Data/hora: 03/06/2024 02:14:38

Provedor de dados: 	27	
País: 	Belgium	
Título: 	Effects of alkaline aluminate waste dumping on seawater chemistry	
Autores: 	Vandelannoote, R.; Van 't Dack, L.; Van Grieken, R.	
Data: 	1987	
Ano: 	1987	
Palavras-chave: 	Alkalinity Aluminium Chemical oceanography Ocean dumping Pollution monitoring Waste disposal ANE; Belgium ANE; North Sea; Southern Bight.	
Resumo: 	The alkaline aluminate waste, of which 1000-2000 tonnes are dumped a few times a year off the Belgian coast in the Southern Bight of the North Sea, contains 5.4% NaCl, 1.8% dissolved Al and 7.4% NaOH, in addition to traces of heavy metals and some aniline- and phenol-derivatives. The pH rises locally to 8.5 and the total Al-concentration reaches 120 mg liter&lt;sup&gt;-1&lt;/sup&gt; (corresponding to an initial waste dilution factor of only 150) in the 10-m wide track just beyond the discharging barge, but these decay quickly to pH 8.1 and 1 mg liter&lt;sup&gt;-1&lt;/sup&gt; in the 30-m wide track, 500m behind the barge. The relation between the waste concentration and seawater pH was studied. The white precipitate that forms immediately in the sea was identified as Mg&lt;sub&gt;6&lt;/sub&gt;Al&lt;sub&gt;2&lt;/sub&gt;CO&lt;sub&gt;3&lt;/sub&gt;(OH)&lt;sub&gt;16&lt;/sub&gt;.4H&lt;sub&gt;2&lt;/sub&gt;O (hydrotalcite-manasseite like). No trace of it was found in the local sediments.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3211	
Fonte: 	%3Ci%3EMar.+Environ.+Res.+21%3C%2Fi%3E%3A+275-288	
Fonte: 	info:eu-repo/semantics/restrictedAccess