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ID 30801
file
creator
subject
Acid volatile sulfide
Blast furnace slag
Eutrophication
Marine sediment
Phosphate
Remediation
NDC
Earth sciences. Geology
abstract
There is an urgent need to control nutrient release fluxes from organically-enriched sediments into overlying waters to alleviate the effects of eutrophication. This study aims to characterize blast furnace slag (BFS) and evaluate its remediation performance on organically-enriched sediments in terms of suppressing nutrient fluxes and reducing acid volatile sulfide. BFS was mainly composed of inorganic substances such as CaO, SiO2, Al2O3 and MgO in amorphous crystal phase. Container experiments showed that the phosphate concentration in the overlying water, its releasing flux from sediment and AVS of the sediment decreased by 17–23%, 39% and 16% compared to the control without BFS, respectively. The loss on ignition was significantly decreased by 3.6–11% compared to the control. Thus, the application of BFS to organically-enriched sediment has a suppressive role on organic matter, AVS concentration and phosphate releasing flux from sediments and therefore, is a good candidate as an effective environmental remediation agent.
journal title
Marine Pollution Bulletin
volume
Volume 60
issue
Issue 4
start page
573
end page
578
date of issued
2010-04
publisher
Pergamon Elsevier Science Ltd
issn
0025-326X
ncid
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
author
rights
Copyright (c) 2009 Elsevier Ltd
relation url
department
Graduate School of Science