Data/hora: 01/06/2024 13:39:10

Provedor de dados: 	27	
País: 	Belgium	
Título: 	Kinetics of iron (II) oxidation in seawater of various pH	
Autores: 	Roekens, E.J.; Van Grieken, R.E.	
Data: 	1983	
Ano: 	1983	
Palavras-chave: 	Iron; Kinetics; Oxidation.	
Resumo: 	The rate of iron(II) oxidation in the North Sea water of pH 5.5-10 in the range 10-25°C has been studied. The oxygenation rate depends linearly on the iron(II) and dissolved oxygen concentrations. The second-order dependence on (OH&lt;sup&gt;-&lt;/sup&gt;), found by several investigators for synthetic solutions, was confirmed in seawater, but only for pOH&gt;6.9. For pOH&lt;5.9 the rate appeared to be independent of the pOH. In the intermediate range, pOH&lt;5.9-6.9, corresponding to the natural pH of seawater, a first-order dependence on the pOH is obeyed. The important discrepancy in the literature between the second-order rate constant for NaCHO&lt;sub&gt;3&lt;/sub&gt; solutions and for seawater can be attributed predominantly to the incorrect assumption of a second-order pOH dependence in natural seawater. The results can be useful, for example, in predicting the effect of dumping acidic iron waste from the titanium-dioxide industry into the ocean.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3293	
Fonte: 	%3Ci%3EMar.+Chem.+13%3C%2Fi%3E%3A+195-202	
Fonte: 	info:eu-repo/semantics/restrictedAccess