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ID 30802
file
creator
subject
Adsorption
Calcium phosphate
Coal ash
Eutrophication
Phosphate
Sediment
NDC
Earth sciences. Geology
abstract
The deterioration of sediments is a serious environmental problem. Controlling nutrient release fluxes from sediments is important to alleviating eutrophication and to reducing terrigenous nutrient loads. The purpose of this study was to evaluate the phosphate removal performance of granulated coal ash (GCA) from seawater, which is produced from coal thermal electric power generation. Batch experiments were carried out to investigate the removal kinetics of phosphate from seawater under both oxic and anoxic conditions. Phosphate was removed well from seawater under both oxic and anoxic conditions. The adsorption isotherm for phosphate revealed that GCA could remove phosphate effectively from seawater above a concentration of 1.7 mu mol L-1. GCA can reduce the concentration of phosphate in seawater effectively under anoxic conditions where iron type adsorbents cannot be applied. Therefore, GCA could potentially be used to adsorb phosphate in the organically-enriched sediment, which generally occurs under highly reductive conditions.
journal title
Marine Pollution Bulletin
volume
Volume 60
issue
Issue 8
start page
1188
end page
1192
date of issued
2010-08
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) 2010 Elsevier Ltd
relation url
department
Graduate School of Science