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Titolo:
Simultaneous organic nitrogen and sulfate removal in an anaerobic GAC fluidised bed reactor
Autore:
Fdz-Polanco, F; Fdz-Polanco, M; Fernandez, N; Uruena, MA; Garcia, PA; Villaverde, S;
Indirizzi:
Univ Valladolid, Dept Chem Engn, E-47011 Valladolid, Spain Univ Valladolid Valladolid Spain E-47011 Engn, E-47011 Valladolid, Spain Inst Super Politecn Jose Antonio Echevarria, Havana, Cuba Inst Super Politecn Jose Antonio Echevarria Havana Cuba a, Havana, Cuba
Titolo Testata:
WATER SCIENCE AND TECHNOLOGY
fascicolo: 4, volume: 44, anno: 2001,
pagine: 15 - 22
SICI:
0273-1223(2001)44:4<15:SONASR>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
OXIDATION; AMMONIUM;
Keywords:
anaerobic nitrogen removal; GAC fluidised bed reactor; industrial wastewater; sulphate reduction;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
9
Recensione:
Indirizzi per estratti:
Indirizzo: Fdz-Polanco, F Univ Valladolid, Dept Chem Engn, E-47011 Valladolid, Spain Univ Valladolid Valladolid Spain E-47011 alladolid, Spain
Citazione:
F. Fdz-Polanco et al., "Simultaneous organic nitrogen and sulfate removal in an anaerobic GAC fluidised bed reactor", WATER SCI T, 44(4), 2001, pp. 15-22

Abstract

A granular activated carbon (GAC) anaerobic fluidised bed reactor treatingvinasse from an ethanol distillery of sugar beet molasses was operated for250 days under three different organic loading rates. The reactor showed good performance in terms of organic matter removal and methane production but an anomalous behaviour in terms of unusual high concentrations of molecular nitrogen and low concentration of hydrogen sulphide in the biogas. The analysis of the different nitrogenous and sulphur compounds and the mass balances of these species in the liquid and gas phases clearly indicated an uncommon evolution of nitrogen and sulphur in the reactor. Up to 55% of the TKN and up to 80% of the sulphur disappear in the liquid phase This is the opposite to any previously reported results in the bibliography. The new postulated anaerobic process of ammonia and sulphate removal seems to follow the mechanism: SO4 = +2 NH4+ --> S + N-2 + 4 H2O (Delta G degrees = - 47.8 kJ/mol).

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/09/20 alle ore 17:06:06