ethanol, which are OH radical scavengers, confirming the participation of this radical in the degradation reactions. Iron-containing reactions consumed substantially more H(2)O(2) than reactions containing copper. In iron-containing reactions, even the systems that caused a limited degradation of the dye consumed high concentrations of H(2)O(2). On the other hand, the reactions containing Fe(3+), H(2)O(2) and 3-hydroxyanthranilic acid or 3,4-dihydroxyphenylacetic acid were the most efficient on degradation of Azure B and also presented the highest H(2)O(2) consumption. These results indicate that H(2)O(2) consumption occurs even when the dye is not extensively degraded, suggesting that part of the generated OH radicals reacts with the own phenol derivative instead of Azure B.

Authors+Show Affiliations

Departamento de Biotecnologia, Faculdade de Engenharia Química de Lorena, CP 116, 12600-970 Lorena, SP, Brazil.No affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16839591

Citation

Aguiar, André, and André Ferraz. "Fe(3+)- and Cu(2+)-reduction By Phenol Derivatives Associated With Azure B Degradation in Fenton-like Reactions." Chemosphere, vol. 66, no. 5, 2007, pp. 947-54.
Aguiar A, Ferraz A. Fe(3+)- and Cu(2+)-reduction by phenol derivatives associated with Azure B degradation in Fenton-like reactions. Chemosphere. 2007;66(5):947-54.
Aguiar, A., & Ferraz, A. (2007). Fe(3+)- and Cu(2+)-reduction by phenol derivatives associated with Azure B degradation in Fenton-like reactions. Chemosphere, 66(5), 947-54.
Aguiar A, Ferraz A. Fe(3+)- and Cu(2+)-reduction By Phenol Derivatives Associated With Azure B Degradation in Fenton-like Reactions. Chemosphere. 2007;66(5):947-54. PubMed PMID: 16839591.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Fe(3+)- and Cu(2+)-reduction by phenol derivatives associated with Azure B degradation in Fenton-like reactions. AU - Aguiar,André, AU - Ferraz,André, Y1 - 2006/07/12/ PY - 2006/01/19/received PY - 2006/05/29/revised PY - 2006/05/30/accepted PY - 2006/7/15/pubmed PY - 2007/3/14/medline PY - 2006/7/15/entrez SP - 947 EP - 54 JF - Chemosphere JO - Chemosphere VL - 66 IS - 5 N2 - Several phenol derivatives were evaluated regarding their capacities for Fe(3+) and Cu(2+) reduction. Selected compounds were assayed in Fenton-like reactions to degrade Azure B. 3,4-Dihydroxyphenylacetic, 2,5-dihydroxyterephtalic, gallic, chromotropic and 3-hydroxyanthranilic acids were the most efficient reducers of both metallic ions. The reaction system composed of 3-hydroxyanthranilic acid/Fe(3+)/H(2)O(2) was able to degrade Azure B at higher levels than the conventional Fenton reaction (87% and 75% of decolorization after 20min reaction, respectively). Gallic and syringic acids, catechol and vanillin induced Azure B degradations at lower levels as compared with conventional Fenton reaction. Azure B was not degraded in the presence of 10% (v/v) methanol or ethanol, which are OH radical scavengers, confirming the participation of this radical in the degradation reactions. Iron-containing reactions consumed substantially more H(2)O(2) than reactions containing copper. In iron-containing reactions, even the systems that caused a limited degradation of the dye consumed high concentrations of H(2)O(2). On the other hand, the reactions containing Fe(3+), H(2)O(2) and 3-hydroxyanthranilic acid or 3,4-dihydroxyphenylacetic acid were the most efficient on degradation of Azure B and also presented the highest H(2)O(2) consumption. These results indicate that H(2)O(2) consumption occurs even when the dye is not extensively degraded, suggesting that part of the generated OH radicals reacts with the own phenol derivative instead of Azure B. SN - 0045-6535 UR - https://www.unboundmedicine.com/medline/citation/16839591/Fe_3+___and_Cu_2+__reduction_by_phenol_derivatives_associated_with_Azure_B_degradation_in_Fenton_like_reactions_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(06)00729-6 DB - PRIME DP - Unbound Medicine ER -