Fate of organic nitrogen during electrooxidation over conductive metal oxide anodes

被引：13

作者：

Di Giulio, Simona ^{[1
]}

Jara, Carlos Carlesi ^{[1
]}

Fino, Debora ^{[1
]}

Saracco, Guido ^{[1
]}

Specchia, Vito ^{[1
]}

Spinelli, Paolo ^{[1
]}

机构：

[1] Politecn Torino, Dept Mat Sci & Chem Engn, I-10129 Turin, Italy

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2007年 / 46卷 / 21期

关键词：

D O I：

10.1021/ie061693g

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The electrooxidation of nitrogen-containing molecules (urea, reactive dye blue 4, acetonitrile, formamide, guanidine, and pyridazine) over Pt-Ti and Ti/RuO2 anodes is investigated. The product distribution of the electrochemical mineralization of nitrogen is monitored. Nitrogen mineralization generally leads to inorganic pollutants (NH3/NH4+ and/or nitrite and nitrate ions). Amidic and aminic compounds were found to react according to both homogeneous (acid hydrolysis) and heterogeneous (direct electrooxidation) pathways, with a rate depending on the original state of oxidation of nitrogen. Heterocyclic and multiple-bond carbon-nitrogen molecules were converted but with negligible mineralization of nitrogen due to the stability of their first oxidation intermediates. The obtained results can be useful for the design of further treatment routes after electrooxidation or the definition of simultaneous strategies for inorganic pollutants elimination.

引用

页码：6783 / 6787

页数：5

共 23 条

[1] Electrochemical destruction of chlorophenoxy herbicides by anodic oxidation and electro-Fenton using a boron-doped diamond electrode [J].

Brillas, E ;

Boye, B ;

Sirés, I ;

Garrido, JA ;

Rodríguez, RM ;

Arias, C ;

Cabot, PL ;

Comninellis, C .

ELECTROCHIMICA ACTA, 2004, 49 (25) :4487-4496

[2]

CABEZA A, 2006, E P 1 EUR C ENV APPL

[3] The fate of organic nitrogen in photocatalysis: an overview [J].

Calza, P ;

Pelizzetti, E ;

Minero, C .

JOURNAL OF APPLIED ELECTROCHEMISTRY, 2005, 35 (7-8) :665-673

[4]

COMNINELLIS C, 1993, J APPL ELECTROCHEM, V23, P108

[5] Test of vanadium pentoxide as anode for the electrooxidation of toluene -: A theoretical approach of the electrode process [J].

D'Elia, LF ;

Rincón, L ;

Ortíz, R .

ELECTROCHIMICA ACTA, 2004, 50 (01) :217-224

[6] The role of adsorbates in the electrochemical oxidation of ammonia on noble and transition metal electrodes [J].

de Vooys, ACA ;

Koper, MTM ;

van Santen, RA ;

van Veen, JAR .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2001, 506 (02) :127-137

[7]

DIGIULIO S, 2007, UNPUB

[8]

Fahidy TZ., 1985, Principles of electrochemical reactor analysis

[9]

GALLONE P, 1973, TRATTATO INGEGNERIA

[10] Oxidation of carboxylic acids at boron-doped diamond electrodes for wastewater treatment [J].

Gandini, D ;

Mahé, E ;

Michaud, PA ;

Haenni, W ;

Perret, A ;

Comninellis, C .

JOURNAL OF APPLIED ELECTROCHEMISTRY, 2000, 30 (12) :1345-1350

← 1 2 3 →