Skip to main content

IMIS

A new integrated search interface will become available in the next phase of marineinfo.org.
For the time being, please use IMIS to search available data

 

[ report an error in this record ]basket (0): add | show Print this page

Effects of alkaline aluminate waste dumping on seawater chemistry
Vandelannoote, R.; Van 't Dack, L.; Van Grieken, R. (1987). Effects of alkaline aluminate waste dumping on seawater chemistry. Mar. Environ. Res. 21: 275-288
In: Marine Environmental Research. Applied Science Publishers: Barking. ISSN 0141-1136; e-ISSN 1879-0291, more
Peer reviewed article  

Available in  Authors 

Keywords
    Aquatic sciences > Marine sciences > Earth sciences > Oceanography > Chemical oceanography
    Chemical elements > Nonmetals > Aluminium
    Monitoring > Environmental monitoring > Pollution monitoring
    Properties > Chemical properties > Alkalinity
    Waste disposal
    Waste disposal > Ocean dumping
    ANE, Belgium [Marine Regions]; ANE, North Sea, Southern Bight [Marine Regions]
    Marine/Coastal

Authors  Top 
  • Vandelannoote, R.
  • Van 't Dack, L.
  • Van Grieken, R., more

Abstract
    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-1 (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-1 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 Mg6Al2CO3(OH)16.4H2O (hydrotalcite-manasseite like). No trace of it was found in the local sediments.

All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy Top | Authors