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Titolo:
KINETICS OF MONOCHLORAMINE REACTIONS WITH NITRITE
Autore:
HAO OJ; CHIEN CM; VALENTINE RL;
Indirizzi:
UNIV MARYLAND,DEPT CIVIL ENGN COLL PK MD 20742 SUPER MAX ENGN CO TAIPEI TAIWAN UNIV IOWA,DEPT CIVIL & ENVIRONM ENGN IOWA CITY IA 52242
Titolo Testata:
Journal of environmental engineering
fascicolo: 4, volume: 120, anno: 1994,
pagine: 859 - 874
SICI:
0733-9372(1994)120:4<859:KOMRWN>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
CHLORAMINATED WATER; DISTRIBUTION-SYSTEM; NITRIFICATION; DECOMPOSITION; HYPOCHLORITE; OXIDATION; BACTERIAL; CHLORINE; IONS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
31
Recensione:
Indirizzi per estratti:
Citazione:
O.J. Hao et al., "KINETICS OF MONOCHLORAMINE REACTIONS WITH NITRITE", Journal of environmental engineering, 120(4), 1994, pp. 859-874

Abstract

Kinetics of reactions in solutions containing monochloramine and nitrite were evaluated as a function of pH, temperature, excess ammonium, and initial concentrations of monochloramine and nitrite. The NH2Cl disappearance rates followed a first-order reaction with respect to [NH2Cl]. The observed reaction rates for nitrite were proportional to [NO2-] (I + constant [NO2-]). The rate of the reaction was inversely proportional to [NH3]T. The activation energy at pH 7 was relatively low, 13.4 kJ. Phosphate catalyzed the NH2Cl-NO2- reaction. The analysis of both reactant and by-product concentrations indicated that nitrogen in NO2- was not fully oxidized to NO3-, nitrogen in NH2Cl was not completely converted to NH4+, and the stoichiometric molar ratio of the disappearance of NH2Cl/NO2-was not exactly 1.

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Documento generato il 09/07/20 alle ore 14:15:45