Reaction kinetics of humic acid with sodium hypochlorite

Trihalomethane (THM) in drinking water is formed by chlorination of humic substances. In this study, the rates of THM formation from precursors in the water of the Tormes river (Salamanca, Spain) using sodium hypochlorite as oxidant has been carried out. The oxidation kinetics were examined under co...

Full description

Saved in:
Bibliographic Details
Published in:Water research (Oxford) 1993, Vol.27 (5), p.815-820
Main Authors: Sánchez Jimenez, M.C., Pedraza Domínguez, A., Cachaza Silverio, J.M.
Format: Article
Language:English
Subjects:
Acids
Applied sciences
Chlorination
Contamination
drinking water
Drinking water and swimming-pool water. Desalination
Exact sciences and technology
humic substances
organic contaminants
Pollution
Q1
Sodium compounds
trihalomethane
Water treatment and pollution
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Trihalomethane (THM) in drinking water is formed by chlorination of humic substances. In this study, the rates of THM formation from precursors in the water of the Tormes river (Salamanca, Spain) using sodium hypochlorite as oxidant has been carried out. The oxidation kinetics were examined under conditions such that the formation of trihalomethane would be favoured, with a view to discovering the effect of different physico-chemical parameters on them such as pH, oxidant and humic acid (HA) concentration. A mechanistic model, based on the fact that on the macromolecule (HA) there are several sites that are highly reactive to sodium hypochlorite; is used to derive kinetic equations for the rate of THM formation as a function of humic acid and oxidant concentration under controlled pH and temperature conditions.
ISSN:0043-1354
1879-2448
DOI:10.1016/0043-1354(93)90145-8